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| <section id='main' class="content"><pre class="line-numbers"><span id="1"> 1</span> |
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| <span id="1000">1000</span> |
| <span id="1001">1001</span> |
| <span id="1002">1002</span> |
| <span id="1003">1003</span> |
| <span id="1004">1004</span> |
| <span id="1005">1005</span> |
| <span id="1006">1006</span> |
| <span id="1007">1007</span> |
| <span id="1008">1008</span> |
| <span id="1009">1009</span> |
| <span id="1010">1010</span> |
| <span id="1011">1011</span> |
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| <span id="1016">1016</span> |
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| <span id="1019">1019</span> |
| <span id="1020">1020</span> |
| <span id="1021">1021</span> |
| <span id="1022">1022</span> |
| <span id="1023">1023</span> |
| <span id="1024">1024</span> |
| <span id="1025">1025</span> |
| <span id="1026">1026</span> |
| <span id="1027">1027</span> |
| <span id="1028">1028</span> |
| <span id="1029">1029</span> |
| <span id="1030">1030</span> |
| <span id="1031">1031</span> |
| <span id="1032">1032</span> |
| <span id="1033">1033</span> |
| <span id="1034">1034</span> |
| <span id="1035">1035</span> |
| <span id="1036">1036</span> |
| <span id="1037">1037</span> |
| <span id="1038">1038</span> |
| <span id="1039">1039</span> |
| <span id="1040">1040</span> |
| <span id="1041">1041</span> |
| <span id="1042">1042</span> |
| <span id="1043">1043</span> |
| <span id="1044">1044</span> |
| <span id="1045">1045</span> |
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| <span id="1048">1048</span> |
| <span id="1049">1049</span> |
| <span id="1050">1050</span> |
| <span id="1051">1051</span> |
| <span id="1052">1052</span> |
| <span id="1053">1053</span> |
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| <span id="1055">1055</span> |
| <span id="1056">1056</span> |
| <span id="1057">1057</span> |
| <span id="1058">1058</span> |
| <span id="1059">1059</span> |
| <span id="1060">1060</span> |
| <span id="1061">1061</span> |
| <span id="1062">1062</span> |
| <span id="1063">1063</span> |
| <span id="1064">1064</span> |
| <span id="1065">1065</span> |
| <span id="1066">1066</span> |
| <span id="1067">1067</span> |
| <span id="1068">1068</span> |
| <span id="1069">1069</span> |
| <span id="1070">1070</span> |
| <span id="1071">1071</span> |
| <span id="1072">1072</span> |
| <span id="1073">1073</span> |
| <span id="1074">1074</span> |
| <span id="1075">1075</span> |
| <span id="1076">1076</span> |
| <span id="1077">1077</span> |
| <span id="1078">1078</span> |
| <span id="1079">1079</span> |
| <span id="1080">1080</span> |
| <span id="1081">1081</span> |
| <span id="1082">1082</span> |
| <span id="1083">1083</span> |
| <span id="1084">1084</span> |
| <span id="1085">1085</span> |
| <span id="1086">1086</span> |
| <span id="1087">1087</span> |
| <span id="1088">1088</span> |
| <span id="1089">1089</span> |
| <span id="1090">1090</span> |
| <span id="1091">1091</span> |
| <span id="1092">1092</span> |
| <span id="1093">1093</span> |
| <span id="1094">1094</span> |
| <span id="1095">1095</span> |
| <span id="1096">1096</span> |
| <span id="1097">1097</span> |
| <span id="1098">1098</span> |
| <span id="1099">1099</span> |
| <span id="1100">1100</span> |
| <span id="1101">1101</span> |
| <span id="1102">1102</span> |
| <span id="1103">1103</span> |
| <span id="1104">1104</span> |
| <span id="1105">1105</span> |
| <span id="1106">1106</span> |
| <span id="1107">1107</span> |
| <span id="1108">1108</span> |
| <span id="1109">1109</span> |
| <span id="1110">1110</span> |
| <span id="1111">1111</span> |
| <span id="1112">1112</span> |
| <span id="1113">1113</span> |
| <span id="1114">1114</span> |
| <span id="1115">1115</span> |
| <span id="1116">1116</span> |
| <span id="1117">1117</span> |
| <span id="1118">1118</span> |
| <span id="1119">1119</span> |
| <span id="1120">1120</span> |
| <span id="1121">1121</span> |
| <span id="1122">1122</span> |
| <span id="1123">1123</span> |
| <span id="1124">1124</span> |
| <span id="1125">1125</span> |
| <span id="1126">1126</span> |
| <span id="1127">1127</span> |
| <span id="1128">1128</span> |
| <span id="1129">1129</span> |
| <span id="1130">1130</span> |
| <span id="1131">1131</span> |
| <span id="1132">1132</span> |
| <span id="1133">1133</span> |
| <span id="1134">1134</span> |
| <span id="1135">1135</span> |
| <span id="1136">1136</span> |
| <span id="1137">1137</span> |
| <span id="1138">1138</span> |
| <span id="1139">1139</span> |
| <span id="1140">1140</span> |
| <span id="1141">1141</span> |
| <span id="1142">1142</span> |
| <span id="1143">1143</span> |
| <span id="1144">1144</span> |
| <span id="1145">1145</span> |
| <span id="1146">1146</span> |
| <span id="1147">1147</span> |
| <span id="1148">1148</span> |
| <span id="1149">1149</span> |
| <span id="1150">1150</span> |
| <span id="1151">1151</span> |
| <span id="1152">1152</span> |
| <span id="1153">1153</span> |
| <span id="1154">1154</span> |
| <span id="1155">1155</span> |
| <span id="1156">1156</span> |
| <span id="1157">1157</span> |
| <span id="1158">1158</span> |
| <span id="1159">1159</span> |
| <span id="1160">1160</span> |
| <span id="1161">1161</span> |
| <span id="1162">1162</span> |
| <span id="1163">1163</span> |
| <span id="1164">1164</span> |
| <span id="1165">1165</span> |
| <span id="1166">1166</span> |
| <span id="1167">1167</span> |
| <span id="1168">1168</span> |
| <span id="1169">1169</span> |
| <span id="1170">1170</span> |
| <span id="1171">1171</span> |
| <span id="1172">1172</span> |
| <span id="1173">1173</span> |
| <span id="1174">1174</span> |
| <span id="1175">1175</span> |
| </pre><pre class="rust "> |
| <span class="doccomment">//! Line buffer with current cursor position</span> |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">iter</span>; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">ops</span>::{<span class="ident">Deref</span>, <span class="ident">Range</span>}; |
| <span class="kw">use</span> <span class="ident">unicode_segmentation</span>::<span class="ident">UnicodeSegmentation</span>; |
| <span class="kw">use</span> <span class="ident">keymap</span>::{<span class="ident">At</span>, <span class="ident">CharSearch</span>, <span class="ident">Movement</span>, <span class="ident">RepeatCount</span>, <span class="ident">Word</span>}; |
| |
| <span class="doccomment">/// Maximum buffer size for the line read</span> |
| <span class="kw">pub</span> <span class="kw">static</span> <span class="ident">MAX_LINE</span>: <span class="ident">usize</span> <span class="op">=</span> <span class="number">4096</span>; |
| |
| <span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">WordAction</span> { |
| <span class="ident">CAPITALIZE</span>, |
| <span class="ident">LOWERCASE</span>, |
| <span class="ident">UPPERCASE</span>, |
| } |
| |
| <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>)]</span> |
| <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">LineBuffer</span> { |
| <span class="ident">buf</span>: <span class="ident">String</span>, <span class="comment">// Edited line buffer</span> |
| <span class="ident">pos</span>: <span class="ident">usize</span>, <span class="comment">// Current cursor position (byte position)</span> |
| } |
| |
| <span class="kw">impl</span> <span class="ident">LineBuffer</span> { |
| <span class="doccomment">/// Create a new line buffer with the given maximum `capacity`.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">with_capacity</span>(<span class="ident">capacity</span>: <span class="ident">usize</span>) <span class="op">-></span> <span class="ident">LineBuffer</span> { |
| <span class="ident">LineBuffer</span> { |
| <span class="ident">buf</span>: <span class="ident">String</span>::<span class="ident">with_capacity</span>(<span class="ident">capacity</span>), |
| <span class="ident">pos</span>: <span class="number">0</span>, |
| } |
| } |
| |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">init</span>(<span class="ident">line</span>: <span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">pos</span>: <span class="ident">usize</span>) <span class="op">-></span> <span class="ident">LineBuffer</span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">lb</span> <span class="op">=</span> <span class="self">Self</span>::<span class="ident">with_capacity</span>(<span class="ident">MAX_LINE</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">lb</span>.<span class="ident">insert_str</span>(<span class="number">0</span>, <span class="ident">line</span>)); |
| <span class="ident">lb</span>.<span class="ident">set_pos</span>(<span class="ident">pos</span>); |
| <span class="ident">lb</span> |
| } |
| |
| <span class="doccomment">/// Extracts a string slice containing the entire buffer.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">as_str</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">str</span> { |
| <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">buf</span> |
| } |
| |
| <span class="doccomment">/// Converts a buffer into a `String` without copying or allocating.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">into_string</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">String</span> { |
| <span class="self">self</span>.<span class="ident">buf</span> |
| } |
| |
| <span class="doccomment">/// Current cursor position (byte position)</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">pos</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">usize</span> { |
| <span class="self">self</span>.<span class="ident">pos</span> |
| } |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">set_pos</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">pos</span>: <span class="ident">usize</span>) { |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">pos</span> <span class="op"><=</span> <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">len</span>()); |
| <span class="self">self</span>.<span class="ident">pos</span> <span class="op">=</span> <span class="ident">pos</span>; |
| } |
| |
| <span class="doccomment">/// Returns the length of this buffer, in bytes.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">len</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">usize</span> { |
| <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">len</span>() |
| } |
| <span class="doccomment">/// Returns `true` if this buffer has a length of zero.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_empty</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">is_empty</span>() |
| } |
| |
| <span class="doccomment">/// Set line content (`buf`) and cursor position (`pos`).</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">update</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">buf</span>: <span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">pos</span>: <span class="ident">usize</span>) { |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">pos</span> <span class="op"><=</span> <span class="ident">buf</span>.<span class="ident">len</span>()); |
| <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">clear</span>(); |
| <span class="kw">let</span> <span class="ident">max</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">capacity</span>(); |
| <span class="kw">if</span> <span class="ident">buf</span>.<span class="ident">len</span>() <span class="op">></span> <span class="ident">max</span> { |
| <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">push_str</span>(<span class="kw-2">&</span><span class="ident">buf</span>[..<span class="ident">max</span>]); |
| <span class="kw">if</span> <span class="ident">pos</span> <span class="op">></span> <span class="ident">max</span> { |
| <span class="self">self</span>.<span class="ident">pos</span> <span class="op">=</span> <span class="ident">max</span>; |
| } <span class="kw">else</span> { |
| <span class="self">self</span>.<span class="ident">pos</span> <span class="op">=</span> <span class="ident">pos</span>; |
| } |
| } <span class="kw">else</span> { |
| <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">push_str</span>(<span class="ident">buf</span>); |
| <span class="self">self</span>.<span class="ident">pos</span> <span class="op">=</span> <span class="ident">pos</span>; |
| } |
| } |
| |
| <span class="doccomment">/// Backup `src`</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">backup</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">src</span>: <span class="kw-2">&</span><span class="ident">LineBuffer</span>) { |
| <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">clear</span>(); |
| <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">push_str</span>(<span class="kw-2">&</span><span class="ident">src</span>.<span class="ident">buf</span>); |
| <span class="self">self</span>.<span class="ident">pos</span> <span class="op">=</span> <span class="ident">src</span>.<span class="ident">pos</span>; |
| } |
| |
| <span class="doccomment">/// Returns the character at current cursor position.</span> |
| <span class="kw">fn</span> <span class="ident">grapheme_at_cursor</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">str</span><span class="op">></span> { |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">pos</span> <span class="op">==</span> <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">len</span>() { |
| <span class="prelude-val">None</span> |
| } <span class="kw">else</span> { |
| <span class="self">self</span>.<span class="ident">buf</span>[<span class="self">self</span>.<span class="ident">pos</span>..].<span class="ident">graphemes</span>(<span class="bool-val">true</span>).<span class="ident">next</span>() |
| } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">next_pos</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">n</span>: <span class="ident">RepeatCount</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span> { |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">pos</span> <span class="op">==</span> <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">len</span>() { |
| <span class="kw">return</span> <span class="prelude-val">None</span>; |
| } |
| <span class="self">self</span>.<span class="ident">buf</span>[<span class="self">self</span>.<span class="ident">pos</span>..] |
| .<span class="ident">grapheme_indices</span>(<span class="bool-val">true</span>) |
| .<span class="ident">take</span>(<span class="ident">n</span>) |
| .<span class="ident">last</span>() |
| .<span class="ident">map</span>(<span class="op">|</span>(<span class="ident">i</span>, <span class="ident">s</span>)<span class="op">|</span> <span class="ident">i</span> <span class="op">+</span> <span class="self">self</span>.<span class="ident">pos</span> <span class="op">+</span> <span class="ident">s</span>.<span class="ident">len</span>()) |
| } |
| <span class="doccomment">/// Returns the position of the character just before the current cursor position.</span> |
| <span class="kw">fn</span> <span class="ident">prev_pos</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">n</span>: <span class="ident">RepeatCount</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span> { |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">pos</span> <span class="op">==</span> <span class="number">0</span> { |
| <span class="kw">return</span> <span class="prelude-val">None</span>; |
| } |
| <span class="self">self</span>.<span class="ident">buf</span>[..<span class="self">self</span>.<span class="ident">pos</span>] |
| .<span class="ident">grapheme_indices</span>(<span class="bool-val">true</span>) |
| .<span class="ident">rev</span>() |
| .<span class="ident">take</span>(<span class="ident">n</span>) |
| .<span class="ident">last</span>() |
| .<span class="ident">map</span>(<span class="op">|</span>(<span class="ident">i</span>, _)<span class="op">|</span> <span class="ident">i</span>) |
| } |
| |
| <span class="doccomment">/// Insert the character `ch` at current cursor position</span> |
| <span class="doccomment">/// and advance cursor position accordingly.</span> |
| <span class="doccomment">/// Return `None` when maximum buffer size has been reached,</span> |
| <span class="doccomment">/// `true` when the character has been appended to the end of the line.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">insert</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">ch</span>: <span class="ident">char</span>, <span class="ident">n</span>: <span class="ident">RepeatCount</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">bool</span><span class="op">></span> { |
| <span class="kw">let</span> <span class="ident">shift</span> <span class="op">=</span> <span class="ident">ch</span>.<span class="ident">len_utf8</span>() <span class="op">*</span> <span class="ident">n</span>; |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">len</span>() <span class="op">+</span> <span class="ident">shift</span> <span class="op">></span> <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">capacity</span>() { |
| <span class="kw">return</span> <span class="prelude-val">None</span>; |
| } |
| <span class="kw">let</span> <span class="ident">push</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">pos</span> <span class="op">==</span> <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">len</span>(); |
| <span class="kw">if</span> <span class="ident">push</span> { |
| <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">reserve</span>(<span class="ident">shift</span>); |
| <span class="kw">for</span> _ <span class="kw">in</span> <span class="number">0</span>..<span class="ident">n</span> { |
| <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">push</span>(<span class="ident">ch</span>); |
| } |
| } <span class="kw">else</span> <span class="kw">if</span> <span class="ident">n</span> <span class="op">==</span> <span class="number">1</span> { |
| <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">insert</span>(<span class="self">self</span>.<span class="ident">pos</span>, <span class="ident">ch</span>); |
| } <span class="kw">else</span> { |
| <span class="kw">let</span> <span class="ident">text</span> <span class="op">=</span> <span class="ident">iter</span>::<span class="ident">repeat</span>(<span class="ident">ch</span>).<span class="ident">take</span>(<span class="ident">n</span>).<span class="ident">collect</span>::<span class="op"><</span><span class="ident">String</span><span class="op">></span>(); |
| <span class="kw">let</span> <span class="ident">pos</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">pos</span>; |
| <span class="self">self</span>.<span class="ident">insert_str</span>(<span class="ident">pos</span>, <span class="kw-2">&</span><span class="ident">text</span>); |
| } |
| <span class="self">self</span>.<span class="ident">pos</span> <span class="op">+=</span> <span class="ident">shift</span>; |
| <span class="prelude-val">Some</span>(<span class="ident">push</span>) |
| } |
| |
| <span class="doccomment">/// Yank/paste `text` at current position.</span> |
| <span class="doccomment">/// Return `None` when maximum buffer size has been reached,</span> |
| <span class="doccomment">/// `true` when the character has been appended to the end of the line.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">yank</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">text</span>: <span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">n</span>: <span class="ident">RepeatCount</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">bool</span><span class="op">></span> { |
| <span class="kw">let</span> <span class="ident">shift</span> <span class="op">=</span> <span class="ident">text</span>.<span class="ident">len</span>() <span class="op">*</span> <span class="ident">n</span>; |
| <span class="kw">if</span> <span class="ident">text</span>.<span class="ident">is_empty</span>() <span class="op">||</span> (<span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">len</span>() <span class="op">+</span> <span class="ident">shift</span>) <span class="op">></span> <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">capacity</span>() { |
| <span class="kw">return</span> <span class="prelude-val">None</span>; |
| } |
| <span class="kw">let</span> <span class="ident">push</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">pos</span> <span class="op">==</span> <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">len</span>(); |
| <span class="kw">if</span> <span class="ident">push</span> { |
| <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">reserve</span>(<span class="ident">shift</span>); |
| <span class="kw">for</span> _ <span class="kw">in</span> <span class="number">0</span>..<span class="ident">n</span> { |
| <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">push_str</span>(<span class="ident">text</span>); |
| } |
| } <span class="kw">else</span> { |
| <span class="kw">let</span> <span class="ident">text</span> <span class="op">=</span> <span class="ident">iter</span>::<span class="ident">repeat</span>(<span class="ident">text</span>).<span class="ident">take</span>(<span class="ident">n</span>).<span class="ident">collect</span>::<span class="op"><</span><span class="ident">String</span><span class="op">></span>(); |
| <span class="kw">let</span> <span class="ident">pos</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">pos</span>; |
| <span class="self">self</span>.<span class="ident">insert_str</span>(<span class="ident">pos</span>, <span class="kw-2">&</span><span class="ident">text</span>); |
| } |
| <span class="self">self</span>.<span class="ident">pos</span> <span class="op">+=</span> <span class="ident">shift</span>; |
| <span class="prelude-val">Some</span>(<span class="ident">push</span>) |
| } |
| |
| <span class="doccomment">/// Delete previously yanked text and yank/paste `text` at current position.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">yank_pop</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">yank_size</span>: <span class="ident">usize</span>, <span class="ident">text</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">bool</span><span class="op">></span> { |
| <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">drain</span>((<span class="self">self</span>.<span class="ident">pos</span> <span class="op">-</span> <span class="ident">yank_size</span>)..<span class="self">self</span>.<span class="ident">pos</span>); |
| <span class="self">self</span>.<span class="ident">pos</span> <span class="op">-=</span> <span class="ident">yank_size</span>; |
| <span class="self">self</span>.<span class="ident">yank</span>(<span class="ident">text</span>, <span class="number">1</span>) |
| } |
| |
| <span class="doccomment">/// Move cursor on the left.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">move_backward</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">n</span>: <span class="ident">RepeatCount</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| <span class="kw">match</span> <span class="self">self</span>.<span class="ident">prev_pos</span>(<span class="ident">n</span>) { |
| <span class="prelude-val">Some</span>(<span class="ident">pos</span>) <span class="op">=></span> { |
| <span class="self">self</span>.<span class="ident">pos</span> <span class="op">=</span> <span class="ident">pos</span>; |
| <span class="bool-val">true</span> |
| } |
| <span class="prelude-val">None</span> <span class="op">=></span> <span class="bool-val">false</span>, |
| } |
| } |
| |
| <span class="doccomment">/// Move cursor on the right.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">move_forward</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">n</span>: <span class="ident">RepeatCount</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| <span class="kw">match</span> <span class="self">self</span>.<span class="ident">next_pos</span>(<span class="ident">n</span>) { |
| <span class="prelude-val">Some</span>(<span class="ident">pos</span>) <span class="op">=></span> { |
| <span class="self">self</span>.<span class="ident">pos</span> <span class="op">=</span> <span class="ident">pos</span>; |
| <span class="bool-val">true</span> |
| } |
| <span class="prelude-val">None</span> <span class="op">=></span> <span class="bool-val">false</span>, |
| } |
| } |
| |
| <span class="doccomment">/// Move cursor to the start of the line.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">move_home</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">pos</span> <span class="op">></span> <span class="number">0</span> { |
| <span class="self">self</span>.<span class="ident">pos</span> <span class="op">=</span> <span class="number">0</span>; |
| <span class="bool-val">true</span> |
| } <span class="kw">else</span> { |
| <span class="bool-val">false</span> |
| } |
| } |
| |
| <span class="doccomment">/// Move cursor to the end of the line.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">move_end</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">pos</span> <span class="op">==</span> <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">len</span>() { |
| <span class="bool-val">false</span> |
| } <span class="kw">else</span> { |
| <span class="self">self</span>.<span class="ident">pos</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">len</span>(); |
| <span class="bool-val">true</span> |
| } |
| } |
| |
| <span class="doccomment">/// Delete the character at the right of the cursor without altering the cursor</span> |
| <span class="doccomment">/// position. Basically this is what happens with the "Delete" keyboard key.</span> |
| <span class="doccomment">/// Return the number of characters deleted.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">delete</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">n</span>: <span class="ident">RepeatCount</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> { |
| <span class="kw">match</span> <span class="self">self</span>.<span class="ident">next_pos</span>(<span class="ident">n</span>) { |
| <span class="prelude-val">Some</span>(<span class="ident">pos</span>) <span class="op">=></span> { |
| <span class="kw">let</span> <span class="ident">chars</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">drain</span>(<span class="self">self</span>.<span class="ident">pos</span>..<span class="ident">pos</span>).<span class="ident">collect</span>::<span class="op"><</span><span class="ident">String</span><span class="op">></span>(); |
| <span class="prelude-val">Some</span>(<span class="ident">chars</span>) |
| } |
| <span class="prelude-val">None</span> <span class="op">=></span> <span class="prelude-val">None</span>, |
| } |
| } |
| |
| <span class="doccomment">/// Delete the character at the left of the cursor.</span> |
| <span class="doccomment">/// Basically that is what happens with the "Backspace" keyboard key.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">backspace</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">n</span>: <span class="ident">RepeatCount</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> { |
| <span class="kw">match</span> <span class="self">self</span>.<span class="ident">prev_pos</span>(<span class="ident">n</span>) { |
| <span class="prelude-val">Some</span>(<span class="ident">pos</span>) <span class="op">=></span> { |
| <span class="kw">let</span> <span class="ident">chars</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">drain</span>(<span class="ident">pos</span>..<span class="self">self</span>.<span class="ident">pos</span>).<span class="ident">collect</span>::<span class="op"><</span><span class="ident">String</span><span class="op">></span>(); |
| <span class="self">self</span>.<span class="ident">pos</span> <span class="op">=</span> <span class="ident">pos</span>; |
| <span class="prelude-val">Some</span>(<span class="ident">chars</span>) |
| } |
| <span class="prelude-val">None</span> <span class="op">=></span> <span class="prelude-val">None</span>, |
| } |
| } |
| |
| <span class="doccomment">/// Kill the text from point to the end of the line.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">kill_line</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> { |
| <span class="kw">if</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">is_empty</span>() <span class="op">&&</span> <span class="self">self</span>.<span class="ident">pos</span> <span class="op"><</span> <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">len</span>() { |
| <span class="kw">let</span> <span class="ident">text</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">drain</span>(<span class="self">self</span>.<span class="ident">pos</span>..).<span class="ident">collect</span>(); |
| <span class="prelude-val">Some</span>(<span class="ident">text</span>) |
| } <span class="kw">else</span> { |
| <span class="prelude-val">None</span> |
| } |
| } |
| |
| <span class="doccomment">/// Kill backward from point to the beginning of the line.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">discard_line</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> { |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">pos</span> <span class="op">></span> <span class="number">0</span> <span class="op">&&</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">is_empty</span>() { |
| <span class="kw">let</span> <span class="ident">text</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">drain</span>(..<span class="self">self</span>.<span class="ident">pos</span>).<span class="ident">collect</span>(); |
| <span class="self">self</span>.<span class="ident">pos</span> <span class="op">=</span> <span class="number">0</span>; |
| <span class="prelude-val">Some</span>(<span class="ident">text</span>) |
| } <span class="kw">else</span> { |
| <span class="prelude-val">None</span> |
| } |
| } |
| |
| <span class="doccomment">/// Exchange the char before cursor with the character at cursor.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">transpose_chars</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">pos</span> <span class="op">==</span> <span class="number">0</span> <span class="op">||</span> <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">graphemes</span>(<span class="bool-val">true</span>).<span class="ident">count</span>() <span class="op"><</span> <span class="number">2</span> { |
| <span class="kw">return</span> <span class="bool-val">false</span>; |
| } |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">pos</span> <span class="op">==</span> <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">len</span>() { |
| <span class="self">self</span>.<span class="ident">move_backward</span>(<span class="number">1</span>); |
| } |
| <span class="kw">let</span> <span class="ident">chars</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">delete</span>(<span class="number">1</span>).<span class="ident">unwrap</span>(); |
| <span class="self">self</span>.<span class="ident">move_backward</span>(<span class="number">1</span>); |
| <span class="self">self</span>.<span class="ident">yank</span>(<span class="kw-2">&</span><span class="ident">chars</span>, <span class="number">1</span>); |
| <span class="self">self</span>.<span class="ident">move_forward</span>(<span class="number">1</span>); |
| <span class="bool-val">true</span> |
| } |
| |
| <span class="doccomment">/// Go left until start of word</span> |
| <span class="kw">fn</span> <span class="ident">prev_word_pos</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">pos</span>: <span class="ident">usize</span>, <span class="ident">word_def</span>: <span class="ident">Word</span>, <span class="ident">n</span>: <span class="ident">RepeatCount</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span> { |
| <span class="kw">if</span> <span class="ident">pos</span> <span class="op">==</span> <span class="number">0</span> { |
| <span class="kw">return</span> <span class="prelude-val">None</span>; |
| } |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">sow</span> <span class="op">=</span> <span class="number">0</span>; |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">gis</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">buf</span>[..<span class="ident">pos</span>].<span class="ident">grapheme_indices</span>(<span class="bool-val">true</span>).<span class="ident">rev</span>(); |
| <span class="lifetime">'outer</span>: <span class="kw">for</span> _ <span class="kw">in</span> <span class="number">0</span>..<span class="ident">n</span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">gj</span> <span class="op">=</span> <span class="ident">gis</span>.<span class="ident">next</span>(); |
| <span class="lifetime">'inner</span>: <span class="kw">loop</span> { |
| <span class="kw">match</span> <span class="ident">gj</span> { |
| <span class="prelude-val">Some</span>((<span class="ident">j</span>, <span class="ident">y</span>)) <span class="op">=></span> { |
| <span class="kw">let</span> <span class="ident">gi</span> <span class="op">=</span> <span class="ident">gis</span>.<span class="ident">next</span>(); |
| <span class="kw">match</span> <span class="ident">gi</span> { |
| <span class="prelude-val">Some</span>((_, <span class="ident">x</span>)) <span class="op">=></span> { |
| <span class="kw">if</span> <span class="ident">is_start_of_word</span>(<span class="ident">word_def</span>, <span class="ident">x</span>, <span class="ident">y</span>) { |
| <span class="ident">sow</span> <span class="op">=</span> <span class="ident">j</span>; |
| <span class="kw">break</span> <span class="lifetime">'inner</span>; |
| } |
| <span class="ident">gj</span> <span class="op">=</span> <span class="ident">gi</span>; |
| } |
| <span class="prelude-val">None</span> <span class="op">=></span> { |
| <span class="kw">break</span> <span class="lifetime">'outer</span>; |
| } |
| } |
| } |
| <span class="prelude-val">None</span> <span class="op">=></span> { |
| <span class="kw">break</span> <span class="lifetime">'outer</span>; |
| } |
| } |
| } |
| } |
| <span class="prelude-val">Some</span>(<span class="ident">sow</span>) |
| } |
| |
| <span class="doccomment">/// Moves the cursor to the beginning of previous word.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">move_to_prev_word</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">word_def</span>: <span class="ident">Word</span>, <span class="ident">n</span>: <span class="ident">RepeatCount</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">pos</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">prev_word_pos</span>(<span class="self">self</span>.<span class="ident">pos</span>, <span class="ident">word_def</span>, <span class="ident">n</span>) { |
| <span class="self">self</span>.<span class="ident">pos</span> <span class="op">=</span> <span class="ident">pos</span>; |
| <span class="bool-val">true</span> |
| } <span class="kw">else</span> { |
| <span class="bool-val">false</span> |
| } |
| } |
| |
| <span class="doccomment">/// Delete the previous word, maintaining the cursor at the start of the</span> |
| <span class="doccomment">/// current word.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">delete_prev_word</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">word_def</span>: <span class="ident">Word</span>, <span class="ident">n</span>: <span class="ident">RepeatCount</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> { |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">pos</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">prev_word_pos</span>(<span class="self">self</span>.<span class="ident">pos</span>, <span class="ident">word_def</span>, <span class="ident">n</span>) { |
| <span class="kw">let</span> <span class="ident">word</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">drain</span>(<span class="ident">pos</span>..<span class="self">self</span>.<span class="ident">pos</span>).<span class="ident">collect</span>(); |
| <span class="self">self</span>.<span class="ident">pos</span> <span class="op">=</span> <span class="ident">pos</span>; |
| <span class="prelude-val">Some</span>(<span class="ident">word</span>) |
| } <span class="kw">else</span> { |
| <span class="prelude-val">None</span> |
| } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">next_word_pos</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">pos</span>: <span class="ident">usize</span>, <span class="ident">at</span>: <span class="ident">At</span>, <span class="ident">word_def</span>: <span class="ident">Word</span>, <span class="ident">n</span>: <span class="ident">RepeatCount</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span> { |
| <span class="kw">if</span> <span class="ident">pos</span> <span class="op">==</span> <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">len</span>() { |
| <span class="kw">return</span> <span class="prelude-val">None</span>; |
| } |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">wp</span> <span class="op">=</span> <span class="number">0</span>; |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">gis</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">buf</span>[<span class="ident">pos</span>..].<span class="ident">grapheme_indices</span>(<span class="bool-val">true</span>); |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">gi</span> <span class="op">=</span> <span class="kw">if</span> <span class="ident">at</span> <span class="op">!=</span> <span class="ident">At</span>::<span class="ident">Start</span> { |
| <span class="comment">// TODO Validate</span> |
| <span class="ident">gis</span>.<span class="ident">next</span>() |
| } <span class="kw">else</span> { |
| <span class="prelude-val">None</span> |
| }; |
| <span class="lifetime">'outer</span>: <span class="kw">for</span> _ <span class="kw">in</span> <span class="number">0</span>..<span class="ident">n</span> { |
| <span class="ident">gi</span> <span class="op">=</span> <span class="ident">gis</span>.<span class="ident">next</span>(); |
| <span class="lifetime">'inner</span>: <span class="kw">loop</span> { |
| <span class="kw">match</span> <span class="ident">gi</span> { |
| <span class="prelude-val">Some</span>((<span class="ident">i</span>, <span class="ident">x</span>)) <span class="op">=></span> { |
| <span class="kw">let</span> <span class="ident">gj</span> <span class="op">=</span> <span class="ident">gis</span>.<span class="ident">next</span>(); |
| <span class="kw">match</span> <span class="ident">gj</span> { |
| <span class="prelude-val">Some</span>((<span class="ident">j</span>, <span class="ident">y</span>)) <span class="op">=></span> { |
| <span class="kw">if</span> <span class="ident">at</span> <span class="op">==</span> <span class="ident">At</span>::<span class="ident">Start</span> <span class="op">&&</span> <span class="ident">is_start_of_word</span>(<span class="ident">word_def</span>, <span class="ident">x</span>, <span class="ident">y</span>) { |
| <span class="ident">wp</span> <span class="op">=</span> <span class="ident">j</span>; |
| <span class="kw">break</span> <span class="lifetime">'inner</span>; |
| } <span class="kw">else</span> <span class="kw">if</span> <span class="ident">at</span> <span class="op">!=</span> <span class="ident">At</span>::<span class="ident">Start</span> <span class="op">&&</span> <span class="ident">is_end_of_word</span>(<span class="ident">word_def</span>, <span class="ident">x</span>, <span class="ident">y</span>) { |
| <span class="kw">if</span> <span class="ident">word_def</span> <span class="op">==</span> <span class="ident">Word</span>::<span class="ident">Emacs</span> <span class="op">||</span> <span class="ident">at</span> <span class="op">==</span> <span class="ident">At</span>::<span class="ident">AfterEnd</span> { |
| <span class="ident">wp</span> <span class="op">=</span> <span class="ident">j</span>; |
| } <span class="kw">else</span> { |
| <span class="ident">wp</span> <span class="op">=</span> <span class="ident">i</span>; |
| } |
| <span class="kw">break</span> <span class="lifetime">'inner</span>; |
| } |
| <span class="ident">gi</span> <span class="op">=</span> <span class="ident">gj</span>; |
| } |
| <span class="prelude-val">None</span> <span class="op">=></span> { |
| <span class="kw">break</span> <span class="lifetime">'outer</span>; |
| } |
| } |
| } |
| <span class="prelude-val">None</span> <span class="op">=></span> { |
| <span class="kw">break</span> <span class="lifetime">'outer</span>; |
| } |
| } |
| } |
| } |
| <span class="kw">if</span> <span class="ident">wp</span> <span class="op">==</span> <span class="number">0</span> { |
| <span class="kw">if</span> <span class="ident">word_def</span> <span class="op">==</span> <span class="ident">Word</span>::<span class="ident">Emacs</span> <span class="op">||</span> <span class="ident">at</span> <span class="op">==</span> <span class="ident">At</span>::<span class="ident">AfterEnd</span> { |
| <span class="prelude-val">Some</span>(<span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">len</span>()) |
| } <span class="kw">else</span> { |
| <span class="kw">match</span> <span class="ident">gi</span> { |
| <span class="prelude-val">Some</span>((<span class="ident">i</span>, _)) <span class="kw">if</span> <span class="ident">i</span> <span class="op">!=</span> <span class="number">0</span> <span class="op">=></span> <span class="prelude-val">Some</span>(<span class="ident">i</span> <span class="op">+</span> <span class="ident">pos</span>), |
| _ <span class="op">=></span> <span class="prelude-val">None</span>, |
| } |
| } |
| } <span class="kw">else</span> { |
| <span class="prelude-val">Some</span>(<span class="ident">wp</span> <span class="op">+</span> <span class="ident">pos</span>) |
| } |
| } |
| |
| <span class="doccomment">/// Moves the cursor to the end of next word.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">move_to_next_word</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">at</span>: <span class="ident">At</span>, <span class="ident">word_def</span>: <span class="ident">Word</span>, <span class="ident">n</span>: <span class="ident">RepeatCount</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">pos</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">next_word_pos</span>(<span class="self">self</span>.<span class="ident">pos</span>, <span class="ident">at</span>, <span class="ident">word_def</span>, <span class="ident">n</span>) { |
| <span class="self">self</span>.<span class="ident">pos</span> <span class="op">=</span> <span class="ident">pos</span>; |
| <span class="bool-val">true</span> |
| } <span class="kw">else</span> { |
| <span class="bool-val">false</span> |
| } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">search_char_pos</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">cs</span>: <span class="kw-2">&</span><span class="ident">CharSearch</span>, <span class="ident">n</span>: <span class="ident">RepeatCount</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">shift</span> <span class="op">=</span> <span class="number">0</span>; |
| <span class="kw">let</span> <span class="ident">search_result</span> <span class="op">=</span> <span class="kw">match</span> <span class="kw-2">*</span><span class="ident">cs</span> { |
| <span class="ident">CharSearch</span>::<span class="ident">Backward</span>(<span class="ident">c</span>) <span class="op">|</span> |
| <span class="ident">CharSearch</span>::<span class="ident">BackwardAfter</span>(<span class="ident">c</span>) <span class="op">=></span> { |
| <span class="self">self</span>.<span class="ident">buf</span>[..<span class="self">self</span>.<span class="ident">pos</span>] |
| .<span class="ident">char_indices</span>() |
| .<span class="ident">rev</span>() |
| .<span class="ident">filter</span>(<span class="op">|</span><span class="kw-2">&</span>(_, <span class="ident">ch</span>)<span class="op">|</span> <span class="ident">ch</span> <span class="op">==</span> <span class="ident">c</span>) |
| .<span class="ident">take</span>(<span class="ident">n</span>) |
| .<span class="ident">last</span>() |
| .<span class="ident">map</span>(<span class="op">|</span>(<span class="ident">i</span>, _)<span class="op">|</span> <span class="ident">i</span>) |
| } |
| <span class="ident">CharSearch</span>::<span class="ident">Forward</span>(<span class="ident">c</span>) <span class="op">|</span> |
| <span class="ident">CharSearch</span>::<span class="ident">ForwardBefore</span>(<span class="ident">c</span>) <span class="op">=></span> { |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">cc</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">grapheme_at_cursor</span>() { |
| <span class="ident">shift</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">pos</span> <span class="op">+</span> <span class="ident">cc</span>.<span class="ident">len</span>(); |
| <span class="kw">if</span> <span class="ident">shift</span> <span class="op"><</span> <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">len</span>() { |
| <span class="self">self</span>.<span class="ident">buf</span>[<span class="ident">shift</span>..] |
| .<span class="ident">char_indices</span>() |
| .<span class="ident">filter</span>(<span class="op">|</span><span class="kw-2">&</span>(_, <span class="ident">ch</span>)<span class="op">|</span> <span class="ident">ch</span> <span class="op">==</span> <span class="ident">c</span>) |
| .<span class="ident">take</span>(<span class="ident">n</span>) |
| .<span class="ident">last</span>() |
| .<span class="ident">map</span>(<span class="op">|</span>(<span class="ident">i</span>, _)<span class="op">|</span> <span class="ident">i</span>) |
| } <span class="kw">else</span> { |
| <span class="prelude-val">None</span> |
| } |
| } <span class="kw">else</span> { |
| <span class="prelude-val">None</span> |
| } |
| } |
| }; |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">pos</span>) <span class="op">=</span> <span class="ident">search_result</span> { |
| <span class="prelude-val">Some</span>(<span class="kw">match</span> <span class="kw-2">*</span><span class="ident">cs</span> { |
| <span class="ident">CharSearch</span>::<span class="ident">Backward</span>(_) <span class="op">=></span> <span class="ident">pos</span>, |
| <span class="ident">CharSearch</span>::<span class="ident">BackwardAfter</span>(<span class="ident">c</span>) <span class="op">=></span> <span class="ident">pos</span> <span class="op">+</span> <span class="ident">c</span>.<span class="ident">len_utf8</span>(), |
| <span class="ident">CharSearch</span>::<span class="ident">Forward</span>(_) <span class="op">=></span> <span class="ident">shift</span> <span class="op">+</span> <span class="ident">pos</span>, |
| <span class="ident">CharSearch</span>::<span class="ident">ForwardBefore</span>(_) <span class="op">=></span> { |
| <span class="ident">shift</span> <span class="op">+</span> <span class="ident">pos</span> <span class="op">-</span> |
| <span class="self">self</span>.<span class="ident">buf</span>[..<span class="ident">shift</span> <span class="op">+</span> <span class="ident">pos</span>] |
| .<span class="ident">chars</span>() |
| .<span class="ident">next_back</span>() |
| .<span class="ident">unwrap</span>() |
| .<span class="ident">len_utf8</span>() |
| } |
| }) |
| } <span class="kw">else</span> { |
| <span class="prelude-val">None</span> |
| } |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">move_to</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">cs</span>: <span class="ident">CharSearch</span>, <span class="ident">n</span>: <span class="ident">RepeatCount</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">pos</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">search_char_pos</span>(<span class="kw-2">&</span><span class="ident">cs</span>, <span class="ident">n</span>) { |
| <span class="self">self</span>.<span class="ident">pos</span> <span class="op">=</span> <span class="ident">pos</span>; |
| <span class="bool-val">true</span> |
| } <span class="kw">else</span> { |
| <span class="bool-val">false</span> |
| } |
| } |
| |
| <span class="doccomment">/// Kill from the cursor to the end of the current word,</span> |
| <span class="doccomment">/// or, if between words, to the end of the next word.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">delete_word</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">at</span>: <span class="ident">At</span>, <span class="ident">word_def</span>: <span class="ident">Word</span>, <span class="ident">n</span>: <span class="ident">RepeatCount</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> { |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">pos</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">next_word_pos</span>(<span class="self">self</span>.<span class="ident">pos</span>, <span class="ident">at</span>, <span class="ident">word_def</span>, <span class="ident">n</span>) { |
| <span class="kw">let</span> <span class="ident">word</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">drain</span>(<span class="self">self</span>.<span class="ident">pos</span>..<span class="ident">pos</span>).<span class="ident">collect</span>(); |
| <span class="prelude-val">Some</span>(<span class="ident">word</span>) |
| } <span class="kw">else</span> { |
| <span class="prelude-val">None</span> |
| } |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">delete_to</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">cs</span>: <span class="ident">CharSearch</span>, <span class="ident">n</span>: <span class="ident">RepeatCount</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> { |
| <span class="kw">let</span> <span class="ident">search_result</span> <span class="op">=</span> <span class="kw">match</span> <span class="ident">cs</span> { |
| <span class="ident">CharSearch</span>::<span class="ident">ForwardBefore</span>(<span class="ident">c</span>) <span class="op">=></span> <span class="self">self</span>.<span class="ident">search_char_pos</span>(<span class="kw-2">&</span><span class="ident">CharSearch</span>::<span class="ident">Forward</span>(<span class="ident">c</span>), <span class="ident">n</span>), |
| _ <span class="op">=></span> <span class="self">self</span>.<span class="ident">search_char_pos</span>(<span class="kw-2">&</span><span class="ident">cs</span>, <span class="ident">n</span>), |
| }; |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">pos</span>) <span class="op">=</span> <span class="ident">search_result</span> { |
| <span class="kw">let</span> <span class="ident">chunk</span> <span class="op">=</span> <span class="kw">match</span> <span class="ident">cs</span> { |
| <span class="ident">CharSearch</span>::<span class="ident">Backward</span>(_) <span class="op">|</span> |
| <span class="ident">CharSearch</span>::<span class="ident">BackwardAfter</span>(_) <span class="op">=></span> { |
| <span class="kw">let</span> <span class="ident">end</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">pos</span>; |
| <span class="self">self</span>.<span class="ident">pos</span> <span class="op">=</span> <span class="ident">pos</span>; |
| <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">drain</span>(<span class="ident">pos</span>..<span class="ident">end</span>).<span class="ident">collect</span>() |
| } |
| <span class="ident">CharSearch</span>::<span class="ident">ForwardBefore</span>(_) <span class="op">=></span> <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">drain</span>(<span class="self">self</span>.<span class="ident">pos</span>..<span class="ident">pos</span>).<span class="ident">collect</span>(), |
| <span class="ident">CharSearch</span>::<span class="ident">Forward</span>(<span class="ident">c</span>) <span class="op">=></span> <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">drain</span>(<span class="self">self</span>.<span class="ident">pos</span>..<span class="ident">pos</span> <span class="op">+</span> <span class="ident">c</span>.<span class="ident">len_utf8</span>()).<span class="ident">collect</span>(), |
| }; |
| <span class="prelude-val">Some</span>(<span class="ident">chunk</span>) |
| } <span class="kw">else</span> { |
| <span class="prelude-val">None</span> |
| } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">skip_whitespace</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span> { |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">pos</span> <span class="op">==</span> <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">len</span>() { |
| <span class="kw">return</span> <span class="prelude-val">None</span>; |
| } |
| <span class="self">self</span>.<span class="ident">buf</span>[<span class="self">self</span>.<span class="ident">pos</span>..] |
| .<span class="ident">grapheme_indices</span>(<span class="bool-val">true</span>) |
| .<span class="ident">filter</span>(<span class="op">|</span><span class="kw-2">&</span>(_, <span class="ident">ch</span>)<span class="op">|</span> <span class="ident">ch</span>.<span class="ident">chars</span>().<span class="ident">all</span>(<span class="op">|</span><span class="ident">c</span><span class="op">|</span> <span class="ident">c</span>.<span class="ident">is_alphanumeric</span>())) |
| .<span class="ident">map</span>(<span class="op">|</span>(<span class="ident">i</span>, _)<span class="op">|</span> <span class="ident">i</span>) |
| .<span class="ident">next</span>() |
| .<span class="ident">map</span>(<span class="op">|</span><span class="ident">i</span><span class="op">|</span> <span class="ident">i</span> <span class="op">+</span> <span class="self">self</span>.<span class="ident">pos</span>) |
| } |
| <span class="doccomment">/// Alter the next word.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">edit_word</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">a</span>: <span class="ident">WordAction</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">start</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">skip_whitespace</span>() { |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">end</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">next_word_pos</span>(<span class="ident">start</span>, <span class="ident">At</span>::<span class="ident">AfterEnd</span>, <span class="ident">Word</span>::<span class="ident">Emacs</span>, <span class="number">1</span>) { |
| <span class="kw">if</span> <span class="ident">start</span> <span class="op">==</span> <span class="ident">end</span> { |
| <span class="kw">return</span> <span class="bool-val">false</span>; |
| } |
| <span class="kw">let</span> <span class="ident">word</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">drain</span>(<span class="ident">start</span>..<span class="ident">end</span>).<span class="ident">collect</span>::<span class="op"><</span><span class="ident">String</span><span class="op">></span>(); |
| <span class="kw">let</span> <span class="ident">result</span> <span class="op">=</span> <span class="kw">match</span> <span class="ident">a</span> { |
| <span class="ident">WordAction</span>::<span class="ident">CAPITALIZE</span> <span class="op">=></span> { |
| <span class="kw">let</span> <span class="ident">ch</span> <span class="op">=</span> (<span class="kw-2">&</span><span class="ident">word</span>).<span class="ident">graphemes</span>(<span class="bool-val">true</span>).<span class="ident">next</span>().<span class="ident">unwrap</span>(); |
| <span class="kw">let</span> <span class="ident">cap</span> <span class="op">=</span> <span class="ident">ch</span>.<span class="ident">to_uppercase</span>(); |
| <span class="ident">cap</span> <span class="op">+</span> <span class="kw-2">&</span><span class="ident">word</span>[<span class="ident">ch</span>.<span class="ident">len</span>()..].<span class="ident">to_lowercase</span>() |
| } |
| <span class="ident">WordAction</span>::<span class="ident">LOWERCASE</span> <span class="op">=></span> <span class="ident">word</span>.<span class="ident">to_lowercase</span>(), |
| <span class="ident">WordAction</span>::<span class="ident">UPPERCASE</span> <span class="op">=></span> <span class="ident">word</span>.<span class="ident">to_uppercase</span>(), |
| }; |
| <span class="self">self</span>.<span class="ident">insert_str</span>(<span class="ident">start</span>, <span class="kw-2">&</span><span class="ident">result</span>); |
| <span class="self">self</span>.<span class="ident">pos</span> <span class="op">=</span> <span class="ident">start</span> <span class="op">+</span> <span class="ident">result</span>.<span class="ident">len</span>(); |
| <span class="kw">return</span> <span class="bool-val">true</span>; |
| } |
| } |
| <span class="bool-val">false</span> |
| } |
| |
| <span class="doccomment">/// Transpose two words</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">transpose_words</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">n</span>: <span class="ident">RepeatCount</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| <span class="kw">let</span> <span class="ident">word_def</span> <span class="op">=</span> <span class="ident">Word</span>::<span class="ident">Emacs</span>; |
| <span class="self">self</span>.<span class="ident">move_to_next_word</span>(<span class="ident">At</span>::<span class="ident">AfterEnd</span>, <span class="ident">word_def</span>, <span class="ident">n</span>); |
| <span class="kw">let</span> <span class="ident">w2_end</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">pos</span>; |
| <span class="self">self</span>.<span class="ident">move_to_prev_word</span>(<span class="ident">word_def</span>, <span class="number">1</span>); |
| <span class="kw">let</span> <span class="ident">w2_beg</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">pos</span>; |
| <span class="self">self</span>.<span class="ident">move_to_prev_word</span>(<span class="ident">word_def</span>, <span class="ident">n</span>); |
| <span class="kw">let</span> <span class="ident">w1_beg</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">pos</span>; |
| <span class="self">self</span>.<span class="ident">move_to_next_word</span>(<span class="ident">At</span>::<span class="ident">AfterEnd</span>, <span class="ident">word_def</span>, <span class="number">1</span>); |
| <span class="kw">let</span> <span class="ident">w1_end</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">pos</span>; |
| <span class="kw">if</span> <span class="ident">w1_beg</span> <span class="op">==</span> <span class="ident">w2_beg</span> <span class="op">||</span> <span class="ident">w2_beg</span> <span class="op"><</span> <span class="ident">w1_end</span> { |
| <span class="kw">return</span> <span class="bool-val">false</span>; |
| } |
| |
| <span class="kw">let</span> <span class="ident">w1</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">buf</span>[<span class="ident">w1_beg</span>..<span class="ident">w1_end</span>].<span class="ident">to_string</span>(); |
| |
| <span class="kw">let</span> <span class="ident">w2</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">drain</span>(<span class="ident">w2_beg</span>..<span class="ident">w2_end</span>).<span class="ident">collect</span>::<span class="op"><</span><span class="ident">String</span><span class="op">></span>(); |
| <span class="self">self</span>.<span class="ident">insert_str</span>(<span class="ident">w2_beg</span>, <span class="kw-2">&</span><span class="ident">w1</span>); |
| |
| <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">drain</span>(<span class="ident">w1_beg</span>..<span class="ident">w1_end</span>); |
| <span class="self">self</span>.<span class="ident">insert_str</span>(<span class="ident">w1_beg</span>, <span class="kw-2">&</span><span class="ident">w2</span>); |
| |
| <span class="self">self</span>.<span class="ident">pos</span> <span class="op">=</span> <span class="ident">w2_end</span>; |
| <span class="bool-val">true</span> |
| } |
| |
| <span class="doccomment">/// Replaces the content between [`start`..`end`] with `text`</span> |
| <span class="doccomment">/// and positions the cursor to the end of text.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">replace</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">range</span>: <span class="ident">Range</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span>, <span class="ident">text</span>: <span class="kw-2">&</span><span class="ident">str</span>) { |
| <span class="kw">let</span> <span class="ident">start</span> <span class="op">=</span> <span class="ident">range</span>.<span class="ident">start</span>; |
| <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">drain</span>(<span class="ident">range</span>); |
| <span class="self">self</span>.<span class="ident">insert_str</span>(<span class="ident">start</span>, <span class="ident">text</span>); |
| <span class="self">self</span>.<span class="ident">pos</span> <span class="op">=</span> <span class="ident">start</span> <span class="op">+</span> <span class="ident">text</span>.<span class="ident">len</span>(); |
| } |
| |
| <span class="kw">fn</span> <span class="ident">insert_str</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">idx</span>: <span class="ident">usize</span>, <span class="ident">s</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| <span class="kw">if</span> <span class="ident">idx</span> <span class="op">==</span> <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">len</span>() { |
| <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">push_str</span>(<span class="ident">s</span>); |
| <span class="bool-val">true</span> |
| } <span class="kw">else</span> { |
| <span class="ident">insert_str</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>.<span class="ident">buf</span>, <span class="ident">idx</span>, <span class="ident">s</span>); |
| <span class="bool-val">false</span> |
| } |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">copy</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">mvt</span>: <span class="ident">Movement</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> { |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">is_empty</span>() { |
| <span class="kw">return</span> <span class="prelude-val">None</span>; |
| } |
| <span class="kw">match</span> <span class="ident">mvt</span> { |
| <span class="ident">Movement</span>::<span class="ident">WholeLine</span> <span class="op">=></span> <span class="prelude-val">Some</span>(<span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">clone</span>()), |
| <span class="ident">Movement</span>::<span class="ident">BeginningOfLine</span> <span class="op">=></span> { |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">pos</span> <span class="op">==</span> <span class="number">0</span> { |
| <span class="prelude-val">None</span> |
| } <span class="kw">else</span> { |
| <span class="prelude-val">Some</span>(<span class="self">self</span>.<span class="ident">buf</span>[..<span class="self">self</span>.<span class="ident">pos</span>].<span class="ident">to_string</span>()) |
| } |
| } |
| <span class="ident">Movement</span>::<span class="ident">ViFirstPrint</span> <span class="op">=></span> { |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">pos</span> <span class="op">==</span> <span class="number">0</span> { |
| <span class="prelude-val">None</span> |
| } <span class="kw">else</span> <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">pos</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">next_word_pos</span>(<span class="number">0</span>, <span class="ident">At</span>::<span class="ident">Start</span>, <span class="ident">Word</span>::<span class="ident">Big</span>, <span class="number">1</span>) { |
| <span class="prelude-val">Some</span>(<span class="self">self</span>.<span class="ident">buf</span>[<span class="ident">pos</span>..<span class="self">self</span>.<span class="ident">pos</span>].<span class="ident">to_owned</span>()) |
| } <span class="kw">else</span> { |
| <span class="prelude-val">None</span> |
| } |
| } |
| <span class="ident">Movement</span>::<span class="ident">EndOfLine</span> <span class="op">=></span> { |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">pos</span> <span class="op">==</span> <span class="self">self</span>.<span class="ident">buf</span>.<span class="ident">len</span>() { |
| <span class="prelude-val">None</span> |
| } <span class="kw">else</span> { |
| <span class="prelude-val">Some</span>(<span class="self">self</span>.<span class="ident">buf</span>[<span class="self">self</span>.<span class="ident">pos</span>..].<span class="ident">to_string</span>()) |
| } |
| } |
| <span class="ident">Movement</span>::<span class="ident">BackwardWord</span>(<span class="ident">n</span>, <span class="ident">word_def</span>) <span class="op">=></span> { |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">pos</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">prev_word_pos</span>(<span class="self">self</span>.<span class="ident">pos</span>, <span class="ident">word_def</span>, <span class="ident">n</span>) { |
| <span class="prelude-val">Some</span>(<span class="self">self</span>.<span class="ident">buf</span>[<span class="ident">pos</span>..<span class="self">self</span>.<span class="ident">pos</span>].<span class="ident">to_string</span>()) |
| } <span class="kw">else</span> { |
| <span class="prelude-val">None</span> |
| } |
| } |
| <span class="ident">Movement</span>::<span class="ident">ForwardWord</span>(<span class="ident">n</span>, <span class="ident">at</span>, <span class="ident">word_def</span>) <span class="op">=></span> { |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">pos</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">next_word_pos</span>(<span class="self">self</span>.<span class="ident">pos</span>, <span class="ident">at</span>, <span class="ident">word_def</span>, <span class="ident">n</span>) { |
| <span class="prelude-val">Some</span>(<span class="self">self</span>.<span class="ident">buf</span>[<span class="self">self</span>.<span class="ident">pos</span>..<span class="ident">pos</span>].<span class="ident">to_string</span>()) |
| } <span class="kw">else</span> { |
| <span class="prelude-val">None</span> |
| } |
| } |
| <span class="ident">Movement</span>::<span class="ident">ViCharSearch</span>(<span class="ident">n</span>, <span class="ident">cs</span>) <span class="op">=></span> { |
| <span class="kw">let</span> <span class="ident">search_result</span> <span class="op">=</span> <span class="kw">match</span> <span class="ident">cs</span> { |
| <span class="ident">CharSearch</span>::<span class="ident">ForwardBefore</span>(<span class="ident">c</span>) <span class="op">=></span> { |
| <span class="self">self</span>.<span class="ident">search_char_pos</span>(<span class="kw-2">&</span><span class="ident">CharSearch</span>::<span class="ident">Forward</span>(<span class="ident">c</span>), <span class="ident">n</span>) |
| } |
| _ <span class="op">=></span> <span class="self">self</span>.<span class="ident">search_char_pos</span>(<span class="kw-2">&</span><span class="ident">cs</span>, <span class="ident">n</span>), |
| }; |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">pos</span>) <span class="op">=</span> <span class="ident">search_result</span> { |
| <span class="prelude-val">Some</span>(<span class="kw">match</span> <span class="ident">cs</span> { |
| <span class="ident">CharSearch</span>::<span class="ident">Backward</span>(_) <span class="op">|</span> |
| <span class="ident">CharSearch</span>::<span class="ident">BackwardAfter</span>(_) <span class="op">=></span> <span class="self">self</span>.<span class="ident">buf</span>[<span class="ident">pos</span>..<span class="self">self</span>.<span class="ident">pos</span>].<span class="ident">to_string</span>(), |
| <span class="ident">CharSearch</span>::<span class="ident">ForwardBefore</span>(_) <span class="op">=></span> <span class="self">self</span>.<span class="ident">buf</span>[<span class="self">self</span>.<span class="ident">pos</span>..<span class="ident">pos</span>].<span class="ident">to_string</span>(), |
| <span class="ident">CharSearch</span>::<span class="ident">Forward</span>(<span class="ident">c</span>) <span class="op">=></span> { |
| <span class="self">self</span>.<span class="ident">buf</span>[<span class="self">self</span>.<span class="ident">pos</span>..<span class="ident">pos</span> <span class="op">+</span> <span class="ident">c</span>.<span class="ident">len_utf8</span>()].<span class="ident">to_string</span>() |
| } |
| }) |
| } <span class="kw">else</span> { |
| <span class="prelude-val">None</span> |
| } |
| } |
| <span class="ident">Movement</span>::<span class="ident">BackwardChar</span>(<span class="ident">n</span>) <span class="op">=></span> { |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">pos</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">prev_pos</span>(<span class="ident">n</span>) { |
| <span class="prelude-val">Some</span>(<span class="self">self</span>.<span class="ident">buf</span>[<span class="ident">pos</span>..<span class="self">self</span>.<span class="ident">pos</span>].<span class="ident">to_string</span>()) |
| } <span class="kw">else</span> { |
| <span class="prelude-val">None</span> |
| } |
| } |
| <span class="ident">Movement</span>::<span class="ident">ForwardChar</span>(<span class="ident">n</span>) <span class="op">=></span> { |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">pos</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">next_pos</span>(<span class="ident">n</span>) { |
| <span class="prelude-val">Some</span>(<span class="self">self</span>.<span class="ident">buf</span>[<span class="self">self</span>.<span class="ident">pos</span>..<span class="ident">pos</span>].<span class="ident">to_string</span>()) |
| } <span class="kw">else</span> { |
| <span class="prelude-val">None</span> |
| } |
| } |
| } |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="ident">Deref</span> <span class="kw">for</span> <span class="ident">LineBuffer</span> { |
| <span class="kw">type</span> <span class="ident">Target</span> <span class="op">=</span> <span class="ident">str</span>; |
| |
| <span class="kw">fn</span> <span class="ident">deref</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">str</span> { |
| <span class="self">self</span>.<span class="ident">as_str</span>() |
| } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">insert_str</span>(<span class="ident">buf</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">String</span>, <span class="ident">idx</span>: <span class="ident">usize</span>, <span class="ident">s</span>: <span class="kw-2">&</span><span class="ident">str</span>) { |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">ptr</span>; |
| |
| <span class="kw">let</span> <span class="ident">len</span> <span class="op">=</span> <span class="ident">buf</span>.<span class="ident">len</span>(); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">idx</span> <span class="op"><=</span> <span class="ident">len</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">buf</span>.<span class="ident">is_char_boundary</span>(<span class="ident">idx</span>)); |
| <span class="kw">let</span> <span class="ident">amt</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">len</span>(); |
| <span class="ident">buf</span>.<span class="ident">reserve</span>(<span class="ident">amt</span>); |
| |
| <span class="kw">unsafe</span> { |
| <span class="kw">let</span> <span class="ident">v</span> <span class="op">=</span> <span class="ident">buf</span>.<span class="ident">as_mut_vec</span>(); |
| <span class="ident">ptr</span>::<span class="ident">copy</span>(<span class="ident">v</span>.<span class="ident">as_ptr</span>().<span class="ident">offset</span>(<span class="ident">idx</span> <span class="kw">as</span> <span class="ident">isize</span>), |
| <span class="ident">v</span>.<span class="ident">as_mut_ptr</span>().<span class="ident">offset</span>((<span class="ident">idx</span> <span class="op">+</span> <span class="ident">amt</span>) <span class="kw">as</span> <span class="ident">isize</span>), |
| <span class="ident">len</span> <span class="op">-</span> <span class="ident">idx</span>); |
| <span class="ident">ptr</span>::<span class="ident">copy_nonoverlapping</span>(<span class="ident">s</span>.<span class="ident">as_ptr</span>(), <span class="ident">v</span>.<span class="ident">as_mut_ptr</span>().<span class="ident">offset</span>(<span class="ident">idx</span> <span class="kw">as</span> <span class="ident">isize</span>), <span class="ident">amt</span>); |
| <span class="ident">v</span>.<span class="ident">set_len</span>(<span class="ident">len</span> <span class="op">+</span> <span class="ident">amt</span>); |
| } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">is_start_of_word</span>(<span class="ident">word_def</span>: <span class="ident">Word</span>, <span class="ident">previous</span>: <span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">grapheme</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| (<span class="op">!</span><span class="ident">is_word_char</span>(<span class="ident">word_def</span>, <span class="ident">previous</span>) <span class="op">&&</span> <span class="ident">is_word_char</span>(<span class="ident">word_def</span>, <span class="ident">grapheme</span>)) <span class="op">||</span> |
| (<span class="ident">word_def</span> <span class="op">==</span> <span class="ident">Word</span>::<span class="ident">Vi</span> <span class="op">&&</span> <span class="op">!</span><span class="ident">is_other_char</span>(<span class="ident">previous</span>) <span class="op">&&</span> <span class="ident">is_other_char</span>(<span class="ident">grapheme</span>)) |
| } |
| <span class="kw">fn</span> <span class="ident">is_end_of_word</span>(<span class="ident">word_def</span>: <span class="ident">Word</span>, <span class="ident">grapheme</span>: <span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">next</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| (<span class="op">!</span><span class="ident">is_word_char</span>(<span class="ident">word_def</span>, <span class="ident">next</span>) <span class="op">&&</span> <span class="ident">is_word_char</span>(<span class="ident">word_def</span>, <span class="ident">grapheme</span>)) <span class="op">||</span> |
| (<span class="ident">word_def</span> <span class="op">==</span> <span class="ident">Word</span>::<span class="ident">Vi</span> <span class="op">&&</span> <span class="op">!</span><span class="ident">is_other_char</span>(<span class="ident">next</span>) <span class="op">&&</span> <span class="ident">is_other_char</span>(<span class="ident">grapheme</span>)) |
| } |
| |
| <span class="kw">fn</span> <span class="ident">is_word_char</span>(<span class="ident">word_def</span>: <span class="ident">Word</span>, <span class="ident">grapheme</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| <span class="kw">match</span> <span class="ident">word_def</span> { |
| <span class="ident">Word</span>::<span class="ident">Emacs</span> <span class="op">=></span> <span class="ident">grapheme</span>.<span class="ident">chars</span>().<span class="ident">all</span>(<span class="op">|</span><span class="ident">c</span><span class="op">|</span> <span class="ident">c</span>.<span class="ident">is_alphanumeric</span>()), |
| <span class="ident">Word</span>::<span class="ident">Vi</span> <span class="op">=></span> <span class="ident">is_vi_word_char</span>(<span class="ident">grapheme</span>), |
| <span class="ident">Word</span>::<span class="ident">Big</span> <span class="op">=></span> <span class="op">!</span><span class="ident">grapheme</span>.<span class="ident">chars</span>().<span class="ident">all</span>(<span class="op">|</span><span class="ident">c</span><span class="op">|</span> <span class="ident">c</span>.<span class="ident">is_whitespace</span>()), |
| } |
| } |
| <span class="kw">fn</span> <span class="ident">is_vi_word_char</span>(<span class="ident">grapheme</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| <span class="ident">grapheme</span>.<span class="ident">chars</span>().<span class="ident">all</span>(<span class="op">|</span><span class="ident">c</span><span class="op">|</span> <span class="ident">c</span>.<span class="ident">is_alphanumeric</span>()) <span class="op">||</span> <span class="ident">grapheme</span> <span class="op">==</span> <span class="string">"_"</span> |
| } |
| <span class="kw">fn</span> <span class="ident">is_other_char</span>(<span class="ident">grapheme</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| <span class="op">!</span>(<span class="ident">grapheme</span>.<span class="ident">chars</span>().<span class="ident">all</span>(<span class="op">|</span><span class="ident">c</span><span class="op">|</span> <span class="ident">c</span>.<span class="ident">is_whitespace</span>()) <span class="op">||</span> <span class="ident">is_vi_word_char</span>(<span class="ident">grapheme</span>)) |
| } |
| |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span> |
| <span class="kw">mod</span> <span class="ident">test</span> { |
| <span class="kw">use</span> <span class="ident">keymap</span>::{<span class="ident">At</span>, <span class="ident">CharSearch</span>, <span class="ident">Word</span>}; |
| <span class="kw">use</span> <span class="kw">super</span>::{<span class="ident">LineBuffer</span>, <span class="ident">MAX_LINE</span>, <span class="ident">WordAction</span>}; |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">next_pos</span>() { |
| <span class="kw">let</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"ö̲g̈"</span>, <span class="number">0</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">7</span>, <span class="ident">s</span>.<span class="ident">len</span>()); |
| <span class="kw">let</span> <span class="ident">pos</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">next_pos</span>(<span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="number">4</span>), <span class="ident">pos</span>); |
| |
| <span class="kw">let</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"ö̲g̈"</span>, <span class="number">4</span>); |
| <span class="kw">let</span> <span class="ident">pos</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">next_pos</span>(<span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="number">7</span>), <span class="ident">pos</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">prev_pos</span>() { |
| <span class="kw">let</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"ö̲g̈"</span>, <span class="number">4</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">7</span>, <span class="ident">s</span>.<span class="ident">len</span>()); |
| <span class="kw">let</span> <span class="ident">pos</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">prev_pos</span>(<span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="number">0</span>), <span class="ident">pos</span>); |
| |
| <span class="kw">let</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"ö̲g̈"</span>, <span class="number">7</span>); |
| <span class="kw">let</span> <span class="ident">pos</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">prev_pos</span>(<span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="number">4</span>), <span class="ident">pos</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">insert</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">with_capacity</span>(<span class="ident">MAX_LINE</span>); |
| <span class="kw">let</span> <span class="ident">push</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">insert</span>(<span class="string">'α'</span>, <span class="number">1</span>).<span class="ident">unwrap</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"α"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">2</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="bool-val">true</span>, <span class="ident">push</span>); |
| |
| <span class="kw">let</span> <span class="ident">push</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">insert</span>(<span class="string">'ß'</span>, <span class="number">1</span>).<span class="ident">unwrap</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"αß"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">4</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="bool-val">true</span>, <span class="ident">push</span>); |
| |
| <span class="ident">s</span>.<span class="ident">pos</span> <span class="op">=</span> <span class="number">0</span>; |
| <span class="kw">let</span> <span class="ident">push</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">insert</span>(<span class="string">'γ'</span>, <span class="number">1</span>).<span class="ident">unwrap</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"γαß"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">2</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="bool-val">false</span>, <span class="ident">push</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">yank_after</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"αß"</span>, <span class="number">2</span>); |
| <span class="ident">s</span>.<span class="ident">move_forward</span>(<span class="number">1</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">yank</span>(<span class="string">"γδε"</span>, <span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="bool-val">true</span>), <span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"αßγδε"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">10</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">yank_before</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"αε"</span>, <span class="number">2</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">yank</span>(<span class="string">"ßγδ"</span>, <span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="bool-val">false</span>), <span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"αßγδε"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">8</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">moves</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"αß"</span>, <span class="number">4</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_backward</span>(<span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"αß"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">2</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="bool-val">true</span>, <span class="ident">ok</span>); |
| |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_forward</span>(<span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"αß"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">4</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="bool-val">true</span>, <span class="ident">ok</span>); |
| |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_home</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"αß"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">0</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="bool-val">true</span>, <span class="ident">ok</span>); |
| |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_end</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"αß"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">4</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="bool-val">true</span>, <span class="ident">ok</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">move_grapheme</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"ag̈"</span>, <span class="number">4</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">4</span>, <span class="ident">s</span>.<span class="ident">len</span>()); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_backward</span>(<span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="bool-val">true</span>, <span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">1</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_forward</span>(<span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="bool-val">true</span>, <span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">4</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">delete</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"αß"</span>, <span class="number">2</span>); |
| <span class="kw">let</span> <span class="ident">chars</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">delete</span>(<span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"α"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">2</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="string">"ß"</span>.<span class="ident">to_string</span>()), <span class="ident">chars</span>); |
| |
| <span class="kw">let</span> <span class="ident">chars</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">backspace</span>(<span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">""</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">0</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="string">"α"</span>.<span class="ident">to_string</span>()), <span class="ident">chars</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">kill</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"αßγδε"</span>, <span class="number">6</span>); |
| <span class="kw">let</span> <span class="ident">text</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">kill_line</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"αßγ"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">6</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="string">"δε"</span>.<span class="ident">to_string</span>()), <span class="ident">text</span>); |
| |
| <span class="ident">s</span>.<span class="ident">pos</span> <span class="op">=</span> <span class="number">4</span>; |
| <span class="kw">let</span> <span class="ident">text</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">discard_line</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"γ"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">0</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="string">"αß"</span>.<span class="ident">to_string</span>()), <span class="ident">text</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">transpose</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"aßc"</span>, <span class="number">1</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">transpose_chars</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"ßac"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">3</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="bool-val">true</span>, <span class="ident">ok</span>); |
| |
| <span class="ident">s</span>.<span class="ident">buf</span> <span class="op">=</span> <span class="ident">String</span>::<span class="ident">from</span>(<span class="string">"aßc"</span>); |
| <span class="ident">s</span>.<span class="ident">pos</span> <span class="op">=</span> <span class="number">3</span>; |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">transpose_chars</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"acß"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">4</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="bool-val">true</span>, <span class="ident">ok</span>); |
| |
| <span class="ident">s</span>.<span class="ident">buf</span> <span class="op">=</span> <span class="ident">String</span>::<span class="ident">from</span>(<span class="string">"aßc"</span>); |
| <span class="ident">s</span>.<span class="ident">pos</span> <span class="op">=</span> <span class="number">4</span>; |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">transpose_chars</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"acß"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">4</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="bool-val">true</span>, <span class="ident">ok</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">move_to_prev_word</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"a ß c"</span>, <span class="number">6</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_prev_word</span>(<span class="ident">Word</span>::<span class="ident">Emacs</span>, <span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"a ß c"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">2</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="bool-val">true</span>, <span class="ident">ok</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">move_to_prev_vi_word</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"alpha ,beta/rho; mu"</span>, <span class="number">19</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_prev_word</span>(<span class="ident">Word</span>::<span class="ident">Vi</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">17</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_prev_word</span>(<span class="ident">Word</span>::<span class="ident">Vi</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">15</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_prev_word</span>(<span class="ident">Word</span>::<span class="ident">Vi</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">12</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_prev_word</span>(<span class="ident">Word</span>::<span class="ident">Vi</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">11</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_prev_word</span>(<span class="ident">Word</span>::<span class="ident">Vi</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">7</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_prev_word</span>(<span class="ident">Word</span>::<span class="ident">Vi</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">6</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_prev_word</span>(<span class="ident">Word</span>::<span class="ident">Vi</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">0</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_prev_word</span>(<span class="ident">Word</span>::<span class="ident">Vi</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">ok</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">move_to_prev_big_word</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"alpha ,beta/rho; mu"</span>, <span class="number">19</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_prev_word</span>(<span class="ident">Word</span>::<span class="ident">Big</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">17</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_prev_word</span>(<span class="ident">Word</span>::<span class="ident">Big</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">6</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_prev_word</span>(<span class="ident">Word</span>::<span class="ident">Big</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">0</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_prev_word</span>(<span class="ident">Word</span>::<span class="ident">Big</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">ok</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">move_to_forward</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"αßγδε"</span>, <span class="number">2</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to</span>(<span class="ident">CharSearch</span>::<span class="ident">ForwardBefore</span>(<span class="string">'ε'</span>), <span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="bool-val">true</span>, <span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">6</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"αßγδε"</span>, <span class="number">2</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to</span>(<span class="ident">CharSearch</span>::<span class="ident">Forward</span>(<span class="string">'ε'</span>), <span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="bool-val">true</span>, <span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">8</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"αßγδε"</span>, <span class="number">2</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to</span>(<span class="ident">CharSearch</span>::<span class="ident">Forward</span>(<span class="string">'ε'</span>), <span class="number">10</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="bool-val">true</span>, <span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">8</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">move_to_backward</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"αßγδε"</span>, <span class="number">8</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to</span>(<span class="ident">CharSearch</span>::<span class="ident">BackwardAfter</span>(<span class="string">'ß'</span>), <span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="bool-val">true</span>, <span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">4</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"αßγδε"</span>, <span class="number">8</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to</span>(<span class="ident">CharSearch</span>::<span class="ident">Backward</span>(<span class="string">'ß'</span>), <span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="bool-val">true</span>, <span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">2</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">delete_prev_word</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"a ß c"</span>, <span class="number">6</span>); |
| <span class="kw">let</span> <span class="ident">text</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">delete_prev_word</span>(<span class="ident">Word</span>::<span class="ident">Big</span>, <span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"a c"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">2</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="string">"ß "</span>.<span class="ident">to_string</span>()), <span class="ident">text</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">move_to_next_word</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"a ß c"</span>, <span class="number">1</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_next_word</span>(<span class="ident">At</span>::<span class="ident">AfterEnd</span>, <span class="ident">Word</span>::<span class="ident">Emacs</span>, <span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"a ß c"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">4</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="bool-val">true</span>, <span class="ident">ok</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">move_to_end_of_word</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"a ßeta c"</span>, <span class="number">1</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_next_word</span>(<span class="ident">At</span>::<span class="ident">BeforeEnd</span>, <span class="ident">Word</span>::<span class="ident">Vi</span>, <span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"a ßeta c"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">6</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="bool-val">true</span>, <span class="ident">ok</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">move_to_end_of_vi_word</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"alpha ,beta/rho; mu"</span>, <span class="number">0</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_next_word</span>(<span class="ident">At</span>::<span class="ident">BeforeEnd</span>, <span class="ident">Word</span>::<span class="ident">Vi</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">4</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_next_word</span>(<span class="ident">At</span>::<span class="ident">BeforeEnd</span>, <span class="ident">Word</span>::<span class="ident">Vi</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">6</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_next_word</span>(<span class="ident">At</span>::<span class="ident">BeforeEnd</span>, <span class="ident">Word</span>::<span class="ident">Vi</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">10</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_next_word</span>(<span class="ident">At</span>::<span class="ident">BeforeEnd</span>, <span class="ident">Word</span>::<span class="ident">Vi</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">11</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_next_word</span>(<span class="ident">At</span>::<span class="ident">BeforeEnd</span>, <span class="ident">Word</span>::<span class="ident">Vi</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">14</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_next_word</span>(<span class="ident">At</span>::<span class="ident">BeforeEnd</span>, <span class="ident">Word</span>::<span class="ident">Vi</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">15</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_next_word</span>(<span class="ident">At</span>::<span class="ident">BeforeEnd</span>, <span class="ident">Word</span>::<span class="ident">Vi</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">18</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_next_word</span>(<span class="ident">At</span>::<span class="ident">BeforeEnd</span>, <span class="ident">Word</span>::<span class="ident">Vi</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">ok</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">move_to_end_of_big_word</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"alpha ,beta/rho; mu"</span>, <span class="number">0</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_next_word</span>(<span class="ident">At</span>::<span class="ident">BeforeEnd</span>, <span class="ident">Word</span>::<span class="ident">Big</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">4</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_next_word</span>(<span class="ident">At</span>::<span class="ident">BeforeEnd</span>, <span class="ident">Word</span>::<span class="ident">Big</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">15</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_next_word</span>(<span class="ident">At</span>::<span class="ident">BeforeEnd</span>, <span class="ident">Word</span>::<span class="ident">Big</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">18</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_next_word</span>(<span class="ident">At</span>::<span class="ident">BeforeEnd</span>, <span class="ident">Word</span>::<span class="ident">Big</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">ok</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">move_to_start_of_word</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"a ß c"</span>, <span class="number">2</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_next_word</span>(<span class="ident">At</span>::<span class="ident">Start</span>, <span class="ident">Word</span>::<span class="ident">Emacs</span>, <span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"a ß c"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">6</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="bool-val">true</span>, <span class="ident">ok</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">move_to_start_of_vi_word</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"alpha ,beta/rho; mu"</span>, <span class="number">0</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_next_word</span>(<span class="ident">At</span>::<span class="ident">Start</span>, <span class="ident">Word</span>::<span class="ident">Vi</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">6</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_next_word</span>(<span class="ident">At</span>::<span class="ident">Start</span>, <span class="ident">Word</span>::<span class="ident">Vi</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">7</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_next_word</span>(<span class="ident">At</span>::<span class="ident">Start</span>, <span class="ident">Word</span>::<span class="ident">Vi</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">11</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_next_word</span>(<span class="ident">At</span>::<span class="ident">Start</span>, <span class="ident">Word</span>::<span class="ident">Vi</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">12</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_next_word</span>(<span class="ident">At</span>::<span class="ident">Start</span>, <span class="ident">Word</span>::<span class="ident">Vi</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">15</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_next_word</span>(<span class="ident">At</span>::<span class="ident">Start</span>, <span class="ident">Word</span>::<span class="ident">Vi</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">17</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_next_word</span>(<span class="ident">At</span>::<span class="ident">Start</span>, <span class="ident">Word</span>::<span class="ident">Vi</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">18</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_next_word</span>(<span class="ident">At</span>::<span class="ident">Start</span>, <span class="ident">Word</span>::<span class="ident">Vi</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">ok</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">move_to_start_of_big_word</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"alpha ,beta/rho; mu"</span>, <span class="number">0</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_next_word</span>(<span class="ident">At</span>::<span class="ident">Start</span>, <span class="ident">Word</span>::<span class="ident">Big</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">6</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_next_word</span>(<span class="ident">At</span>::<span class="ident">Start</span>, <span class="ident">Word</span>::<span class="ident">Big</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">17</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_next_word</span>(<span class="ident">At</span>::<span class="ident">Start</span>, <span class="ident">Word</span>::<span class="ident">Big</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">ok</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">18</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="kw">let</span> <span class="ident">ok</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">move_to_next_word</span>(<span class="ident">At</span>::<span class="ident">Start</span>, <span class="ident">Word</span>::<span class="ident">Big</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">ok</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">delete_word</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"a ß c"</span>, <span class="number">1</span>); |
| <span class="kw">let</span> <span class="ident">text</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">delete_word</span>(<span class="ident">At</span>::<span class="ident">AfterEnd</span>, <span class="ident">Word</span>::<span class="ident">Emacs</span>, <span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"a c"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">1</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="string">" ß"</span>.<span class="ident">to_string</span>()), <span class="ident">text</span>); |
| |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"test"</span>, <span class="number">0</span>); |
| <span class="kw">let</span> <span class="ident">text</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">delete_word</span>(<span class="ident">At</span>::<span class="ident">AfterEnd</span>, <span class="ident">Word</span>::<span class="ident">Vi</span>, <span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">""</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">0</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="string">"test"</span>.<span class="ident">to_string</span>()), <span class="ident">text</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">delete_til_start_of_word</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"a ß c"</span>, <span class="number">2</span>); |
| <span class="kw">let</span> <span class="ident">text</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">delete_word</span>(<span class="ident">At</span>::<span class="ident">Start</span>, <span class="ident">Word</span>::<span class="ident">Emacs</span>, <span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"a c"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">2</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="string">"ß "</span>.<span class="ident">to_string</span>()), <span class="ident">text</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">delete_to_forward</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"αßγδε"</span>, <span class="number">2</span>); |
| <span class="kw">let</span> <span class="ident">text</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">delete_to</span>(<span class="ident">CharSearch</span>::<span class="ident">ForwardBefore</span>(<span class="string">'ε'</span>), <span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="string">"ßγδ"</span>.<span class="ident">to_string</span>()), <span class="ident">text</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"αε"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">2</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"αßγδε"</span>, <span class="number">2</span>); |
| <span class="kw">let</span> <span class="ident">text</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">delete_to</span>(<span class="ident">CharSearch</span>::<span class="ident">Forward</span>(<span class="string">'ε'</span>), <span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="string">"ßγδε"</span>.<span class="ident">to_string</span>()), <span class="ident">text</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"α"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">2</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">delete_to_backward</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"αßγδε"</span>, <span class="number">8</span>); |
| <span class="kw">let</span> <span class="ident">text</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">delete_to</span>(<span class="ident">CharSearch</span>::<span class="ident">BackwardAfter</span>(<span class="string">'α'</span>), <span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="string">"ßγδ"</span>.<span class="ident">to_string</span>()), <span class="ident">text</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"αε"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">2</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"αßγδε"</span>, <span class="number">8</span>); |
| <span class="kw">let</span> <span class="ident">text</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">delete_to</span>(<span class="ident">CharSearch</span>::<span class="ident">Backward</span>(<span class="string">'ß'</span>), <span class="number">1</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="string">"ßγδ"</span>.<span class="ident">to_string</span>()), <span class="ident">text</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"αε"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">2</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">edit_word</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"a ßeta c"</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">s</span>.<span class="ident">edit_word</span>(<span class="ident">WordAction</span>::<span class="ident">UPPERCASE</span>)); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"a SSETA c"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">7</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"a ßetA c"</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">s</span>.<span class="ident">edit_word</span>(<span class="ident">WordAction</span>::<span class="ident">LOWERCASE</span>)); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"a ßeta c"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">7</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"a ßETA c"</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">s</span>.<span class="ident">edit_word</span>(<span class="ident">WordAction</span>::<span class="ident">CAPITALIZE</span>)); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"a SSeta c"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">7</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"test"</span>, <span class="number">1</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">s</span>.<span class="ident">edit_word</span>(<span class="ident">WordAction</span>::<span class="ident">CAPITALIZE</span>)); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"tEst"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">4</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">transpose_words</span>() { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"ßeta / δelta__"</span>, <span class="number">15</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">s</span>.<span class="ident">transpose_words</span>(<span class="number">1</span>)); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"δelta__ / ßeta"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">16</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"ßeta / δelta"</span>, <span class="number">14</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">s</span>.<span class="ident">transpose_words</span>(<span class="number">1</span>)); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"δelta / ßeta"</span>, <span class="ident">s</span>.<span class="ident">buf</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">14</span>, <span class="ident">s</span>.<span class="ident">pos</span>); |
| |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">" / δelta"</span>, <span class="number">8</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">s</span>.<span class="ident">transpose_words</span>(<span class="number">1</span>)); |
| |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">LineBuffer</span>::<span class="ident">init</span>(<span class="string">"ßeta / __"</span>, <span class="number">9</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">s</span>.<span class="ident">transpose_words</span>(<span class="number">1</span>)); |
| } |
| } |
| </pre> |
| </section> |
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