| // |
| // Copyright (C) 2016-2018 Google, Inc. |
| // Copyright (C) 2016 LunarG, Inc. |
| // |
| // All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions |
| // are met: |
| // |
| // Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // |
| // Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following |
| // disclaimer in the documentation and/or other materials provided |
| // with the distribution. |
| // |
| // Neither the name of Google, Inc., nor the names of its |
| // contributors may be used to endorse or promote products derived |
| // from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| // FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| // COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| // INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| // BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| // LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
| // ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| // POSSIBILITY OF SUCH DAMAGE. |
| // |
| |
| // |
| // This is a set of mutually recursive methods implementing the HLSL grammar. |
| // Generally, each returns |
| // - through an argument: a type specifically appropriate to which rule it |
| // recognized |
| // - through the return value: true/false to indicate whether or not it |
| // recognized its rule |
| // |
| // As much as possible, only grammar recognition should happen in this file, |
| // with all other work being farmed out to hlslParseHelper.cpp, which in turn |
| // will build the AST. |
| // |
| // The next token, yet to be "accepted" is always sitting in 'token'. |
| // When a method says it accepts a rule, that means all tokens involved |
| // in the rule will have been consumed, and none left in 'token'. |
| // |
| |
| #include "hlslTokens.h" |
| #include "hlslGrammar.h" |
| #include "hlslAttributes.h" |
| |
| namespace glslang { |
| |
| // Root entry point to this recursive decent parser. |
| // Return true if compilation unit was successfully accepted. |
| bool HlslGrammar::parse() |
| { |
| advanceToken(); |
| return acceptCompilationUnit(); |
| } |
| |
| void HlslGrammar::expected(const char* syntax) |
| { |
| parseContext.error(token.loc, "Expected", syntax, ""); |
| } |
| |
| void HlslGrammar::unimplemented(const char* error) |
| { |
| parseContext.error(token.loc, "Unimplemented", error, ""); |
| } |
| |
| // IDENTIFIER |
| // THIS |
| // type that can be used as IDENTIFIER |
| // |
| // Only process the next token if it is an identifier. |
| // Return true if it was an identifier. |
| bool HlslGrammar::acceptIdentifier(HlslToken& idToken) |
| { |
| // IDENTIFIER |
| if (peekTokenClass(EHTokIdentifier)) { |
| idToken = token; |
| advanceToken(); |
| return true; |
| } |
| |
| // THIS |
| // -> maps to the IDENTIFIER spelled with the internal special name for 'this' |
| if (peekTokenClass(EHTokThis)) { |
| idToken = token; |
| advanceToken(); |
| idToken.tokenClass = EHTokIdentifier; |
| idToken.string = NewPoolTString(intermediate.implicitThisName); |
| return true; |
| } |
| |
| // type that can be used as IDENTIFIER |
| |
| // Even though "sample", "bool", "float", etc keywords (for types, interpolation modifiers), |
| // they ARE still accepted as identifiers. This is not a dense space: e.g, "void" is not a |
| // valid identifier, nor is "linear". This code special cases the known instances of this, so |
| // e.g, "int sample;" or "float float;" is accepted. Other cases can be added here if needed. |
| |
| const char* idString = getTypeString(peek()); |
| if (idString == nullptr) |
| return false; |
| |
| token.string = NewPoolTString(idString); |
| token.tokenClass = EHTokIdentifier; |
| idToken = token; |
| typeIdentifiers = true; |
| |
| advanceToken(); |
| |
| return true; |
| } |
| |
| // compilationUnit |
| // : declaration_list EOF |
| // |
| bool HlslGrammar::acceptCompilationUnit() |
| { |
| if (! acceptDeclarationList(unitNode)) |
| return false; |
| |
| if (! peekTokenClass(EHTokNone)) |
| return false; |
| |
| // set root of AST |
| if (unitNode && !unitNode->getAsAggregate()) |
| unitNode = intermediate.growAggregate(nullptr, unitNode); |
| intermediate.setTreeRoot(unitNode); |
| |
| return true; |
| } |
| |
| // Recognize the following, but with the extra condition that it can be |
| // successfully terminated by EOF or '}'. |
| // |
| // declaration_list |
| // : list of declaration_or_semicolon followed by EOF or RIGHT_BRACE |
| // |
| // declaration_or_semicolon |
| // : declaration |
| // : SEMICOLON |
| // |
| bool HlslGrammar::acceptDeclarationList(TIntermNode*& nodeList) |
| { |
| do { |
| // HLSL allows extra semicolons between global declarations |
| do { } while (acceptTokenClass(EHTokSemicolon)); |
| |
| // EOF or RIGHT_BRACE |
| if (peekTokenClass(EHTokNone) || peekTokenClass(EHTokRightBrace)) |
| return true; |
| |
| // declaration |
| if (! acceptDeclaration(nodeList)) |
| return false; |
| } while (true); |
| |
| return true; |
| } |
| |
| // sampler_state |
| // : LEFT_BRACE [sampler_state_assignment ... ] RIGHT_BRACE |
| // |
| // sampler_state_assignment |
| // : sampler_state_identifier EQUAL value SEMICOLON |
| // |
| // sampler_state_identifier |
| // : ADDRESSU |
| // | ADDRESSV |
| // | ADDRESSW |
| // | BORDERCOLOR |
| // | FILTER |
| // | MAXANISOTROPY |
| // | MAXLOD |
| // | MINLOD |
| // | MIPLODBIAS |
| // |
| bool HlslGrammar::acceptSamplerState() |
| { |
| // TODO: this should be genericized to accept a list of valid tokens and |
| // return token/value pairs. Presently it is specific to texture values. |
| |
| if (! acceptTokenClass(EHTokLeftBrace)) |
| return true; |
| |
| parseContext.warn(token.loc, "unimplemented", "immediate sampler state", ""); |
| |
| do { |
| // read state name |
| HlslToken state; |
| if (! acceptIdentifier(state)) |
| break; // end of list |
| |
| // FXC accepts any case |
| TString stateName = *state.string; |
| std::transform(stateName.begin(), stateName.end(), stateName.begin(), ::tolower); |
| |
| if (! acceptTokenClass(EHTokAssign)) { |
| expected("assign"); |
| return false; |
| } |
| |
| if (stateName == "minlod" || stateName == "maxlod") { |
| if (! peekTokenClass(EHTokIntConstant)) { |
| expected("integer"); |
| return false; |
| } |
| |
| TIntermTyped* lod = nullptr; |
| if (! acceptLiteral(lod)) // should never fail, since we just looked for an integer |
| return false; |
| } else if (stateName == "maxanisotropy") { |
| if (! peekTokenClass(EHTokIntConstant)) { |
| expected("integer"); |
| return false; |
| } |
| |
| TIntermTyped* maxAnisotropy = nullptr; |
| if (! acceptLiteral(maxAnisotropy)) // should never fail, since we just looked for an integer |
| return false; |
| } else if (stateName == "filter") { |
| HlslToken filterMode; |
| if (! acceptIdentifier(filterMode)) { |
| expected("filter mode"); |
| return false; |
| } |
| } else if (stateName == "addressu" || stateName == "addressv" || stateName == "addressw") { |
| HlslToken addrMode; |
| if (! acceptIdentifier(addrMode)) { |
| expected("texture address mode"); |
| return false; |
| } |
| } else if (stateName == "miplodbias") { |
| TIntermTyped* lodBias = nullptr; |
| if (! acceptLiteral(lodBias)) { |
| expected("lod bias"); |
| return false; |
| } |
| } else if (stateName == "bordercolor") { |
| return false; |
| } else { |
| expected("texture state"); |
| return false; |
| } |
| |
| // SEMICOLON |
| if (! acceptTokenClass(EHTokSemicolon)) { |
| expected("semicolon"); |
| return false; |
| } |
| } while (true); |
| |
| if (! acceptTokenClass(EHTokRightBrace)) |
| return false; |
| |
| return true; |
| } |
| |
| // sampler_declaration_dx9 |
| // : SAMPLER identifier EQUAL sampler_type sampler_state |
| // |
| bool HlslGrammar::acceptSamplerDeclarationDX9(TType& /*type*/) |
| { |
| if (! acceptTokenClass(EHTokSampler)) |
| return false; |
| |
| // TODO: remove this when DX9 style declarations are implemented. |
| unimplemented("Direct3D 9 sampler declaration"); |
| |
| // read sampler name |
| HlslToken name; |
| if (! acceptIdentifier(name)) { |
| expected("sampler name"); |
| return false; |
| } |
| |
| if (! acceptTokenClass(EHTokAssign)) { |
| expected("="); |
| return false; |
| } |
| |
| return false; |
| } |
| |
| // declaration |
| // : attributes attributed_declaration |
| // | NAMESPACE IDENTIFIER LEFT_BRACE declaration_list RIGHT_BRACE |
| // |
| // attributed_declaration |
| // : sampler_declaration_dx9 post_decls SEMICOLON |
| // | fully_specified_type // for cbuffer/tbuffer |
| // | fully_specified_type declarator_list SEMICOLON // for non cbuffer/tbuffer |
| // | fully_specified_type identifier function_parameters post_decls compound_statement // function definition |
| // | fully_specified_type identifier sampler_state post_decls compound_statement // sampler definition |
| // | typedef declaration |
| // |
| // declarator_list |
| // : declarator COMMA declarator COMMA declarator... // zero or more declarators |
| // |
| // declarator |
| // : identifier array_specifier post_decls |
| // | identifier array_specifier post_decls EQUAL assignment_expression |
| // | identifier function_parameters post_decls // function prototype |
| // |
| // Parsing has to go pretty far in to know whether it's a variable, prototype, or |
| // function definition, so the implementation below doesn't perfectly divide up the grammar |
| // as above. (The 'identifier' in the first item in init_declarator list is the |
| // same as 'identifier' for function declarations.) |
| // |
| // This can generate more than one subtree, one per initializer or a function body. |
| // All initializer subtrees are put in their own aggregate node, making one top-level |
| // node for all the initializers. Each function created is a top-level node to grow |
| // into the passed-in nodeList. |
| // |
| // If 'nodeList' is passed in as non-null, it must be an aggregate to extend for |
| // each top-level node the declaration creates. Otherwise, if only one top-level |
| // node in generated here, that is want is returned in nodeList. |
| // |
| bool HlslGrammar::acceptDeclaration(TIntermNode*& nodeList) |
| { |
| // NAMESPACE IDENTIFIER LEFT_BRACE declaration_list RIGHT_BRACE |
| if (acceptTokenClass(EHTokNamespace)) { |
| HlslToken namespaceToken; |
| if (!acceptIdentifier(namespaceToken)) { |
| expected("namespace name"); |
| return false; |
| } |
| parseContext.pushNamespace(*namespaceToken.string); |
| if (!acceptTokenClass(EHTokLeftBrace)) { |
| expected("{"); |
| return false; |
| } |
| if (!acceptDeclarationList(nodeList)) { |
| expected("declaration list"); |
| return false; |
| } |
| if (!acceptTokenClass(EHTokRightBrace)) { |
| expected("}"); |
| return false; |
| } |
| parseContext.popNamespace(); |
| return true; |
| } |
| |
| bool declarator_list = false; // true when processing comma separation |
| |
| // attributes |
| TFunctionDeclarator declarator; |
| acceptAttributes(declarator.attributes); |
| |
| // typedef |
| bool typedefDecl = acceptTokenClass(EHTokTypedef); |
| |
| TType declaredType; |
| |
| // DX9 sampler declaration use a different syntax |
| // DX9 shaders need to run through HLSL compiler (fxc) via a back compat mode, it isn't going to |
| // be possible to simultaneously compile D3D10+ style shaders and DX9 shaders. If we want to compile DX9 |
| // HLSL shaders, this will have to be a master level switch |
| // As such, the sampler keyword in D3D10+ turns into an automatic sampler type, and is commonly used |
| // For that reason, this line is commented out |
| // if (acceptSamplerDeclarationDX9(declaredType)) |
| // return true; |
| |
| bool forbidDeclarators = (peekTokenClass(EHTokCBuffer) || peekTokenClass(EHTokTBuffer)); |
| // fully_specified_type |
| if (! acceptFullySpecifiedType(declaredType, nodeList, declarator.attributes, forbidDeclarators)) |
| return false; |
| |
| // cbuffer and tbuffer end with the closing '}'. |
| // No semicolon is included. |
| if (forbidDeclarators) |
| return true; |
| |
| // declarator_list |
| // : declarator |
| // : identifier |
| HlslToken idToken; |
| TIntermAggregate* initializers = nullptr; |
| while (acceptIdentifier(idToken)) { |
| TString *fullName = idToken.string; |
| if (parseContext.symbolTable.atGlobalLevel()) |
| parseContext.getFullNamespaceName(fullName); |
| if (peekTokenClass(EHTokLeftParen)) { |
| // looks like function parameters |
| |
| // merge in the attributes into the return type |
| parseContext.transferTypeAttributes(token.loc, declarator.attributes, declaredType, true); |
| |
| // Potentially rename shader entry point function. No-op most of the time. |
| parseContext.renameShaderFunction(fullName); |
| |
| // function_parameters |
| declarator.function = new TFunction(fullName, declaredType); |
| if (!acceptFunctionParameters(*declarator.function)) { |
| expected("function parameter list"); |
| return false; |
| } |
| |
| // post_decls |
| acceptPostDecls(declarator.function->getWritableType().getQualifier()); |
| |
| // compound_statement (function body definition) or just a prototype? |
| declarator.loc = token.loc; |
| if (peekTokenClass(EHTokLeftBrace)) { |
| if (declarator_list) |
| parseContext.error(idToken.loc, "function body can't be in a declarator list", "{", ""); |
| if (typedefDecl) |
| parseContext.error(idToken.loc, "function body can't be in a typedef", "{", ""); |
| return acceptFunctionDefinition(declarator, nodeList, nullptr); |
| } else { |
| if (typedefDecl) |
| parseContext.error(idToken.loc, "function typedefs not implemented", "{", ""); |
| parseContext.handleFunctionDeclarator(declarator.loc, *declarator.function, true); |
| } |
| } else { |
| // A variable declaration. |
| |
| // merge in the attributes, the first time around, into the shared type |
| if (! declarator_list) |
| parseContext.transferTypeAttributes(token.loc, declarator.attributes, declaredType); |
| |
| // Fix the storage qualifier if it's a global. |
| if (declaredType.getQualifier().storage == EvqTemporary && parseContext.symbolTable.atGlobalLevel()) |
| declaredType.getQualifier().storage = EvqUniform; |
| |
| // recognize array_specifier |
| TArraySizes* arraySizes = nullptr; |
| acceptArraySpecifier(arraySizes); |
| |
| // We can handle multiple variables per type declaration, so |
| // the number of types can expand when arrayness is different. |
| TType variableType; |
| variableType.shallowCopy(declaredType); |
| |
| // In the most general case, arrayness is potentially coming both from the |
| // declared type and from the variable: "int[] a[];" or just one or the other. |
| // Merge it all to the variableType, so all arrayness is part of the variableType. |
| variableType.transferArraySizes(arraySizes); |
| variableType.copyArrayInnerSizes(declaredType.getArraySizes()); |
| |
| // samplers accept immediate sampler state |
| if (variableType.getBasicType() == EbtSampler) { |
| if (! acceptSamplerState()) |
| return false; |
| } |
| |
| // post_decls |
| acceptPostDecls(variableType.getQualifier()); |
| |
| // EQUAL assignment_expression |
| TIntermTyped* expressionNode = nullptr; |
| if (acceptTokenClass(EHTokAssign)) { |
| if (typedefDecl) |
| parseContext.error(idToken.loc, "can't have an initializer", "typedef", ""); |
| if (! acceptAssignmentExpression(expressionNode)) { |
| expected("initializer"); |
| return false; |
| } |
| } |
| |
| // TODO: things scoped within an annotation need their own name space; |
| // TODO: strings are not yet handled. |
| if (variableType.getBasicType() != EbtString && parseContext.getAnnotationNestingLevel() == 0) { |
| if (typedefDecl) |
| parseContext.declareTypedef(idToken.loc, *fullName, variableType); |
| else if (variableType.getBasicType() == EbtBlock) { |
| if (expressionNode) |
| parseContext.error(idToken.loc, "buffer aliasing not yet supported", "block initializer", ""); |
| parseContext.declareBlock(idToken.loc, variableType, fullName); |
| parseContext.declareStructBufferCounter(idToken.loc, variableType, *fullName); |
| } else { |
| if (variableType.getQualifier().storage == EvqUniform && ! variableType.containsOpaque()) { |
| // this isn't really an individual variable, but a member of the $Global buffer |
| parseContext.growGlobalUniformBlock(idToken.loc, variableType, *fullName); |
| } else { |
| // Declare the variable and add any initializer code to the AST. |
| // The top-level node is always made into an aggregate, as that's |
| // historically how the AST has been. |
| initializers = intermediate.growAggregate(initializers, |
| parseContext.declareVariable(idToken.loc, *fullName, variableType, expressionNode), |
| idToken.loc); |
| } |
| } |
| } |
| } |
| |
| // COMMA |
| if (acceptTokenClass(EHTokComma)) |
| declarator_list = true; |
| } |
| |
| // The top-level initializer node is a sequence. |
| if (initializers != nullptr) |
| initializers->setOperator(EOpSequence); |
| |
| // if we have a locally scoped static, it needs a globally scoped initializer |
| if (declaredType.getQualifier().storage == EvqGlobal && !parseContext.symbolTable.atGlobalLevel()) { |
| unitNode = intermediate.growAggregate(unitNode, initializers, idToken.loc); |
| } else { |
| // Add the initializers' aggregate to the nodeList we were handed. |
| if (nodeList) |
| nodeList = intermediate.growAggregate(nodeList, initializers); |
| else |
| nodeList = initializers; |
| } |
| |
| // SEMICOLON |
| if (! acceptTokenClass(EHTokSemicolon)) { |
| // This may have been a false detection of what appeared to be a declaration, but |
| // was actually an assignment such as "float = 4", where "float" is an identifier. |
| // We put the token back to let further parsing happen for cases where that may |
| // happen. This errors on the side of caution, and mostly triggers the error. |
| if (peek() == EHTokAssign || peek() == EHTokLeftBracket || peek() == EHTokDot || peek() == EHTokComma) |
| recedeToken(); |
| else |
| expected(";"); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| // control_declaration |
| // : fully_specified_type identifier EQUAL expression |
| // |
| bool HlslGrammar::acceptControlDeclaration(TIntermNode*& node) |
| { |
| node = nullptr; |
| TAttributes attributes; |
| |
| // fully_specified_type |
| TType type; |
| if (! acceptFullySpecifiedType(type, attributes)) |
| return false; |
| |
| if (attributes.size() > 0) |
| parseContext.warn(token.loc, "attributes don't apply to control declaration", "", ""); |
| |
| // filter out type casts |
| if (peekTokenClass(EHTokLeftParen)) { |
| recedeToken(); |
| return false; |
| } |
| |
| // identifier |
| HlslToken idToken; |
| if (! acceptIdentifier(idToken)) { |
| expected("identifier"); |
| return false; |
| } |
| |
| // EQUAL |
| TIntermTyped* expressionNode = nullptr; |
| if (! acceptTokenClass(EHTokAssign)) { |
| expected("="); |
| return false; |
| } |
| |
| // expression |
| if (! acceptExpression(expressionNode)) { |
| expected("initializer"); |
| return false; |
| } |
| |
| node = parseContext.declareVariable(idToken.loc, *idToken.string, type, expressionNode); |
| |
| return true; |
| } |
| |
| // fully_specified_type |
| // : type_specifier |
| // | type_qualifier type_specifier |
| // |
| bool HlslGrammar::acceptFullySpecifiedType(TType& type, const TAttributes& attributes) |
| { |
| TIntermNode* nodeList = nullptr; |
| return acceptFullySpecifiedType(type, nodeList, attributes); |
| } |
| bool HlslGrammar::acceptFullySpecifiedType(TType& type, TIntermNode*& nodeList, const TAttributes& attributes, bool forbidDeclarators) |
| { |
| // type_qualifier |
| TQualifier qualifier; |
| qualifier.clear(); |
| if (! acceptQualifier(qualifier)) |
| return false; |
| TSourceLoc loc = token.loc; |
| |
| // type_specifier |
| if (! acceptType(type, nodeList)) { |
| // If this is not a type, we may have inadvertently gone down a wrong path |
| // by parsing "sample", which can be treated like either an identifier or a |
| // qualifier. Back it out, if we did. |
| if (qualifier.sample) |
| recedeToken(); |
| |
| return false; |
| } |
| |
| if (type.getBasicType() == EbtBlock) { |
| // the type was a block, which set some parts of the qualifier |
| parseContext.mergeQualifiers(type.getQualifier(), qualifier); |
| |
| // merge in the attributes |
| parseContext.transferTypeAttributes(token.loc, attributes, type); |
| |
| // further, it can create an anonymous instance of the block |
| // (cbuffer and tbuffer don't consume the next identifier, and |
| // should set forbidDeclarators) |
| if (forbidDeclarators || peek() != EHTokIdentifier) |
| parseContext.declareBlock(loc, type); |
| } else { |
| // Some qualifiers are set when parsing the type. Merge those with |
| // whatever comes from acceptQualifier. |
| assert(qualifier.layoutFormat == ElfNone); |
| |
| qualifier.layoutFormat = type.getQualifier().layoutFormat; |
| qualifier.precision = type.getQualifier().precision; |
| |
| if (type.getQualifier().storage == EvqOut || |
| type.getQualifier().storage == EvqBuffer) { |
| qualifier.storage = type.getQualifier().storage; |
| qualifier.readonly = type.getQualifier().readonly; |
| } |
| |
| if (type.isBuiltIn()) |
| qualifier.builtIn = type.getQualifier().builtIn; |
| |
| type.getQualifier() = qualifier; |
| } |
| |
| return true; |
| } |
| |
| // type_qualifier |
| // : qualifier qualifier ... |
| // |
| // Zero or more of these, so this can't return false. |
| // |
| bool HlslGrammar::acceptQualifier(TQualifier& qualifier) |
| { |
| do { |
| switch (peek()) { |
| case EHTokStatic: |
| qualifier.storage = EvqGlobal; |
| break; |
| case EHTokExtern: |
| // TODO: no meaning in glslang? |
| break; |
| case EHTokShared: |
| // TODO: hint |
| break; |
| case EHTokGroupShared: |
| qualifier.storage = EvqShared; |
| break; |
| case EHTokUniform: |
| qualifier.storage = EvqUniform; |
| break; |
| case EHTokConst: |
| qualifier.storage = EvqConst; |
| break; |
| case EHTokVolatile: |
| qualifier.volatil = true; |
| break; |
| case EHTokLinear: |
| qualifier.smooth = true; |
| break; |
| case EHTokCentroid: |
| qualifier.centroid = true; |
| break; |
| case EHTokNointerpolation: |
| qualifier.flat = true; |
| break; |
| case EHTokNoperspective: |
| qualifier.nopersp = true; |
| break; |
| case EHTokSample: |
| qualifier.sample = true; |
| break; |
| case EHTokRowMajor: |
| qualifier.layoutMatrix = ElmColumnMajor; |
| break; |
| case EHTokColumnMajor: |
| qualifier.layoutMatrix = ElmRowMajor; |
| break; |
| case EHTokPrecise: |
| qualifier.noContraction = true; |
| break; |
| case EHTokIn: |
| qualifier.storage = (qualifier.storage == EvqOut) ? EvqInOut : EvqIn; |
| break; |
| case EHTokOut: |
| qualifier.storage = (qualifier.storage == EvqIn) ? EvqInOut : EvqOut; |
| break; |
| case EHTokInOut: |
| qualifier.storage = EvqInOut; |
| break; |
| case EHTokLayout: |
| if (! acceptLayoutQualifierList(qualifier)) |
| return false; |
| continue; |
| case EHTokGloballyCoherent: |
| qualifier.coherent = true; |
| break; |
| case EHTokInline: |
| // TODO: map this to SPIR-V function control |
| break; |
| |
| // GS geometries: these are specified on stage input variables, and are an error (not verified here) |
| // for output variables. |
| case EHTokPoint: |
| qualifier.storage = EvqIn; |
| if (!parseContext.handleInputGeometry(token.loc, ElgPoints)) |
| return false; |
| break; |
| case EHTokLine: |
| qualifier.storage = EvqIn; |
| if (!parseContext.handleInputGeometry(token.loc, ElgLines)) |
| return false; |
| break; |
| case EHTokTriangle: |
| qualifier.storage = EvqIn; |
| if (!parseContext.handleInputGeometry(token.loc, ElgTriangles)) |
| return false; |
| break; |
| case EHTokLineAdj: |
| qualifier.storage = EvqIn; |
| if (!parseContext.handleInputGeometry(token.loc, ElgLinesAdjacency)) |
| return false; |
| break; |
| case EHTokTriangleAdj: |
| qualifier.storage = EvqIn; |
| if (!parseContext.handleInputGeometry(token.loc, ElgTrianglesAdjacency)) |
| return false; |
| break; |
| |
| default: |
| return true; |
| } |
| advanceToken(); |
| } while (true); |
| } |
| |
| // layout_qualifier_list |
| // : LAYOUT LEFT_PAREN layout_qualifier COMMA layout_qualifier ... RIGHT_PAREN |
| // |
| // layout_qualifier |
| // : identifier |
| // | identifier EQUAL expression |
| // |
| // Zero or more of these, so this can't return false. |
| // |
| bool HlslGrammar::acceptLayoutQualifierList(TQualifier& qualifier) |
| { |
| if (! acceptTokenClass(EHTokLayout)) |
| return false; |
| |
| // LEFT_PAREN |
| if (! acceptTokenClass(EHTokLeftParen)) |
| return false; |
| |
| do { |
| // identifier |
| HlslToken idToken; |
| if (! acceptIdentifier(idToken)) |
| break; |
| |
| // EQUAL expression |
| if (acceptTokenClass(EHTokAssign)) { |
| TIntermTyped* expr; |
| if (! acceptConditionalExpression(expr)) { |
| expected("expression"); |
| return false; |
| } |
| parseContext.setLayoutQualifier(idToken.loc, qualifier, *idToken.string, expr); |
| } else |
| parseContext.setLayoutQualifier(idToken.loc, qualifier, *idToken.string); |
| |
| // COMMA |
| if (! acceptTokenClass(EHTokComma)) |
| break; |
| } while (true); |
| |
| // RIGHT_PAREN |
| if (! acceptTokenClass(EHTokRightParen)) { |
| expected(")"); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| // template_type |
| // : FLOAT |
| // | DOUBLE |
| // | INT |
| // | DWORD |
| // | UINT |
| // | BOOL |
| // |
| bool HlslGrammar::acceptTemplateVecMatBasicType(TBasicType& basicType) |
| { |
| switch (peek()) { |
| case EHTokFloat: |
| basicType = EbtFloat; |
| break; |
| case EHTokDouble: |
| basicType = EbtDouble; |
| break; |
| case EHTokInt: |
| case EHTokDword: |
| basicType = EbtInt; |
| break; |
| case EHTokUint: |
| basicType = EbtUint; |
| break; |
| case EHTokBool: |
| basicType = EbtBool; |
| break; |
| default: |
| return false; |
| } |
| |
| advanceToken(); |
| |
| return true; |
| } |
| |
| // vector_template_type |
| // : VECTOR |
| // | VECTOR LEFT_ANGLE template_type COMMA integer_literal RIGHT_ANGLE |
| // |
| bool HlslGrammar::acceptVectorTemplateType(TType& type) |
| { |
| if (! acceptTokenClass(EHTokVector)) |
| return false; |
| |
| if (! acceptTokenClass(EHTokLeftAngle)) { |
| // in HLSL, 'vector' alone means float4. |
| new(&type) TType(EbtFloat, EvqTemporary, 4); |
| return true; |
| } |
| |
| TBasicType basicType; |
| if (! acceptTemplateVecMatBasicType(basicType)) { |
| expected("scalar type"); |
| return false; |
| } |
| |
| // COMMA |
| if (! acceptTokenClass(EHTokComma)) { |
| expected(","); |
| return false; |
| } |
| |
| // integer |
| if (! peekTokenClass(EHTokIntConstant)) { |
| expected("literal integer"); |
| return false; |
| } |
| |
| TIntermTyped* vecSize; |
| if (! acceptLiteral(vecSize)) |
| return false; |
| |
| const int vecSizeI = vecSize->getAsConstantUnion()->getConstArray()[0].getIConst(); |
| |
| new(&type) TType(basicType, EvqTemporary, vecSizeI); |
| |
| if (vecSizeI == 1) |
| type.makeVector(); |
| |
| if (!acceptTokenClass(EHTokRightAngle)) { |
| expected("right angle bracket"); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| // matrix_template_type |
| // : MATRIX |
| // | MATRIX LEFT_ANGLE template_type COMMA integer_literal COMMA integer_literal RIGHT_ANGLE |
| // |
| bool HlslGrammar::acceptMatrixTemplateType(TType& type) |
| { |
| if (! acceptTokenClass(EHTokMatrix)) |
| return false; |
| |
| if (! acceptTokenClass(EHTokLeftAngle)) { |
| // in HLSL, 'matrix' alone means float4x4. |
| new(&type) TType(EbtFloat, EvqTemporary, 0, 4, 4); |
| return true; |
| } |
| |
| TBasicType basicType; |
| if (! acceptTemplateVecMatBasicType(basicType)) { |
| expected("scalar type"); |
| return false; |
| } |
| |
| // COMMA |
| if (! acceptTokenClass(EHTokComma)) { |
| expected(","); |
| return false; |
| } |
| |
| // integer rows |
| if (! peekTokenClass(EHTokIntConstant)) { |
| expected("literal integer"); |
| return false; |
| } |
| |
| TIntermTyped* rows; |
| if (! acceptLiteral(rows)) |
| return false; |
| |
| // COMMA |
| if (! acceptTokenClass(EHTokComma)) { |
| expected(","); |
| return false; |
| } |
| |
| // integer cols |
| if (! peekTokenClass(EHTokIntConstant)) { |
| expected("literal integer"); |
| return false; |
| } |
| |
| TIntermTyped* cols; |
| if (! acceptLiteral(cols)) |
| return false; |
| |
| new(&type) TType(basicType, EvqTemporary, 0, |
| rows->getAsConstantUnion()->getConstArray()[0].getIConst(), |
| cols->getAsConstantUnion()->getConstArray()[0].getIConst()); |
| |
| if (!acceptTokenClass(EHTokRightAngle)) { |
| expected("right angle bracket"); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| // layout_geometry |
| // : LINESTREAM |
| // | POINTSTREAM |
| // | TRIANGLESTREAM |
| // |
| bool HlslGrammar::acceptOutputPrimitiveGeometry(TLayoutGeometry& geometry) |
| { |
| // read geometry type |
| const EHlslTokenClass geometryType = peek(); |
| |
| switch (geometryType) { |
| case EHTokPointStream: geometry = ElgPoints; break; |
| case EHTokLineStream: geometry = ElgLineStrip; break; |
| case EHTokTriangleStream: geometry = ElgTriangleStrip; break; |
| default: |
| return false; // not a layout geometry |
| } |
| |
| advanceToken(); // consume the layout keyword |
| return true; |
| } |
| |
| // tessellation_decl_type |
| // : INPUTPATCH |
| // | OUTPUTPATCH |
| // |
| bool HlslGrammar::acceptTessellationDeclType(TBuiltInVariable& patchType) |
| { |
| // read geometry type |
| const EHlslTokenClass tessType = peek(); |
| |
| switch (tessType) { |
| case EHTokInputPatch: patchType = EbvInputPatch; break; |
| case EHTokOutputPatch: patchType = EbvOutputPatch; break; |
| default: |
| return false; // not a tessellation decl |
| } |
| |
| advanceToken(); // consume the keyword |
| return true; |
| } |
| |
| // tessellation_patch_template_type |
| // : tessellation_decl_type LEFT_ANGLE type comma integer_literal RIGHT_ANGLE |
| // |
| bool HlslGrammar::acceptTessellationPatchTemplateType(TType& type) |
| { |
| TBuiltInVariable patchType; |
| |
| if (! acceptTessellationDeclType(patchType)) |
| return false; |
| |
| if (! acceptTokenClass(EHTokLeftAngle)) |
| return false; |
| |
| if (! acceptType(type)) { |
| expected("tessellation patch type"); |
| return false; |
| } |
| |
| if (! acceptTokenClass(EHTokComma)) |
| return false; |
| |
| // integer size |
| if (! peekTokenClass(EHTokIntConstant)) { |
| expected("literal integer"); |
| return false; |
| } |
| |
| TIntermTyped* size; |
| if (! acceptLiteral(size)) |
| return false; |
| |
| TArraySizes* arraySizes = new TArraySizes; |
| arraySizes->addInnerSize(size->getAsConstantUnion()->getConstArray()[0].getIConst()); |
| type.transferArraySizes(arraySizes); |
| type.getQualifier().builtIn = patchType; |
| |
| if (! acceptTokenClass(EHTokRightAngle)) { |
| expected("right angle bracket"); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| // stream_out_template_type |
| // : output_primitive_geometry_type LEFT_ANGLE type RIGHT_ANGLE |
| // |
| bool HlslGrammar::acceptStreamOutTemplateType(TType& type, TLayoutGeometry& geometry) |
| { |
| geometry = ElgNone; |
| |
| if (! acceptOutputPrimitiveGeometry(geometry)) |
| return false; |
| |
| if (! acceptTokenClass(EHTokLeftAngle)) |
| return false; |
| |
| if (! acceptType(type)) { |
| expected("stream output type"); |
| return false; |
| } |
| |
| type.getQualifier().storage = EvqOut; |
| type.getQualifier().builtIn = EbvGsOutputStream; |
| |
| if (! acceptTokenClass(EHTokRightAngle)) { |
| expected("right angle bracket"); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| // annotations |
| // : LEFT_ANGLE declaration SEMI_COLON ... declaration SEMICOLON RIGHT_ANGLE |
| // |
| bool HlslGrammar::acceptAnnotations(TQualifier&) |
| { |
| if (! acceptTokenClass(EHTokLeftAngle)) |
| return false; |
| |
| // note that we are nesting a name space |
| parseContext.nestAnnotations(); |
| |
| // declaration SEMI_COLON ... declaration SEMICOLON RIGHT_ANGLE |
| do { |
| // eat any extra SEMI_COLON; don't know if the grammar calls for this or not |
| while (acceptTokenClass(EHTokSemicolon)) |
| ; |
| |
| if (acceptTokenClass(EHTokRightAngle)) |
| break; |
| |
| // declaration |
| TIntermNode* node = nullptr; |
| if (! acceptDeclaration(node)) { |
| expected("declaration in annotation"); |
| return false; |
| } |
| } while (true); |
| |
| parseContext.unnestAnnotations(); |
| return true; |
| } |
| |
| // subpass input type |
| // : SUBPASSINPUT |
| // | SUBPASSINPUT VECTOR LEFT_ANGLE template_type RIGHT_ANGLE |
| // | SUBPASSINPUTMS |
| // | SUBPASSINPUTMS VECTOR LEFT_ANGLE template_type RIGHT_ANGLE |
| bool HlslGrammar::acceptSubpassInputType(TType& type) |
| { |
| // read subpass type |
| const EHlslTokenClass subpassInputType = peek(); |
| |
| bool multisample; |
| |
| switch (subpassInputType) { |
| case EHTokSubpassInput: multisample = false; break; |
| case EHTokSubpassInputMS: multisample = true; break; |
| default: |
| return false; // not a subpass input declaration |
| } |
| |
| advanceToken(); // consume the sampler type keyword |
| |
| TType subpassType(EbtFloat, EvqUniform, 4); // default type is float4 |
| |
| if (acceptTokenClass(EHTokLeftAngle)) { |
| if (! acceptType(subpassType)) { |
| expected("scalar or vector type"); |
| return false; |
| } |
| |
| const TBasicType basicRetType = subpassType.getBasicType() ; |
| |
| switch (basicRetType) { |
| case EbtFloat: |
| case EbtUint: |
| case EbtInt: |
| case EbtStruct: |
| break; |
| default: |
| unimplemented("basic type in subpass input"); |
| return false; |
| } |
| |
| if (! acceptTokenClass(EHTokRightAngle)) { |
| expected("right angle bracket"); |
| return false; |
| } |
| } |
| |
| const TBasicType subpassBasicType = subpassType.isStruct() ? (*subpassType.getStruct())[0].type->getBasicType() |
| : subpassType.getBasicType(); |
| |
| TSampler sampler; |
| sampler.setSubpass(subpassBasicType, multisample); |
| |
| // Remember the declared return type. Function returns false on error. |
| if (!parseContext.setTextureReturnType(sampler, subpassType, token.loc)) |
| return false; |
| |
| type.shallowCopy(TType(sampler, EvqUniform)); |
| |
| return true; |
| } |
| |
| // sampler_type for DX9 compatibility |
| // : SAMPLER |
| // | SAMPLER1D |
| // | SAMPLER2D |
| // | SAMPLER3D |
| // | SAMPLERCUBE |
| bool HlslGrammar::acceptSamplerTypeDX9(TType &type) |
| { |
| // read sampler type |
| const EHlslTokenClass samplerType = peek(); |
| |
| TSamplerDim dim = EsdNone; |
| TType txType(EbtFloat, EvqUniform, 4); // default type is float4 |
| |
| bool isShadow = false; |
| |
| switch (samplerType) |
| { |
| case EHTokSampler: dim = Esd2D; break; |
| case EHTokSampler1d: dim = Esd1D; break; |
| case EHTokSampler2d: dim = Esd2D; break; |
| case EHTokSampler3d: dim = Esd3D; break; |
| case EHTokSamplerCube: dim = EsdCube; break; |
| default: |
| return false; // not a dx9 sampler declaration |
| } |
| |
| advanceToken(); // consume the sampler type keyword |
| |
| TArraySizes *arraySizes = nullptr; // TODO: array |
| |
| TSampler sampler; |
| sampler.set(txType.getBasicType(), dim, false, isShadow, false); |
| |
| if (!parseContext.setTextureReturnType(sampler, txType, token.loc)) |
| return false; |
| |
| type.shallowCopy(TType(sampler, EvqUniform, arraySizes)); |
| type.getQualifier().layoutFormat = ElfNone; |
| |
| return true; |
| } |
| |
| // sampler_type |
| // : SAMPLER |
| // | SAMPLER1D |
| // | SAMPLER2D |
| // | SAMPLER3D |
| // | SAMPLERCUBE |
| // | SAMPLERSTATE |
| // | SAMPLERCOMPARISONSTATE |
| bool HlslGrammar::acceptSamplerType(TType& type) |
| { |
| // read sampler type |
| const EHlslTokenClass samplerType = peek(); |
| |
| // TODO: for DX9 |
| // TSamplerDim dim = EsdNone; |
| |
| bool isShadow = false; |
| |
| switch (samplerType) { |
| case EHTokSampler: break; |
| case EHTokSampler1d: /*dim = Esd1D*/; break; |
| case EHTokSampler2d: /*dim = Esd2D*/; break; |
| case EHTokSampler3d: /*dim = Esd3D*/; break; |
| case EHTokSamplerCube: /*dim = EsdCube*/; break; |
| case EHTokSamplerState: break; |
| case EHTokSamplerComparisonState: isShadow = true; break; |
| default: |
| return false; // not a sampler declaration |
| } |
| |
| advanceToken(); // consume the sampler type keyword |
| |
| TArraySizes* arraySizes = nullptr; // TODO: array |
| |
| TSampler sampler; |
| sampler.setPureSampler(isShadow); |
| |
| type.shallowCopy(TType(sampler, EvqUniform, arraySizes)); |
| |
| return true; |
| } |
| |
| // texture_type |
| // | BUFFER |
| // | TEXTURE1D |
| // | TEXTURE1DARRAY |
| // | TEXTURE2D |
| // | TEXTURE2DARRAY |
| // | TEXTURE3D |
| // | TEXTURECUBE |
| // | TEXTURECUBEARRAY |
| // | TEXTURE2DMS |
| // | TEXTURE2DMSARRAY |
| // | RWBUFFER |
| // | RWTEXTURE1D |
| // | RWTEXTURE1DARRAY |
| // | RWTEXTURE2D |
| // | RWTEXTURE2DARRAY |
| // | RWTEXTURE3D |
| |
| bool HlslGrammar::acceptTextureType(TType& type) |
| { |
| const EHlslTokenClass textureType = peek(); |
| |
| TSamplerDim dim = EsdNone; |
| bool array = false; |
| bool ms = false; |
| bool image = false; |
| bool combined = true; |
| |
| switch (textureType) { |
| case EHTokBuffer: dim = EsdBuffer; combined = false; break; |
| case EHTokTexture1d: dim = Esd1D; break; |
| case EHTokTexture1darray: dim = Esd1D; array = true; break; |
| case EHTokTexture2d: dim = Esd2D; break; |
| case EHTokTexture2darray: dim = Esd2D; array = true; break; |
| case EHTokTexture3d: dim = Esd3D; break; |
| case EHTokTextureCube: dim = EsdCube; break; |
| case EHTokTextureCubearray: dim = EsdCube; array = true; break; |
| case EHTokTexture2DMS: dim = Esd2D; ms = true; break; |
| case EHTokTexture2DMSarray: dim = Esd2D; array = true; ms = true; break; |
| case EHTokRWBuffer: dim = EsdBuffer; image=true; break; |
| case EHTokRWTexture1d: dim = Esd1D; array=false; image=true; break; |
| case EHTokRWTexture1darray: dim = Esd1D; array=true; image=true; break; |
| case EHTokRWTexture2d: dim = Esd2D; array=false; image=true; break; |
| case EHTokRWTexture2darray: dim = Esd2D; array=true; image=true; break; |
| case EHTokRWTexture3d: dim = Esd3D; array=false; image=true; break; |
| default: |
| return false; // not a texture declaration |
| } |
| |
| advanceToken(); // consume the texture object keyword |
| |
| TType txType(EbtFloat, EvqUniform, 4); // default type is float4 |
| |
| TIntermTyped* msCount = nullptr; |
| |
| // texture type: required for multisample types and RWBuffer/RWTextures! |
| if (acceptTokenClass(EHTokLeftAngle)) { |
| if (! acceptType(txType)) { |
| expected("scalar or vector type"); |
| return false; |
| } |
| |
| const TBasicType basicRetType = txType.getBasicType() ; |
| |
| switch (basicRetType) { |
| case EbtFloat: |
| case EbtUint: |
| case EbtInt: |
| case EbtStruct: |
| break; |
| default: |
| unimplemented("basic type in texture"); |
| return false; |
| } |
| |
| // Buffers can handle small mats if they fit in 4 components |
| if (dim == EsdBuffer && txType.isMatrix()) { |
| if ((txType.getMatrixCols() * txType.getMatrixRows()) > 4) { |
| expected("components < 4 in matrix buffer type"); |
| return false; |
| } |
| |
| // TODO: except we don't handle it yet... |
| unimplemented("matrix type in buffer"); |
| return false; |
| } |
| |
| if (!txType.isScalar() && !txType.isVector() && !txType.isStruct()) { |
| expected("scalar, vector, or struct type"); |
| return false; |
| } |
| |
| if (ms && acceptTokenClass(EHTokComma)) { |
| // read sample count for multisample types, if given |
| if (! peekTokenClass(EHTokIntConstant)) { |
| expected("multisample count"); |
| return false; |
| } |
| |
| if (! acceptLiteral(msCount)) // should never fail, since we just found an integer |
| return false; |
| } |
| |
| if (! acceptTokenClass(EHTokRightAngle)) { |
| expected("right angle bracket"); |
| return false; |
| } |
| } else if (ms) { |
| expected("texture type for multisample"); |
| return false; |
| } else if (image) { |
| expected("type for RWTexture/RWBuffer"); |
| return false; |
| } |
| |
| TArraySizes* arraySizes = nullptr; |
| const bool shadow = false; // declared on the sampler |
| |
| TSampler sampler; |
| TLayoutFormat format = ElfNone; |
| |
| // Buffer, RWBuffer and RWTexture (images) require a TLayoutFormat. We handle only a limit set. |
| if (image || dim == EsdBuffer) |
| format = parseContext.getLayoutFromTxType(token.loc, txType); |
| |
| const TBasicType txBasicType = txType.isStruct() ? (*txType.getStruct())[0].type->getBasicType() |
| : txType.getBasicType(); |
| |
| // Non-image Buffers are combined |
| if (dim == EsdBuffer && !image) { |
| sampler.set(txType.getBasicType(), dim, array); |
| } else { |
| // DX10 textures are separated. TODO: DX9. |
| if (image) { |
| sampler.setImage(txBasicType, dim, array, shadow, ms); |
| } else { |
| sampler.setTexture(txBasicType, dim, array, shadow, ms); |
| } |
| } |
| |
| // Remember the declared return type. Function returns false on error. |
| if (!parseContext.setTextureReturnType(sampler, txType, token.loc)) |
| return false; |
| |
| // Force uncombined, if necessary |
| if (!combined) |
| sampler.combined = false; |
| |
| type.shallowCopy(TType(sampler, EvqUniform, arraySizes)); |
| type.getQualifier().layoutFormat = format; |
| |
| return true; |
| } |
| |
| // If token is for a type, update 'type' with the type information, |
| // and return true and advance. |
| // Otherwise, return false, and don't advance |
| bool HlslGrammar::acceptType(TType& type) |
| { |
| TIntermNode* nodeList = nullptr; |
| return acceptType(type, nodeList); |
| } |
| bool HlslGrammar::acceptType(TType& type, TIntermNode*& nodeList) |
| { |
| // Basic types for min* types, use native halfs if the option allows them. |
| bool enable16BitTypes = parseContext.hlslEnable16BitTypes(); |
| |
| const TBasicType min16float_bt = enable16BitTypes ? EbtFloat16 : EbtFloat; |
| const TBasicType min10float_bt = enable16BitTypes ? EbtFloat16 : EbtFloat; |
| const TBasicType half_bt = enable16BitTypes ? EbtFloat16 : EbtFloat; |
| const TBasicType min16int_bt = enable16BitTypes ? EbtInt16 : EbtInt; |
| const TBasicType min12int_bt = enable16BitTypes ? EbtInt16 : EbtInt; |
| const TBasicType min16uint_bt = enable16BitTypes ? EbtUint16 : EbtUint; |
| |
| // Some types might have turned into identifiers. Take the hit for checking |
| // when this has happened. |
| if (typeIdentifiers) { |
| const char* identifierString = getTypeString(peek()); |
| if (identifierString != nullptr) { |
| TString name = identifierString; |
| // if it's an identifier, it's not a type |
| if (parseContext.symbolTable.find(name) != nullptr) |
| return false; |
| } |
| } |
| |
| bool isUnorm = false; |
| bool isSnorm = false; |
| |
| // Accept snorm and unorm. Presently, this is ignored, save for an error check below. |
| switch (peek()) { |
| case EHTokUnorm: |
| isUnorm = true; |
| advanceToken(); // eat the token |
| break; |
| case EHTokSNorm: |
| isSnorm = true; |
| advanceToken(); // eat the token |
| break; |
| default: |
| break; |
| } |
| |
| switch (peek()) { |
| case EHTokVector: |
| return acceptVectorTemplateType(type); |
| break; |
| |
| case EHTokMatrix: |
| return acceptMatrixTemplateType(type); |
| break; |
| |
| case EHTokPointStream: // fall through |
| case EHTokLineStream: // ... |
| case EHTokTriangleStream: // ... |
| { |
| TLayoutGeometry geometry; |
| if (! acceptStreamOutTemplateType(type, geometry)) |
| return false; |
| |
| if (! parseContext.handleOutputGeometry(token.loc, geometry)) |
| return false; |
| |
| return true; |
| } |
| |
| case EHTokInputPatch: // fall through |
| case EHTokOutputPatch: // ... |
| { |
| if (! acceptTessellationPatchTemplateType(type)) |
| return false; |
| |
| return true; |
| } |
| |
| case EHTokSampler: // fall through |
| case EHTokSampler1d: // ... |
| case EHTokSampler2d: // ... |
| case EHTokSampler3d: // ... |
| case EHTokSamplerCube: // ... |
| if (parseContext.hlslDX9Compatible()) |
| return acceptSamplerTypeDX9(type); |
| else |
| return acceptSamplerType(type); |
| break; |
| |
| case EHTokSamplerState: // fall through |
| case EHTokSamplerComparisonState: // ... |
| return acceptSamplerType(type); |
| break; |
| |
| case EHTokSubpassInput: // fall through |
| case EHTokSubpassInputMS: // ... |
| return acceptSubpassInputType(type); |
| break; |
| |
| case EHTokBuffer: // fall through |
| case EHTokTexture1d: // ... |
| case EHTokTexture1darray: // ... |
| case EHTokTexture2d: // ... |
| case EHTokTexture2darray: // ... |
| case EHTokTexture3d: // ... |
| case EHTokTextureCube: // ... |
| case EHTokTextureCubearray: // ... |
| case EHTokTexture2DMS: // ... |
| case EHTokTexture2DMSarray: // ... |
| case EHTokRWTexture1d: // ... |
| case EHTokRWTexture1darray: // ... |
| case EHTokRWTexture2d: // ... |
| case EHTokRWTexture2darray: // ... |
| case EHTokRWTexture3d: // ... |
| case EHTokRWBuffer: // ... |
| return acceptTextureType(type); |
| break; |
| |
| case EHTokAppendStructuredBuffer: |
| case EHTokByteAddressBuffer: |
| case EHTokConsumeStructuredBuffer: |
| case EHTokRWByteAddressBuffer: |
| case EHTokRWStructuredBuffer: |
| case EHTokStructuredBuffer: |
| return acceptStructBufferType(type); |
| break; |
| |
| case EHTokTextureBuffer: |
| return acceptTextureBufferType(type); |
| break; |
| |
| case EHTokConstantBuffer: |
| return acceptConstantBufferType(type); |
| |
| case EHTokClass: |
| case EHTokStruct: |
| case EHTokCBuffer: |
| case EHTokTBuffer: |
| return acceptStruct(type, nodeList); |
| |
| case EHTokIdentifier: |
| // An identifier could be for a user-defined type. |
| // Note we cache the symbol table lookup, to save for a later rule |
| // when this is not a type. |
| if (parseContext.lookupUserType(*token.string, type) != nullptr) { |
| advanceToken(); |
| return true; |
| } else |
| return false; |
| |
| case EHTokVoid: |
| new(&type) TType(EbtVoid); |
| break; |
| |
| case EHTokString: |
| new(&type) TType(EbtString); |
| break; |
| |
| case EHTokFloat: |
| new(&type) TType(EbtFloat); |
| break; |
| case EHTokFloat1: |
| new(&type) TType(EbtFloat); |
| type.makeVector(); |
| break; |
| case EHTokFloat2: |
| new(&type) TType(EbtFloat, EvqTemporary, 2); |
| break; |
| case EHTokFloat3: |
| new(&type) TType(EbtFloat, EvqTemporary, 3); |
| break; |
| case EHTokFloat4: |
| new(&type) TType(EbtFloat, EvqTemporary, 4); |
| break; |
| |
| case EHTokDouble: |
| new(&type) TType(EbtDouble); |
| break; |
| case EHTokDouble1: |
| new(&type) TType(EbtDouble); |
| type.makeVector(); |
| break; |
| case EHTokDouble2: |
| new(&type) TType(EbtDouble, EvqTemporary, 2); |
| break; |
| case EHTokDouble3: |
| new(&type) TType(EbtDouble, EvqTemporary, 3); |
| break; |
| case EHTokDouble4: |
| new(&type) TType(EbtDouble, EvqTemporary, 4); |
| break; |
| |
| case EHTokInt: |
| case EHTokDword: |
| new(&type) TType(EbtInt); |
| break; |
| case EHTokInt1: |
| new(&type) TType(EbtInt); |
| type.makeVector(); |
| break; |
| case EHTokInt2: |
| new(&type) TType(EbtInt, EvqTemporary, 2); |
| break; |
| case EHTokInt3: |
| new(&type) TType(EbtInt, EvqTemporary, 3); |
| break; |
| case EHTokInt4: |
| new(&type) TType(EbtInt, EvqTemporary, 4); |
| break; |
| |
| case EHTokUint: |
| new(&type) TType(EbtUint); |
| break; |
| case EHTokUint1: |
| new(&type) TType(EbtUint); |
| type.makeVector(); |
| break; |
| case EHTokUint2: |
| new(&type) TType(EbtUint, EvqTemporary, 2); |
| break; |
| case EHTokUint3: |
| new(&type) TType(EbtUint, EvqTemporary, 3); |
| break; |
| case EHTokUint4: |
| new(&type) TType(EbtUint, EvqTemporary, 4); |
| break; |
| |
| case EHTokUint64: |
| new(&type) TType(EbtUint64); |
| break; |
| |
| case EHTokBool: |
| new(&type) TType(EbtBool); |
| break; |
| case EHTokBool1: |
| new(&type) TType(EbtBool); |
| type.makeVector(); |
| break; |
| case EHTokBool2: |
| new(&type) TType(EbtBool, EvqTemporary, 2); |
| break; |
| case EHTokBool3: |
| new(&type) TType(EbtBool, EvqTemporary, 3); |
| break; |
| case EHTokBool4: |
| new(&type) TType(EbtBool, EvqTemporary, 4); |
| break; |
| |
| case EHTokHalf: |
| new(&type) TType(half_bt, EvqTemporary); |
| break; |
| case EHTokHalf1: |
| new(&type) TType(half_bt, EvqTemporary); |
| type.makeVector(); |
| break; |
| case EHTokHalf2: |
| new(&type) TType(half_bt, EvqTemporary, 2); |
| break; |
| case EHTokHalf3: |
| new(&type) TType(half_bt, EvqTemporary, 3); |
| break; |
| case EHTokHalf4: |
| new(&type) TType(half_bt, EvqTemporary, 4); |
| break; |
| |
| case EHTokMin16float: |
| new(&type) TType(min16float_bt, EvqTemporary, EpqMedium); |
| break; |
| case EHTokMin16float1: |
| new(&type) TType(min16float_bt, EvqTemporary, EpqMedium); |
| type.makeVector(); |
| break; |
| case EHTokMin16float2: |
| new(&type) TType(min16float_bt, EvqTemporary, EpqMedium, 2); |
| break; |
| case EHTokMin16float3: |
| new(&type) TType(min16float_bt, EvqTemporary, EpqMedium, 3); |
| break; |
| case EHTokMin16float4: |
| new(&type) TType(min16float_bt, EvqTemporary, EpqMedium, 4); |
| break; |
| |
| case EHTokMin10float: |
| new(&type) TType(min10float_bt, EvqTemporary, EpqMedium); |
| break; |
| case EHTokMin10float1: |
| new(&type) TType(min10float_bt, EvqTemporary, EpqMedium); |
| type.makeVector(); |
| break; |
| case EHTokMin10float2: |
| new(&type) TType(min10float_bt, EvqTemporary, EpqMedium, 2); |
| break; |
| case EHTokMin10float3: |
| new(&type) TType(min10float_bt, EvqTemporary, EpqMedium, 3); |
| break; |
| case EHTokMin10float4: |
| new(&type) TType(min10float_bt, EvqTemporary, EpqMedium, 4); |
| break; |
| |
| case EHTokMin16int: |
| new(&type) TType(min16int_bt, EvqTemporary, EpqMedium); |
| break; |
| case EHTokMin16int1: |
| new(&type) TType(min16int_bt, EvqTemporary, EpqMedium); |
| type.makeVector(); |
| break; |
| case EHTokMin16int2: |
| new(&type) TType(min16int_bt, EvqTemporary, EpqMedium, 2); |
| break; |
| case EHTokMin16int3: |
| new(&type) TType(min16int_bt, EvqTemporary, EpqMedium, 3); |
| break; |
| case EHTokMin16int4: |
| new(&type) TType(min16int_bt, EvqTemporary, EpqMedium, 4); |
| break; |
| |
| case EHTokMin12int: |
| new(&type) TType(min12int_bt, EvqTemporary, EpqMedium); |
| break; |
| case EHTokMin12int1: |
| new(&type) TType(min12int_bt, EvqTemporary, EpqMedium); |
| type.makeVector(); |
| break; |
| case EHTokMin12int2: |
| new(&type) TType(min12int_bt, EvqTemporary, EpqMedium, 2); |
| break; |
| case EHTokMin12int3: |
| new(&type) TType(min12int_bt, EvqTemporary, EpqMedium, 3); |
| break; |
| case EHTokMin12int4: |
| new(&type) TType(min12int_bt, EvqTemporary, EpqMedium, 4); |
| break; |
| |
| case EHTokMin16uint: |
| new(&type) TType(min16uint_bt, EvqTemporary, EpqMedium); |
| break; |
| case EHTokMin16uint1: |
| new(&type) TType(min16uint_bt, EvqTemporary, EpqMedium); |
| type.makeVector(); |
| break; |
| case EHTokMin16uint2: |
| new(&type) TType(min16uint_bt, EvqTemporary, EpqMedium, 2); |
| break; |
| case EHTokMin16uint3: |
| new(&type) TType(min16uint_bt, EvqTemporary, EpqMedium, 3); |
| break; |
| case EHTokMin16uint4: |
| new(&type) TType(min16uint_bt, EvqTemporary, EpqMedium, 4); |
| break; |
| |
| case EHTokInt1x1: |
| new(&type) TType(EbtInt, EvqTemporary, 0, 1, 1); |
| break; |
| case EHTokInt1x2: |
| new(&type) TType(EbtInt, EvqTemporary, 0, 1, 2); |
| break; |
| case EHTokInt1x3: |
| new(&type) TType(EbtInt, EvqTemporary, 0, 1, 3); |
| break; |
| case EHTokInt1x4: |
| new(&type) TType(EbtInt, EvqTemporary, 0, 1, 4); |
| break; |
| case EHTokInt2x1: |
| new(&type) TType(EbtInt, EvqTemporary, 0, 2, 1); |
| break; |
| case EHTokInt2x2: |
| new(&type) TType(EbtInt, EvqTemporary, 0, 2, 2); |
| break; |
| case EHTokInt2x3: |
| new(&type) TType(EbtInt, EvqTemporary, 0, 2, 3); |
| break; |
| case EHTokInt2x4: |
| new(&type) TType(EbtInt, EvqTemporary, 0, 2, 4); |
| break; |
| case EHTokInt3x1: |
| new(&type) TType(EbtInt, EvqTemporary, 0, 3, 1); |
| break; |
| case EHTokInt3x2: |
| new(&type) TType(EbtInt, EvqTemporary, 0, 3, 2); |
| break; |
| case EHTokInt3x3: |
| new(&type) TType(EbtInt, EvqTemporary, 0, 3, 3); |
| break; |
| case EHTokInt3x4: |
| new(&type) TType(EbtInt, EvqTemporary, 0, 3, 4); |
| break; |
| case EHTokInt4x1: |
| new(&type) TType(EbtInt, EvqTemporary, 0, 4, 1); |
| break; |
| case EHTokInt4x2: |
| new(&type) TType(EbtInt, EvqTemporary, 0, 4, 2); |
| break; |
| case EHTokInt4x3: |
| new(&type) TType(EbtInt, EvqTemporary, 0, 4, 3); |
| break; |
| case EHTokInt4x4: |
| new(&type) TType(EbtInt, EvqTemporary, 0, 4, 4); |
| break; |
| |
| case EHTokUint1x1: |
| new(&type) TType(EbtUint, EvqTemporary, 0, 1, 1); |
| break; |
| case EHTokUint1x2: |
| new(&type) TType(EbtUint, EvqTemporary, 0, 1, 2); |
| break; |
| case EHTokUint1x3: |
| new(&type) TType(EbtUint, EvqTemporary, 0, 1, 3); |
| break; |
| case EHTokUint1x4: |
| new(&type) TType(EbtUint, EvqTemporary, 0, 1, 4); |
| break; |
| case EHTokUint2x1: |
| new(&type) TType(EbtUint, EvqTemporary, 0, 2, 1); |
| break; |
| case EHTokUint2x2: |
| new(&type) TType(EbtUint, EvqTemporary, 0, 2, 2); |
| break; |
| case EHTokUint2x3: |
| new(&type) TType(EbtUint, EvqTemporary, 0, 2, 3); |
| break; |
| case EHTokUint2x4: |
| new(&type) TType(EbtUint, EvqTemporary, 0, 2, 4); |
| break; |
| case EHTokUint3x1: |
| new(&type) TType(EbtUint, EvqTemporary, 0, 3, 1); |
| break; |
| case EHTokUint3x2: |
| new(&type) TType(EbtUint, EvqTemporary, 0, 3, 2); |
| break; |
| case EHTokUint3x3: |
| new(&type) TType(EbtUint, EvqTemporary, 0, 3, 3); |
| break; |
| case EHTokUint3x4: |
| new(&type) TType(EbtUint, EvqTemporary, 0, 3, 4); |
| break; |
| case EHTokUint4x1: |
| new(&type) TType(EbtUint, EvqTemporary, 0, 4, 1); |
| break; |
| case EHTokUint4x2: |
| new(&type) TType(EbtUint, EvqTemporary, 0, 4, 2); |
| break; |
| case EHTokUint4x3: |
| new(&type) TType(EbtUint, EvqTemporary, 0, 4, 3); |
| break; |
| case EHTokUint4x4: |
| new(&type) TType(EbtUint, EvqTemporary, 0, 4, 4); |
| break; |
| |
| case EHTokBool1x1: |
| new(&type) TType(EbtBool, EvqTemporary, 0, 1, 1); |
| break; |
| case EHTokBool1x2: |
| new(&type) TType(EbtBool, EvqTemporary, 0, 1, 2); |
| break; |
| case EHTokBool1x3: |
| new(&type) TType(EbtBool, EvqTemporary, 0, 1, 3); |
| break; |
| case EHTokBool1x4: |
| new(&type) TType(EbtBool, EvqTemporary, 0, 1, 4); |
| break; |
| case EHTokBool2x1: |
| new(&type) TType(EbtBool, EvqTemporary, 0, 2, 1); |
| break; |
| case EHTokBool2x2: |
| new(&type) TType(EbtBool, EvqTemporary, 0, 2, 2); |
| break; |
| case EHTokBool2x3: |
| new(&type) TType(EbtBool, EvqTemporary, 0, 2, 3); |
| break; |
| case EHTokBool2x4: |
| new(&type) TType(EbtBool, EvqTemporary, 0, 2, 4); |
| break; |
| case EHTokBool3x1: |
| new(&type) TType(EbtBool, EvqTemporary, 0, 3, 1); |
| break; |
| case EHTokBool3x2: |
| new(&type) TType(EbtBool, EvqTemporary, 0, 3, 2); |
| break; |
| case EHTokBool3x3: |
| new(&type) TType(EbtBool, EvqTemporary, 0, 3, 3); |
| break; |
| case EHTokBool3x4: |
| new(&type) TType(EbtBool, EvqTemporary, 0, 3, 4); |
| break; |
| case EHTokBool4x1: |
| new(&type) TType(EbtBool, EvqTemporary, 0, 4, 1); |
| break; |
| case EHTokBool4x2: |
| new(&type) TType(EbtBool, EvqTemporary, 0, 4, 2); |
| break; |
| case EHTokBool4x3: |
| new(&type) TType(EbtBool, EvqTemporary, 0, 4, 3); |
| break; |
| case EHTokBool4x4: |
| new(&type) TType(EbtBool, EvqTemporary, 0, 4, 4); |
| break; |
| |
| case EHTokFloat1x1: |
| new(&type) TType(EbtFloat, EvqTemporary, 0, 1, 1); |
| break; |
| case EHTokFloat1x2: |
| new(&type) TType(EbtFloat, EvqTemporary, 0, 1, 2); |
| break; |
| case EHTokFloat1x3: |
| new(&type) TType(EbtFloat, EvqTemporary, 0, 1, 3); |
| break; |
| case EHTokFloat1x4: |
| new(&type) TType(EbtFloat, EvqTemporary, 0, 1, 4); |
| break; |
| case EHTokFloat2x1: |
| new(&type) TType(EbtFloat, EvqTemporary, 0, 2, 1); |
| break; |
| case EHTokFloat2x2: |
| new(&type) TType(EbtFloat, EvqTemporary, 0, 2, 2); |
| break; |
| case EHTokFloat2x3: |
| new(&type) TType(EbtFloat, EvqTemporary, 0, 2, 3); |
| break; |
| case EHTokFloat2x4: |
| new(&type) TType(EbtFloat, EvqTemporary, 0, 2, 4); |
| break; |
| case EHTokFloat3x1: |
| new(&type) TType(EbtFloat, EvqTemporary, 0, 3, 1); |
| break; |
| case EHTokFloat3x2: |
| new(&type) TType(EbtFloat, EvqTemporary, 0, 3, 2); |
| break; |
| case EHTokFloat3x3: |
| new(&type) TType(EbtFloat, EvqTemporary, 0, 3, 3); |
| break; |
| case EHTokFloat3x4: |
| new(&type) TType(EbtFloat, EvqTemporary, 0, 3, 4); |
| break; |
| case EHTokFloat4x1: |
| new(&type) TType(EbtFloat, EvqTemporary, 0, 4, 1); |
| break; |
| case EHTokFloat4x2: |
| new(&type) TType(EbtFloat, EvqTemporary, 0, 4, 2); |
| break; |
| case EHTokFloat4x3: |
| new(&type) TType(EbtFloat, EvqTemporary, 0, 4, 3); |
| break; |
| case EHTokFloat4x4: |
| new(&type) TType(EbtFloat, EvqTemporary, 0, 4, 4); |
| break; |
| |
| case EHTokHalf1x1: |
| new(&type) TType(half_bt, EvqTemporary, 0, 1, 1); |
| break; |
| case EHTokHalf1x2: |
| new(&type) TType(half_bt, EvqTemporary, 0, 1, 2); |
| break; |
| case EHTokHalf1x3: |
| new(&type) TType(half_bt, EvqTemporary, 0, 1, 3); |
| break; |
| case EHTokHalf1x4: |
| new(&type) TType(half_bt, EvqTemporary, 0, 1, 4); |
| break; |
| case EHTokHalf2x1: |
| new(&type) TType(half_bt, EvqTemporary, 0, 2, 1); |
| break; |
| case EHTokHalf2x2: |
| new(&type) TType(half_bt, EvqTemporary, 0, 2, 2); |
| break; |
| case EHTokHalf2x3: |
| new(&type) TType(half_bt, EvqTemporary, 0, 2, 3); |
| break; |
| case EHTokHalf2x4: |
| new(&type) TType(half_bt, EvqTemporary, 0, 2, 4); |
| break; |
| case EHTokHalf3x1: |
| new(&type) TType(half_bt, EvqTemporary, 0, 3, 1); |
| break; |
| case EHTokHalf3x2: |
| new(&type) TType(half_bt, EvqTemporary, 0, 3, 2); |
| break; |
| case EHTokHalf3x3: |
| new(&type) TType(half_bt, EvqTemporary, 0, 3, 3); |
| break; |
| case EHTokHalf3x4: |
| new(&type) TType(half_bt, EvqTemporary, 0, 3, 4); |
| break; |
| case EHTokHalf4x1: |
| new(&type) TType(half_bt, EvqTemporary, 0, 4, 1); |
| break; |
| case EHTokHalf4x2: |
| new(&type) TType(half_bt, EvqTemporary, 0, 4, 2); |
| break; |
| case EHTokHalf4x3: |
| new(&type) TType(half_bt, EvqTemporary, 0, 4, 3); |
| break; |
| case EHTokHalf4x4: |
| new(&type) TType(half_bt, EvqTemporary, 0, 4, 4); |
| break; |
| |
| case EHTokDouble1x1: |
| new(&type) TType(EbtDouble, EvqTemporary, 0, 1, 1); |
| break; |
| case EHTokDouble1x2: |
| new(&type) TType(EbtDouble, EvqTemporary, 0, 1, 2); |
| break; |
| case EHTokDouble1x3: |
| new(&type) TType(EbtDouble, EvqTemporary, 0, 1, 3); |
| break; |
| case EHTokDouble1x4: |
| new(&type) TType(EbtDouble, EvqTemporary, 0, 1, 4); |
| break; |
| case EHTokDouble2x1: |
| new(&type) TType(EbtDouble, EvqTemporary, 0, 2, 1); |
| break; |
| case EHTokDouble2x2: |
| new(&type) TType(EbtDouble, EvqTemporary, 0, 2, 2); |
| break; |
| case EHTokDouble2x3: |
| new(&type) TType(EbtDouble, EvqTemporary, 0, 2, 3); |
| break; |
| case EHTokDouble2x4: |
| new(&type) TType(EbtDouble, EvqTemporary, 0, 2, 4); |
| break; |
| case EHTokDouble3x1: |
| new(&type) TType(EbtDouble, EvqTemporary, 0, 3, 1); |
| break; |
| case EHTokDouble3x2: |
| new(&type) TType(EbtDouble, EvqTemporary, 0, 3, 2); |
| break; |
| case EHTokDouble3x3: |
| new(&type) TType(EbtDouble, EvqTemporary, 0, 3, 3); |
| break; |
| case EHTokDouble3x4: |
| new(&type) TType(EbtDouble, EvqTemporary, 0, 3, 4); |
| break; |
| case EHTokDouble4x1: |
| new(&type) TType(EbtDouble, EvqTemporary, 0, 4, 1); |
| break; |
| case EHTokDouble4x2: |
| new(&type) TType(EbtDouble, EvqTemporary, 0, 4, 2); |
| break; |
| case EHTokDouble4x3: |
| new(&type) TType(EbtDouble, EvqTemporary, 0, 4, 3); |
| break; |
| case EHTokDouble4x4: |
| new(&type) TType(EbtDouble, EvqTemporary, 0, 4, 4); |
| break; |
| |
| default: |
| return false; |
| } |
| |
| advanceToken(); |
| |
| if ((isUnorm || isSnorm) && !type.isFloatingDomain()) { |
| parseContext.error(token.loc, "unorm and snorm only valid in floating point domain", "", ""); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| // struct |
| // : struct_type IDENTIFIER post_decls LEFT_BRACE struct_declaration_list RIGHT_BRACE |
| // | struct_type post_decls LEFT_BRACE struct_declaration_list RIGHT_BRACE |
| // | struct_type IDENTIFIER // use of previously declared struct type |
| // |
| // struct_type |
| // : STRUCT |
| // | CLASS |
| // | CBUFFER |
| // | TBUFFER |
| // |
| bool HlslGrammar::acceptStruct(TType& type, TIntermNode*& nodeList) |
| { |
| // This storage qualifier will tell us whether it's an AST |
| // block type or just a generic structure type. |
| TStorageQualifier storageQualifier = EvqTemporary; |
| bool readonly = false; |
| |
| if (acceptTokenClass(EHTokCBuffer)) { |
| // CBUFFER |
| storageQualifier = EvqUniform; |
| } else if (acceptTokenClass(EHTokTBuffer)) { |
| // TBUFFER |
| storageQualifier = EvqBuffer; |
| readonly = true; |
| } else if (! acceptTokenClass(EHTokClass) && ! acceptTokenClass(EHTokStruct)) { |
| // Neither CLASS nor STRUCT |
| return false; |
| } |
| |
| // Now known to be one of CBUFFER, TBUFFER, CLASS, or STRUCT |
| |
| |
| // IDENTIFIER. It might also be a keyword which can double as an identifier. |
| // For example: 'cbuffer ConstantBuffer' or 'struct ConstantBuffer' is legal. |
| // 'cbuffer int' is also legal, and 'struct int' appears rejected only because |
| // it attempts to redefine the 'int' type. |
| const char* idString = getTypeString(peek()); |
| TString structName = ""; |
| if (peekTokenClass(EHTokIdentifier) || idString != nullptr) { |
| if (idString != nullptr) |
| structName = *idString; |
| else |
| structName = *token.string; |
| advanceToken(); |
| } |
| |
| // post_decls |
| TQualifier postDeclQualifier; |
| postDeclQualifier.clear(); |
| bool postDeclsFound = acceptPostDecls(postDeclQualifier); |
| |
| // LEFT_BRACE, or |
| // struct_type IDENTIFIER |
| if (! acceptTokenClass(EHTokLeftBrace)) { |
| if (structName.size() > 0 && !postDeclsFound && parseContext.lookupUserType(structName, type) != nullptr) { |
| // struct_type IDENTIFIER |
| return true; |
| } else { |
| expected("{"); |
| return false; |
| } |
| } |
| |
| |
| // struct_declaration_list |
| TTypeList* typeList; |
| // Save each member function so they can be processed after we have a fully formed 'this'. |
| TVector<TFunctionDeclarator> functionDeclarators; |
| |
| parseContext.pushNamespace(structName); |
| bool acceptedList = acceptStructDeclarationList(typeList, nodeList, functionDeclarators); |
| parseContext.popNamespace(); |
| |
| if (! acceptedList) { |
| expected("struct member declarations"); |
| return false; |
| } |
| |
| // RIGHT_BRACE |
| if (! acceptTokenClass(EHTokRightBrace)) { |
| expected("}"); |
| return false; |
| } |
| |
| // create the user-defined type |
| if (storageQualifier == EvqTemporary) |
| new(&type) TType(typeList, structName); |
| else { |
| postDeclQualifier.storage = storageQualifier; |
| postDeclQualifier.readonly = readonly; |
| new(&type) TType(typeList, structName, postDeclQualifier); // sets EbtBlock |
| } |
| |
| parseContext.declareStruct(token.loc, structName, type); |
| |
| // For member functions: now that we know the type of 'this', go back and |
| // - add their implicit argument with 'this' (not to the mangling, just the argument list) |
| // - parse the functions, their tokens were saved for deferred parsing (now) |
| for (int b = 0; b < (int)functionDeclarators.size(); ++b) { |
| // update signature |
| if (functionDeclarators[b].function->hasImplicitThis()) |
| functionDeclarators[b].function->addThisParameter(type, intermediate.implicitThisName); |
| } |
| |
| // All member functions get parsed inside the class/struct namespace and with the |
| // class/struct members in a symbol-table level. |
| parseContext.pushNamespace(structName); |
| parseContext.pushThisScope(type, functionDeclarators); |
| bool deferredSuccess = true; |
| for (int b = 0; b < (int)functionDeclarators.size() && deferredSuccess; ++b) { |
| // parse body |
| pushTokenStream(functionDeclarators[b].body); |
| if (! acceptFunctionBody(functionDeclarators[b], nodeList)) |
| deferredSuccess = false; |
| popTokenStream(); |
| } |
| parseContext.popThisScope(); |
| parseContext.popNamespace(); |
| |
| return deferredSuccess; |
| } |
| |
| // constantbuffer |
| // : CONSTANTBUFFER LEFT_ANGLE type RIGHT_ANGLE |
| bool HlslGrammar::acceptConstantBufferType(TType& type) |
| { |
| if (! acceptTokenClass(EHTokConstantBuffer)) |
| return false; |
| |
| if (! acceptTokenClass(EHTokLeftAngle)) { |
| expected("left angle bracket"); |
| return false; |
| } |
| |
| TType templateType; |
| if (! acceptType(templateType)) { |
| expected("type"); |
| return false; |
| } |
| |
| if (! acceptTokenClass(EHTokRightAngle)) { |
| expected("right angle bracket"); |
| return false; |
| } |
| |
| TQualifier postDeclQualifier; |
| postDeclQualifier.clear(); |
| postDeclQualifier.storage = EvqUniform; |
| |
| if (templateType.isStruct()) { |
| // Make a block from the type parsed as the template argument |
| TTypeList* typeList = templateType.getWritableStruct(); |
| new(&type) TType(typeList, "", postDeclQualifier); // sets EbtBlock |
| |
| type.getQualifier().storage = EvqUniform; |
| |
| return true; |
| } else { |
| parseContext.error(token.loc, "non-structure type in ConstantBuffer", "", ""); |
| return false; |
| } |
| } |
| |
| // texture_buffer |
| // : TEXTUREBUFFER LEFT_ANGLE type RIGHT_ANGLE |
| bool HlslGrammar::acceptTextureBufferType(TType& type) |
| { |
| if (! acceptTokenClass(EHTokTextureBuffer)) |
| return false; |
| |
| if (! acceptTokenClass(EHTokLeftAngle)) { |
| expected("left angle bracket"); |
| return false; |
| } |
| |
| TType templateType; |
| if (! acceptType(templateType)) { |
| expected("type"); |
| return false; |
| } |
| |
| if (! acceptTokenClass(EHTokRightAngle)) { |
| expected("right angle bracket"); |
| return false; |
| } |
| |
| templateType.getQualifier().storage = EvqBuffer; |
| templateType.getQualifier().readonly = true; |
| |
| TType blockType(templateType.getWritableStruct(), "", templateType.getQualifier()); |
| |
| blockType.getQualifier().storage = EvqBuffer; |
| blockType.getQualifier().readonly = true; |
| |
| type.shallowCopy(blockType); |
| |
| return true; |
| } |
| |
| |
| // struct_buffer |
| // : APPENDSTRUCTUREDBUFFER |
| // | BYTEADDRESSBUFFER |
| // | CONSUMESTRUCTUREDBUFFER |
| // | RWBYTEADDRESSBUFFER |
| // | RWSTRUCTUREDBUFFER |
| // | STRUCTUREDBUFFER |
| bool HlslGrammar::acceptStructBufferType(TType& type) |
| { |
| const EHlslTokenClass structBuffType = peek(); |
| |
| // TODO: globallycoherent |
| bool hasTemplateType = true; |
| bool readonly = false; |
| |
| TStorageQualifier storage = EvqBuffer; |
| TBuiltInVariable builtinType = EbvNone; |
| |
| switch (structBuffType) { |
| case EHTokAppendStructuredBuffer: |
| builtinType = EbvAppendConsume; |
| break; |
| case EHTokByteAddressBuffer: |
| hasTemplateType = false; |
| readonly = true; |
| builtinType = EbvByteAddressBuffer; |
| break; |
| case EHTokConsumeStructuredBuffer: |
| builtinType = EbvAppendConsume; |
| break; |
| case EHTokRWByteAddressBuffer: |
| hasTemplateType = false; |
| builtinType = EbvRWByteAddressBuffer; |
| break; |
| case EHTokRWStructuredBuffer: |
| builtinType = EbvRWStructuredBuffer; |
| break; |
| case EHTokStructuredBuffer: |
| builtinType = EbvStructuredBuffer; |
| readonly = true; |
| break; |
| default: |
| return false; // not a structure buffer type |
| } |
| |
| advanceToken(); // consume the structure keyword |
| |
| // type on which this StructedBuffer is templatized. E.g, StructedBuffer<MyStruct> ==> MyStruct |
| TType* templateType = new TType; |
| |
| if (hasTemplateType) { |
| if (! acceptTokenClass(EHTokLeftAngle)) { |
| expected("left angle bracket"); |
| return false; |
| } |
| |
| if (! acceptType(*templateType)) { |
| expected("type"); |
| return false; |
| } |
| if (! acceptTokenClass(EHTokRightAngle)) { |
| expected("right angle bracket"); |
| return false; |
| } |
| } else { |
| // byte address buffers have no explicit type. |
| TType uintType(EbtUint, storage); |
| templateType->shallowCopy(uintType); |
| } |
| |
| // Create an unsized array out of that type. |
| // TODO: does this work if it's already an array type? |
| TArraySizes* unsizedArray = new TArraySizes; |
| unsizedArray->addInnerSize(UnsizedArraySize); |
| templateType->transferArraySizes(unsizedArray); |
| templateType->getQualifier().storage = storage; |
| |
| // field name is canonical for all structbuffers |
| templateType->setFieldName("@data"); |
| |
| TTypeList* blockStruct = new TTypeList; |
| TTypeLoc member = { templateType, token.loc }; |
| blockStruct->push_back(member); |
| |
| // This is the type of the buffer block (SSBO) |
| TType blockType(blockStruct, "", templateType->getQualifier()); |
| |
| blockType.getQualifier().storage = storage; |
| blockType.getQualifier().readonly = readonly; |
| blockType.getQualifier().builtIn = builtinType; |
| |
| // We may have created an equivalent type before, in which case we should use its |
| // deep structure. |
| parseContext.shareStructBufferType(blockType); |
| |
| type.shallowCopy(blockType); |
| |
| return true; |
| } |
| |
| // struct_declaration_list |
| // : struct_declaration SEMI_COLON struct_declaration SEMI_COLON ... |
| // |
| // struct_declaration |
| // : attributes fully_specified_type struct_declarator COMMA struct_declarator ... |
| // | attributes fully_specified_type IDENTIFIER function_parameters post_decls compound_statement // member-function definition |
| // |
| // struct_declarator |
| // : IDENTIFIER post_decls |
| // | IDENTIFIER array_specifier post_decls |
| // | IDENTIFIER function_parameters post_decls // member-function prototype |
| // |
| bool HlslGrammar::acceptStructDeclarationList(TTypeList*& typeList, TIntermNode*& nodeList, |
| TVector<TFunctionDeclarator>& declarators) |
| { |
| typeList = new TTypeList(); |
| HlslToken idToken; |
| |
| do { |
| // success on seeing the RIGHT_BRACE coming up |
| if (peekTokenClass(EHTokRightBrace)) |
| break; |
| |
| // struct_declaration |
| |
| // attributes |
| TAttributes attributes; |
| acceptAttributes(attributes); |
| |
| bool declarator_list = false; |
| |
| // fully_specified_type |
| TType memberType; |
| if (! acceptFullySpecifiedType(memberType, nodeList, attributes)) { |
| expected("member type"); |
| return false; |
| } |
| |
| // merge in the attributes |
| parseContext.transferTypeAttributes(token.loc, attributes, memberType); |
| |
| // struct_declarator COMMA struct_declarator ... |
| bool functionDefinitionAccepted = false; |
| do { |
| if (! acceptIdentifier(idToken)) { |
| expected("member name"); |
| return false; |
| } |
| |
| if (peekTokenClass(EHTokLeftParen)) { |
| // function_parameters |
| if (!declarator_list) { |
| declarators.resize(declarators.size() + 1); |
| // request a token stream for deferred processing |
| functionDefinitionAccepted = acceptMemberFunctionDefinition(nodeList, memberType, *idToken.string, |
| declarators.back()); |
| if (functionDefinitionAccepted) |
| break; |
| } |
| expected("member-function definition"); |
| return false; |
| } else { |
| // add it to the list of members |
| TTypeLoc member = { new TType(EbtVoid), token.loc }; |
| member.type->shallowCopy(memberType); |
| member.type->setFieldName(*idToken.string); |
| typeList->push_back(member); |
| |
| // array_specifier |
| TArraySizes* arraySizes = nullptr; |
| acceptArraySpecifier(arraySizes); |
| if (arraySizes) |
| typeList->back().type->transferArraySizes(arraySizes); |
| |
| acceptPostDecls(member.type->getQualifier()); |
| |
| // EQUAL assignment_expression |
| if (acceptTokenClass(EHTokAssign)) { |
| parseContext.warn(idToken.loc, "struct-member initializers ignored", "typedef", ""); |
| TIntermTyped* expressionNode = nullptr; |
| if (! acceptAssignmentExpression(expressionNode)) { |
| expected("initializer"); |
| return false; |
| } |
| } |
| } |
| // success on seeing the SEMICOLON coming up |
| if (peekTokenClass(EHTokSemicolon)) |
| break; |
| |
| // COMMA |
| if (acceptTokenClass(EHTokComma)) |
| declarator_list = true; |
| else { |
| expected(","); |
| return false; |
| } |
| |
| } while (true); |
| |
| // SEMI_COLON |
| if (! functionDefinitionAccepted && ! acceptTokenClass(EHTokSemicolon)) { |
| expected(";"); |
| return false; |
| } |
| |
| } while (true); |
| |
| return true; |
| } |
| |
| // member_function_definition |
| // | function_parameters post_decls compound_statement |
| // |
| // Expects type to have EvqGlobal for a static member and |
| // EvqTemporary for non-static member. |
| bool HlslGrammar::acceptMemberFunctionDefinition(TIntermNode*& nodeList, const TType& type, TString& memberName, |
| TFunctionDeclarator& declarator) |
| { |
| bool accepted = false; |
| |
| TString* functionName = &memberName; |
| parseContext.getFullNamespaceName(functionName); |
| declarator.function = new TFunction(functionName, type); |
| if (type.getQualifier().storage == EvqTemporary) |
| declarator.function->setImplicitThis(); |
| else |
| declarator.function->setIllegalImplicitThis(); |
| |
| // function_parameters |
| if (acceptFunctionParameters(*declarator.function)) { |
| // post_decls |
| acceptPostDecls(declarator.function->getWritableType().getQualifier()); |
| |
| // compound_statement (function body definition) |
| if (peekTokenClass(EHTokLeftBrace)) { |
| declarator.loc = token.loc; |
| declarator.body = new TVector<HlslToken>; |
| accepted = acceptFunctionDefinition(declarator, nodeList, declarator.body); |
| } |
| } else |
| expected("function parameter list"); |
| |
| return accepted; |
| } |
| |
| // function_parameters |
| // : LEFT_PAREN parameter_declaration COMMA parameter_declaration ... RIGHT_PAREN |
| // | LEFT_PAREN VOID RIGHT_PAREN |
| // |
| bool HlslGrammar::acceptFunctionParameters(TFunction& function) |
| { |
| // LEFT_PAREN |
| if (! acceptTokenClass(EHTokLeftParen)) |
| return false; |
| |
| // VOID RIGHT_PAREN |
| if (! acceptTokenClass(EHTokVoid)) { |
| do { |
| // parameter_declaration |
| if (! acceptParameterDeclaration(function)) |
| break; |
| |
| // COMMA |
| if (! acceptTokenClass(EHTokComma)) |
| break; |
| } while (true); |
| } |
| |
| // RIGHT_PAREN |
| if (! acceptTokenClass(EHTokRightParen)) { |
| expected(")"); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| // default_parameter_declaration |
| // : EQUAL conditional_expression |
| // : EQUAL initializer |
| bool HlslGrammar::acceptDefaultParameterDeclaration(const TType& type, TIntermTyped*& node) |
| { |
| node = nullptr; |
| |
| // Valid not to have a default_parameter_declaration |
| if (!acceptTokenClass(EHTokAssign)) |
| return true; |
| |
| if (!acceptConditionalExpression(node)) { |
| if (!acceptInitializer(node)) |
| return false; |
| |
| // For initializer lists, we have to const-fold into a constructor for the type, so build |
| // that. |
| TFunction* constructor = parseContext.makeConstructorCall(token.loc, type); |
| if (constructor == nullptr) // cannot construct |
| return false; |
| |
| TIntermTyped* arguments = nullptr; |
| for (int i = 0; i < int(node->getAsAggregate()->getSequence().size()); i++) |
| parseContext.handleFunctionArgument(constructor, arguments, node->getAsAggregate()->getSequence()[i]->getAsTyped()); |
| |
| node = parseContext.handleFunctionCall(token.loc, constructor, node); |
| } |
| |
| if (node == nullptr) |
| return false; |
| |
| // If this is simply a constant, we can use it directly. |
| if (node->getAsConstantUnion()) |
| return true; |
| |
| // Otherwise, it has to be const-foldable. |
| TIntermTyped* origNode = node; |
| |
| node = intermediate.fold(node->getAsAggregate()); |
| |
| if (node != nullptr && origNode != node) |
| return true; |
| |
| parseContext.error(token.loc, "invalid default parameter value", "", ""); |
| |
| return false; |
| } |
| |
| // parameter_declaration |
| // : attributes attributed_declaration |
| // |
| // attributed_declaration |
| // : fully_specified_type post_decls [ = default_parameter_declaration ] |
| // | fully_specified_type identifier array_specifier post_decls [ = default_parameter_declaration ] |
| // |
| bool HlslGrammar::acceptParameterDeclaration(TFunction& function) |
| { |
| // attributes |
| TAttributes attributes; |
| acceptAttributes(attributes); |
| |
| // fully_specified_type |
| TType* type = new TType; |
| if (! acceptFullySpecifiedType(*type, attributes)) |
| return false; |
| |
| // merge in the attributes |
| parseContext.transferTypeAttributes(token.loc, attributes, *type); |
| |
| // identifier |
| HlslToken idToken; |
| acceptIdentifier(idToken); |
| |
| // array_specifier |
| TArraySizes* arraySizes = nullptr; |
| acceptArraySpecifier(arraySizes); |
| if (arraySizes) { |
| if (arraySizes->hasUnsized()) { |
| parseContext.error(token.loc, "function parameter requires array size", "[]", ""); |
| return false; |
| } |
| |
| type->transferArraySizes(arraySizes); |
| } |
| |
| // post_decls |
| acceptPostDecls(type->getQualifier()); |
| |
| TIntermTyped* defaultValue; |
| if (!acceptDefaultParameterDeclaration(*type, defaultValue)) |
| return false; |
| |
| parseContext.paramFix(*type); |
| |
| // If any prior parameters have default values, all the parameters after that must as well. |
| if (defaultValue == nullptr && function.getDefaultParamCount() > 0) { |
| parseContext.error(idToken.loc, "invalid parameter after default value parameters", idToken.string->c_str(), ""); |
| return false; |
| } |
| |
| TParameter param = { idToken.string, type, defaultValue }; |
| function.addParameter(param); |
| |
| return true; |
| } |
| |
| // Do the work to create the function definition in addition to |
| // parsing the body (compound_statement). |
| // |
| // If 'deferredTokens' are passed in, just get the token stream, |
| // don't process. |
| // |
| bool HlslGrammar::acceptFunctionDefinition(TFunctionDeclarator& declarator, TIntermNode*& nodeList, |
| TVector<HlslToken>* deferredTokens) |
| { |
| parseContext.handleFunctionDeclarator(declarator.loc, *declarator.function, false /* not prototype */); |
| |
| if (deferredTokens) |
| return captureBlockTokens(*deferredTokens); |
| else |
| return acceptFunctionBody(declarator, nodeList); |
| } |
| |
| bool HlslGrammar::acceptFunctionBody(TFunctionDeclarator& declarator, TIntermNode*& nodeList) |
| { |
| // we might get back an entry-point |
| TIntermNode* entryPointNode = nullptr; |
| |
| // This does a pushScope() |
| TIntermNode* functionNode = parseContext.handleFunctionDefinition(declarator.loc, *declarator.function, |
| declarator.attributes, entryPointNode); |
| |
| // compound_statement |
| TIntermNode* functionBody = nullptr; |
| if (! acceptCompoundStatement(functionBody)) |
| return false; |
| |
| // this does a popScope() |
| parseContext.handleFunctionBody(declarator.loc, *declarator.function, functionBody, functionNode); |
| |
| // Hook up the 1 or 2 function definitions. |
| nodeList = intermediate.growAggregate(nodeList, functionNode); |
| nodeList = intermediate.growAggregate(nodeList, entryPointNode); |
| |
| return true; |
| } |
| |
| // Accept an expression with parenthesis around it, where |
| // the parenthesis ARE NOT expression parenthesis, but the |
| // syntactically required ones like in "if ( expression )". |
| // |
| // Also accepts a declaration expression; "if (int a = expression)". |
| // |
| // Note this one is not set up to be speculative; as it gives |
| // errors if not found. |
| // |
| bool HlslGrammar::acceptParenExpression(TIntermTyped*& expression) |
| { |
| expression = nullptr; |
| |
| // LEFT_PAREN |
| if (! acceptTokenClass(EHTokLeftParen)) |
| expected("("); |
| |
| bool decl = false; |
| TIntermNode* declNode = nullptr; |
| decl = acceptControlDeclaration(declNode); |
| if (decl) { |
| if (declNode == nullptr || declNode->getAsTyped() == nullptr) { |
| expected("initialized declaration"); |
| return false; |
| } else |
| expression = declNode->getAsTyped(); |
| } else { |
| // no declaration |
| if (! acceptExpression(expression)) { |
| expected("expression"); |
| return false; |
| } |
| } |
| |
| // RIGHT_PAREN |
| if (! acceptTokenClass(EHTokRightParen)) |
| expected(")"); |
| |
| return true; |
| } |
| |
| // The top-level full expression recognizer. |
| // |
| // expression |
| // : assignment_expression COMMA assignment_expression COMMA assignment_expression ... |
| // |
| bool HlslGrammar::acceptExpression(TIntermTyped*& node) |
| { |
| node = nullptr; |
| |
| // assignment_expression |
| if (! acceptAssignmentExpression(node)) |
| return false; |
| |
| if (! peekTokenClass(EHTokComma)) |
| return true; |
| |
| do { |
| // ... COMMA |
| TSourceLoc loc = token.loc; |
| advanceToken(); |
| |
| // ... assignment_expression |
| TIntermTyped* rightNode = nullptr; |
| if (! acceptAssignmentExpression(rightNode)) { |
| expected("assignment expression"); |
| return false; |
| } |
| |
| node = intermediate.addComma(node, rightNode, loc); |
| |
| if (! peekTokenClass(EHTokComma)) |
| return true; |
| } while (true); |
| } |
| |
| // initializer |
| // : LEFT_BRACE RIGHT_BRACE |
| // | LEFT_BRACE initializer_list RIGHT_BRACE |
| // |
| // initializer_list |
| // : assignment_expression COMMA assignment_expression COMMA ... |
| // |
| bool HlslGrammar::acceptInitializer(TIntermTyped*& node) |
| { |
| // LEFT_BRACE |
| if (! acceptTokenClass(EHTokLeftBrace)) |
| return false; |
| |
| // RIGHT_BRACE |
| TSourceLoc loc = token.loc; |
| if (acceptTokenClass(EHTokRightBrace)) { |
| // a zero-length initializer list |
| node = intermediate.makeAggregate(loc); |
| return true; |
| } |
| |
| // initializer_list |
| node = nullptr; |
| do { |
| // assignment_expression |
| TIntermTyped* expr; |
| if (! acceptAssignmentExpression(expr)) { |
| expected("assignment expression in initializer list"); |
| return false; |
| } |
| |
| const bool firstNode = (node == nullptr); |
| |
| node = intermediate.growAggregate(node, expr, loc); |
| |
| // If every sub-node in the list has qualifier EvqConst, the returned node becomes |
| // EvqConst. Otherwise, it becomes EvqTemporary. That doesn't happen with e.g. |
| // EvqIn or EvqPosition, since the collection isn't EvqPosition if all the members are. |
| if (firstNode && expr->getQualifier().storage == EvqConst) |
| node->getQualifier().storage = EvqConst; |
| else if (expr->getQualifier().storage != EvqConst) |
| node->getQualifier().storage = EvqTemporary; |
| |
| // COMMA |
| if (acceptTokenClass(EHTokComma)) { |
| if (acceptTokenClass(EHTokRightBrace)) // allow trailing comma |
| return true; |
| continue; |
| } |
| |
| // RIGHT_BRACE |
| if (acceptTokenClass(EHTokRightBrace)) |
| return true; |
| |
| expected(", or }"); |
| return false; |
| } while (true); |
| } |
| |
| // Accept an assignment expression, where assignment operations |
| // associate right-to-left. That is, it is implicit, for example |
| // |
| // a op (b op (c op d)) |
| // |
| // assigment_expression |
| // : initializer |
| // | conditional_expression |
| // | conditional_expression assign_op conditional_expression assign_op conditional_expression ... |
| // |
| bool HlslGrammar::acceptAssignmentExpression(TIntermTyped*& node) |
| { |
| // initializer |
| if (peekTokenClass(EHTokLeftBrace)) { |
| if (acceptInitializer(node)) |
| return true; |
| |
| expected("initializer"); |
| return false; |
| } |
| |
| // conditional_expression |
| if (! acceptConditionalExpression(node)) |
| return false; |
| |
| // assignment operation? |
| TOperator assignOp = HlslOpMap::assignment(peek()); |
| if (assignOp == EOpNull) |
| return true; |
| |
| // assign_op |
| TSourceLoc loc = token.loc; |
| advanceToken(); |
| |
| // conditional_expression assign_op conditional_expression ... |
| // Done by recursing this function, which automatically |
| // gets the right-to-left associativity. |
| TIntermTyped* rightNode = nullptr; |
| if (! acceptAssignmentExpression(rightNode)) { |
| expected("assignment expression"); |
| return false; |
| } |
| |
| node = parseContext.handleAssign(loc, assignOp, node, rightNode); |
| node = parseContext.handleLvalue(loc, "assign", node); |
| |
| if (node == nullptr) { |
| parseContext.error(loc, "could not create assignment", "", ""); |
| return false; |
| } |
| |
| if (! peekTokenClass(EHTokComma)) |
| return true; |
| |
| return true; |
| } |
| |
| // Accept a conditional expression, which associates right-to-left, |
| // accomplished by the "true" expression calling down to lower |
| // precedence levels than this level. |
| // |
| // conditional_expression |
| // : binary_expression |
| // | binary_expression QUESTION expression COLON assignment_expression |
| // |
| bool HlslGrammar::acceptConditionalExpression(TIntermTyped*& node) |
| { |
| // binary_expression |
| if (! acceptBinaryExpression(node, PlLogicalOr)) |
| return false; |
| |
| if (! acceptTokenClass(EHTokQuestion)) |
| return true; |
| |
| node = parseContext.convertConditionalExpression(token.loc, node, false); |
| if (node == nullptr) |
| return false; |
| |
| ++parseContext.controlFlowNestingLevel; // this only needs to work right if no errors |
| |
| TIntermTyped* trueNode = nullptr; |
| if (! acceptExpression(trueNode)) { |
| expected("expression after ?"); |
| return false; |
| } |
| TSourceLoc loc = token.loc; |
| |
| if (! acceptTokenClass(EHTokColon)) { |
| expected(":"); |
| return false; |
| } |
| |
| TIntermTyped* falseNode = nullptr; |
| if (! acceptAssignmentExpression(falseNode)) { |
| expected("expression after :"); |
| return false; |
| } |
| |
| --parseContext.controlFlowNestingLevel; |
| |
| node = intermediate.addSelection(node, trueNode, falseNode, loc); |
| |
| return true; |
| } |
| |
| // Accept a binary expression, for binary operations that |
| // associate left-to-right. This is, it is implicit, for example |
| // |
| // ((a op b) op c) op d |
| // |
| // binary_expression |
| // : expression op expression op expression ... |
| // |
| // where 'expression' is the next higher level in precedence. |
| // |
| bool HlslGrammar::acceptBinaryExpression(TIntermTyped*& node, PrecedenceLevel precedenceLevel) |
| { |
| if (precedenceLevel > PlMul) |
| return acceptUnaryExpression(node); |
| |
| // assignment_expression |
| if (! acceptBinaryExpression(node, (PrecedenceLevel)(precedenceLevel + 1))) |
| return false; |
| |
| do { |
| TOperator op = HlslOpMap::binary(peek()); |
| PrecedenceLevel tokenLevel = HlslOpMap::precedenceLevel(op); |
| if (tokenLevel < precedenceLevel) |
| return true; |
| |
| // ... op |
| TSourceLoc loc = token.loc; |
| advanceToken(); |
| |
| // ... expression |
| TIntermTyped* rightNode = nullptr; |
| if (! acceptBinaryExpression(rightNode, (PrecedenceLevel)(precedenceLevel + 1))) { |
| expected("expression"); |
| return false; |
| } |
| |
| node = intermediate.addBinaryMath(op, node, rightNode, loc); |
| if (node == nullptr) { |
| parseContext.error(loc, "Could not perform requested binary operation", "", ""); |
| return false; |
| } |
| } while (true); |
| } |
| |
| // unary_expression |
| // : (type) unary_expression |
| // | + unary_expression |
| // | - unary_expression |
| // | ! unary_expression |
| // | ~ unary_expression |
| // | ++ unary_expression |
| // | -- unary_expression |
| // | postfix_expression |
| // |
| bool HlslGrammar::acceptUnaryExpression(TIntermTyped*& node) |
| { |
| // (type) unary_expression |
| // Have to look two steps ahead, because this could be, e.g., a |
| // postfix_expression instead, since that also starts with at "(". |
| if (acceptTokenClass(EHTokLeftParen)) { |
| TType castType; |
| if (acceptType(castType)) { |
| // recognize any array_specifier as part of the type |
| TArraySizes* arraySizes = nullptr; |
| acceptArraySpecifier(arraySizes); |
| if (arraySizes != nullptr) |
| castType.transferArraySizes(arraySizes); |
| TSourceLoc loc = token.loc; |
| if (acceptTokenClass(EHTokRightParen)) { |
| // We've matched "(type)" now, get the expression to cast |
| if (! acceptUnaryExpression(node)) |
| return false; |
| |
| // Hook it up like a constructor |
| TFunction* constructorFunction = parseContext.makeConstructorCall(loc, castType); |
| if (constructorFunction == nullptr) { |
| expected("type that can be constructed"); |
| return false; |
| } |
| TIntermTyped* arguments = nullptr; |
| parseContext.handleFunctionArgument(constructorFunction, arguments, node); |
| node = parseContext.handleFunctionCall(loc, constructorFunction, arguments); |
| |
| return node != nullptr; |
| } else { |
| // This could be a parenthesized constructor, ala (int(3)), and we just accepted |
| // the '(int' part. We must back up twice. |
| recedeToken(); |
| recedeToken(); |
| |
| // Note, there are no array constructors like |
| // (float[2](...)) |
| if (arraySizes != nullptr) |
| parseContext.error(loc, "parenthesized array constructor not allowed", "([]())", "", ""); |
| } |
| } else { |
| // This isn't a type cast, but it still started "(", so if it is a |
| // unary expression, it can only be a postfix_expression, so try that. |
| // Back it up first. |
| recedeToken(); |
| return acceptPostfixExpression(node); |
| } |
| } |
| |
| // peek for "op unary_expression" |
| TOperator unaryOp = HlslOpMap::preUnary(peek()); |
| |
| // postfix_expression (if no unary operator) |
| if (unaryOp == EOpNull) |
| return acceptPostfixExpression(node); |
| |
| // op unary_expression |
| TSourceLoc loc = token.loc; |
| advanceToken(); |
| if (! acceptUnaryExpression(node)) |
| return false; |
| |
| // + is a no-op |
| if (unaryOp == EOpAdd) |
| return true; |
| |
| node = intermediate.addUnaryMath(unaryOp, node, loc); |
| |
| // These unary ops require lvalues |
| if (unaryOp == EOpPreIncrement || unaryOp == EOpPreDecrement) |
| node = parseContext.handleLvalue(loc, "unary operator", node); |
| |
| return node != nullptr; |
| } |
| |
| // postfix_expression |
| // : LEFT_PAREN expression RIGHT_PAREN |
| // | literal |
| // | constructor |
| // | IDENTIFIER [ COLONCOLON IDENTIFIER [ COLONCOLON IDENTIFIER ... ] ] |
| // | function_call |
| // | postfix_expression LEFT_BRACKET integer_expression RIGHT_BRACKET |
| // | postfix_expression DOT IDENTIFIER |
| // | postfix_expression DOT IDENTIFIER arguments |
| // | postfix_expression arguments |
| // | postfix_expression INC_OP |
| // | postfix_expression DEC_OP |
| // |
| bool HlslGrammar::acceptPostfixExpression(TIntermTyped*& node) |
| { |
| // Not implemented as self-recursive: |
| // The logical "right recursion" is done with a loop at the end |
| |
| // idToken will pick up either a variable or a function name in a function call |
| HlslToken idToken; |
| |
| // Find something before the postfix operations, as they can't operate |
| // on nothing. So, no "return true", they fall through, only "return false". |
| if (acceptTokenClass(EHTokLeftParen)) { |
| // LEFT_PAREN expression RIGHT_PAREN |
| if (! acceptExpression(node)) { |
| expected("expression"); |
| return false; |
| } |
| if (! acceptTokenClass(EHTokRightParen)) { |
| expected(")"); |
| return false; |
| } |
| } else if (acceptLiteral(node)) { |
| // literal (nothing else to do yet) |
| } else if (acceptConstructor(node)) { |
| // constructor (nothing else to do yet) |
| } else if (acceptIdentifier(idToken)) { |
| // user-type, namespace name, variable, or function name |
| TString* fullName = idToken.string; |
| while (acceptTokenClass(EHTokColonColon)) { |
| // user-type or namespace name |
| fullName = NewPoolTString(fullName->c_str()); |
| fullName->append(parseContext.scopeMangler); |
| if (acceptIdentifier(idToken)) |
| fullName->append(*idToken.string); |
| else { |
| expected("identifier after ::"); |
| return false; |
| } |
| } |
| if (! peekTokenClass(EHTokLeftParen)) { |
| node = parseContext.handleVariable(idToken.loc, fullName); |
| if (node == nullptr) |
| return false; |
| } else if (acceptFunctionCall(idToken.loc, *fullName, node, nullptr)) { |
| // function_call (nothing else to do yet) |
| } else { |
| expected("function call arguments"); |
| return false; |
| } |
| } else { |
| // nothing found, can't post operate |
| return false; |
| } |
| |
| // Something was found, chain as many postfix operations as exist. |
| do { |
| TSourceLoc loc = token.loc; |
| TOperator postOp = HlslOpMap::postUnary(peek()); |
| |
| // Consume only a valid post-unary operator, otherwise we are done. |
| switch (postOp) { |
| case EOpIndexDirectStruct: |
| case EOpIndexIndirect: |
| case EOpPostIncrement: |
| case EOpPostDecrement: |
| case EOpScoping: |
| advanceToken(); |
| break; |
| default: |
| return true; |
| } |
| |
| // We have a valid post-unary operator, process it. |
| switch (postOp) { |
| case EOpScoping: |
| case EOpIndexDirectStruct: |
| { |
| // DOT IDENTIFIER |
| // includes swizzles, member variables, and member functions |
| HlslToken field; |
| if (! acceptIdentifier(field)) { |
| expected("swizzle or member"); |
| return false; |
| } |
| |
| if (peekTokenClass(EHTokLeftParen)) { |
| // member function |
| TIntermTyped* thisNode = node; |
| |
| // arguments |
| if (! acceptFunctionCall(field.loc, *field.string, node, thisNode)) { |
| expected("function parameters"); |
| return false; |
| } |
| } else |
| node = parseContext.handleDotDereference(field.loc, node, *field.string); |
| |
| break; |
| } |
| case EOpIndexIndirect: |
| { |
| // LEFT_BRACKET integer_expression RIGHT_BRACKET |
| TIntermTyped* indexNode = nullptr; |
| if (! acceptExpression(indexNode) || |
| ! peekTokenClass(EHTokRightBracket)) { |
| expected("expression followed by ']'"); |
| return false; |
| } |
| advanceToken(); |
| node = parseContext.handleBracketDereference(indexNode->getLoc(), node, indexNode); |
| if (node == nullptr) |
| return false; |
| break; |
| } |
| case EOpPostIncrement: |
| // INC_OP |
| // fall through |
| case EOpPostDecrement: |
| // DEC_OP |
| node = intermediate.addUnaryMath(postOp, node, loc); |
| node = parseContext.handleLvalue(loc, "unary operator", node); |
| break; |
| default: |
| assert(0); |
| break; |
| } |
| } while (true); |
| } |
| |
| // constructor |
| // : type argument_list |
| // |
| bool HlslGrammar::acceptConstructor(TIntermTyped*& node) |
| { |
| // type |
| TType type; |
| if (acceptType(type)) { |
| TFunction* constructorFunction = parseContext.makeConstructorCall(token.loc, type); |
| if (constructorFunction == nullptr) |
| return false; |
| |
| // arguments |
| TIntermTyped* arguments = nullptr; |
| if (! acceptArguments(constructorFunction, arguments)) { |
| // It's possible this is a type keyword used as an identifier. Put the token back |
| // for later use. |
| recedeToken(); |
| return false; |
| } |
| |
| // hook it up |
| node = parseContext.handleFunctionCall(arguments->getLoc(), constructorFunction, arguments); |
| |
| return node != nullptr; |
| } |
| |
| return false; |
| } |
| |
| // The function_call identifier was already recognized, and passed in as idToken. |
| // |
| // function_call |
| // : [idToken] arguments |
| // |
| bool HlslGrammar::acceptFunctionCall(const TSourceLoc& loc, TString& name, TIntermTyped*& node, TIntermTyped* baseObject) |
| { |
| // name |
| TString* functionName = nullptr; |
| if (baseObject == nullptr) { |
| functionName = &name; |
| } else if (parseContext.isBuiltInMethod(loc, baseObject, name)) { |
| // Built-in methods are not in the symbol table as methods, but as global functions |
| // taking an explicit 'this' as the first argument. |
| functionName = NewPoolTString(BUILTIN_PREFIX); |
| functionName->append(name); |
| } else { |
| if (! baseObject->getType().isStruct()) { |
| expected("structure"); |
| return false; |
| } |
| functionName = NewPoolTString(""); |
| functionName->append(baseObject->getType().getTypeName()); |
| parseContext.addScopeMangler(*functionName); |
| functionName->append(name); |
| } |
| |
| // function |
| TFunction* function = new TFunction(functionName, TType(EbtVoid)); |
| |
| // arguments |
| TIntermTyped* arguments = nullptr; |
| if (baseObject != nullptr) { |
| // Non-static member functions have an implicit first argument of the base object. |
| parseContext.handleFunctionArgument(function, arguments, baseObject); |
| } |
| if (! acceptArguments(function, arguments)) |
| return false; |
| |
| // call |
| node = parseContext.handleFunctionCall(loc, function, arguments); |
| |
| return node != nullptr; |
| } |
| |
| // arguments |
| // : LEFT_PAREN expression COMMA expression COMMA ... RIGHT_PAREN |
| // |
| // The arguments are pushed onto the 'function' argument list and |
| // onto the 'arguments' aggregate. |
| // |
| bool HlslGrammar::acceptArguments(TFunction* function, TIntermTyped*& arguments) |
| { |
| // LEFT_PAREN |
| if (! acceptTokenClass(EHTokLeftParen)) |
| return false; |
| |
| // RIGHT_PAREN |
| if (acceptTokenClass(EHTokRightParen)) |
| return true; |
| |
| // must now be at least one expression... |
| do { |
| // expression |
| TIntermTyped* arg; |
| if (! acceptAssignmentExpression(arg)) |
| return false; |
| |
| // hook it up |
| parseContext.handleFunctionArgument(function, arguments, arg); |
| |
| // COMMA |
| if (! acceptTokenClass(EHTokComma)) |
| break; |
| } while (true); |
| |
| // RIGHT_PAREN |
| if (! acceptTokenClass(EHTokRightParen)) { |
| expected(")"); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool HlslGrammar::acceptLiteral(TIntermTyped*& node) |
| { |
| switch (token.tokenClass) { |
| case EHTokIntConstant: |
| node = intermediate.addConstantUnion(token.i, token.loc, true); |
| break; |
| case EHTokUintConstant: |
| node = intermediate.addConstantUnion(token.u, token.loc, true); |
| break; |
| case EHTokFloat16Constant: |
| node = intermediate.addConstantUnion(token.d, EbtFloat16, token.loc, true); |
| break; |
| case EHTokFloatConstant: |
| node = intermediate.addConstantUnion(token.d, EbtFloat, token.loc, true); |
| break; |
| case EHTokDoubleConstant: |
| node = intermediate.addConstantUnion(token.d, EbtDouble, token.loc, true); |
| break; |
| case EHTokBoolConstant: |
| node = intermediate.addConstantUnion(token.b, token.loc, true); |
| break; |
| case EHTokStringConstant: |
| node = intermediate.addConstantUnion(token.string, token.loc, true); |
| break; |
| |
| default: |
| return false; |
| } |
| |
| advanceToken(); |
| |
| return true; |
| } |
| |
| // simple_statement |
| // : SEMICOLON |
| // | declaration_statement |
| // | expression SEMICOLON |
| // |
| bool HlslGrammar::acceptSimpleStatement(TIntermNode*& statement) |
| { |
| // SEMICOLON |
| if (acceptTokenClass(EHTokSemicolon)) |
| return true; |
| |
| // declaration |
| if (acceptDeclaration(statement)) |
| return true; |
| |
| // expression |
| TIntermTyped* node; |
| if (acceptExpression(node)) |
| statement = node; |
| else |
| return false; |
| |
| // SEMICOLON (following an expression) |
| if (acceptTokenClass(EHTokSemicolon)) |
| return true; |
| else { |
| expected(";"); |
| return false; |
| } |
| } |
| |
| // compound_statement |
| // : LEFT_CURLY statement statement ... RIGHT_CURLY |
| // |
| bool HlslGrammar::acceptCompoundStatement(TIntermNode*& retStatement) |
| { |
| TIntermAggregate* compoundStatement = nullptr; |
| |
| // LEFT_CURLY |
| if (! acceptTokenClass(EHTokLeftBrace)) |
| return false; |
| |
| // statement statement ... |
| TIntermNode* statement = nullptr; |
| while (acceptStatement(statement)) { |
| TIntermBranch* branch = statement ? statement->getAsBranchNode() : nullptr; |
| if (branch != nullptr && (branch->getFlowOp() == EOpCase || |
| branch->getFlowOp() == EOpDefault)) { |
| // hook up individual subsequences within a switch statement |
| parseContext.wrapupSwitchSubsequence(compoundStatement, statement); |
| compoundStatement = nullptr; |
| } else { |
| // hook it up to the growing compound statement |
| compoundStatement = intermediate.growAggregate(compoundStatement, statement); |
| } |
| } |
| if (compoundStatement) |
| compoundStatement->setOperator(EOpSequence); |
| |
| retStatement = compoundStatement; |
| |
| // RIGHT_CURLY |
| return acceptTokenClass(EHTokRightBrace); |
| } |
| |
| bool HlslGrammar::acceptScopedStatement(TIntermNode*& statement) |
| { |
| parseContext.pushScope(); |
| bool result = acceptStatement(statement); |
| parseContext.popScope(); |
| |
| return result; |
| } |
| |
| bool HlslGrammar::acceptScopedCompoundStatement(TIntermNode*& statement) |
| { |
| parseContext.pushScope(); |
| bool result = acceptCompoundStatement(statement); |
| parseContext.popScope(); |
| |
| return result; |
| } |
| |
| // statement |
| // : attributes attributed_statement |
| // |
| // attributed_statement |
| // : compound_statement |
| // | simple_statement |
| // | selection_statement |
| // | switch_statement |
| // | case_label |
| // | default_label |
| // | iteration_statement |
| // | jump_statement |
| // |
| bool HlslGrammar::acceptStatement(TIntermNode*& statement) |
| { |
| statement = nullptr; |
| |
| // attributes |
| TAttributes attributes; |
| acceptAttributes(attributes); |
| |
| // attributed_statement |
| switch (peek()) { |
| case EHTokLeftBrace: |
| return acceptScopedCompoundStatement(statement); |
| |
| case EHTokIf: |
| return acceptSelectionStatement(statement, attributes); |
| |
| case EHTokSwitch: |
| return acceptSwitchStatement(statement, attributes); |
| |
| case EHTokFor: |
| case EHTokDo: |
| case EHTokWhile: |
| return acceptIterationStatement(statement, attributes); |
| |
| case EHTokContinue: |
| case EHTokBreak: |
| case EHTokDiscard: |
| case EHTokReturn: |
| return acceptJumpStatement(statement); |
| |
| case EHTokCase: |
| return acceptCaseLabel(statement); |
| case EHTokDefault: |
| return acceptDefaultLabel(statement); |
| |
| case EHTokRightBrace: |
| // Performance: not strictly necessary, but stops a bunch of hunting early, |
| // and is how sequences of statements end. |
| return false; |
| |
| default: |
| return acceptSimpleStatement(statement); |
| } |
| |
| return true; |
| } |
| |
| // attributes |
| // : [zero or more:] bracketed-attribute |
| // |
| // bracketed-attribute: |
| // : LEFT_BRACKET scoped-attribute RIGHT_BRACKET |
| // : LEFT_BRACKET LEFT_BRACKET scoped-attribute RIGHT_BRACKET RIGHT_BRACKET |
| // |
| // scoped-attribute: |
| // : attribute |
| // | namespace COLON COLON attribute |
| // |
| // attribute: |
| // : UNROLL |
| // | UNROLL LEFT_PAREN literal RIGHT_PAREN |
| // | FASTOPT |
| // | ALLOW_UAV_CONDITION |
| // | BRANCH |
| // | FLATTEN |
| // | FORCECASE |
| // | CALL |
| // | DOMAIN |
| // | EARLYDEPTHSTENCIL |
| // | INSTANCE |
| // | MAXTESSFACTOR |
| // | OUTPUTCONTROLPOINTS |
| // | OUTPUTTOPOLOGY |
| // | PARTITIONING |
| // | PATCHCONSTANTFUNC |
| // | NUMTHREADS LEFT_PAREN x_size, y_size,z z_size RIGHT_PAREN |
| // |
| void HlslGrammar::acceptAttributes(TAttributes& attributes) |
| { |
| // For now, accept the [ XXX(X) ] syntax, but drop all but |
| // numthreads, which is used to set the CS local size. |
| // TODO: subset to correct set? Pass on? |
| do { |
| HlslToken attributeToken; |
| |
| // LEFT_BRACKET? |
| if (! acceptTokenClass(EHTokLeftBracket)) |
| return; |
| // another LEFT_BRACKET? |
| bool doubleBrackets = false; |
| if (acceptTokenClass(EHTokLeftBracket)) |
| doubleBrackets = true; |
| |
| // attribute? (could be namespace; will adjust later) |
| if (!acceptIdentifier(attributeToken)) { |
| if (!peekTokenClass(EHTokRightBracket)) { |
| expected("namespace or attribute identifier"); |
| advanceToken(); |
| } |
| } |
| |
| TString nameSpace; |
| if (acceptTokenClass(EHTokColonColon)) { |
| // namespace COLON COLON |
| nameSpace = *attributeToken.string; |
| // attribute |
| if (!acceptIdentifier(attributeToken)) { |
| expected("attribute identifier"); |
| return; |
| } |
| } |
| |
| TIntermAggregate* expressions = nullptr; |
| |
| // (x, ...) |
| if (acceptTokenClass(EHTokLeftParen)) { |
| expressions = new TIntermAggregate; |
| |
| TIntermTyped* node; |
| bool expectingExpression = false; |
| |
| while (acceptAssignmentExpression(node)) { |
| expectingExpression = false; |
| expressions->getSequence().push_back(node); |
| if (acceptTokenClass(EHTokComma)) |
| expectingExpression = true; |
| } |
| |
| // 'expressions' is an aggregate with the expressions in it |
| if (! acceptTokenClass(EHTokRightParen)) |
| expected(")"); |
| |
| // Error for partial or missing expression |
| if (expectingExpression || expressions->getSequence().empty()) |
| expected("expression"); |
| } |
| |
| // RIGHT_BRACKET |
| if (!acceptTokenClass(EHTokRightBracket)) { |
| expected("]"); |
| return; |
| } |
| // another RIGHT_BRACKET? |
| if (doubleBrackets && !acceptTokenClass(EHTokRightBracket)) { |
| expected("]]"); |
| return; |
| } |
| |
| // Add any values we found into the attribute map. |
| if (attributeToken.string != nullptr) { |
| TAttributeType attributeType = parseContext.attributeFromName(nameSpace, *attributeToken.string); |
| if (attributeType == EatNone) |
| parseContext.warn(attributeToken.loc, "unrecognized attribute", attributeToken.string->c_str(), ""); |
| else { |
| TAttributeArgs attributeArgs = { attributeType, expressions }; |
| attributes.push_back(attributeArgs); |
| } |
| } |
| } while (true); |
| } |
| |
| // selection_statement |
| // : IF LEFT_PAREN expression RIGHT_PAREN statement |
| // : IF LEFT_PAREN expression RIGHT_PAREN statement ELSE statement |
| // |
| bool HlslGrammar::acceptSelectionStatement(TIntermNode*& statement, const TAttributes& attributes) |
| { |
| TSourceLoc loc = token.loc; |
| |
| // IF |
| if (! acceptTokenClass(EHTokIf)) |
| return false; |
| |
| // so that something declared in the condition is scoped to the lifetimes |
| // of the then-else statements |
| parseContext.pushScope(); |
| |
| // LEFT_PAREN expression RIGHT_PAREN |
| TIntermTyped* condition; |
| if (! acceptParenExpression(condition)) |
| return false; |
| condition = parseContext.convertConditionalExpression(loc, condition); |
| if (condition == nullptr) |
| return false; |
| |
| // create the child statements |
| TIntermNodePair thenElse = { nullptr, nullptr }; |
| |
| ++parseContext.controlFlowNestingLevel; // this only needs to work right if no errors |
| |
| // then statement |
| if (! acceptScopedStatement(thenElse.node1)) { |
| expected("then statement"); |
| return false; |
| } |
| |
| // ELSE |
| if (acceptTokenClass(EHTokElse)) { |
| // else statement |
| if (! acceptScopedStatement(thenElse.node2)) { |
| expected("else statement"); |
| return false; |
| } |
| } |
| |
| // Put the pieces together |
| statement = intermediate.addSelection(condition, thenElse, loc); |
| parseContext.handleSelectionAttributes(loc, statement->getAsSelectionNode(), attributes); |
| |
| parseContext.popScope(); |
| --parseContext.controlFlowNestingLevel; |
| |
| return true; |
| } |
| |
| // switch_statement |
| // : SWITCH LEFT_PAREN expression RIGHT_PAREN compound_statement |
| // |
| bool HlslGrammar::acceptSwitchStatement(TIntermNode*& statement, const TAttributes& attributes) |
| { |
| // SWITCH |
| TSourceLoc loc = token.loc; |
| |
| if (! acceptTokenClass(EHTokSwitch)) |
| return false; |
| |
| // LEFT_PAREN expression RIGHT_PAREN |
| parseContext.pushScope(); |
| TIntermTyped* switchExpression; |
| if (! acceptParenExpression(switchExpression)) { |
| parseContext.popScope(); |
| return false; |
| } |
| |
| // compound_statement |
| parseContext.pushSwitchSequence(new TIntermSequence); |
| |
| ++parseContext.controlFlowNestingLevel; |
| bool statementOkay = acceptCompoundStatement(statement); |
| --parseContext.controlFlowNestingLevel; |
| |
| if (statementOkay) |
| statement = parseContext.addSwitch(loc, switchExpression, statement ? statement->getAsAggregate() : nullptr, |
| attributes); |
| |
| parseContext.popSwitchSequence(); |
| parseContext.popScope(); |
| |
| return statementOkay; |
| } |
| |
| // iteration_statement |
| // : WHILE LEFT_PAREN condition RIGHT_PAREN statement |
| // | DO LEFT_BRACE statement RIGHT_BRACE WHILE LEFT_PAREN expression RIGHT_PAREN SEMICOLON |
| // | FOR LEFT_PAREN for_init_statement for_rest_statement RIGHT_PAREN statement |
| // |
| // Non-speculative, only call if it needs to be found; WHILE or DO or FOR already seen. |
| bool HlslGrammar::acceptIterationStatement(TIntermNode*& statement, const TAttributes& attributes) |
| { |
| TSourceLoc loc = token.loc; |
| TIntermTyped* condition = nullptr; |
| |
| EHlslTokenClass loop = peek(); |
| assert(loop == EHTokDo || loop == EHTokFor || loop == EHTokWhile); |
| |
| // WHILE or DO or FOR |
| advanceToken(); |
| |
| TIntermLoop* loopNode = nullptr; |
| switch (loop) { |
| case EHTokWhile: |
| // so that something declared in the condition is scoped to the lifetime |
| // of the while sub-statement |
| parseContext.pushScope(); // this only needs to work right if no errors |
| parseContext.nestLooping(); |
| ++parseContext.controlFlowNestingLevel; |
| |
| // LEFT_PAREN condition RIGHT_PAREN |
| if (! acceptParenExpression(condition)) |
| return false; |
| condition = parseContext.convertConditionalExpression(loc, condition); |
| if (condition == nullptr) |
| return false; |
| |
| // statement |
| if (! acceptScopedStatement(statement)) { |
| expected("while sub-statement"); |
| return false; |
| } |
| |
| parseContext.unnestLooping(); |
| parseContext.popScope(); |
| --parseContext.controlFlowNestingLevel; |
| |
| loopNode = intermediate.addLoop(statement, condition, nullptr, true, loc); |
| statement = loopNode; |
| break; |
| |
| case EHTokDo: |
| parseContext.nestLooping(); // this only needs to work right if no errors |
| ++parseContext.controlFlowNestingLevel; |
| |
| // statement |
| if (! acceptScopedStatement(statement)) { |
| expected("do sub-statement"); |
| return false; |
| } |
| |
| // WHILE |
| if (! acceptTokenClass(EHTokWhile)) { |
| expected("while"); |
| return false; |
| } |
| |
| // LEFT_PAREN condition RIGHT_PAREN |
| if (! acceptParenExpression(condition)) |
| return false; |
| condition = parseContext.convertConditionalExpression(loc, condition); |
| if (condition == nullptr) |
| return false; |
| |
| if (! acceptTokenClass(EHTokSemicolon)) |
| expected(";"); |
| |
| parseContext.unnestLooping(); |
| --parseContext.controlFlowNestingLevel; |
| |
| loopNode = intermediate.addLoop(statement, condition, 0, false, loc); |
| statement = loopNode; |
| break; |
| |
| case EHTokFor: |
| { |
| // LEFT_PAREN |
| if (! acceptTokenClass(EHTokLeftParen)) |
| expected("("); |
| |
| // so that something declared in the condition is scoped to the lifetime |
| // of the for sub-statement |
| parseContext.pushScope(); |
| |
| // initializer |
| TIntermNode* initNode = nullptr; |
| if (! acceptSimpleStatement(initNode)) |
| expected("for-loop initializer statement"); |
| |
| parseContext.nestLooping(); // this only needs to work right if no errors |
| ++parseContext.controlFlowNestingLevel; |
| |
| // condition SEMI_COLON |
| acceptExpression(condition); |
| if (! acceptTokenClass(EHTokSemicolon)) |
| expected(";"); |
| if (condition != nullptr) { |
| condition = parseContext.convertConditionalExpression(loc, condition); |
| if (condition == nullptr) |
| return false; |
| } |
| |
| // iterator SEMI_COLON |
| TIntermTyped* iterator = nullptr; |
| acceptExpression(iterator); |
| if (! acceptTokenClass(EHTokRightParen)) |
| expected(")"); |
| |
| // statement |
| if (! acceptScopedStatement(statement)) { |
| expected("for sub-statement"); |
| return false; |
| } |
| |
| statement = intermediate.addForLoop(statement, initNode, condition, iterator, true, loc, loopNode); |
| |
| parseContext.popScope(); |
| parseContext.unnestLooping(); |
| --parseContext.controlFlowNestingLevel; |
| |
| break; |
| } |
| |
| default: |
| return false; |
| } |
| |
| parseContext.handleLoopAttributes(loc, loopNode, attributes); |
| return true; |
| } |
| |
| // jump_statement |
| // : CONTINUE SEMICOLON |
| // | BREAK SEMICOLON |
| // | DISCARD SEMICOLON |
| // | RETURN SEMICOLON |
| // | RETURN expression SEMICOLON |
| // |
| bool HlslGrammar::acceptJumpStatement(TIntermNode*& statement) |
| { |
| EHlslTokenClass jump = peek(); |
| switch (jump) { |
| case EHTokContinue: |
| case EHTokBreak: |
| case EHTokDiscard: |
| case EHTokReturn: |
| advanceToken(); |
| break; |
| default: |
| // not something we handle in this function |
| return false; |
| } |
| |
| switch (jump) { |
| case EHTokContinue: |
| statement = intermediate.addBranch(EOpContinue, token.loc); |
| if (parseContext.loopNestingLevel == 0) { |
| expected("loop"); |
| return false; |
| } |
| break; |
| case EHTokBreak: |
| statement = intermediate.addBranch(EOpBreak, token.loc); |
| if (parseContext.loopNestingLevel == 0 && parseContext.switchSequenceStack.size() == 0) { |
| expected("loop or switch"); |
| return false; |
| } |
| break; |
| case EHTokDiscard: |
| statement = intermediate.addBranch(EOpKill, token.loc); |
| break; |
| |
| case EHTokReturn: |
| { |
| // expression |
| TIntermTyped* node; |
| if (acceptExpression(node)) { |
| // hook it up |
| statement = parseContext.handleReturnValue(token.loc, node); |
| } else |
| statement = intermediate.addBranch(EOpReturn, token.loc); |
| break; |
| } |
| |
| default: |
| assert(0); |
| return false; |
| } |
| |
| // SEMICOLON |
| if (! acceptTokenClass(EHTokSemicolon)) |
| expected(";"); |
| |
| return true; |
| } |
| |
| // case_label |
| // : CASE expression COLON |
| // |
| bool HlslGrammar::acceptCaseLabel(TIntermNode*& statement) |
| { |
| TSourceLoc loc = token.loc; |
| if (! acceptTokenClass(EHTokCase)) |
| return false; |
| |
| TIntermTyped* expression; |
| if (! acceptExpression(expression)) { |
| expected("case expression"); |
| return false; |
| } |
| |
| if (! acceptTokenClass(EHTokColon)) { |
| expected(":"); |
| return false; |
| } |
| |
| statement = parseContext.intermediate.addBranch(EOpCase, expression, loc); |
| |
| return true; |
| } |
| |
| // default_label |
| // : DEFAULT COLON |
| // |
| bool HlslGrammar::acceptDefaultLabel(TIntermNode*& statement) |
| { |
| TSourceLoc loc = token.loc; |
| if (! acceptTokenClass(EHTokDefault)) |
| return false; |
| |
| if (! acceptTokenClass(EHTokColon)) { |
| expected(":"); |
| return false; |
| } |
| |
| statement = parseContext.intermediate.addBranch(EOpDefault, loc); |
| |
| return true; |
| } |
| |
| // array_specifier |
| // : LEFT_BRACKET integer_expression RGHT_BRACKET ... // optional |
| // : LEFT_BRACKET RGHT_BRACKET // optional |
| // |
| void HlslGrammar::acceptArraySpecifier(TArraySizes*& arraySizes) |
| { |
| arraySizes = nullptr; |
| |
| // Early-out if there aren't any array dimensions |
| if (!peekTokenClass(EHTokLeftBracket)) |
| return; |
| |
| // If we get here, we have at least one array dimension. This will track the sizes we find. |
| arraySizes = new TArraySizes; |
| |
| // Collect each array dimension. |
| while (acceptTokenClass(EHTokLeftBracket)) { |
| TSourceLoc loc = token.loc; |
| TIntermTyped* sizeExpr = nullptr; |
| |
| // Array sizing expression is optional. If omitted, array will be later sized by initializer list. |
| const bool hasArraySize = acceptAssignmentExpression(sizeExpr); |
| |
| if (! acceptTokenClass(EHTokRightBracket)) { |
| expected("]"); |
| return; |
| } |
| |
| if (hasArraySize) { |
| TArraySize arraySize; |
| parseContext.arraySizeCheck(loc, sizeExpr, arraySize); |
| arraySizes->addInnerSize(arraySize); |
| } else { |
| arraySizes->addInnerSize(0); // sized by initializers. |
| } |
| } |
| } |
| |
| // post_decls |
| // : COLON semantic // optional |
| // COLON PACKOFFSET LEFT_PAREN c[Subcomponent][.component] RIGHT_PAREN // optional |
| // COLON REGISTER LEFT_PAREN [shader_profile,] Type#[subcomp]opt (COMMA SPACEN)opt RIGHT_PAREN // optional |
| // COLON LAYOUT layout_qualifier_list |
| // annotations // optional |
| // |
| // Return true if any tokens were accepted. That is, |
| // false can be returned on successfully recognizing nothing, |
| // not necessarily meaning bad syntax. |
| // |
| bool HlslGrammar::acceptPostDecls(TQualifier& qualifier) |
| { |
| bool found = false; |
| |
| do { |
| // COLON |
| if (acceptTokenClass(EHTokColon)) { |
| found = true; |
| HlslToken idToken; |
| if (peekTokenClass(EHTokLayout)) |
| acceptLayoutQualifierList(qualifier); |
| else if (acceptTokenClass(EHTokPackOffset)) { |
| // PACKOFFSET LEFT_PAREN c[Subcomponent][.component] RIGHT_PAREN |
| if (! acceptTokenClass(EHTokLeftParen)) { |
| expected("("); |
| return false; |
| } |
| HlslToken locationToken; |
| if (! acceptIdentifier(locationToken)) { |
| expected("c[subcomponent][.component]"); |
| return false; |
| } |
| HlslToken componentToken; |
| if (acceptTokenClass(EHTokDot)) { |
| if (! acceptIdentifier(componentToken)) { |
| expected("component"); |
| return false; |
| } |
| } |
| if (! acceptTokenClass(EHTokRightParen)) { |
| expected(")"); |
| break; |
| } |
| parseContext.handlePackOffset(locationToken.loc, qualifier, *locationToken.string, componentToken.string); |
| } else if (! acceptIdentifier(idToken)) { |
| expected("layout, semantic, packoffset, or register"); |
| return false; |
| } else if (*idToken.string == "register") { |
| // REGISTER LEFT_PAREN [shader_profile,] Type#[subcomp]opt (COMMA SPACEN)opt RIGHT_PAREN |
| // LEFT_PAREN |
| if (! acceptTokenClass(EHTokLeftParen)) { |
| expected("("); |
| return false; |
| } |
| HlslToken registerDesc; // for Type# |
| HlslToken profile; |
| if (! acceptIdentifier(registerDesc)) { |
| expected("register number description"); |
| return false; |
| } |
| if (registerDesc.string->size() > 1 && !isdigit((*registerDesc.string)[1]) && |
| acceptTokenClass(EHTokComma)) { |
| // Then we didn't really see the registerDesc yet, it was |
| // actually the profile. Adjust... |
| profile = registerDesc; |
| if (! acceptIdentifier(registerDesc)) { |
| expected("register number description"); |
| return false; |
| } |
| } |
| int subComponent = 0; |
| if (acceptTokenClass(EHTokLeftBracket)) { |
| // LEFT_BRACKET subcomponent RIGHT_BRACKET |
| if (! peekTokenClass(EHTokIntConstant)) { |
| expected("literal integer"); |
| return false; |
| } |
| subComponent = token.i; |
| advanceToken(); |
| if (! acceptTokenClass(EHTokRightBracket)) { |
| expected("]"); |
| break; |
| } |
| } |
| // (COMMA SPACEN)opt |
| HlslToken spaceDesc; |
| if (acceptTokenClass(EHTokComma)) { |
| if (! acceptIdentifier(spaceDesc)) { |
| expected ("space identifier"); |
| return false; |
| } |
| } |
| // RIGHT_PAREN |
| if (! acceptTokenClass(EHTokRightParen)) { |
| expected(")"); |
| break; |
| } |
| parseContext.handleRegister(registerDesc.loc, qualifier, profile.string, *registerDesc.string, subComponent, spaceDesc.string); |
| } else { |
| // semantic, in idToken.string |
| TString semanticUpperCase = *idToken.string; |
| std::transform(semanticUpperCase.begin(), semanticUpperCase.end(), semanticUpperCase.begin(), ::toupper); |
| parseContext.handleSemantic(idToken.loc, qualifier, mapSemantic(semanticUpperCase.c_str()), semanticUpperCase); |
| } |
| } else if (peekTokenClass(EHTokLeftAngle)) { |
| found = true; |
| acceptAnnotations(qualifier); |
| } else |
| break; |
| |
| } while (true); |
| |
| return found; |
| } |
| |
| // |
| // Get the stream of tokens from the scanner, but skip all syntactic/semantic |
| // processing. |
| // |
| bool HlslGrammar::captureBlockTokens(TVector<HlslToken>& tokens) |
| { |
| if (! peekTokenClass(EHTokLeftBrace)) |
| return false; |
| |
| int braceCount = 0; |
| |
| do { |
| switch (peek()) { |
| case EHTokLeftBrace: |
| ++braceCount; |
| break; |
| case EHTokRightBrace: |
| --braceCount; |
| break; |
| case EHTokNone: |
| // End of input before balance { } is bad... |
| return false; |
| default: |
| break; |
| } |
| |
| tokens.push_back(token); |
| advanceToken(); |
| } while (braceCount > 0); |
| |
| return true; |
| } |
| |
| // Return a string for just the types that can also be declared as an identifier. |
| const char* HlslGrammar::getTypeString(EHlslTokenClass tokenClass) const |
| { |
| switch (tokenClass) { |
| case EHTokSample: return "sample"; |
| case EHTokHalf: return "half"; |
| case EHTokHalf1x1: return "half1x1"; |
| case EHTokHalf1x2: return "half1x2"; |
| case EHTokHalf1x3: return "half1x3"; |
| case EHTokHalf1x4: return "half1x4"; |
| case EHTokHalf2x1: return "half2x1"; |
| case EHTokHalf2x2: return "half2x2"; |
| case EHTokHalf2x3: return "half2x3"; |
| case EHTokHalf2x4: return "half2x4"; |
| case EHTokHalf3x1: return "half3x1"; |
| case EHTokHalf3x2: return "half3x2"; |
| case EHTokHalf3x3: return "half3x3"; |
| case EHTokHalf3x4: return "half3x4"; |
| case EHTokHalf4x1: return "half4x1"; |
| case EHTokHalf4x2: return "half4x2"; |
| case EHTokHalf4x3: return "half4x3"; |
| case EHTokHalf4x4: return "half4x4"; |
| case EHTokBool: return "bool"; |
| case EHTokFloat: return "float"; |
| case EHTokDouble: return "double"; |
| case EHTokInt: return "int"; |
| case EHTokUint: return "uint"; |
| case EHTokMin16float: return "min16float"; |
| case EHTokMin10float: return "min10float"; |
| case EHTokMin16int: return "min16int"; |
| case EHTokMin12int: return "min12int"; |
| case EHTokConstantBuffer: return "ConstantBuffer"; |
| case EHTokLayout: return "layout"; |
| default: |
| return nullptr; |
| } |
| } |
| |
| } // end namespace glslang |
