| // Copyright 2019 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #pragma once |
| |
| #include <string_view> |
| |
| namespace zxdb { |
| |
| // This type must start at 0 and increment monotonically since it is used |
| // as an index into the parser lookup table. |
| enum class ExprTokenType : size_t { |
| kInvalid = 0, |
| kName, // random_text |
| kInteger, // 123, 0x89ab |
| kEquals, // = |
| kEquality, // == |
| kDot, // . |
| kComma, // , |
| kStar, // * |
| kAmpersand, // & |
| kDoubleAnd, // && (logical "and" or rvalue reference) |
| kBitwiseOr, // | |
| kLogicalOr, // || |
| kArrow, // -> |
| kLeftSquare, // [ |
| kRightSquare, // ] |
| kLeftParen, // ( |
| kRightParen, // ) |
| kLess, // < |
| kGreater, // > |
| kMinus, // - (by itself, not part of "->") |
| kPlus, // + |
| kColonColon, // :: |
| |
| // Special keywords. |
| kTrue, // true |
| kFalse, // false |
| kConst, // const |
| kVolatile, // volatile |
| kRestrict, // restrict |
| kReinterpretCast, // reinterpret_cast |
| kStaticCast, // static_cast |
| kSizeof, // sizeof |
| |
| // Keep last. Not a token, but the count of tokens. |
| kNumTypes |
| }; |
| |
| constexpr size_t kNumExprTokenTypes = |
| static_cast<size_t>(ExprTokenType::kNumTypes); |
| |
| struct ExprTokenRecord { |
| constexpr ExprTokenRecord() = default; |
| constexpr ExprTokenRecord(ExprTokenType t, |
| std::string_view static_val = std::string_view()); |
| |
| ExprTokenType type = ExprTokenType::kInvalid; |
| |
| // Nonempty when this token type contains a known string, e.g. "&&" rather |
| // than some arbitrary name. |
| std::string_view static_value; |
| |
| // Set to true when the static value of this token is alphanumeric such that |
| // to separate it from another token requires a non-alphanumeric character. |
| bool is_alphanum = false; |
| |
| // We will likely need more stuff here such as what languages this token |
| // applies to (C, Rust, etc.). |
| }; |
| |
| const ExprTokenRecord& RecordForTokenType(ExprTokenType); |
| |
| } // namespace zxdb |
