| 1 | //===--- OperatorPrecedence.h - Operator precedence levels ------*- C++ -*-===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | /// |
| 9 | /// \file |
| 10 | /// Defines and computes precedence levels for binary/ternary operators. |
| 11 | /// |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #ifndef LLVM_CLANG_BASIC_OPERATORPRECEDENCE_H |
| 15 | #define LLVM_CLANG_BASIC_OPERATORPRECEDENCE_H |
| 16 | |
| 17 | #include "clang/Basic/TokenKinds.h" |
| 18 | |
| 19 | namespace clang { |
| 20 | |
| 21 | /// PrecedenceLevels - These are precedences for the binary/ternary |
| 22 | /// operators in the C99 grammar. These have been named to relate |
| 23 | /// with the C99 grammar productions. Low precedences numbers bind |
| 24 | /// more weakly than high numbers. |
| 25 | namespace prec { |
| 26 | enum Level { |
| 27 | Unknown = 0, // Not binary operator. |
| 28 | Comma = 1, // , |
| 29 | Assignment = 2, // =, *=, /=, %=, +=, -=, <<=, >>=, &=, ^=, |= |
| 30 | Conditional = 3, // ? |
| 31 | LogicalOr = 4, // || |
| 32 | LogicalAnd = 5, // && |
| 33 | InclusiveOr = 6, // | |
| 34 | ExclusiveOr = 7, // ^ |
| 35 | And = 8, // & |
| 36 | Equality = 9, // ==, != |
| 37 | Relational = 10, // >=, <=, >, < |
| 38 | Spaceship = 11, // <=> |
| 39 | Shift = 12, // <<, >> |
| 40 | Additive = 13, // -, + |
| 41 | Multiplicative = 14, // *, /, % |
| 42 | PointerToMember = 15 // .*, ->* |
| 43 | }; |
| 44 | } |
| 45 | |
| 46 | /// Return the precedence of the specified binary operator token. |
| 47 | prec::Level getBinOpPrecedence(tok::TokenKind Kind, bool GreaterThanIsOperator, |
| 48 | bool CPlusPlus11); |
| 49 | |
| 50 | } // end namespace clang |
| 51 | |
| 52 | #endif // LLVM_CLANG_OPERATOR_PRECEDENCE_H |
| 53 |