clang API Documentation
00001 //===--- OperatorPrecedence.h - Operator precedence levels ------*- C++ -*-===// 00002 // 00003 // The LLVM Compiler Infrastructure 00004 // 00005 // This file is distributed under the University of Illinois Open Source 00006 // License. See LICENSE.TXT for details. 00007 // 00008 //===----------------------------------------------------------------------===// 00009 /// 00010 /// \file 00011 /// \brief Defines and computes precedence levels for binary/ternary operators. 00012 /// 00013 //===----------------------------------------------------------------------===// 00014 00015 #ifndef LLVM_CLANG_BASIC_OPERATORPRECEDENCE_H 00016 #define LLVM_CLANG_BASIC_OPERATORPRECEDENCE_H 00017 00018 #include "clang/Basic/TokenKinds.h" 00019 00020 namespace clang { 00021 00022 /// PrecedenceLevels - These are precedences for the binary/ternary 00023 /// operators in the C99 grammar. These have been named to relate 00024 /// with the C99 grammar productions. Low precedences numbers bind 00025 /// more weakly than high numbers. 00026 namespace prec { 00027 enum Level { 00028 Unknown = 0, // Not binary operator. 00029 Comma = 1, // , 00030 Assignment = 2, // =, *=, /=, %=, +=, -=, <<=, >>=, &=, ^=, |= 00031 Conditional = 3, // ? 00032 LogicalOr = 4, // || 00033 LogicalAnd = 5, // && 00034 InclusiveOr = 6, // | 00035 ExclusiveOr = 7, // ^ 00036 And = 8, // & 00037 Equality = 9, // ==, != 00038 Relational = 10, // >=, <=, >, < 00039 Shift = 11, // <<, >> 00040 Additive = 12, // -, + 00041 Multiplicative = 13, // *, /, % 00042 PointerToMember = 14 // .*, ->* 00043 }; 00044 } 00045 00046 /// \brief Return the precedence of the specified binary operator token. 00047 prec::Level getBinOpPrecedence(tok::TokenKind Kind, bool GreaterThanIsOperator, 00048 bool CPlusPlus11); 00049 00050 } // end namespace clang 00051 00052 #endif // LLVM_CLANG_OPERATOR_PRECEDENCE_H