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      1 //===--- OperatorPrecedence.h - Operator precedence levels ------*- C++ -*-===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is distributed under the University of Illinois Open Source
      6 // License. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 ///
     10 /// \file
     11 /// \brief Defines and computes precedence levels for binary/ternary operators.
     12 ///
     13 //===----------------------------------------------------------------------===//
     14 
     15 #ifndef LLVM_CLANG_OPERATOR_PRECEDENCE_H
     16 #define LLVM_CLANG_OPERATOR_PRECEDENCE_H
     17 
     18 #include "clang/Basic/TokenKinds.h"
     19 
     20 namespace clang {
     21 
     22 /// PrecedenceLevels - These are precedences for the binary/ternary
     23 /// operators in the C99 grammar.  These have been named to relate
     24 /// with the C99 grammar productions.  Low precedences numbers bind
     25 /// more weakly than high numbers.
     26 namespace prec {
     27   enum Level {
     28     Unknown         = 0,    // Not binary operator.
     29     Comma           = 1,    // ,
     30     Assignment      = 2,    // =, *=, /=, %=, +=, -=, <<=, >>=, &=, ^=, |=
     31     Conditional     = 3,    // ?
     32     LogicalOr       = 4,    // ||
     33     LogicalAnd      = 5,    // &&
     34     InclusiveOr     = 6,    // |
     35     ExclusiveOr     = 7,    // ^
     36     And             = 8,    // &
     37     Equality        = 9,    // ==, !=
     38     Relational      = 10,   //  >=, <=, >, <
     39     Shift           = 11,   // <<, >>
     40     Additive        = 12,   // -, +
     41     Multiplicative  = 13,   // *, /, %
     42     PointerToMember = 14    // .*, ->*
     43   };
     44 }
     45 
     46 /// \brief 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