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_BASIC_OPERATORPRECEDENCE_H
16 #define LLVM_CLANG_BASIC_OPERATORPRECEDENCE_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