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
20namespace 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.
26namespace 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.
47prec::Level getBinOpPrecedence(tok::TokenKind Kind, bool GreaterThanIsOperator,
48                               bool CPlusPlus11);
49
50}  // end namespace clang
51
52#endif  // LLVM_CLANG_OPERATOR_PRECEDENCE_H
53