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