clang
18.0.0git
lib
Basic
OperatorPrecedence.cpp
Go to the documentation of this file.
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//===--- OperatorPrecedence.cpp ---------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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///
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/// \file
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/// Defines and computes precedence levels for binary/ternary operators.
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///
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//===----------------------------------------------------------------------===//
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#include "
clang/Basic/OperatorPrecedence.h
"
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namespace
clang
{
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prec::Level
getBinOpPrecedence
(
tok::TokenKind
Kind,
bool
GreaterThanIsOperator,
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bool
CPlusPlus11
) {
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switch
(Kind) {
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case
tok::greater:
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// C++ [temp.names]p3:
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// [...] When parsing a template-argument-list, the first
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// non-nested > is taken as the ending delimiter rather than a
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// greater-than operator. [...]
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if
(GreaterThanIsOperator)
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return
prec::Relational
;
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return
prec::Unknown
;
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case
tok::greatergreater:
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// C++11 [temp.names]p3:
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//
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// [...] Similarly, the first non-nested >> is treated as two
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// consecutive but distinct > tokens, the first of which is
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// taken as the end of the template-argument-list and completes
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// the template-id. [...]
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if
(GreaterThanIsOperator || !
CPlusPlus11
)
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return
prec::Shift
;
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return
prec::Unknown
;
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default
:
return
prec::Unknown
;
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case
tok::comma:
return
prec::Comma
;
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case
tok::equal:
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case
tok::starequal:
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case
tok::slashequal:
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case
tok::percentequal:
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case
tok::plusequal:
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case
tok::minusequal:
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case
tok::lesslessequal:
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case
tok::greatergreaterequal:
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case
tok::ampequal:
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case
tok::caretequal:
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case
tok::pipeequal:
return
prec::Assignment
;
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case
tok::question:
return
prec::Conditional
;
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case
tok::pipepipe:
return
prec::LogicalOr
;
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case
tok::caretcaret:
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case
tok::ampamp:
return
prec::LogicalAnd
;
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case
tok::pipe:
return
prec::InclusiveOr
;
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case
tok::caret:
return
prec::ExclusiveOr
;
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case
tok::amp:
return
prec::And
;
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case
tok::exclaimequal:
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case
tok::equalequal:
return
prec::Equality
;
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case
tok::lessequal:
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case
tok::less:
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case
tok::greaterequal:
return
prec::Relational
;
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case
tok::spaceship:
return
prec::Spaceship
;
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case
tok::lessless:
return
prec::Shift
;
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case
tok::plus:
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case
tok::minus:
return
prec::Additive
;
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case
tok::percent:
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case
tok::slash:
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case
tok::star:
return
prec::Multiplicative
;
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case
tok::periodstar:
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case
tok::arrowstar:
return
prec::PointerToMember
;
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}
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}
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}
// namespace clang
OperatorPrecedence.h
Defines and computes precedence levels for binary/ternary operators.
clang::prec::Level
Level
Definition:
OperatorPrecedence.h:26
clang::prec::Relational
@ Relational
Definition:
OperatorPrecedence.h:37
clang::prec::Multiplicative
@ Multiplicative
Definition:
OperatorPrecedence.h:41
clang::prec::Unknown
@ Unknown
Definition:
OperatorPrecedence.h:27
clang::prec::LogicalOr
@ LogicalOr
Definition:
OperatorPrecedence.h:31
clang::prec::PointerToMember
@ PointerToMember
Definition:
OperatorPrecedence.h:42
clang::prec::Additive
@ Additive
Definition:
OperatorPrecedence.h:40
clang::prec::LogicalAnd
@ LogicalAnd
Definition:
OperatorPrecedence.h:32
clang::prec::Comma
@ Comma
Definition:
OperatorPrecedence.h:28
clang::prec::Assignment
@ Assignment
Definition:
OperatorPrecedence.h:29
clang::prec::And
@ And
Definition:
OperatorPrecedence.h:35
clang::prec::ExclusiveOr
@ ExclusiveOr
Definition:
OperatorPrecedence.h:34
clang::prec::Spaceship
@ Spaceship
Definition:
OperatorPrecedence.h:38
clang::prec::Conditional
@ Conditional
Definition:
OperatorPrecedence.h:30
clang::prec::Shift
@ Shift
Definition:
OperatorPrecedence.h:39
clang::prec::Equality
@ Equality
Definition:
OperatorPrecedence.h:36
clang::prec::InclusiveOr
@ InclusiveOr
Definition:
OperatorPrecedence.h:33
clang::tok::TokenKind
TokenKind
Provides a simple uniform namespace for tokens from all C languages.
Definition:
TokenKinds.h:25
clang
Definition:
CalledOnceCheck.h:17
clang::CPlusPlus11
@ CPlusPlus11
Definition:
LangStandard.h:54
clang::getBinOpPrecedence
prec::Level getBinOpPrecedence(tok::TokenKind Kind, bool GreaterThanIsOperator, bool CPlusPlus11)
Return the precedence of the specified binary operator token.
Definition:
OperatorPrecedence.cpp:17
Generated on Fri Sep 29 2023 23:43:40 for clang by
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