//===--- OperatorPrecedence.cpp ---------------------------------*- C++ -*-===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// /// /// \file /// \brief Defines and computes precedence levels for binary/ternary operators. /// //===----------------------------------------------------------------------===// #include "clang/Basic/OperatorPrecedence.h" namespace clang { prec::Level getBinOpPrecedence(tok::TokenKind Kind, bool GreaterThanIsOperator, bool CPlusPlus11) { switch (Kind) { case tok::greater: // C++ [temp.names]p3: // [...] When parsing a template-argument-list, the first // non-nested > is taken as the ending delimiter rather than a // greater-than operator. [...] if (GreaterThanIsOperator) return prec::Relational; return prec::Unknown; case tok::greatergreater: // C++11 [temp.names]p3: // // [...] Similarly, the first non-nested >> is treated as two // consecutive but distinct > tokens, the first of which is // taken as the end of the template-argument-list and completes // the template-id. [...] if (GreaterThanIsOperator || !CPlusPlus11) return prec::Shift; return prec::Unknown; default: return prec::Unknown; case tok::comma: return prec::Comma; case tok::equal: case tok::starequal: case tok::slashequal: case tok::percentequal: case tok::plusequal: case tok::minusequal: case tok::lesslessequal: case tok::greatergreaterequal: case tok::ampequal: case tok::caretequal: case tok::pipeequal: return prec::Assignment; case tok::question: return prec::Conditional; case tok::pipepipe: return prec::LogicalOr; case tok::caretcaret: case tok::ampamp: return prec::LogicalAnd; case tok::pipe: return prec::InclusiveOr; case tok::caret: return prec::ExclusiveOr; case tok::amp: return prec::And; case tok::exclaimequal: case tok::equalequal: return prec::Equality; case tok::lessequal: case tok::less: case tok::greaterequal: return prec::Relational; case tok::spaceship: return prec::Spaceship; case tok::lessless: return prec::Shift; case tok::plus: case tok::minus: return prec::Additive; case tok::percent: case tok::slash: case tok::star: return prec::Multiplicative; case tok::periodstar: case tok::arrowstar: return prec::PointerToMember; } } } // namespace clang |