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CPP14.g4
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CPP14.g4
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/*******************************************************************************
* The MIT License (MIT)
*
* Copyright (c) 2015 Camilo Sanchez (Camiloasc1)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
******************************************************************************/
/*******************************************************************************
* C++14 Grammar for ANTLR v4
*
* Based on n4140 draft paper
* https://github.com/cplusplus/draft/blob/master/papers/n4140.pdf
* and
* http://www.nongnu.org/hcb/
*
* Possible Issues:
*
* Input must avoid conditional compilation blocks (this grammar ignores any preprocessor directive)
* GCC extensions not yet supported (do not try to parse the preprocessor output)
* Right angle bracket (C++11) - Solution '>>' and '>>=' are not tokens, only '>'
* Lexer issue with pure-specifier rule ('0' token) - Solution in embedded code
* Change it to match the target language you want in line 1097 or verify inside your listeners/visitors
* Java:
if($val.text.compareTo("0")!=0) throw new InputMismatchException(this);
* JavaScript:
* Python2:
* Python3:
* C#:
******************************************************************************/
grammar CPP14;
/*Basic concepts*/
translationunit
:
declarationseq? EOF
;
/*Expressions*/
primaryexpression
:
literal
| This
| '(' expression ')'
| idexpression
| lambdaexpression
;
idexpression
:
unqualifiedid
| qualifiedid
;
unqualifiedid
:
Identifier
| operatorfunctionid
| conversionfunctionid
| literaloperatorid
| '~' classname
| '~' decltypespecifier
| templateid
;
qualifiedid
:
nestednamespecifier Template? unqualifiedid
;
nestednamespecifier
:
'::'
| thetypename '::'
| namespacename '::'
| decltypespecifier '::'
| nestednamespecifier Identifier '::'
| nestednamespecifier Template? simpletemplateid '::'
;
lambdaexpression
:
lambdaintroducer lambdadeclarator? compoundstatement
;
lambdaintroducer
:
'[' lambdacapture? ']'
;
lambdacapture
:
capturedefault
| capturelist
| capturedefault ',' capturelist
;
capturedefault
:
'&'
| '='
;
capturelist
:
capture '...'?
| capturelist ',' capture '...'?
;
capture
:
simplecapture
| initcapture
;
simplecapture
:
Identifier
| '&' Identifier
| This
;
initcapture
:
Identifier initializer
| '&' Identifier initializer
;
lambdadeclarator
:
'(' parameterdeclarationclause ')' Mutable? exceptionspecification?
attributespecifierseq? trailingreturntype?
;
postfixexpression
:
primaryexpression
| postfixexpression '[' expression ']'
| postfixexpression '[' bracedinitlist ']'
| postfixexpression '(' expressionlist? ')'
| simpletypespecifier '(' expressionlist? ')'
| typenamespecifier '(' expressionlist? ')'
| simpletypespecifier bracedinitlist
| typenamespecifier bracedinitlist
| postfixexpression '.' Template? idexpression
| postfixexpression '->' Template? idexpression
| postfixexpression '.' pseudodestructorname
| postfixexpression '->' pseudodestructorname
| postfixexpression '++'
| postfixexpression '--'
| Dynamic_cast '<' thetypeid '>' '(' expression ')'
| Static_cast '<' thetypeid '>' '(' expression ')'
| Reinterpret_cast '<' thetypeid '>' '(' expression ')'
| Const_cast '<' thetypeid '>' '(' expression ')'
| typeidofthetypeid '(' expression ')'
| typeidofthetypeid '(' thetypeid ')'
;
/*
add a middle layer to eliminate duplicated function declarations
*/
typeidofexpr
:
Typeid
;
typeidofthetypeid
:
Typeid
;
expressionlist
:
initializerlist
;
pseudodestructorname
:
nestednamespecifier? thetypename '::' '~' thetypename
| nestednamespecifier Template simpletemplateid '::' '~' thetypename
| nestednamespecifier? '~' thetypename
| '~' decltypespecifier
;
unaryexpression
:
postfixexpression
| '++' castexpression
| '--' castexpression
| unaryoperator castexpression
| Sizeof unaryexpression
| Sizeof '(' thetypeid ')'
| Sizeof '...' '(' Identifier ')'
| Alignof '(' thetypeid ')'
| noexceptexpression
| newexpression
| deleteexpression
;
unaryoperator
:
'|'
| '*'
| '&'
| '+'
| '!'
| '~'
| '-'
;
newexpression
:
'::'? New newplacement? newtypeid newinitializer?
| '::'? New newplacement? '(' thetypeid ')' newinitializer?
;
newplacement
:
'(' expressionlist ')'
;
newtypeid
:
typespecifierseq newdeclarator?
;
newdeclarator
:
ptroperator newdeclarator?
| noptrnewdeclarator
;
noptrnewdeclarator
:
'[' expression ']' attributespecifierseq?
| noptrnewdeclarator '[' constantexpression ']' attributespecifierseq?
;
newinitializer
:
'(' expressionlist? ')'
| bracedinitlist
;
deleteexpression
:
'::'? Delete castexpression
| '::'? Delete '[' ']' castexpression
;
noexceptexpression
:
Noexcept '(' expression ')'
;
castexpression
:
unaryexpression
| '(' thetypeid ')' castexpression
;
pmexpression
:
castexpression
| pmexpression '.*' castexpression
| pmexpression '->*' castexpression
;
multiplicativeexpression
:
pmexpression
| multiplicativeexpression '*' pmexpression
| multiplicativeexpression '/' pmexpression
| multiplicativeexpression '%' pmexpression
;
additiveexpression
:
multiplicativeexpression
| additiveexpression '+' multiplicativeexpression
| additiveexpression '-' multiplicativeexpression
;
shiftexpression
:
additiveexpression
| shiftexpression '<<' additiveexpression
| shiftexpression rightShift additiveexpression
;
relationalexpression
:
shiftexpression
| relationalexpression '<' shiftexpression
| relationalexpression '>' shiftexpression
| relationalexpression '<=' shiftexpression
| relationalexpression '>=' shiftexpression
;
equalityexpression
:
relationalexpression
| equalityexpression '==' relationalexpression
| equalityexpression '!=' relationalexpression
;
andexpression
:
equalityexpression
| andexpression '&' equalityexpression
;
exclusiveorexpression
:
andexpression
| exclusiveorexpression '^' andexpression
;
inclusiveorexpression
:
exclusiveorexpression
| inclusiveorexpression '|' exclusiveorexpression
;
logicalandexpression
:
inclusiveorexpression
| logicalandexpression '&&' inclusiveorexpression
;
logicalorexpression
:
logicalandexpression
| logicalorexpression '||' logicalandexpression
;
conditionalexpression
:
logicalorexpression
| logicalorexpression '?' expression ':' assignmentexpression
;
assignmentexpression
:
conditionalexpression
| logicalorexpression assignmentoperator initializerclause
| throwexpression
;
assignmentoperator
:
'='
| '*='
| '/='
| '%='
| '+='
| '-='
| rightShiftAssign
| '<<='
| '&='
| '^='
| '|='
;
expression
:
assignmentexpression
| expression ',' assignmentexpression
;
constantexpression
:
conditionalexpression
;
/*Statements*/
statement
:
labeledstatement
| attributespecifierseq? expressionstatement
| attributespecifierseq? compoundstatement
| attributespecifierseq? selectionstatement
| attributespecifierseq? iterationstatement
| attributespecifierseq? jumpstatement
| declarationstatement
| attributespecifierseq? tryblock
;
labeledstatement
:
attributespecifierseq? Identifier ':' statement
| attributespecifierseq? Case constantexpression ':' statement
| attributespecifierseq? Default ':' statement
;
expressionstatement
:
expression? ';'
;
compoundstatement
:
'{' statementseq? '}'
;
statementseq
:
statement
| statementseq statement
;
selectionstatement
:
If '(' condition ')' statement
| If '(' condition ')' statement Else statement
| Switch '(' condition ')' statement
;
condition
:
expression
| attributespecifierseq? declspecifierseq declarator '=' initializerclause
| attributespecifierseq? declspecifierseq declarator bracedinitlist
;
iterationstatement
:
While '(' condition ')' statement
| Do statement While '(' expression ')' ';'
| For '(' forinitstatement condition? ';' expression? ')' statement
| For '(' forrangedeclaration ':' forrangeinitializer ')' statement
;
forinitstatement
:
expressionstatement
| simpledeclaration
;
forrangedeclaration
:
attributespecifierseq? declspecifierseq declarator
;
forrangeinitializer
:
expression
| bracedinitlist
;
jumpstatement
:
Break ';'
| Continue ';'
| Return expression? ';'
| Return bracedinitlist ';'
| Goto Identifier ';'
;
declarationstatement
:
blockdeclaration
;
/*Declarations*/
declarationseq
:
declaration
| declarationseq declaration
;
declaration
:
blockdeclaration
| functiondefinition
| templatedeclaration
| explicitinstantiation
| explicitspecialization
| linkagespecification
| namespacedefinition
| emptydeclaration
| attributedeclaration
;
blockdeclaration
:
simpledeclaration
| asmdefinition
| namespacealiasdefinition
| usingdeclaration
| usingdirective
| static_assertdeclaration
| aliasdeclaration
| opaqueenumdeclaration
;
aliasdeclaration
:
Using Identifier attributespecifierseq? '=' thetypeid ';'
;
simpledeclaration
:
declspecifierseq? initdeclaratorlist? ';'
| attributespecifierseq declspecifierseq? initdeclaratorlist ';'
;
static_assertdeclaration
:
Static_assert '(' constantexpression ',' Stringliteral ')' ';'
;
emptydeclaration
:
';'
;
attributedeclaration
:
attributespecifierseq ';'
;
declspecifier
:
storageclassspecifier
| typespecifier
| functionspecifier
| Friend
| Typedef
| Constexpr
;
declspecifierseq
:
declspecifier attributespecifierseq?
| declspecifier declspecifierseq
;
storageclassspecifier
:
Register
| Static
| Thread_local
| Extern
| Mutable
;
functionspecifier
:
Inline
| Virtual
| Explicit
;
typedefname
:
Identifier
;
typespecifier
:
trailingtypespecifier
| classspecifier
| enumspecifier
;
trailingtypespecifier
:
simpletypespecifier
| elaboratedtypespecifier
| typenamespecifier
| cvqualifier
;
typespecifierseq
:
typespecifier attributespecifierseq?
| typespecifier typespecifierseq
;
trailingtypespecifierseq
:
trailingtypespecifier attributespecifierseq?
| trailingtypespecifier trailingtypespecifierseq
;
simpletypespecifier
:
nestednamespecifier? thetypename
| nestednamespecifier Template simpletemplateid
| Char
| Char16
| Char32
| Wchar
| Bool
| Short
| Int
| Long
| Signed
| Unsigned
| Float
| Double
| Void
| Auto
| decltypespecifier
;
thetypename
:
classname
| enumname
| typedefname
| simpletemplateid
;
decltypespecifier
:
Decltype '(' expression ')'
| Decltype '(' Auto ')'
;
elaboratedtypespecifier
:
classkey attributespecifierseq? nestednamespecifier? Identifier
| classkey simpletemplateid
| classkey nestednamespecifier Template? simpletemplateid
| Enum nestednamespecifier? Identifier
;
enumname
:
Identifier
;
enumspecifier
:
enumhead '{' enumeratorlist? '}'
| enumhead '{' enumeratorlist ',' '}'
;
enumhead
:
enumkey attributespecifierseq? Identifier? enumbase?
| enumkey attributespecifierseq? nestednamespecifier Identifier enumbase?
;
opaqueenumdeclaration
:
enumkey attributespecifierseq? Identifier enumbase? ';'
;
enumkey
:
Enum
| Enum Class
| Enum Struct
;
enumbase
:
':' typespecifierseq
;
enumeratorlist
:
enumeratordefinition
| enumeratorlist ',' enumeratordefinition
;
enumeratordefinition
:
enumerator
| enumerator '=' constantexpression
;
enumerator
:
Identifier
;
namespacename
:
originalnamespacename
| namespacealias
;
originalnamespacename
:
Identifier
;
namespacedefinition
:
namednamespacedefinition
| unnamednamespacedefinition
;
namednamespacedefinition
:
originalnamespacedefinition
| extensionnamespacedefinition
;
originalnamespacedefinition
:
Inline? Namespace Identifier '{' namespacebody '}'
;
extensionnamespacedefinition
:
Inline? Namespace originalnamespacename '{' namespacebody '}'
;
unnamednamespacedefinition
:
Inline? Namespace '{' namespacebody '}'
;
namespacebody
:
declarationseq?
;
namespacealias
:
Identifier
;
namespacealiasdefinition
:
Namespace Identifier '=' qualifiednamespacespecifier ';'
;
qualifiednamespacespecifier
:
nestednamespecifier? namespacename
;
usingdeclaration
:
Using Typename? nestednamespecifier unqualifiedid ';'
| Using '::' unqualifiedid ';'
;
usingdirective
:
attributespecifierseq? Using Namespace nestednamespecifier? namespacename ';'
;
asmdefinition
:
Asm '(' Stringliteral ')' ';'
;
linkagespecification
:
Extern Stringliteral '{' declarationseq? '}'
| Extern Stringliteral declaration
;
attributespecifierseq
:
attributespecifier
| attributespecifierseq attributespecifier
;
attributespecifier
:
'[' '[' attributelist ']' ']'
| alignmentspecifier
;
alignmentspecifier
:
Alignas '(' thetypeid '...'? ')'
| Alignas '(' constantexpression '...'? ')'
;
attributelist
:
attribute?
| attributelist ',' attribute?
| attribute '...'
| attributelist ',' attribute '...'
;
attribute
:
attributetoken attributeargumentclause?
;
attributetoken
:
Identifier
| attributescopedtoken
;
attributescopedtoken
:
attributenamespace '::' Identifier
;
attributenamespace
:
Identifier
;
attributeargumentclause
:
'(' balancedtokenseq ')'
;
balancedtokenseq
:
balancedtoken?
| balancedtokenseq balancedtoken
;
balancedtoken
:
'(' balancedtokenseq ')'
| '[' balancedtokenseq ']'
| '{' balancedtokenseq '}'
/*any token other than a parenthesis , a bracket , or a brace*/
;
/*Declarators*/
initdeclaratorlist
:
initdeclarator
| initdeclaratorlist ',' initdeclarator
;
initdeclarator
:
declarator initializer?
;
declarator
:
ptrdeclarator
| noptrdeclarator parametersandqualifiers trailingreturntype
;
ptrdeclarator
:
noptrdeclarator
| ptroperator ptrdeclarator
;
noptrdeclarator
:
declaratorid attributespecifierseq?
| noptrdeclarator parametersandqualifiers
| noptrdeclarator '[' constantexpression? ']' attributespecifierseq?
| '(' ptrdeclarator ')'
;
parametersandqualifiers
:
'(' parameterdeclarationclause ')' cvqualifierseq? refqualifier?
exceptionspecification? attributespecifierseq?
;
trailingreturntype
:
'->' trailingtypespecifierseq abstractdeclarator?
;
ptroperator
:
'*' attributespecifierseq? cvqualifierseq?
| '&' attributespecifierseq?
| '&&' attributespecifierseq?
| nestednamespecifier '*' attributespecifierseq? cvqualifierseq?
;
cvqualifierseq
:
cvqualifier cvqualifierseq?
;
cvqualifier
:
Const
| Volatile
;
refqualifier
:
'&'
| '&&'
;
declaratorid
:
'...'? idexpression
;
thetypeid
:
typespecifierseq abstractdeclarator?
;
abstractdeclarator
:
ptrabstractdeclarator
| noptrabstractdeclarator? parametersandqualifiers trailingreturntype
| abstractpackdeclarator
;
ptrabstractdeclarator
:
noptrabstractdeclarator
| ptroperator ptrabstractdeclarator?
;
noptrabstractdeclarator
:
noptrabstractdeclarator parametersandqualifiers
| parametersandqualifiers
| noptrabstractdeclarator '[' constantexpression? ']' attributespecifierseq?
| '[' constantexpression? ']' attributespecifierseq?
| '(' ptrabstractdeclarator ')'
;
abstractpackdeclarator
:
noptrabstractpackdeclarator
| ptroperator abstractpackdeclarator
;
noptrabstractpackdeclarator
:
noptrabstractpackdeclarator parametersandqualifiers
| noptrabstractpackdeclarator '[' constantexpression? ']'
attributespecifierseq?
| '...'
;
parameterdeclarationclause
:
parameterdeclarationlist? '...'?
| parameterdeclarationlist ',' '...'
;
parameterdeclarationlist
:
parameterdeclaration
| parameterdeclarationlist ',' parameterdeclaration
;
parameterdeclaration
:
attributespecifierseq? declspecifierseq declarator
| attributespecifierseq? declspecifierseq declarator '=' initializerclause
| attributespecifierseq? declspecifierseq abstractdeclarator?
| attributespecifierseq? declspecifierseq abstractdeclarator? '='
initializerclause
;
functiondefinition
:
attributespecifierseq? declspecifierseq? declarator virtspecifierseq?
functionbody
;
functionbody
:
ctorinitializer? compoundstatement
| functiontryblock
| '=' Default ';'
| '=' Delete ';'
;
initializer
:
braceorequalinitializer
| '(' expressionlist ')'
;
braceorequalinitializer