mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
483 lines
12 KiB
ANTLR
483 lines
12 KiB
ANTLR
// Copyright 2020 Gonçalo Sá <goncalo.sa@consensys.net>
|
|
// Copyright 2016-2019 Federico Bond <federicobond@gmail.com>
|
|
// Licensed under the MIT license. See LICENSE file in the project root for details.
|
|
|
|
// This grammar is much less strict than what Solidity currently parses
|
|
// to allow this to pass with older versions of Solidity.
|
|
|
|
grammar Solidity;
|
|
|
|
sourceUnit
|
|
: (pragmaDirective | importDirective | structDefinition | enumDefinition | contractDefinition)* EOF ;
|
|
|
|
pragmaDirective
|
|
: 'pragma' pragmaName pragmaValue ';' ;
|
|
|
|
pragmaName
|
|
: identifier ;
|
|
|
|
pragmaValue
|
|
: version | expression ;
|
|
|
|
version
|
|
: versionConstraint versionConstraint? ;
|
|
|
|
versionConstraint
|
|
: versionOperator? VersionLiteral ;
|
|
|
|
versionOperator
|
|
: '^' | '~' | '>=' | '>' | '<' | '<=' | '=' ;
|
|
|
|
importDirective
|
|
: 'import' StringLiteralFragment ('as' identifier)? ';'
|
|
| 'import' ('*' | identifier) ('as' identifier)? 'from' StringLiteralFragment ';'
|
|
| 'import' '{' importDeclaration ( ',' importDeclaration )* '}' 'from' StringLiteralFragment ';' ;
|
|
|
|
importDeclaration
|
|
: identifier ('as' identifier)? ;
|
|
|
|
contractDefinition
|
|
: 'abstract'? ( 'contract' | 'interface' | 'library' ) identifier
|
|
( 'is' inheritanceSpecifier (',' inheritanceSpecifier )* )?
|
|
'{' contractPart* '}' ;
|
|
|
|
inheritanceSpecifier
|
|
: userDefinedTypeName ( '(' expressionList? ')' )? ;
|
|
|
|
contractPart
|
|
: stateVariableDeclaration
|
|
| usingForDeclaration
|
|
| structDefinition
|
|
| modifierDefinition
|
|
| functionDefinition
|
|
| eventDefinition
|
|
| enumDefinition ;
|
|
|
|
stateVariableDeclaration
|
|
: typeName
|
|
( PublicKeyword | InternalKeyword | PrivateKeyword | ConstantKeyword | ImmutableKeyword | overrideSpecifier )*
|
|
identifier ('=' expression)? ';' ;
|
|
|
|
overrideSpecifier : 'override' ( '(' userDefinedTypeName (',' userDefinedTypeName)* ')' )? ;
|
|
|
|
usingForDeclaration
|
|
: 'using' identifier 'for' ('*' | typeName) ';' ;
|
|
|
|
structDefinition
|
|
: 'struct' identifier
|
|
'{' ( variableDeclaration ';' (variableDeclaration ';')* )? '}' ;
|
|
|
|
modifierDefinition
|
|
: 'modifier' identifier parameterList? ( VirtualKeyword | overrideSpecifier )* ( ';' | block ) ;
|
|
|
|
functionDefinition
|
|
: functionDescriptor parameterList modifierList returnParameters? ( ';' | block ) ;
|
|
|
|
functionDescriptor
|
|
: 'function' ( identifier | ReceiveKeyword | FallbackKeyword )?
|
|
| ConstructorKeyword
|
|
| FallbackKeyword
|
|
| ReceiveKeyword ;
|
|
|
|
returnParameters
|
|
: 'returns' parameterList ;
|
|
|
|
modifierList
|
|
: ( modifierInvocation | stateMutability | ExternalKeyword
|
|
| PublicKeyword | InternalKeyword | PrivateKeyword | VirtualKeyword | overrideSpecifier )* ;
|
|
|
|
modifierInvocation
|
|
: identifier ( '(' expressionList? ')' )? ;
|
|
|
|
eventDefinition
|
|
: 'event' identifier eventParameterList AnonymousKeyword? ';' ;
|
|
|
|
enumDefinition
|
|
: 'enum' identifier '{' enumValue? (',' enumValue)* '}' ;
|
|
|
|
enumValue
|
|
: identifier ;
|
|
|
|
parameterList
|
|
: '(' ( parameter (',' parameter)* )? ')' ;
|
|
|
|
parameter
|
|
: typeName storageLocation? identifier? ;
|
|
|
|
eventParameterList
|
|
: '(' ( eventParameter (',' eventParameter)* )? ')' ;
|
|
|
|
eventParameter
|
|
: typeName IndexedKeyword? identifier? ;
|
|
|
|
variableDeclaration
|
|
: typeName storageLocation? identifier ;
|
|
|
|
typeName
|
|
: elementaryTypeName
|
|
| userDefinedTypeName
|
|
| mapping
|
|
| typeName '[' expression? ']'
|
|
| functionTypeName ;
|
|
|
|
userDefinedTypeName
|
|
: identifier ( '.' identifier )* ;
|
|
|
|
mapping
|
|
: 'mapping' '(' (elementaryTypeName | userDefinedTypeName) '=>' typeName ')' ;
|
|
|
|
functionTypeName
|
|
: 'function' parameterList modifierList returnParameters? ;
|
|
|
|
storageLocation
|
|
: 'memory' | 'storage' | 'calldata';
|
|
|
|
stateMutability
|
|
: PureKeyword | ConstantKeyword | ViewKeyword | PayableKeyword ;
|
|
|
|
block
|
|
: '{' statement* '}' ;
|
|
|
|
statement
|
|
: ifStatement
|
|
| tryStatement
|
|
| whileStatement
|
|
| forStatement
|
|
| block
|
|
| inlineAssemblyStatement
|
|
| doWhileStatement
|
|
| continueStatement
|
|
| breakStatement
|
|
| returnStatement
|
|
| throwStatement
|
|
| emitStatement
|
|
| simpleStatement ;
|
|
|
|
expressionStatement
|
|
: expression ';' ;
|
|
|
|
ifStatement
|
|
: 'if' '(' expression ')' statement ( 'else' statement )? ;
|
|
|
|
tryStatement : 'try' expression returnParameters? block catchClause+ ;
|
|
|
|
// In reality catch clauses still are not processed as below
|
|
// the identifier can only be a set string: "Error". But plans
|
|
// of the Solidity team include possible expansion so we'll
|
|
// leave this as is, befitting with the Solidity docs.
|
|
catchClause : 'catch' ( identifier? parameterList )? block ;
|
|
|
|
whileStatement
|
|
: 'while' '(' expression ')' statement ;
|
|
|
|
forStatement
|
|
: 'for' '(' ( simpleStatement | ';' ) ( expressionStatement | ';' ) expression? ')' statement ;
|
|
|
|
simpleStatement
|
|
: ( variableDeclarationStatement | expressionStatement ) ;
|
|
|
|
inlineAssemblyStatement
|
|
: 'assembly' StringLiteralFragment? assemblyBlock ;
|
|
|
|
doWhileStatement
|
|
: 'do' statement 'while' '(' expression ')' ';' ;
|
|
|
|
continueStatement
|
|
: 'continue' ';' ;
|
|
|
|
breakStatement
|
|
: 'break' ';' ;
|
|
|
|
returnStatement
|
|
: 'return' expression? ';' ;
|
|
|
|
// throw is no longer supported by latest Solidity.
|
|
throwStatement
|
|
: 'throw' ';' ;
|
|
|
|
emitStatement
|
|
: 'emit' functionCall ';' ;
|
|
|
|
// 'var' is no longer supported by latest Solidity.
|
|
variableDeclarationStatement
|
|
: ( 'var' identifierList | variableDeclaration | '(' variableDeclarationList ')' ) ( '=' expression )? ';';
|
|
|
|
variableDeclarationList
|
|
: variableDeclaration? (',' variableDeclaration? )* ;
|
|
|
|
identifierList
|
|
: '(' ( identifier? ',' )* identifier? ')' ;
|
|
|
|
elementaryTypeName
|
|
: 'address' PayableKeyword? | 'bool' | 'string' | 'var' | Int | Uint | 'byte' | Byte | Fixed | Ufixed ;
|
|
|
|
Int
|
|
: 'int' | 'int8' | 'int16' | 'int24' | 'int32' | 'int40' | 'int48' | 'int56' | 'int64' | 'int72' | 'int80' | 'int88' | 'int96' | 'int104' | 'int112' | 'int120' | 'int128' | 'int136' | 'int144' | 'int152' | 'int160' | 'int168' | 'int176' | 'int184' | 'int192' | 'int200' | 'int208' | 'int216' | 'int224' | 'int232' | 'int240' | 'int248' | 'int256' ;
|
|
|
|
Uint
|
|
: 'uint' | 'uint8' | 'uint16' | 'uint24' | 'uint32' | 'uint40' | 'uint48' | 'uint56' | 'uint64' | 'uint72' | 'uint80' | 'uint88' | 'uint96' | 'uint104' | 'uint112' | 'uint120' | 'uint128' | 'uint136' | 'uint144' | 'uint152' | 'uint160' | 'uint168' | 'uint176' | 'uint184' | 'uint192' | 'uint200' | 'uint208' | 'uint216' | 'uint224' | 'uint232' | 'uint240' | 'uint248' | 'uint256' ;
|
|
|
|
Byte
|
|
: 'bytes' | 'bytes1' | 'bytes2' | 'bytes3' | 'bytes4' | 'bytes5' | 'bytes6' | 'bytes7' | 'bytes8' | 'bytes9' | 'bytes10' | 'bytes11' | 'bytes12' | 'bytes13' | 'bytes14' | 'bytes15' | 'bytes16' | 'bytes17' | 'bytes18' | 'bytes19' | 'bytes20' | 'bytes21' | 'bytes22' | 'bytes23' | 'bytes24' | 'bytes25' | 'bytes26' | 'bytes27' | 'bytes28' | 'bytes29' | 'bytes30' | 'bytes31' | 'bytes32' ;
|
|
|
|
Fixed
|
|
: 'fixed' | ( 'fixed' [0-9]+ 'x' [0-9]+ ) ;
|
|
|
|
Ufixed
|
|
: 'ufixed' | ( 'ufixed' [0-9]+ 'x' [0-9]+ ) ;
|
|
|
|
expression
|
|
: expression ('++' | '--')
|
|
| 'new' typeName
|
|
| expression '[' expression? ']'
|
|
| expression '[' expression? ':' expression? ']'
|
|
| expression '.' identifier
|
|
| expression '{' nameValueList '}'
|
|
| expression '(' functionCallArguments ')'
|
|
| PayableKeyword '(' expression ')'
|
|
| '(' expression ')'
|
|
| ('++' | '--') expression
|
|
| ('+' | '-') expression
|
|
| ('after' | 'delete') expression
|
|
| '!' expression
|
|
| '~' expression
|
|
| expression '**' expression
|
|
| expression ('*' | '/' | '%') expression
|
|
| expression ('+' | '-') expression
|
|
| expression ('<<' | '>>') expression
|
|
| expression '&' expression
|
|
| expression '^' expression
|
|
| expression '|' expression
|
|
| expression ('<' | '>' | '<=' | '>=') expression
|
|
| expression ('==' | '!=') expression
|
|
| expression '&&' expression
|
|
| expression '||' expression
|
|
| expression '?' expression ':' expression
|
|
| expression ('=' | '|=' | '^=' | '&=' | '<<=' | '>>=' | '+=' | '-=' | '*=' | '/=' | '%=') expression
|
|
| primaryExpression ;
|
|
|
|
primaryExpression
|
|
: BooleanLiteral
|
|
| numberLiteral
|
|
| hexLiteral
|
|
| stringLiteral
|
|
| identifier ('[' ']')?
|
|
| TypeKeyword
|
|
| tupleExpression
|
|
| typeNameExpression ('[' ']')? ;
|
|
|
|
expressionList
|
|
: expression (',' expression)* ;
|
|
|
|
nameValueList
|
|
: nameValue (',' nameValue)* ','? ;
|
|
|
|
nameValue
|
|
: identifier ':' expression ;
|
|
|
|
functionCallArguments
|
|
: '{' nameValueList? '}'
|
|
| expressionList? ;
|
|
|
|
functionCall
|
|
: expression '(' functionCallArguments ')' ;
|
|
|
|
tupleExpression
|
|
: '(' ( expression? ( ',' expression? )* ) ')'
|
|
| '[' ( expression ( ',' expression )* )? ']' ;
|
|
|
|
typeNameExpression
|
|
: elementaryTypeName
|
|
| userDefinedTypeName ;
|
|
|
|
assemblyItem
|
|
: identifier
|
|
| assemblyBlock
|
|
| assemblyExpression
|
|
| assemblyLocalDefinition
|
|
| assemblyAssignment
|
|
| assemblyStackAssignment
|
|
| labelDefinition
|
|
| assemblySwitch
|
|
| assemblyFunctionDefinition
|
|
| assemblyFor
|
|
| assemblyIf
|
|
| BreakKeyword
|
|
| ContinueKeyword
|
|
| LeaveKeyword
|
|
| subAssembly
|
|
| numberLiteral
|
|
| stringLiteral
|
|
| hexLiteral ;
|
|
|
|
assemblyBlock
|
|
: '{' assemblyItem* '}' ;
|
|
|
|
assemblyExpression
|
|
: assemblyCall | assemblyLiteral ;
|
|
|
|
assemblyCall
|
|
: ( 'return' | 'address' | 'byte' | identifier ) ( '(' assemblyExpression? ( ',' assemblyExpression )* ')' )? ;
|
|
|
|
assemblyLocalDefinition
|
|
: 'let' assemblyIdentifierList ( ':=' assemblyExpression )? ;
|
|
|
|
assemblyAssignment
|
|
: assemblyIdentifierList ':=' assemblyExpression ;
|
|
|
|
assemblyIdentifierList
|
|
: identifier ( ',' identifier )* ;
|
|
|
|
assemblyStackAssignment
|
|
: '=:' identifier ;
|
|
|
|
labelDefinition
|
|
: identifier ':' ;
|
|
|
|
assemblySwitch
|
|
: 'switch' assemblyExpression assemblyCase* ;
|
|
|
|
assemblyCase
|
|
: 'case' assemblyLiteral assemblyType? assemblyBlock
|
|
| 'default' assemblyBlock ;
|
|
|
|
assemblyFunctionDefinition
|
|
: 'function' identifier '(' assemblyTypedVariableList? ')'
|
|
assemblyFunctionReturns? assemblyBlock ;
|
|
|
|
assemblyFunctionReturns
|
|
: ( '-' '>' assemblyTypedVariableList ) ;
|
|
|
|
assemblyFor
|
|
: 'for' assemblyBlock assemblyExpression assemblyBlock assemblyBlock ;
|
|
|
|
assemblyIf
|
|
: 'if' assemblyExpression assemblyBlock ;
|
|
|
|
assemblyLiteral
|
|
: ( stringLiteral | DecimalNumber | HexNumber | hexLiteral | BooleanLiteral ) assemblyType? ;
|
|
|
|
assemblyTypedVariableList
|
|
: identifier assemblyType? ( ',' assemblyTypedVariableList )? ;
|
|
|
|
assemblyType
|
|
: ':' identifier ;
|
|
|
|
subAssembly
|
|
: 'assembly' identifier assemblyBlock ;
|
|
|
|
numberLiteral
|
|
: (DecimalNumber | HexNumber) NumberUnit? ;
|
|
|
|
identifier
|
|
: ('from' | 'calldata' | 'address' | Identifier) ;
|
|
|
|
BooleanLiteral
|
|
: 'true' | 'false' ;
|
|
|
|
DecimalNumber
|
|
: ( DecimalDigits | (DecimalDigits? '.' DecimalDigits) ) ( [eE] '-'? DecimalDigits )? ;
|
|
|
|
fragment
|
|
DecimalDigits
|
|
: [0-9] ( '_'? [0-9] )* ;
|
|
|
|
HexNumber
|
|
: '0' [xX] HexDigits ;
|
|
|
|
fragment
|
|
HexDigits
|
|
: HexCharacter ( '_'? HexCharacter )* ;
|
|
|
|
NumberUnit
|
|
: 'wei' | 'szabo' | 'finney' | 'ether'
|
|
| 'seconds' | 'minutes' | 'hours' | 'days' | 'weeks' | 'years' ;
|
|
|
|
HexLiteralFragment
|
|
: 'hex' (('"' HexDigits? '"') | ('\'' HexDigits? '\'')) ;
|
|
|
|
hexLiteral : HexLiteralFragment+ ;
|
|
|
|
fragment
|
|
HexPair
|
|
: HexCharacter HexCharacter ;
|
|
|
|
fragment
|
|
HexCharacter
|
|
: [0-9A-Fa-f] ;
|
|
|
|
ReservedKeyword
|
|
: 'after'
|
|
| 'case'
|
|
| 'default'
|
|
| 'final'
|
|
| 'in'
|
|
| 'inline'
|
|
| 'let'
|
|
| 'match'
|
|
| 'null'
|
|
| 'of'
|
|
| 'relocatable'
|
|
| 'static'
|
|
| 'switch'
|
|
| 'typeof' ;
|
|
|
|
AnonymousKeyword : 'anonymous' ;
|
|
BreakKeyword : 'break' ;
|
|
ConstantKeyword : 'constant' ;
|
|
ImmutableKeyword : 'immutable' ;
|
|
ContinueKeyword : 'continue' ;
|
|
LeaveKeyword : 'leave' ;
|
|
ExternalKeyword : 'external' ;
|
|
IndexedKeyword : 'indexed' ;
|
|
InternalKeyword : 'internal' ;
|
|
PayableKeyword : 'payable' ;
|
|
PrivateKeyword : 'private' ;
|
|
PublicKeyword : 'public' ;
|
|
VirtualKeyword : 'virtual' ;
|
|
PureKeyword : 'pure' ;
|
|
TypeKeyword : 'type' ;
|
|
ViewKeyword : 'view' ;
|
|
|
|
ConstructorKeyword : 'constructor' ;
|
|
FallbackKeyword : 'fallback' ;
|
|
ReceiveKeyword : 'receive' ;
|
|
|
|
Identifier
|
|
: IdentifierStart IdentifierPart* ;
|
|
|
|
fragment
|
|
IdentifierStart
|
|
: [a-zA-Z$_] ;
|
|
|
|
fragment
|
|
IdentifierPart
|
|
: [a-zA-Z0-9$_] ;
|
|
|
|
stringLiteral
|
|
: StringLiteralFragment+ ;
|
|
|
|
StringLiteralFragment
|
|
: '"' DoubleQuotedStringCharacter* '"'
|
|
| '\'' SingleQuotedStringCharacter* '\'' ;
|
|
|
|
fragment
|
|
DoubleQuotedStringCharacter
|
|
: ~["\r\n\\] | ('\\' .) ;
|
|
|
|
fragment
|
|
SingleQuotedStringCharacter
|
|
: ~['\r\n\\] | ('\\' .) ;
|
|
|
|
VersionLiteral
|
|
: [0-9]+ '.' [0-9]+ ('.' [0-9]+)? ;
|
|
|
|
WS
|
|
: [ \t\r\n\u000C]+ -> skip ;
|
|
|
|
COMMENT
|
|
: '/*' .*? '*/' -> channel(HIDDEN) ;
|
|
|
|
LINE_COMMENT
|
|
: '//' ~[\r\n]* -> channel(HIDDEN) ;
|