mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
157 lines
7.5 KiB
Plaintext
157 lines
7.5 KiB
Plaintext
SourceUnit = (PragmaDirective | ImportDirective | ContractDefinition)*
|
||
|
||
// Pragma actually parses anything up to the trailing ';' to be fully forward-compatible.
|
||
PragmaDirective = 'pragma' Identifier ([^;]+) ';'
|
||
|
||
ImportDirective = 'import' StringLiteral ('as' Identifier)? ';'
|
||
| 'import' ('*' | Identifier) ('as' Identifier)? 'from' StringLiteral ';'
|
||
| 'import' '{' Identifier ('as' Identifier)? ( ',' Identifier ('as' Identifier)? )* '}' 'from' StringLiteral ';'
|
||
|
||
ContractDefinition = ( 'contract' | 'library' | 'interface' ) Identifier
|
||
( 'is' InheritanceSpecifier (',' InheritanceSpecifier )* )?
|
||
'{' ContractPart* '}'
|
||
|
||
ContractPart = StateVariableDeclaration | UsingForDeclaration
|
||
| StructDefinition | ModifierDefinition | FunctionDefinition | EventDefinition | EnumDefinition
|
||
|
||
InheritanceSpecifier = UserDefinedTypeName ( '(' Expression ( ',' Expression )* ')' )?
|
||
|
||
StateVariableDeclaration = TypeName ( 'public' | 'internal' | 'private' | 'constant' )? Identifier ('=' Expression)? ';'
|
||
UsingForDeclaration = 'using' Identifier 'for' ('*' | TypeName) ';'
|
||
StructDefinition = 'struct' Identifier '{'
|
||
( VariableDeclaration ';' (VariableDeclaration ';')* )? '}'
|
||
|
||
ModifierDefinition = 'modifier' Identifier ParameterList? Block
|
||
ModifierInvocation = Identifier ( '(' ExpressionList? ')' )?
|
||
|
||
FunctionDefinition = 'function' Identifier? ParameterList
|
||
( ModifierInvocation | StateMutability | 'external' | 'public' | 'internal' | 'private' )*
|
||
( 'returns' ParameterList )? ( ';' | Block )
|
||
EventDefinition = 'event' Identifier IndexedParameterList 'anonymous'? ';'
|
||
|
||
EnumValue = Identifier
|
||
EnumDefinition = 'enum' Identifier '{' EnumValue? (',' EnumValue)* '}'
|
||
|
||
IndexedParameterList = '(' ( TypeName 'indexed'? Identifier? (',' TypeName 'indexed'? Identifier?)* )? ')'
|
||
ParameterList = '(' ( TypeName Identifier? (',' TypeName Identifier?)* )? ')'
|
||
TypeNameList = '(' ( TypeName (',' TypeName )* )? ')'
|
||
|
||
// semantic restriction: mappings and structs (recursively) containing mappings
|
||
// are not allowed in argument lists
|
||
VariableDeclaration = TypeName StorageLocation? Identifier
|
||
|
||
TypeName = ElementaryTypeName
|
||
| UserDefinedTypeName
|
||
| Mapping
|
||
| ArrayTypeName
|
||
| FunctionTypeName
|
||
|
||
UserDefinedTypeName = Identifier ( '.' Identifier )*
|
||
|
||
Mapping = 'mapping' '(' ElementaryTypeName '=>' TypeName ')'
|
||
ArrayTypeName = TypeName '[' Expression? ']'
|
||
FunctionTypeName = 'function' TypeNameList ( 'internal' | 'external' | StateMutability )*
|
||
( 'returns' TypeNameList )?
|
||
StorageLocation = 'memory' | 'storage'
|
||
StateMutability = 'pure' | 'constant' | 'view' | 'payable'
|
||
|
||
Block = '{' Statement* '}'
|
||
Statement = IfStatement | WhileStatement | ForStatement | Block | InlineAssemblyStatement |
|
||
( DoWhileStatement | PlaceholderStatement | Continue | Break | Return |
|
||
Throw | SimpleStatement ) ';'
|
||
|
||
ExpressionStatement = Expression
|
||
IfStatement = 'if' '(' Expression ')' Statement ( 'else' Statement )?
|
||
WhileStatement = 'while' '(' Expression ')' Statement
|
||
PlaceholderStatement = '_'
|
||
SimpleStatement = VariableDefinition | ExpressionStatement
|
||
ForStatement = 'for' '(' (SimpleStatement)? ';' (Expression)? ';' (ExpressionStatement)? ')' Statement
|
||
InlineAssemblyStatement = 'assembly' StringLiteral? InlineAssemblyBlock
|
||
DoWhileStatement = 'do' Statement 'while' '(' Expression ')'
|
||
Continue = 'continue'
|
||
Break = 'break'
|
||
Return = 'return' Expression?
|
||
Throw = 'throw'
|
||
VariableDefinition = ('var' IdentifierList | VariableDeclaration) ( '=' Expression )?
|
||
IdentifierList = '(' ( Identifier? ',' )* Identifier? ')'
|
||
|
||
// Precedence by order (see github.com/ethereum/solidity/pull/732)
|
||
Expression
|
||
= Expression ('++' | '--')
|
||
| NewExpression
|
||
| IndexAccess
|
||
| MemberAccess
|
||
| FunctionCall
|
||
| '(' Expression ')'
|
||
| ('!' | '~' | '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
|
||
| PrimaryExpression
|
||
|
||
PrimaryExpression = BooleanLiteral
|
||
| NumberLiteral
|
||
| HexLiteral
|
||
| StringLiteral
|
||
| TupleExpression
|
||
| Identifier
|
||
| ElementaryTypeNameExpression
|
||
|
||
ExpressionList = Expression ( ',' Expression )*
|
||
NameValueList = Identifier ':' Expression ( ',' Identifier ':' Expression )*
|
||
|
||
FunctionCall = Expression '(' FunctionCallArguments ')'
|
||
FunctionCallArguments = '{' NameValueList? '}'
|
||
| ExpressionList?
|
||
|
||
NewExpression = 'new' TypeName
|
||
MemberAccess = Expression '.' Identifier
|
||
IndexAccess = Expression '[' Expression? ']'
|
||
|
||
BooleanLiteral = 'true' | 'false'
|
||
NumberLiteral = ( HexNumber | DecimalNumber ) (' ' NumberUnit)?
|
||
NumberUnit = 'wei' | 'szabo' | 'finney' | 'ether'
|
||
| 'seconds' | 'minutes' | 'hours' | 'days' | 'weeks' | 'years'
|
||
HexLiteral = 'hex' ('"' ([0-9a-fA-F]{2})* '"' | '\'' ([0-9a-fA-F]{2})* '\'')
|
||
StringLiteral = '"' ([^"\r\n\\] | '\\' .)* '"'
|
||
Identifier = [a-zA-Z_$] [a-zA-Z_$0-9]*
|
||
|
||
HexNumber = '0x' [0-9a-fA-F]+
|
||
DecimalNumber = [0-9]+
|
||
|
||
TupleExpression = '(' ( Expression ( ',' Expression )* )? ')'
|
||
| '[' ( Expression ( ',' Expression )* )? ']'
|
||
|
||
ElementaryTypeNameExpression = ElementaryTypeName
|
||
|
||
ElementaryTypeName = 'address' | 'bool' | 'string' | 'var'
|
||
| Int | Uint | 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 = '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' DecimalNumber 'x' DecimalNumber )
|
||
|
||
Ufixed = 'ufixed' | ( 'ufixed' DecimalNumber 'x' DecimalNumber )
|
||
|
||
InlineAssemblyBlock = '{' AssemblyItem* '}'
|
||
|
||
AssemblyItem = Identifier | FunctionalAssemblyExpression | InlineAssemblyBlock | AssemblyLocalBinding | AssemblyAssignment | AssemblyLabel | NumberLiteral | StringLiteral | HexLiteral
|
||
AssemblyLocalBinding = 'let' Identifier ':=' FunctionalAssemblyExpression
|
||
AssemblyAssignment = ( Identifier ':=' FunctionalAssemblyExpression ) | ( '=:' Identifier )
|
||
AssemblyLabel = Identifier ':'
|
||
FunctionalAssemblyExpression = Identifier '(' AssemblyItem? ( ',' AssemblyItem )* ')'
|