mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
335 lines
9.9 KiB
ANTLR
335 lines
9.9 KiB
ANTLR
lexer grammar SolidityLexer;
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/**
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* Keywords reserved for future use in Solidity.
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*/
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ReservedKeywords:
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'after' | 'alias' | 'apply' | 'auto' | 'byte' | 'case' | 'copyof' | 'default' | 'define' | 'final'
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| 'implements' | 'in' | 'inline' | 'let' | 'macro' | 'match' | 'mutable' | 'null' | 'of'
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| 'partial' | 'promise' | 'reference' | 'relocatable' | 'sealed' | 'sizeof' | 'static'
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| 'supports' | 'switch' | 'typedef' | 'typeof' | 'var';
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Pragma: 'pragma' -> pushMode(PragmaMode);
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Abstract: 'abstract';
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Anonymous: 'anonymous';
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Address: 'address';
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As: 'as';
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Assembly: 'assembly' -> pushMode(AssemblyBlockMode);
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Bool: 'bool';
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Break: 'break';
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Bytes: 'bytes';
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Calldata: 'calldata';
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Catch: 'catch';
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Constant: 'constant';
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Constructor: 'constructor';
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Continue: 'continue';
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Contract: 'contract';
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Delete: 'delete';
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Do: 'do';
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Else: 'else';
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Emit: 'emit';
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Enum: 'enum';
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Event: 'event';
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External: 'external';
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Fallback: 'fallback';
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False: 'false';
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Fixed: 'fixed' | ('fixed' [1-9][0-9]* 'x' [1-9][0-9]*);
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From: 'from';
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/**
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* Bytes types of fixed length.
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*/
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FixedBytes:
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'bytes1' | 'bytes2' | 'bytes3' | 'bytes4' | 'bytes5' | 'bytes6' | 'bytes7' | 'bytes8' |
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'bytes9' | 'bytes10' | 'bytes11' | 'bytes12' | 'bytes13' | 'bytes14' | 'bytes15' | 'bytes16' |
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'bytes17' | 'bytes18' | 'bytes19' | 'bytes20' | 'bytes21' | 'bytes22' | 'bytes23' | 'bytes24' |
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'bytes25' | 'bytes26' | 'bytes27' | 'bytes28' | 'bytes29' | 'bytes30' | 'bytes31' | 'bytes32';
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For: 'for';
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Function: 'function';
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Hex: 'hex';
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If: 'if';
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Immutable: 'immutable';
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Import: 'import';
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Indexed: 'indexed';
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Interface: 'interface';
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Internal: 'internal';
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Is: 'is';
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Library: 'library';
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Mapping: 'mapping';
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Memory: 'memory';
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Modifier: 'modifier';
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New: 'new';
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/**
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* Unit denomination for numbers.
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*/
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NumberUnit: 'wei' | 'gwei' | 'ether' | 'seconds' | 'minutes' | 'hours' | 'days' | 'weeks' | 'years';
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Override: 'override';
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Payable: 'payable';
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Private: 'private';
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Public: 'public';
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Pure: 'pure';
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Receive: 'receive';
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Return: 'return';
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Returns: 'returns';
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/**
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* Sized signed integer types.
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* int is an alias of int256.
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*/
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SignedIntegerType:
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'int' | 'int8' | 'int16' | 'int24' | 'int32' | 'int40' | 'int48' | 'int56' | 'int64' |
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'int72' | 'int80' | 'int88' | 'int96' | 'int104' | 'int112' | 'int120' | 'int128' |
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'int136' | 'int144' | 'int152' | 'int160' | 'int168' | 'int176' | 'int184' | 'int192' |
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'int200' | 'int208' | 'int216' | 'int224' | 'int232' | 'int240' | 'int248' | 'int256';
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Storage: 'storage';
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String: 'string';
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Struct: 'struct';
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True: 'true';
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Try: 'try';
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Type: 'type';
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Ufixed: 'ufixed' | ('ufixed' [1-9][0-9]+ 'x' [1-9][0-9]+);
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Unchecked: 'unchecked';
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/**
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* Sized unsigned integer types.
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* uint is an alias of uint256.
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*/
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UnsignedIntegerType:
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'uint' | 'uint8' | 'uint16' | 'uint24' | 'uint32' | 'uint40' | 'uint48' | 'uint56' | 'uint64' |
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'uint72' | 'uint80' | 'uint88' | 'uint96' | 'uint104' | 'uint112' | 'uint120' | 'uint128' |
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'uint136' | 'uint144' | 'uint152' | 'uint160' | 'uint168' | 'uint176' | 'uint184' | 'uint192' |
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'uint200' | 'uint208' | 'uint216' | 'uint224' | 'uint232' | 'uint240' | 'uint248' | 'uint256';
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Using: 'using';
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View: 'view';
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Virtual: 'virtual';
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While: 'while';
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LParen: '(';
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RParen: ')';
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LBrack: '[';
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RBrack: ']';
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LBrace: '{';
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RBrace: '}';
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Colon: ':';
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Semicolon: ';';
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Period: '.';
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Conditional: '?';
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DoubleArrow: '=>';
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RightArrow: '->';
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Assign: '=';
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AssignBitOr: '|=';
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AssignBitXor: '^=';
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AssignBitAnd: '&=';
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AssignShl: '<<=';
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AssignSar: '>>=';
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AssignShr: '>>>=';
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AssignAdd: '+=';
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AssignSub: '-=';
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AssignMul: '*=';
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AssignDiv: '/=';
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AssignMod: '%=';
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Comma: ',';
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Or: '||';
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And: '&&';
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BitOr: '|';
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BitXor: '^';
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BitAnd: '&';
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Shl: '<<';
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Sar: '>>';
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Shr: '>>>';
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Add: '+';
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Sub: '-';
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Mul: '*';
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Div: '/';
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Mod: '%';
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Exp: '**';
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Equal: '==';
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NotEqual: '!=';
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LessThan: '<';
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GreaterThan: '>';
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LessThanOrEqual: '<=';
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GreaterThanOrEqual: '>=';
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Not: '!';
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BitNot: '~';
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Inc: '++';
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Dec: '--';
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/**
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* A single quoted string literal restricted to printable characters.
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*/
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StringLiteral: '"' DoubleQuotedStringCharacter* '"' | '\'' SingleQuotedStringCharacter* '\'';
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/**
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* A single non-empty quoted string literal.
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*/
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NonEmptyStringLiteral: '"' DoubleQuotedStringCharacter+ '"' | '\'' SingleQuotedStringCharacter+ '\'';
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// Note that this will also be used for Yul string literals.
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//@doc:inline
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fragment DoubleQuotedStringCharacter: DoubleQuotedPrintable | EscapeSequence;
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// Note that this will also be used for Yul string literals.
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//@doc:inline
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fragment SingleQuotedStringCharacter: SingleQuotedPrintable | EscapeSequence;
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/**
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* Any printable character except single quote or back slash.
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*/
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fragment SingleQuotedPrintable: [\u0020-\u0026\u0028-\u005B\u005D-\u007E];
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/**
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* Any printable character except double quote or back slash.
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*/
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fragment DoubleQuotedPrintable: [\u0020-\u0021\u0023-\u005B\u005D-\u007E];
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/**
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* Escape sequence.
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* Apart from common single character escape sequences, line breaks can be escaped
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* as well as four hex digit unicode escapes \\uXXXX and two digit hex escape sequences \\xXX are allowed.
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*/
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fragment EscapeSequence:
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'\\' (
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['"\\nrt\n\r]
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| 'u' HexCharacter HexCharacter HexCharacter HexCharacter
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| 'x' HexCharacter HexCharacter
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);
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/**
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* A single quoted string literal allowing arbitrary unicode characters.
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*/
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UnicodeStringLiteral:
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'unicode"' DoubleQuotedUnicodeStringCharacter* '"'
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| 'unicode\'' SingleQuotedUnicodeStringCharacter* '\'';
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//@doc:inline
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fragment DoubleQuotedUnicodeStringCharacter: ~["\r\n\\] | EscapeSequence;
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//@doc:inline
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fragment SingleQuotedUnicodeStringCharacter: ~['\r\n\\] | EscapeSequence;
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/**
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* Hex strings need to consist of an even number of hex digits that may be grouped using underscores.
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*/
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HexString: 'hex' (('"' EvenHexDigits? '"') | ('\'' EvenHexDigits? '\''));
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/**
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* Hex numbers consist of a prefix and an arbitrary number of hex digits that may be delimited by underscores.
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*/
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HexNumber: '0' 'x' HexDigits;
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//@doc:inline
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fragment HexDigits: HexCharacter ('_'? HexCharacter)*;
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//@doc:inline
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fragment EvenHexDigits: HexCharacter HexCharacter ('_'? HexCharacter HexCharacter)*;
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//@doc:inline
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fragment HexCharacter: [0-9A-Fa-f];
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/**
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* A decimal number literal consists of decimal digits that may be delimited by underscores and
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* an optional positive or negative exponent.
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* If the digits contain a decimal point, the literal has fixed point type.
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*/
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DecimalNumber: (DecimalDigits | (DecimalDigits? '.' DecimalDigits)) ([eE] '-'? DecimalDigits)?;
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//@doc:inline
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fragment DecimalDigits: [0-9] ('_'? [0-9])* ;
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/**
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* An identifier in solidity has to start with a letter, a dollar-sign or an underscore and
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* may additionally contain numbers after the first symbol.
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*/
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Identifier: IdentifierStart IdentifierPart*;
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//@doc:inline
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fragment IdentifierStart: [a-zA-Z$_];
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//@doc:inline
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fragment IdentifierPart: [a-zA-Z0-9$_];
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WS: [ \t\r\n\u000C]+ -> skip ;
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COMMENT: '/*' .*? '*/' -> channel(HIDDEN) ;
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LINE_COMMENT: '//' ~[\r\n]* -> channel(HIDDEN);
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mode AssemblyBlockMode;
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//@doc:inline
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AssemblyDialect: '"evmasm"';
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AssemblyLBrace: '{' -> popMode, pushMode(YulMode);
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AssemblyBlockWS: [ \t\r\n\u000C]+ -> skip ;
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AssemblyBlockCOMMENT: '/*' .*? '*/' -> channel(HIDDEN) ;
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AssemblyBlockLINE_COMMENT: '//' ~[\r\n]* -> channel(HIDDEN) ;
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mode YulMode;
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YulBreak: 'break';
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YulCase: 'case';
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YulContinue: 'continue';
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YulDefault: 'default';
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YulFalse: 'false';
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YulFor: 'for';
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YulFunction: 'function';
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YulIf: 'if';
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YulLeave: 'leave';
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YulLet: 'let';
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YulSwitch: 'switch';
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YulTrue: 'true';
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/**
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* Builtin functions in the EVM Yul dialect.
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*/
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YulEVMBuiltin:
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'stop' | 'add' | 'sub' | 'mul' | 'div' | 'sdiv' | 'mod' | 'smod' | 'exp' | 'not'
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| 'lt' | 'gt' | 'slt' | 'sgt' | 'eq' | 'iszero' | 'and' | 'or' | 'xor' | 'byte'
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| 'shl' | 'shr' | 'sar' | 'addmod' | 'mulmod' | 'signextend' | 'keccak256'
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| 'pop' | 'mload' | 'mstore' | 'mstore8' | 'sload' | 'sstore' | 'msize' | 'gas'
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| 'address' | 'balance' | 'selfbalance' | 'caller' | 'callvalue' | 'calldataload'
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| 'calldatasize' | 'calldatacopy' | 'extcodesize' | 'extcodecopy' | 'returndatasize'
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| 'returndatacopy' | 'extcodehash' | 'create' | 'create2' | 'call' | 'callcode'
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| 'delegatecall' | 'staticcall' | 'return' | 'revert' | 'selfdestruct' | 'invalid'
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| 'log0' | 'log1' | 'log2' | 'log3' | 'log4' | 'chainid' | 'origin' | 'gasprice'
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| 'blockhash' | 'coinbase' | 'timestamp' | 'number' | 'difficulty' | 'gaslimit';
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YulLBrace: '{' -> pushMode(YulMode);
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YulRBrace: '}' -> popMode;
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YulLParen: '(';
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YulRParen: ')';
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YulAssign: ':=';
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YulPeriod: '.';
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YulComma: ',';
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YulArrow: '->';
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/**
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* Yul identifiers consist of letters, dollar signs, underscores and numbers, but may not start with a number.
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* In inline assembly there cannot be dots in user-defined identifiers. Instead see yulPath for expressions
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* consisting of identifiers with dots.
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*/
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YulIdentifier: YulIdentifierStart YulIdentifierPart*;
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//@doc:inline
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fragment YulIdentifierStart: [a-zA-Z$_];
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//@doc:inline
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fragment YulIdentifierPart: [a-zA-Z0-9$_];
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/**
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* Hex literals in Yul consist of a prefix and one or more hexadecimal digits.
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*/
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YulHexNumber: '0' 'x' [0-9a-fA-F]+;
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/**
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* Decimal literals in Yul may be zero or any sequence of decimal digits without leading zeroes.
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*/
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YulDecimalNumber: '0' | ([1-9] [0-9]*);
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/**
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* String literals in Yul consist of one or more double-quoted or single-quoted strings
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* that may contain escape sequences and printable characters except unescaped line breaks or
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* unescaped double-quotes or single-quotes, respectively.
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*/
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YulStringLiteral:
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'"' DoubleQuotedStringCharacter* '"'
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| '\'' SingleQuotedStringCharacter* '\'';
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YulWS: [ \t\r\n\u000C]+ -> skip ;
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YulCOMMENT: '/*' .*? '*/' -> channel(HIDDEN) ;
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YulLINE_COMMENT: '//' ~[\r\n]* -> channel(HIDDEN) ;
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mode PragmaMode;
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/**
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* Pragma token. Can contain any kind of symbol except a semicolon.
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* Note that currently the solidity parser only allows a subset of this.
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*/
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//@doc:name pragma-token
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//@doc:no-diagram
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PragmaToken: ~[;]+;
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PragmaSemicolon: ';' -> popMode;
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PragmaWS: [ \t\r\n\u000C]+ -> skip ;
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PragmaCOMMENT: '/*' .*? '*/' -> channel(HIDDEN) ;
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PragmaLINE_COMMENT: '//' ~[\r\n]* -> channel(HIDDEN) ;
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