working version <3
This commit is contained in:
Nicolas Amaya
85
ExprLexer.g4
85
ExprLexer.g4
@@ -1,32 +1,22 @@
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lexer grammar ExprLexer;
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// UNICODE --------------------------------------------------------------------------------------------------------------
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UnicodeInputCharacter: UnicodeEscape | RawInputCharacter;
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fragment UnicodeEscape: '\\' UnicodeMarker HexDigit HexDigit HexDigit HexDigit;
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fragment UnicodeMarker: 'u'+;
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fragment RawInputCharacter: .;
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//not complete need to ask question from prof.
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// LINE TERMINATORS -----------------------------------------------------------------------------------------------------------------------
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LineTerminator: '\n' | '\r' | '\r\n';
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InputCharacter: [^\n\r];
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fragment LineTerminator: '\r' '\n'? | '\n';
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//WHITE SPACE ----------------------------------------------------------------------------------------------------------------------------------------
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WhiteSpace: (' ' | '\t' | '\f' | LineTerminator) -> skip;
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//COMMENTS --------------------------------------------------------------------------------------------------------------------------------------------------
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fragment EndOfLineComment: '//' ~('\r' | '\n')* LineTerminator?;
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Comment: (TraditionalComment | EndOfLineComment) -> skip;
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fragment TraditionalComment:
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'/*' NotStar CommentTail;
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'/*' NotStar CommentTail;
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fragment EndOfLineComment:
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'//' CharactersInLine? LineTerminator;
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//fragment EndOfLineComment:
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// '//' CharactersInLine? LineTerminator;
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fragment CommentTail: '*' CommentTailStar | NotStar ;
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@@ -39,10 +29,22 @@ fragment NotStar:
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fragment NotStarNotSlash:
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[^*/] | LineTerminator;
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fragment CharactersInLine: InputCharacter
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| InputCharacter;
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//fragment CharactersInLine: InputCharacter
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// | InputCharacter;
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//// UNICODE --------------------------------------------------------------------------------------------------------------
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//UnicodeInputCharacter: UnicodeEscape | RawInputCharacter;
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//
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//fragment UnicodeEscape: '\\' UnicodeMarker HexDigit HexDigit HexDigit HexDigit;
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//
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//fragment UnicodeMarker: 'u'+;
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//
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//
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//fragment RawInputCharacter: .;
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// //not complete need to ask question from prof.
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//
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//
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//fragment InputCharacter: [^\n\r];
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// KEYWORDS --------------------------------------------------------------------------------------------------------
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Abstract: 'abstract';
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@@ -95,6 +97,7 @@ Void: 'void';
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Volatile: 'volatile';
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While: 'while';
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Dot: '.';
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// LITERALS -------------------------------------------------------------------------------------------------------------------
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IntegerLiteral: DecimalIntegerLiteral | HexIntegerLiteral | OctalIntegerLiteral;
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@@ -195,32 +198,18 @@ SquareBracketLeft: '[';
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SquareBracketRight: ']';
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Semicolon: ';';
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Comma: ',';
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Dot: '.';
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//OPERATORS ---------------------------------------------------------------------------------------------------------------------------------------
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Assignment: '=';
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BitwiseComplement: '~';
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LessThan: '<';
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GreaterThan: '>';
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LogicalComplement: '!';
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Question: '?';
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Colon: ':';
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UnsignedRightShiftAssign: '>>>=';
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EqualTo: '==';
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NotEqualTo: '!=';
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LessThanEqualTo: '<=';
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GreaterThanEqualTo: '>=';
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NotEqualTo: '!=';
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ConditionalAND: '&&';
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ConditionalOR: '||';
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Increment: '++';
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Decrement: '--';
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Addition: '+';
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Subtraction: '-';
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Multiplication: '*';
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Division: '/';
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BitwiseAND: '&';
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BitwiseOR: '|';
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BitwiseXOR: '^';
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Remainder: '%';
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LeftShift: '<<';
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SignedRightShift: '>>';
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UnsignedRightShift: '>>>';
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@@ -234,14 +223,28 @@ BitwiseXORAssign: '^=';
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RemainderAssign: '%=';
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LeftShiftAssign: '<<=';
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SignedRightShiftAssign: '>>=';
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UnsignedRightShiftAssign: '>>>=';
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Assignment: '=';
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BitwiseComplement: '~';
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LessThan: '<';
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GreaterThan: '>';
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LogicalComplement: '!';
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Question: '?';
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Colon: ':';
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Addition: '+';
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Subtraction: '-';
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Multiplication: '*';
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Division: '/';
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BitwiseAND: '&';
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BitwiseOR: '|';
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BitwiseXOR: '^';
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Remainder: '%';
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//IDENTIFIERS -------------------------------------------------------------------------------------------------------------------------------------------
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IDENTIFIER: JavaLetter JavaLetterOrDigit;
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IDENTIFIER: JavaLetter JavaLetterOrDigit*;
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fragment JavaLetter:
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[a-zA-Z_$];
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[a-zA-Z$_];
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fragment JavaLetterOrDigit:
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JavaLetter | [0-9];
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[A-Za-z0-9$_];
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191
ExprSyntactic.g4
191
ExprSyntactic.g4
@@ -3,7 +3,7 @@ parser grammar ExprSyntactic;
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options {
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tokenVocab=ExprLexer;
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}
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prog: compilationUnit EOF;
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identifier: IDENTIFIER;
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qualifiedIdentifier: identifier (Dot identifier)*;
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@@ -15,7 +15,41 @@ literal: IntegerLiteral
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| BooleanLiteral
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| NullLiteral;
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expression: expression1 (assignmentOperator expression1)?;
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expression: unaryExpr assignmentOperator expression | conditionalExpr ;
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//Highest Prescedence _Expr = expression
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//assignmentExpr: unaryExpr assignmentOperator assignmentExpr | conditionalExpr;
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conditionalExpr: logicalOrExpr '?' conditionalExpr ':' conditionalExpr |logicalOrExpr;
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logicalOrExpr: logicalAndExpr ('||' logicalAndExpr)*;
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logicalAndExpr: equalityExpr ('&&' equalityExpr)*;
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equalityExpr: relationalExpr (('==' | '!=') relationalExpr)*;
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relationalExpr: additiveExpr(('<' | '>' | '<=' | '>=') additiveExpr | 'instanceof' type)*;
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additiveExpr: multiplicativeExpr(('+' | '-') multiplicativeExpr)*;
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multiplicativeExpr: unaryExpr(('*' | '/' | '%') unaryExpr)*;
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unaryExpr:postfixExpr |('+' | '-' | '!' | '~' | '++' | '--') unaryExpr | parExpression type unaryExpr;
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postfixExpr: primaryExpr ('++'| '--'| '.' IDENTIFIER | '[' expression ']' | arguments)*;
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primaryExpr: parExpression
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| IntegerLiteral
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| FloatingPointLiteral
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| StringLiteral
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| CharacterLiteral
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| BooleanLiteral
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| NullLiteral
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| IDENTIFIER
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| 'this'
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| 'super' ('.' IDENTIFIER)?
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| 'new' type arguments
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| primitiveType ('[' ']')* '.' 'class'
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| type '.' 'class';
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assignmentOperator: Assignment
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@@ -32,78 +66,78 @@ assignmentOperator: Assignment
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| UnsignedRightShiftAssign;
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type: identifier (Dot identifier)* bracketsOpt
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| basicType;
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| primitiveType;
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statementExpression: expression;
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constantExpression: expression;
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expression1: expression2 (expression1Rest)?;
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//expression1: expression2 (expression1Rest)?;
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//
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//expression1Rest: Question expression Colon expression1;
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//
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//expression2: expression3 expression2Rest?;
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//
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//expression2Rest: (infixop expression3)+
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// | InstanceOf type;
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expression1Rest: Question expression Colon expression1;
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//infixop: ConditionalOR
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// | ConditionalAND
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// | BitwiseOR
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// | BitwiseXOR
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// | BitwiseAND
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// | EqualTo
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// | NotEqualTo
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// | LessThan
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// | GreaterThan
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// | LessThanEqualTo
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// | GreaterThanEqualTo
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// | LeftShift
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// | SignedRightShift
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// | UnsignedRightShift
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// | Addition
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// | Subtraction
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// | Multiplication
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// | Division
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// | Remainder;
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expression2: expression3 expression2Rest?;
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//expression3: prefixOp expression3 // Recursion
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// | ParenthesesLeft type ParenthesesRight expression3
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// | primary (selector)* (postfixOp)*;
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expression2Rest: (infixop expression3)+
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| InstanceOf type;
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infixop: ConditionalOR
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| ConditionalAND
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| BitwiseOR
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| BitwiseXOR
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| BitwiseAND
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| EqualTo
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| NotEqualTo
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| LessThan
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| GreaterThan
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| LessThanEqualTo
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| GreaterThanEqualTo
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| LeftShift
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| SignedRightShift
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| UnsignedRightShift
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| Addition
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| Subtraction
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| Multiplication
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| Division
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| Remainder;
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expression3: prefixOp expression3 // Recursion
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| ParenthesesLeft type ParenthesesRight expression3
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| primary (selector)* (postfixOp)*;
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primary: (expression)
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| This (arguments)?
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| Super superSuffix
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| literal
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| New creator
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| identifier (Dot identifier)* (identifierSuffix)?
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| basicType bracketsOpt Dot Class
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| Void Dot Class;
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//primary: (expression)
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// | This (arguments)?
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// | Super superSuffix
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// | literal
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// | New creator
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// | identifier (Dot identifier)* (identifierSuffix)?
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// | primitiveType bracketsOpt Dot Class
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// | Void Dot Class;
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identifierSuffix: SquareBracketLeft SquareBracketRight bracketsOpt Dot Class //Case []...'.'class
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|SquareBracketLeft expression SquareBracketRight //arr[5]
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|arguments
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|Dot (Class | This | Super arguments New innerCreator);
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prefixOp: Increment
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| Decrement
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| LogicalComplement
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| BitWiseComplement
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| Addition
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| Subtraction;
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//prefixOp: Increment
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// | Decrement
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// | LogicalComplement
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// | BitWiseComplement
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// | Addition
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// | Subtraction;
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postfixOp: Increment | Decrement;
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selector: Dot identifier (arguments)?
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| Dot This
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| Dot Super superSuffix
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| Dot New innerCreator
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| SquareBracketLeft expression SquareBracketRight;
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//selector: Dot identifier (arguments)?
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// | Dot This
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// | Dot Super superSuffix
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// | Dot New innerCreator
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// | SquareBracketLeft expression SquareBracketRight;
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superSuffix: arguments
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| Dot identifier (arguments)?;
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//primitives
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basicType: Byte
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//superSuffix: arguments
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// | Dot identifier (arguments)?;
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primitiveType: Byte
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| Short
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| Char
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| Int
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@@ -111,6 +145,7 @@ basicType: Byte
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| Float
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| Double
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| Boolean;
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//Method arguments
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argumentsOpt: (arguments)?;
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arguments: ParenthesesLeft (expression (Comma expression)*)? ParenthesesRight;
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@@ -142,21 +177,29 @@ blockStatement: localVariableDeclarationStatement
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localVariableDeclarationStatement: (Final)? type variableDeclarators;
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statement: block
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| If parExpression statement (Else statement)?
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| For ParenthesesLeft forInit? Semicolon (expression)? Semicolon forUpdate? ParenthesesRight statement
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| While parExpression statement
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| Do statement While parExpression Semicolon
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| Try block (catches | (catches)? Finally block)
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| Switch parExpression CurlyBracketLeft switchBlockStatementGroups? CurlyBracketRight
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| Synchronized parExpression block
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| Return (expression)? Semicolon
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| Throw expression Semicolon
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| Break (identifier)? Semicolon
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| Continue (identifier)? Semicolon
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| Semicolon
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//| expressionStatement
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| identifier Colon statement;
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statement
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: matchedStatement // Case 1: All non-ambiguous statements
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| If parExpression statementNoShortIf // Case 2: The 'Dangling' if (ends with an unmatched if)
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;
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statementNoShortIf: block
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| If parExpression matchedStatement Else statementNoShortIf
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| For ParenthesesLeft forInit? Semicolon (expression)? Semicolon forUpdate? ParenthesesRight statement
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| While parExpression statement
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| Do statement While parExpression Semicolon
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| Try block (catches+ Finally block? | Finally block)
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| Switch parExpression CurlyBracketLeft switchBlockStatementGroups? CurlyBracketRight
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| Synchronized parExpression block
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| Return (expression)? Semicolon
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| Throw expression Semicolon
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| Break (identifier)? Semicolon
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| Continue (identifier)? Semicolon
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| Semicolon
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| statementExpression Semicolon
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| identifier Colon statement;
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matchedStatement: If parExpression matchedStatement Else matchedStatement
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| statementNoShortIf;
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catches: catchClause (catchClause)*;
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@@ -205,11 +248,11 @@ constantDeclaratorRest: bracketsOpt Assignment variableInitializer;
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variableDeclaratorId: identifier bracketsOpt;
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compilationUnit: (Package qualifiedIdentifier Semicolon)? (importDeclaration)*;
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compilationUnit: (Package qualifiedIdentifier Semicolon)? (importDeclaration)*(typeDeclaration)*;
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importDeclaration: Import identifier (Dot identifier)* (Dot Multiplication)? Semicolon;
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typeDeclaration: classOrInterfaceDeclaration Semicolon;
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typeDeclaration: classOrInterfaceDeclaration | Semicolon;
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classOrInterfaceDeclaration: modifiersOpt (classDeclaration | interfaceDeclaration);
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@@ -258,7 +301,7 @@ voidInterfaceMethodDeclaratorRest: formalParameters (Throws qualifiedIdentifierL
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constructorDeclaratorRest: formalParameters (Throws qualifiedIdentifierList)? methodBody;
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qualifiedIdentifierList: qualifiedIdentifier (Semicolon qualifiedIdentifier)*;
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qualifiedIdentifierList: qualifiedIdentifier (Comma qualifiedIdentifier)*;
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formalParameters: ParenthesesLeft (formalParameter (Comma formalParameter)*)? ParenthesesRight;
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