131 lines
3.2 KiB
Plaintext
131 lines
3.2 KiB
Plaintext
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grammar ReportParser;
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import ReportLexer;
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entry : expression+ EOF;
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expression : exprComposite
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| ifExpr
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| caseExpr
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| returnExpr
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| variableAssign
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;
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exprComposite : expr #singleExprComposite
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| ternaryExpr #ternaryExprComposite
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| LeftParen exprComposite RightParen #parenExprComposite
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| exprComposite Operator exprComposite #complexExprComposite
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;
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ternaryExpr : ifCondition (join ifCondition)* '?' block ':' block ;
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caseExpr : 'case' '{' casePart (',' casePart)* '}' ;
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casePart : ifCondition (join ifCondition)* ':'? block ;
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ifExpr: ifPart elseIfPart* elsePart? ;
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ifPart : 'if' '(' ifCondition (join ifCondition)* ')' '{' block '}';
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elseIfPart : 'else if' '(' ifCondition (join ifCondition)* ')' '{' block '}' ;
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elsePart : 'else' '{' block '}' ;
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block : exprBlock* returnExpr? ;
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exprBlock : variableAssign
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| ifExpr
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| caseExpr
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;
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returnExpr : 'return'? expr ';'?;
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expr : item ;
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ifCondition : expr OP expr ;
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variableAssign : 'var'? variable '=' item ';'?;
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// 算术表达式、逻辑表达式、连接表达式
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item : operatorUnary* unit (Operator* OP* join* operatorUnary* unit)* #simpleJoin
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| item (Operator* OP* join* item)+ #simpleItem
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//| LeftParen item RightParen #singleParenJoin
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| operatorUnary* LeftParen item RightParen #parenJoin
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;
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unit : dataset
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| function
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| set
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| itemOfCollection
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| cellPosition
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| relativeCell
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| currentCellValue
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| currentCellData
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| cell
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| variable
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| INTEGER
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| BOOLEAN
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| STRING
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| NUMBER
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| NULL
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;
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operatorUnary: 'not' | '-';
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variable : Identifier ;
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itemOfCollection: '@'; // 取集合中某项数据，多用于遍历过滤
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cellPosition : '&'Cell ;//表示单元格位置
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relativeCell : '$'Cell ; //表示当前引用对应的单元格的值
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currentCellValue : '#' ;//表示当前单元格值
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currentCellData : '#''.'property ;//表示取当前单元绑定对象的某个属性值
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cell : 'cell' ('.'property)? ;
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dataset : Identifier '.' aggregate '(' property? (',' conditions )? (',' ORDER)? ')';
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function : Identifier '(' functionParameter? ')' ;
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functionParameter : item (','? item)* ;
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set : simpleValue #simpleData
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| Cell #singleCell
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| Cell '['']'('{' item '}')? #wholeCell
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| Cell ':' Cell ('{' item '}')? #cellPair
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| Cell '{' item '}' #singleCellCondition
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| Cell '[' cellCoordinate ']' #singleCellCoordinate
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| Cell '[' cellCoordinate ']' '{' item '}' #cellCoordinateCondition
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| set 'to' set #range
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;
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cellCoordinate : coordinate (';' coordinate)? ;
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coordinate : cellIndicator (',' cellIndicator)* ;
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cellIndicator : Cell #relative
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| Cell ':' EXCLAMATION? OFFSET? INTEGER #absolute
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;
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conditions : condition (join condition)* ;
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condition : Cell OP expr #cellNameExprCondition
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| property OP expr #propertyCondition
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| currentValue OP expr #currentValueCondition
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| expr OP expr #exprCondition
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;
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property : Identifier
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| property '.' property
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;
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currentValue : '@@' ;
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simpleValue : INTEGER|NUMBER|STRING|BOOLEAN|NULL;
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join : AND | OR ;
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aggregate : Identifier;
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