80 lines
1.5 KiB
Markdown
80 lines
1.5 KiB
Markdown
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# Condition
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```antlr4
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grammar Condition;
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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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EQ: '==';
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NEQ: '!=';
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LT: '<';
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LTE: '<=';
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GT: '>';
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GTE: '>=';
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NOT: '!';
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AND: [Aa] [Nn] [Dd];
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OR: [Oo] [Rr];
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IN: [Ii] [Nn];
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NOTIN: [Nn] [Oo] [Tt] [Ii] [Nn];
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LEFT_PAREN: '(';
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RIGHT_PAREN: ')';
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LEFT_BRACKET: '[';
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RIGHT_BRACKET: ']';
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UNDERSCORE: '_';
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DOUBLE_QUOTE: '"';
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DOLLAR: '$';
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COMMA: ',';
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POINT: '.';
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WHITESPACE: [ \t\n\r]+ -> skip;
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fragment DIGIT: [0-9];
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fragment LETTER: [a-zA-Z];
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TRUE_LITERAL
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: [Tt] [Rr] [Uu] [Ee]
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;
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FALSE_LITERAL
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: [Ff] [Aa] [Ll] [Ss] [Ee]
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;
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FLOAT_LITERAL
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: DIGIT+ (POINT DIGIT+)
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;
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INT_LITERAL
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: DIGIT+
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;
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STRING_LITERAL
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: DOUBLE_QUOTE (~['"\n])*? DOUBLE_QUOTE
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;
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VAR
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: DOLLAR (LETTER | DIGIT | UNDERSCORE)+
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;
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start: expression EOF;
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expression
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: LEFT_PAREN expression RIGHT_PAREN # Paren
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| LEFT_BRACKET elements+=expression (COMMA elements+=expression)* RIGHT_BRACKET # Array
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| TRUE_LITERAL # TrueLiteral
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| FALSE_LITERAL # FalseLiteral
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| FLOAT_LITERAL # FloatLiteral
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| INT_LITERAL # IntLiteral
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| STRING_LITERAL # StringLiteral
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| VAR # Var
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| operator=(NOT | ADD | SUB) expression # Unary
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| expression operator=(MUL | DIV | MOD) expression # Binary
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| expression operator=(ADD | SUB) expression # Binary
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| expression operator=(EQ | NEQ | LT | LTE | GT | GTE | IN | NOTIN) expression # Binary
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| expression operator=AND expression # Binary
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| expression operator=OR expression # Binary
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;
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```
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