32 lines
605 B
Plaintext
32 lines
605 B
Plaintext
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scannerless grammar T;
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method : 'fun' name=ID '(' a+=arg (',' a+=arg)* ')' body ;
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body : '{' (body|CMT|.)* '}' ; // nongreedy
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stat: 'return' INT
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| ID '=' expr
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;
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expr: atom ('*' atom)* ;
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atom: INT
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| sql
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;
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sql : 'select' '*' 'from' ID ;
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// literals like 'select' become 'select' WS rules? hmm..nope
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// might not want WS. or might need &!id-letter or something
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always call WS implicitly after any token match; if don't want, then make WS undefined.
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RETURN : 'return' {!Character.isJavaId(input.LA(1))}? WS ;
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ID : 'a'..'z'+ ;
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WS : (' '|'\n')* ;
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CMT : '/*' (options {greedy=false;}:.)* '*'/ ;
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