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// Simple language definition for testing syntax highlighting.
use core.lang;
delimiter = SDelim;
void SDelim();
SDelim : "[ \n\r\t]*";
// Identifier.
void SIdent();
SIdent : "[A-Za-z]+" #varName;
// Number.
void SNum();
SNum : "[0-9]+" #constant;
// Simple expressions.
void SExpr();
SExpr : SAtom, "\+" [, SExpr ]@;
SExpr : SAtom, "-" [, SExpr ]@;
SExpr : SAtom, "\*" [, SExpr ]@;
SExpr : SAtom, "/" [, SExpr ]@;
SExpr : SAtom, "or" #keyword [, SExpr ]@;
SExpr : SAtom;
void SAtom();
SAtom : SIdent;
SAtom : SNum;
// Statements.
void SStmt();
SStmt : "{" [, (SStmt, )* ]+ "}";
SStmt : "\[" [, (SStmt, )* ]- "\]";
SStmt : "if" #keyword - "()" [, SStmt]?;
SStmt : SExpr, ";";
// Entry point.
void SRoot();
SRoot : SDelim - (SStmt, )*;
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