Kuangcp/JavaBase

algorithms/src/main/antlr4/expression/Expr.g4

Summary

Maintainability

Test Coverage

Issues

grammar Expr;
prog:    expr NEWLINE ;
expr:    expr op=('*'|'/') expr # MulDiv
    |    expr op=('+'|'-') expr # AddSub
    |    INT                    # int
    |    '(' expr ')'        # parens
    ;
NEWLINE : [\r\n]+ ;
INT     : [0-9]+ ;

/*创建常量方便引入*/
MUL: '*';
DIV: '/';
Add: '+';
SUB: '-';