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| Code Block |
|---|
import org.antlr.runtime.*;
public class Test {
public static void main(String[] args) throws Exception {
ANTLRInputStream input = new ANTLRInputStream(System.in);
ExprLexer lexer = new ExprLexer(input);
CommonTokenStream tokens = new CommonTokenStream(lexer);
ExprParser parser = new ExprParser(tokens);
parser.prog();
}
}
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Run ANTLR on the grammar and compile:
| Code Block |
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java org.antlr.Tool Expr.g
javac Test.java ExprLexer.java ExprParser.java
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Here is a sample run:
| No Format |
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$java Test x=1 y=2 3*(x+y) <EOF> 9 $ |
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