CODEWITHSUNDEEP
javaantlrantlr4
Povilas Dirse
Povilas Dirse

Reputation: 147

ANTLR function as argument

I'm creating a language with ANTLR4. I'm trying to make possible to pass function as method's parameter. But I'm unable to find ane resources. Maybe someone could give a hint or resources if there are any available?

My end goal:

public int function1()
{
  int a = function2(function3(1));
}

public int function2(int i)
{
  return i + 1;
}

public int function3(int i)
{
  return i+1;
}

Upvotes: 0

Views: 115

Answers (1)

Bart Kiers
Bart Kiers

Reputation: 170148

A function call would simply be an alternative in your expression rule:

expression
 : expression ( '+' | '-' ) expression
 | INTEGER
 | IDENTIFIER
 | functionCall
 ;

functionCall
 : IDENTIFIER '(' arguments? ')'
 ;

arguments
 : expression ( ',' expression )*
 ;

Upvotes: 1

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