package com.google.javascript.gents.util;
import com.google.javascript.rhino.Node;
/**
* Utility methods for dealing with Closure's AST patterns used in Gents.
*
* <p>Ideally, the rest of the code will not do low-level AST manipulations and go through the
* utilities here, but there a lot more refactoring to be done to achieve that.
*/
public class GentsNodeUtil {
private GentsNodeUtil() {}
/**
* Returns true is the object is an object literal where all values are simple symbols references:
*
* <p>{A, B, C} -> true
*
* <p>{A, B: B} -> true
*
* <p>{A: C} -> true
*
* <p>{A: A + 1} -> false
*
* <p>{A: f(1)} -> false
*/
public static boolean isObjLitWithSimpleRefs(Node node) {
if (!node.isObjectLit()) return false;
for (Node child : node.children()) {
if (!child.isStringKey() || !child.getFirstChild().isName()) {
return false;
}
}
return true;
}
}
