Method createIf

rhino/src/main/java/org/mozilla/javascript/IRFactory.java:1969–2005

(Node cond, Node ifTrue, Node ifFalse, int lineno, int column)

    }

    private static Node createIf(Node cond, Node ifTrue, Node ifFalse, int lineno, int column) {
        int condStatus = isAlwaysDefinedBoolean(cond);
        if (condStatus == ALWAYS_TRUE_BOOLEAN) {
            return ifTrue;
        } else if (condStatus == ALWAYS_FALSE_BOOLEAN) {
            if (ifFalse != null) {
                return ifFalse;
            }
            // Replace if (false) xxx by empty block
            return new Node(Token.BLOCK, lineno, column);
        }

        Node result = new Node(Token.BLOCK, lineno, column);
        Node ifNotTarget = Node.newTarget();
        Jump IFNE = new Jump(Token.IFNE, cond);
        IFNE.target = ifNotTarget;

        result.addChildToBack(IFNE);
        result.addChildrenToBack(ifTrue);

        if (ifFalse != null) {
            Node endTarget = Node.newTarget();
            result.addChildToBack(makeJump(Token.GOTO, endTarget));
            result.addChildToBack(ifNotTarget);
            result.addChildrenToBack(ifFalse);
            result.addChildToBack(endTarget);
        } else {
            result.addChildToBack(ifNotTarget);
        }

        if (cond.getFirstChild() != null) {
            Node conditionalChild = cond.getFirstChild();
            result.setLineColumnNumber(conditionalChild.getLineno(), conditionalChild.getColumn());
        }

        return result;
    }

    private static Node createCondExpr(Node cond, Node ifTrue, Node ifFalse) {
        int condStatus = isAlwaysDefinedBoolean(cond);