Method traverse

src/org/apache/pig/parser/QueryParserDriver.java:384–396

(Tree t, List<CommonTree> macroNodes,
            List<CommonTree> inlineNodes)

    }

    static void traverse(Tree t, List<CommonTree> macroNodes,
            List<CommonTree> inlineNodes) {
        if (t.getText().equals(MACRO_DEF)) {
            macroNodes.add((CommonTree) t.getParent());
        } else if (t.getText().equals(MACRO_INLINE)) {
            inlineNodes.add((CommonTree) t);
        }
        int n = t.getChildCount();
        for (int i = 0; i < n; i++) {
            Tree t0 = t.getChild(i);
            traverse(t0, macroNodes, inlineNodes);
        }
    }

    private FetchFileRet getMacroFile(String fname) {
        FetchFileRet localFileRet = null;