Issue 4353 - Remove non standard for each syntax

utils/dumpast.js

-/**
- * Dumps the tree of the ast rooted at the given point.
- */
-function dump_ast(ast, prefix) {
-        if (ast == null)
-                return;
-        if (!prefix)
-                prefix = "";
-        let str = prefix + "+ ";
-        for (let key in ast) {
-                if (key == 'column' || key == 'line' || key == 'kids')
-                        continue;
-                let val = (key == 'op' ? decode_op(ast[key]) :
-        key == 'type' ? decode_type(ast[key]) :
-        key == 'flags' ? ('0x' + ast[key].toString(16)) : ast[key]);
-                str += key + ": " + val + "; ";
-        }
-        str += ast.line + ":" + ast.column;
-        _print(str);
-        prefix += " ";
-        for (let kid of ast.kids) {
-                dump_ast(kid, prefix);
-        }
-}
-
-var global = this;
-var optable = null, toktable;
-function decode_op(opcode) {
-        if (!optable) {
-                optable = [];
-                for (let key in global) {
-                        if (key.indexOf("JSOP_") == 0) {
-                                optable[global[key]] = key;
-                        }
-                }
-        }
-        if (opcode in optable)
-                return optable[opcode];
-        return opcode;
-}
-function decode_type(opcode) {
-        if (!toktable) {
-                toktable = [];
-                for (let key in global) {
-                        if (key.indexOf("TOK_") == 0) {
-                                toktable[global[key]] = key;
-                        }
-                }
-        }
-        if (opcode in toktable)
-                return toktable[opcode];
-        return opcode;
-}
-
-function dump_trueast(ast, prefix) {
-  if (ast == null)
-    return;
-        if (!prefix)
-                prefix = "";
-        let str = prefix + "+ ";
-  _print(prefix + ast.type + " @ " + ast.location + ":");
-        for (let key in ast) {
-                if (key == 'type' || key == 'location' || key == 'visit')
-                        continue;
-    let val = ast[key];
-    if (val instanceof Array) {
-      _print(prefix + " + " + key + ": [");
-      for (let kind of val) {
-        dump_trueast(kind, prefix + "   ");
-      }
-      _print(prefix + "   ]");
-    } else if (val instanceof Object && "type" in val) {
-      _print(prefix + " + " + key + ":");
-      dump_trueast(val, prefix + "   ");
-    } else {
-      _print(prefix + " + " + key + ": " + val);
-    }
-        }
-}