Issue 4353 - Remove non standard for each syntax

scripts/findInterfaces.js

-// This is a simple script to find all interfaces that a JS code uses, at least
-// via Components.interfaces.
-
-include("../utils/cleanast.js");
-include("../utils/dumpast.js");
-
-function visit(root_ast, func) {
-        function v_r(ast, func) {
-                if (ast == null)
-                        return;
-                func(ast);
-                for (let child of ast.kids)
-                        v_r(child, func);
-        }
-
-        function sanitize(ast) {
-                if (ast == null)
-                        return null;
-                if (ast.op == JSOP_NAME && ast.atom in aliases) {
-                        ast = sanitize(aliases[ast.atom]);
-                        ast.expanded = true;
-                }
-                let sanitized_ast = { kids: [] };
-                for (let key in ast) {
-                        if (key == 'kids') {
-                                for (let kid of ast.kids) {
-                                        sanitized_ast.kids.push(sanitize(kid));
-                                }
-                        } else {
-                                sanitized_ast[key] = ast[key];
-                        }
-                }
-                return sanitized_ast;
-        }
-
-        v_r(sanitize(root_ast), func);
-}
-
-let filename;
-
-function process_js(ast, f) {
-        filename = f;
-        let global = clean_ast(ast);
-        for (let c of global.constants) {
-                mark_globals(c);
-        }
-        //_print(uneval(aliases));
-        for (let v of global.variables) {
-                visit(v.init, find_interfaces);
-        }
-        for (let statement of global.code)
-                visit(statement, find_interfaces);
-        //_print(uneval(global));
-}
-
-let aliases = {};
-
-function mark_globals(constant) {
-        aliases[constant.name] = constant.init;
-}
-
-function find_interfaces(ast) {
-        if (ast.op == JSOP_GETPROP && ast.kids[0]) {
-                let check = ast.kids[0];
-                if (check.atom == "interfaces" && check.kids[0] &&
-                                check.kids[0].atom == "Components") {
-                        _print("Interface " + ast.atom + " used at " + loc2str(ast));
-                } else if (ast.atom && ast.atom == "nsIMimeStreamConverter") {
-                        _print(uneval(ast));
-                }
-        }
-}
-
-function loc2str(ast) {
-        return filename + ":" + ast.line + ":" + ast.column;
-}