FnUtils are bloated and contain references to Asm classes. Separate the code needed by generated JsCallbacks into own class
2 * HTML via Java(tm) Language Bindings
3 * Copyright (C) 2013 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
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21 package org.apidesign.html.boot.impl;
23 import java.io.InputStream;
24 import java.io.InputStreamReader;
25 import java.io.Reader;
27 import java.util.ArrayList;
28 import java.util.Collections;
29 import java.util.Enumeration;
30 import java.util.List;
31 import org.apidesign.html.boot.spi.Fn;
35 * @author Jaroslav Tulach <jtulach@netbeans.org>
37 public final class FnUtils {
42 public static Fn define(Class<?> caller, String code, String... names) {
43 return FnContext.currentPresenter().defineFn(code, names);
46 public static boolean isJavaScriptCapable(ClassLoader l) {
47 return l instanceof JsClassLoader;
50 public static boolean isValid(Fn fn) {
51 return fn != null && fn.isValid();
54 public static ClassLoader newLoader(final FindResources f, final Fn.Presenter d, ClassLoader parent) {
55 return new JsClassLoader(parent) {
57 protected URL findResource(String name) {
58 List<URL> l = res(name, true);
59 return l.isEmpty() ? null : l.get(0);
63 protected Enumeration<URL> findResources(String name) {
64 return Collections.enumeration(res(name, false));
67 private List<URL> res(String name, boolean oneIsEnough) {
68 List<URL> l = new ArrayList<URL>();
69 f.findResources(name, l, oneIsEnough);
74 protected Fn defineFn(String code, String... names) {
75 return d.defineFn(code, names);
79 protected void loadScript(Reader code) throws Exception {
85 static String callback(final String body) {
86 return new JsCallback() {
88 protected CharSequence callMethod(
89 String ident, String fqn, String method, String params
91 StringBuilder sb = new StringBuilder();
92 sb.append("vm.").append(mangle(fqn, method, params));
103 static void loadScript(JsClassLoader jcl, String resource) {
104 final InputStream script = jcl.getResourceAsStream(resource);
105 if (script == null) {
106 throw new NullPointerException("Can't find " + resource);
111 isr = new InputStreamReader(script, "UTF-8");
118 } catch (Exception ex) {
119 throw new IllegalStateException("Can't execute " + resource, ex);