gwt 2.0.1 does not have shared RegExp

1 files changed, 112 insertions, 0 deletions

diff --git a/gwtquery-core-2.0.1/src/main/java/com/google/gwt/query/rebind/SelectorGeneratorCssToXPath.java b/gwtquery-core-2.0.1/src/main/java/com/google/gwt/query/rebind/SelectorGeneratorCssToXPath.java
new file mode 100644
index 00000000..04028ef0
--- /dev/null
+++ b/gwtquery-core-2.0.1/src/main/java/com/google/gwt/query/rebind/SelectorGeneratorCssToXPath.java
@@ -0,0 +1,112 @@
+/*

+ * Copyright 2011, The gwtquery team.

+ * 

+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not

+ * use this file except in compliance with the License. You may obtain a copy of

+ * the License at

+ * 

+ * http://www.apache.org/licenses/LICENSE-2.0

+ * 

+ * Unless required by applicable law or agreed to in writing, software

+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT

+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the

+ * License for the specific language governing permissions and limitations under

+ * the License.

+ */

+package com.google.gwt.query.rebind;

+

+import java.util.ArrayList;

+import java.util.regex.MatchResult;

+import java.util.regex.Matcher;

+import java.util.regex.Pattern;

+

+import javax.xml.xpath.XPath;

+import javax.xml.xpath.XPathExpressionException;

+import javax.xml.xpath.XPathFactory;

+

+import com.google.gwt.core.ext.TreeLogger;

+import com.google.gwt.core.ext.UnableToCompleteException;

+import com.google.gwt.core.ext.typeinfo.JMethod;

+import com.google.gwt.query.client.Selector;

+import com.google.gwt.query.client.impl.SelectorEngineCssToXPath;

+import com.google.gwt.query.client.impl.SelectorEngineCssToXPath.ReplaceCallback;

+import com.google.gwt.query.client.impl.SelectorEngineCssToXPath.Replacer;

+import com.google.gwt.user.rebind.SourceWriter;

+

+/**

+ * Compile time selector generator which translates selector into XPath at

+ * compile time. It Uses the SelectorEngineCssToXpath to produce the xpath

+ * selectors

+ */

+public class SelectorGeneratorCssToXPath extends SelectorGeneratorBase {

+

+  /**

+   * The replacer implementation for the JVM.

+   */

+  public static final Replacer replacerJvm = new Replacer() {

+    public String replaceAll(String s, String r, Object o) {

+      Pattern p = Pattern.compile(r);

+      if (o instanceof ReplaceCallback) {

+        final Matcher matcher = p.matcher(s);

+        ReplaceCallback callback = (ReplaceCallback) o;

+        while (matcher.find()) {

+          final MatchResult matchResult = matcher.toMatchResult();

+          ArrayList<String> argss = new ArrayList<String>();

+          for (int i = 0; i < matchResult.groupCount() + 1; i++) {

+            argss.add(matchResult.group(i));

+          }

+          final String replacement = callback.foundMatch(argss);

+          s = s.substring(0, matchResult.start()) + replacement

+              + s.substring(matchResult.end());

+          matcher.reset(s);

+        }

+        return s;

+      } else {

+        return p.matcher(s).replaceAll(o.toString());

+      }

+    }

+  };

+

+  public static final Replacer replacer = replacerJvm;

+

+  private SelectorEngineCssToXPath engine = new SelectorEngineCssToXPath(

+      replacer);

+

+  protected String css2Xpath(String s) {

+    return engine.css2Xpath(s);

+  }

+

+  private XPathFactory factory = XPathFactory.newInstance();

+  private XPath xpath = factory.newXPath();

+

+  protected void generateMethodBody(SourceWriter sw, JMethod method,

+      TreeLogger treeLogger, boolean hasContext)

+      throws UnableToCompleteException {

+

+    String selector = method.getAnnotation(Selector.class).value();

+    String xselector = css2Xpath(selector);

+

+    // Validate the generated xpath selector.

+    try {

+      validateXpath(xselector);

+    } catch (XPathExpressionException e1) {

+      System.err.println("Invalid XPath generated selector, please revise it: " + xselector);

+      if (!selector.equals(xselector)) {

+        System.err.println("If your css2 selector syntax is correct, open an issue in the gwtquery project. cssselector:"

+            + selector + " xpath:" + xselector);

+      }

+      throw new UnableToCompleteException();

+    }

+

+    sw.println("return "

+        + wrap(method, "xpathEvaluate(\"" + xselector + "\", root)") + ";");

+  }

+  

+  public void validateXpath(String xselector) throws XPathExpressionException {

+    xpath.compile(xselector);

+  }

+

+  protected String getImplSuffix() {

+    return "CssToXPath" + super.getImplSuffix();

+  }

+}