--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/org.chromium.debug.core/src/org/chromium/debug/core/model/VmResourceId.java	Mon Jun 07 16:51:19 2010 -0700
@@ -0,0 +1,118 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.debug.core.model;
+
+import org.chromium.sdk.Breakpoint;
+import org.chromium.sdk.JavascriptVm;
+import org.chromium.sdk.Script;
+
+/**
+ * Id of resources loaded in V8 VM. We only know that they may have name (typically filename or
+ * URL) or numerical id instead. This class reflects this.
+ * The class also contains several utility methods that probably should be separated in the future.
+ */
+public class VmResourceId {
+
+  public static VmResourceId forName(String scriptName) {
+    return new VmResourceId(scriptName);
+  }
+
+  public static VmResourceId forId(long scriptId) {
+    return new VmResourceId(Long.valueOf(scriptId));
+  }
+
+  public static VmResourceId forScript(Script script) {
+    if (script.getName() != null) {
+      return forName(script.getName());
+    } else {
+      return forId(script.getId());
+    }
+  }
+
+  private final Object value;
+
+  private VmResourceId(Object value) {
+    if (value == null) {
+      throw new IllegalArgumentException("Null id value"); //$NON-NLS-1$
+    }
+    this.value = value;
+  }
+
+  @Override
+  public int hashCode() {
+    return value.hashCode();
+  }
+
+  @Override
+  public boolean equals(Object obj) {
+    if (obj instanceof VmResourceId == false) {
+      return false;
+    }
+    VmResourceId other = (VmResourceId) obj;
+    return this.value.equals(other.value);
+  }
+
+  /**
+   * @return parameter for {@link JavascriptVm#setBreakpoint} method.
+   */
+  public Breakpoint.Type getTypeForBreakpoint() {
+    if (value instanceof String) {
+      return Breakpoint.Type.SCRIPT_NAME;
+    } else {
+      return Breakpoint.Type.SCRIPT_ID;
+    }
+  }
+
+  /**
+   * @return parameter for {@link JavascriptVm#setBreakpoint} method.
+   */
+  public String getTargetForBreakpoint() {
+    return value.toString();
+  }
+
+  String createFileNameTemplate(boolean isEval) {
+    if (value instanceof String) {
+      return value.toString();
+    } else {
+      if (isEval) {
+        return "<eval #" + value + ">"; //$NON-NLS-1$ //$NON-NLS-2$
+      } else {
+        return "<no name #" + value + ">"; //$NON-NLS-1$ //$NON-NLS-2$
+      }
+    }
+
+  }
+
+  @Override
+  public String toString() {
+    return getEclipseSourceName();
+  }
+
+  /**
+   * @return source name that is suitable for Eclipse debug source lookup.
+   */
+  public String getEclipseSourceName() {
+    if (value instanceof String) {
+      String stringValue = (String) value;
+      if (stringValue.startsWith("#")) {
+        // Quote it.
+        stringValue = "#" + stringValue;
+      }
+      return stringValue;
+    } else {
+      return "#" + value;
+    }
+  }
+
+  public static VmResourceId parseString(String name) {
+    if (name.startsWith("##")) {
+      return VmResourceId.forName(name.substring(1));
+    } else if (name.startsWith("#")) {
+      return VmResourceId.forId(Long.parseLong(name.substring(1)));
+    } else {
+      return VmResourceId.forName(name);
+    }
+  }
+}