Debugger: add ability to set script source from within OnBeforeCompile.

test/mjsunit/debug-set-script-source.js

Index: test/mjsunit/debug-set-script-source.js
diff --git a/test/mjsunit/debug-set-script-source.js b/test/mjsunit/debug-set-script-source.js
new file mode 100644
index 0000000000000000000000000000000000000000..34ae8488a4de608543c543555e11236e1c65726e
--- /dev/null
+++ b/test/mjsunit/debug-set-script-source.js
@@ -0,0 +1,64 @@
+// Copyright 2012 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Flags: --expose-debug-as debug
+// Get the Debug object exposed from the debug context global object.
+Debug = debug.Debug
+
+var script_number = 0;
+var script_names = [];
+var exception = null;
+
+function listener(event, exec_state, event_data, data) {
+  if (event == Debug.DebugEvent.BeforeCompile) {
+    event_data.script().setSource(event_data.script().source() +
+        " //@ sourceURL=proper_location_" + (++script_number));
+  } else if (event == Debug.DebugEvent.AfterCompile) {
+    try {
+      event_data.script().setSource("a=1 //@ sourceURL=wrong_location");
+    } catch(e) {
+      exception = e;
+    }
+    script_names.push(event_data.script().name());
+  }
+};
+
+
+// Add the debug event listener.
+Debug.setListener(listener);
+
+// Compile different sources.
+eval('a=1');
+eval('(function(){})');
+
+assertEquals(2, script_names.length);
+assertEquals("proper_location_1", script_names[0]);
+assertEquals("proper_location_2", script_names[1]);
+
+assertEquals("illegal access", exception);
+
+Debug.setListener(null);