Print correct line number for Error thrown inside eval.

R=rossberg@chromium.org
BUG=v8:1914
TEST=eval-stack-trace.js

Review URL: https://chromiumcodereview.appspot.com/10565002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11851 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/messages.js

@@ -921,17 +921,25 @@ function CallSiteToString() {
   var fileLocation = "";
   if (this.isNative()) {
     fileLocation = "native";
-  } else if (this.isEval()) {
-    fileName = this.getScriptNameOrSourceURL();
-    if (!fileName) {
-      fileLocation = this.getEvalOrigin();
-    }
   } else {
-    fileName = this.getFileName();
-  }
+    if (this.isEval()) {
+      fileName = this.getScriptNameOrSourceURL();
+      if (!fileName) {
+        fileLocation = this.getEvalOrigin();
+        fileLocation += ", ";  // Expecting source position to follow.
+      }
+    } else {
+      fileName = this.getFileName();
+    }
 
-  if (fileName) {
-    fileLocation += fileName;
+    if (fileName) {
+      fileLocation += fileName;
+    } else {
+      // Source code does not originate from a file and is not native, but we
+      // can still get the source position inside the source string, e.g. in
+      // an eval string.
+      fileLocation += "<anonymous>";
+    }
     var lineNumber = this.getLineNumber();
     if (lineNumber != null) {
       fileLocation += ":" + lineNumber;
@@ -942,9 +950,6 @@ function CallSiteToString() {
     }
   }
 
-  if (!fileLocation) {
-    fileLocation = "unknown source";
-  }
   var line = "";
   var functionName = this.getFunctionName();
   var addSuffix = true;

test/mjsunit/eval-stack-trace.js

+// 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.
+
+// Return the stack frames of an Error object.
+Error.prototype.getFrames = function() {
+  Error.prepareStackTrace = function(error, frames) {
+    return frames;
+  }
+  var frames = this.stack;
+  Error.prepareStackTrace = undefined;
+  return frames;
+}
+
+String.prototype.contains = function(pattern) {
+  return this.indexOf(pattern) > -1;
+}
+
+// Check for every frame that a certain method returns the
+// expected value for every frame.
+Array.prototype.verifyEquals = function(frames, func_name) {
+  this.forEach(
+    function(element, index) {
+      var frame = frames[index];
+      if (element === null) return;
+      assertEquals(element, (frame[func_name])());
+    }
+  );
+}
+
+// Check for every frame that a certain method has a return value
+// that contains the expected pattern for every frame.
+Array.prototype.verifyContains = function(frames, func_name) {
+  this.forEach(
+    function(element, index) {
+      var frame = frames[index];
+      if (element === null) return;
+      assertTrue((frame[func_name])().contains(element));
+    }
+  );
+}
+
+// Check for every frame that a certain method returns undefined
+// when expected.
+Array.prototype.verifyUndefined = function(frames, func_name) {
+  this.forEach(
+    function(element, index) {
+      var frame = frames[index];
+      if (element === null) return;
+      assertEquals(element, (frame[func_name])() === undefined);
+    }
+  );
+}
+
+
+// Simple eval.
+var code1 = "function f() {        \n" +
+            "  throw new Error(3); \n" +  // Line 2
+            "}                     \n" +
+            "f();                  \n";   // Line 4
+
+function g() {
+  eval(code1);
+}
+
+try {
+  g();
+} catch (e) {
+  // We expect something like
+  //   f (eval at g (eval-stack.js:87:8), <anonymous>:2:9)
+  //   eval (eval at g (eval-stack.js:87:8), <anonymous>:4:1)
+  //   g (eval-stack.js:87:3)
+  //   eval-stack.js:94:3
+  var frames = e.getFrames();
+  assertEquals(4, frames.length);
+  ["f", "eval", "g"]
+      .verifyEquals(frames, "getFunctionName");
+  [2, 4]
+      .verifyEquals(frames, "getLineNumber");
+  ["<anonymous>:2:", "<anonymous>:4:"]
+      .verifyContains(frames, "toString");
+  [true, true, false, false]
+      .verifyUndefined(frames, "getFileName");
+  ["eval at g", "eval at g"]
+      .verifyContains(frames, "getEvalOrigin");
+}
+
+
+// Nested eval.
+var code2 = "function h() {        \n" +
+            "  // Empty            \n" +
+            "  eval(code1);        \n" +  // Line 3
+            "}                     \n" +
+            "h();                  \n";   // Line 5
+
+try {
+  eval(code2);
+} catch (e) {
+  // We expect something like
+  //   f (eval at h (eval at <anonymous> (eval-stack.js:116:8)),
+  //       <anonymous>:2:9)
+  //   eval (eval at h (eval at <anonymous> (eval-stack.js:116:8)),
+  //       <anonymous>:4:1)
+  //   h (eval at <anonymous> (eval-stack.js:116:8), <anonymous>:3:3)
+  //   eval (eval at <anonymous> (eval-stack.js:116:8), <anonymous>:5:1)
+  //   eval-stack.js:116:3
+  var frames = e.getFrames();
+  assertEquals(5, frames.length);
+  ["f", "eval", "h", "eval"]
+      .verifyEquals(frames, "getFunctionName");
+  [2, 4, 3, 5]
+      .verifyEquals(frames, "getLineNumber");
+  ["<anonymous>:2:", "<anonymous>:4:", "<anonymous>:3:", "<anonymous>:5:"]
+      .verifyContains(frames, "toString");
+  [true, true, true, true, false]
+      .verifyUndefined(frames, "getFileName");
+  ["eval at h (eval at <anonymous> (",
+   "eval at h (eval at <anonymous> (",
+   "eval at <anonymous> (",
+   "eval at <anonymous> ("]
+      .verifyContains(frames, "getEvalOrigin");
+}
+
+
+// Nested eval calling through non-eval defined function.
+var code3 = "function h() {        \n" +
+            "  // Empty            \n" +
+            "  g();                \n" +  // Line 3
+            "}                     \n" +
+            "h();                  \n";   // Line 5
+
+try {
+  eval(code3);
+} catch (e) {
+  // We expect something like
+  //   f (eval at g (test.js:83:8), <anonymous>:2:9)
+  //   eval (eval at g (test.js:83:8), <anonymous>:4:1)
+  //   g (test.js:83:3)
+  //   h (eval at <anonymous> (test.js:149:8), <anonymous>:3:3)
+  //   eval (eval at <anonymous> (test.js:149:8), <anonymous>:5:1)
+  //   test.js:149:3
+  var frames = e.getFrames();
+  assertEquals(6, frames.length);
+  ["f", "eval", "g", "h", "eval"]
+      .verifyEquals(frames, "getFunctionName");
+  [2, 4, null, 3, 5]
+      .verifyEquals(frames, "getLineNumber");
+  ["<anonymous>:2:", "<anonymous>:4:", null, "<anonymous>:3:", "<anonymous>:5:"]
+      .verifyContains(frames, "toString");
+  [true, true, false, true, true, false]
+      .verifyUndefined(frames, "getFileName");
+  ["eval at g (",
+   "eval at g (",
+   null,
+   "eval at <anonymous> (",
+   "eval at <anonymous> ("]
+      .verifyContains(frames, "getEvalOrigin");
+}
+
+
+// Calling function defined in eval.
+eval("function f() {               \n" +
+     "  throw new Error(3);        \n" +
+     "}                            \n");
+
+try {
+  f();
+} catch (e) {
+  // We expect something like
+  //   f (eval at <anonymous> (test.js:182:40), <anonymous>:2:9)
+  //   test.js:186:3
+  var frames = e.getFrames();
+  assertEquals(2, frames.length);
+  ["f"].verifyEquals(frames, "getFunctionName");
+  [2].verifyEquals(frames, "getLineNumber");
+  ["<anonymous>:2:"].verifyContains(frames, "toString");
+  [true, false].verifyUndefined(frames, "getFileName");
+  ["eval at <anonymous> ("].verifyContains(frames, "getEvalOrigin");
+}
+