Use stack-generator and add Stacktrace#generateArtificially to utilize it. Fixes #95

Author: Eric Wendelin

bower.json

@@ -8,7 +8,8 @@
     ],
     "description": "Extract meaning from JS Errors",
     "dependencies": {
-        "error-stack-parser": "~0.1.0"
+        "error-stack-parser": "~0.1.0",
+        "stack-generator": "~0.1.0"
     },
     "devDependencies": {
         "jasmine": "~1.3.1",

component.json

@@ -4,9 +4,10 @@
     "repo": "stacktracejs/stacktrace.js",
     "main": "stacktrace.js",
     "scripts": [
-      "stacktrace.js"
+        "stacktrace.js"
     ],
     "dependencies": {
-        "error-stack-parser": "~0.1.0"
+        "error-stack-parser": "~0.1.0",
+        "stack-generator": "~0.1.0"
     }
 }

package.json

@@ -1,20 +1,17 @@
 {
-  "name": "stacktrace-js",
-  "description": "Framework-agnostic, micro-library for getting stack traces in all environments",
-  "author": "Eric Wendelin <me@eriwen.com> (http://www.eriwen.com)",
-  "version": "0.6.2",
-  "keywords": ["stack-trace", "cross-browser", "framework-agnostic", "client", "browser"],
-  "homepage": "http://stacktracejs.com",
-  "repository": {
-    "type": "git",
-    "url": "git://github.com/stacktracejs/stacktrace.js.git"
-  },
-  "main": "./stacktrace.js",
-  "engines": {
-    "node": "*"
-  },
-  "dependencies": {},
-  "devDependencies": {
-    "jshint": "0.9.x"
-  }
+    "name": "stacktrace-js",
+    "description": "Framework-agnostic, micro-library for getting stack traces in all environments",
+    "author": "Eric Wendelin <me@eriwen.com> (http://www.eriwen.com)",
+    "version": "0.6.2",
+    "keywords": ["stack-trace", "cross-browser", "framework-agnostic", "client", "browser"],
+    "homepage": "http://www.stacktracejs.com",
+    "repository": {
+        "type": "git",
+        "url": "git://github.com/stacktracejs/stacktrace.js.git"
+    },
+    "main": "./stacktrace.js",
+    "engines": {
+        "node": "*"
+    },
+    "dependencies": {}
 }

spec/jsTestDriver.conf

@@ -5,6 +5,7 @@ load:
   - ../bower_components/jasmine-jstd-adapter/src/JasmineAdapter.js
   - ../bower_components/stackframe/stackframe.js
   - ../bower_components/error-stack-parser/error-stack-parser.js
+  - ../bower_components/stack-generator/stack-generator.js
   - ../stacktrace.js
 test:
   - stacktrace-spec.js

spec/spec-runner.html

@@ -9,6 +9,7 @@
     <script type="text/javascript" src="../bower_components/jasmine/lib/jasmine-core/jasmine-html.js"></script>
     <script type="text/javascript" src="../bower_components/stackframe/stackframe.js"></script>
     <script type="text/javascript" src="../bower_components/error-stack-parser/error-stack-parser.js"></script>
+    <script type="text/javascript" src="../bower_components/stack-generator/stack-generator.js"></script>
 
     <script type="text/javascript" src="../stacktrace.js"></script>
 

spec/stacktrace-spec.js

@@ -34,9 +34,19 @@ describe('StackTrace', function () {
         });
     });
 
+    describe('#generateArtificially', function () {
+        var unit = new StackTrace();
+        it('gets stacktrace from current location', function testGenerateArtificially() {
+            var stackFrames = unit.generateArtificially().filter(function (stackFrame) {
+                return stackFrame.getFunctionName() && stackFrame.getFunctionName().indexOf('testGenerateArtificially') > -1;
+            });
+            expect(stackFrames.length).toEqual(1);
+        });
+    });
+
     describe('#withFilter', function () {
         var unit = new StackTrace();
-        xit('throws an error given input other than a function', function () {
+        it('throws an error given input other than a function', function () {
             expect(function () {
                 unit.withFilter('BOGUS')
             }).toThrow(new TypeError('Can only apply filter with a function'));

stacktrace.js

@@ -3,15 +3,13 @@
     'use strict';
     // Universal Module Definition (UMD) to support AMD, CommonJS/Node.js, Rhino, and browsers.
     if (typeof define === 'function' && define.amd) {
-        define(['error-stack-parser'], factory);
+        define(['error-stack-parser', 'stack-generator'], factory);
     } else if (typeof exports === 'object') {
-        module.exports = factory(require('error-stack-parser'));
+        module.exports = factory(require('error-stack-parser'), require('stack-generator'));
     } else {
-        root.StackTrace = factory(root.ErrorStackParser);
+        root.StackTrace = factory(root.ErrorStackParser, root.StackGenerator);
     }
-}(this, function () {
-    'use strict';
-
+}(this, function (ErrorStackParser, StackGenerator) {
     // { filter: fnRef
     //   sourceMap: ???
     //   cors: ???
@@ -25,6 +23,7 @@
     //      .withEnhancedFunctionNames()
     //      .withEnhancedSourceLocations()
     //      .withFilter(fn)
+    //      .withMaxStackSize(10)
     //      .withFormatter(fn)
     //      .instrument(fn)
     //      .get(opts) => Array[StackFrame]
@@ -41,7 +40,7 @@
         var target = {};
         var prop;
 
-        [first, second].forEach(function(obj) {
+        [first, second].forEach(function (obj) {
             for (prop in obj) {
                 if (obj.hasOwnProperty(prop)) {
                     target[prop] = obj[prop];
@@ -53,6 +52,14 @@
         return target;
     }
 
+    /**
+     * Return true if called from context within strict mode.
+     * @private
+     */
+    function _isStrictMode() {
+        return (eval("var __temp = null"), (typeof __temp === "undefined"));
+    }
+
     return function StackTrace() {
         // TODO: utils to facilitate automatic bug reporting
 
@@ -67,7 +74,11 @@
             try {
                 throw new Error("From StackTrace.get()");
             } catch (e) {
-                return this.fromError(e, _merge(this.options, opts));
+                if (e['stack'] || e['opera#sourceloc']) {
+                    return this.fromError(e, _merge(this.options, opts));
+                } else {
+                    return this.generateArtificially(_merge(this.options, opts));
+                }
             }
         };
 
@@ -92,6 +103,15 @@
             return stackframes;
         };
 
+        /**
+         * Use StackGenerator to generate a backtrace.
+         * @param opts Object options
+         * @returns Array[StackFrame]
+         */
+        this.generateArtificially = function generateArtificially(opts) {
+            return StackGenerator.backtrace(opts);
+        };
+
         this.withFilter = function withFilter(fn) {
             if (typeof fn !== 'function') {
                 throw new TypeError('Can only apply filter with a function')
@@ -104,11 +124,6 @@
             this.options.formatter = fn;
             return this;
         };
-
-        // I want to know when a specific function is called
-        this.instrument = function instrument(fnRef, opts) {};
-
-        this.deinstrument = function deinstrument(fnRef) {};
     }
 }));