webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 260 insertions, 0 deletions

diff --git a/Source/WebInspectorUI/UserInterface/Models/CallFrame.js b/Source/WebInspectorUI/UserInterface/Models/CallFrame.js
new file mode 100644
index 000000000..67778a6bc
--- /dev/null
+++ b/Source/WebInspectorUI/UserInterface/Models/CallFrame.js
@@ -0,0 +1,260 @@
+/*
+ * Copyright (C) 2013 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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.
+ */
+
+WebInspector.CallFrame = class CallFrame extends WebInspector.Object
+{
+    constructor(target, id, sourceCodeLocation, functionName, thisObject, scopeChain, nativeCode, programCode, isTailDeleted)
+    {
+        super();
+
+        console.assert(target instanceof WebInspector.Target);
+        console.assert(!sourceCodeLocation || sourceCodeLocation instanceof WebInspector.SourceCodeLocation);
+        console.assert(!thisObject || thisObject instanceof WebInspector.RemoteObject);
+        console.assert(!scopeChain || scopeChain instanceof Array);
+
+        this._target = target;
+        this._id = id || null;
+        this._sourceCodeLocation = sourceCodeLocation || null;
+        this._functionName = functionName || "";
+        this._thisObject = thisObject || null;
+        this._scopeChain = scopeChain || [];
+        this._nativeCode = nativeCode || false;
+        this._programCode = programCode || false;
+        this._isTailDeleted = isTailDeleted || false;
+    }
+
+    // Public
+
+    get target() { return this._target; }
+    get id() { return this._id; }
+    get sourceCodeLocation() { return this._sourceCodeLocation; }
+    get functionName() { return this._functionName; }
+    get nativeCode() { return this._nativeCode; }
+    get programCode() { return this._programCode; }
+    get thisObject() { return this._thisObject; }
+    get scopeChain() { return this._scopeChain; }
+    get isTailDeleted() { return this._isTailDeleted; }
+
+    saveIdentityToCookie()
+    {
+        // Do nothing. The call frame is torn down when the inspector closes, and
+        // we shouldn't restore call frame content views across debugger pauses.
+    }
+
+    collectScopeChainVariableNames(callback)
+    {
+        var result = {this: true, __proto__: null};
+
+        var pendingRequests = this._scopeChain.length;
+
+        function propertiesCollected(properties)
+        {
+            for (var i = 0; properties && i < properties.length; ++i)
+                result[properties[i].name] = true;
+
+            if (--pendingRequests)
+                return;
+
+            callback(result);
+        }
+
+        for (var i = 0; i < this._scopeChain.length; ++i)
+            this._scopeChain[i].objects[0].deprecatedGetAllProperties(propertiesCollected);
+    }
+
+    mergedScopeChain()
+    {
+        let mergedScopes = [];
+
+        // Scopes list goes from top/local (1) to bottom/global (5)
+        //   [scope1, scope2, scope3, scope4, scope5]
+        let scopes = this._scopeChain.slice();
+
+        // Merge similiar scopes. Some function call frames may have multiple
+        // top level closure scopes (one for `var`s one for `let`s) that can be
+        // combined to a single scope of variables. Go in reverse order so we
+        // merge the first two closure scopes with the same name. Also mark
+        // the first time we see a new name, so we know the base for the name.
+        //   [scope1&2, scope3, scope4, scope5]
+        //      foo      bar     GLE    global
+        let lastMarkedHash = null;
+        function markAsBaseIfNeeded(scope) {
+            if (!scope.hash)
+                return false;
+            if (scope.type !== WebInspector.ScopeChainNode.Type.Closure)
+                return false;
+            if (scope.hash === lastMarkedHash)
+                return false;
+            lastMarkedHash = scope.hash;
+            scope.__baseClosureScope = true;
+            return true;
+        }
+
+        function shouldMergeClosureScopes(youngScope, oldScope, lastMerge) {
+            if (!youngScope || !oldScope)
+                return false;
+
+            // Don't merge unknown locations.
+            if (!youngScope.hash || !oldScope.hash)
+                return false;
+
+            // Only merge closure scopes.
+            if (youngScope.type !== WebInspector.ScopeChainNode.Type.Closure)
+                return false;
+            if (oldScope.type !== WebInspector.ScopeChainNode.Type.Closure)
+                return false;
+
+            // Don't merge if they are not the same.
+            if (youngScope.hash !== oldScope.hash)
+                return false;
+
+            // Don't merge if there was already a merge.
+            if (lastMerge && youngScope.hash === lastMerge.hash)
+                return false;
+
+            return true;
+        }
+
+        let lastScope = null;
+        let lastMerge = null;
+        for (let i = scopes.length - 1; i >= 0; --i) {
+            let scope = scopes[i];
+            markAsBaseIfNeeded(scope);
+            if (shouldMergeClosureScopes(scope, lastScope, lastMerge)) {
+                console.assert(lastScope.__baseClosureScope);
+                let type = WebInspector.ScopeChainNode.Type.Closure;
+                let objects = lastScope.objects.concat(scope.objects);
+                let merged = new WebInspector.ScopeChainNode(type, objects, scope.name, scope.location);
+                merged.__baseClosureScope = true;
+                console.assert(objects.length === 2);
+
+                mergedScopes.pop(); // Remove the last.
+                mergedScopes.push(merged); // Add the merged scope.
+
+                lastMerge = merged;
+                lastScope = null;
+            } else {
+                mergedScopes.push(scope);
+
+                lastMerge = null;
+                lastScope = scope;
+            }
+        }
+
+        mergedScopes = mergedScopes.reverse();
+
+        // Mark the first Closure as Local if the name matches this call frame.
+        for (let scope of mergedScopes) {
+            if (scope.type === WebInspector.ScopeChainNode.Type.Closure) {
+                if (scope.name === this._functionName)
+                    scope.convertToLocalScope();
+                break;
+            }
+        }
+
+        return mergedScopes;
+    }
+
+    // Static
+
+    static functionNameFromPayload(payload)
+    {
+        let functionName = payload.functionName;
+        if (functionName === "global code")
+            return WebInspector.UIString("Global Code");
+        if (functionName === "eval code")
+            return WebInspector.UIString("Eval Code");
+        if (functionName === "module code")
+            return WebInspector.UIString("Module Code");
+        return functionName;
+    }
+
+    static programCodeFromPayload(payload)
+    {
+        return payload.functionName.endsWith(" code");
+    }
+
+    static fromDebuggerPayload(target, payload, scopeChain, sourceCodeLocation)
+    {
+        let id = payload.callFrameId;
+        let thisObject = WebInspector.RemoteObject.fromPayload(payload.this, target);
+        let functionName = WebInspector.CallFrame.functionNameFromPayload(payload);
+        let nativeCode = false;
+        let programCode = WebInspector.CallFrame.programCodeFromPayload(payload);
+        let isTailDeleted = payload.isTailDeleted;
+
+        if (sourceCodeLocation && isWebInspectorConsoleEvaluationScript(sourceCodeLocation.sourceCode.sourceURL)) {
+            functionName = WebInspector.UIString("Console Evaluation");
+            programCode = true;
+        }
+
+        return new WebInspector.CallFrame(target, id, sourceCodeLocation, functionName, thisObject, scopeChain, nativeCode, programCode, isTailDeleted);
+    }
+
+    static fromPayload(target, payload)
+    {
+        console.assert(payload);
+
+        let {url, scriptId} = payload;
+        let nativeCode = false;
+        let sourceCodeLocation = null;
+        let functionName = WebInspector.CallFrame.functionNameFromPayload(payload);
+        let programCode = WebInspector.CallFrame.programCodeFromPayload(payload);
+
+        if (url === "[native code]") {
+            nativeCode = true;
+            url = null;
+        } else if (url || scriptId) {
+            let sourceCode = null;
+            if (scriptId) {
+                sourceCode = WebInspector.debuggerManager.scriptForIdentifier(scriptId, target);
+                if (sourceCode && sourceCode.resource)
+                    sourceCode = sourceCode.resource;
+            }
+            if (!sourceCode)
+                sourceCode = WebInspector.frameResourceManager.resourceForURL(url);
+            if (!sourceCode)
+                sourceCode = WebInspector.debuggerManager.scriptsForURL(url, target)[0];
+
+            if (sourceCode) {
+                // The lineNumber is 1-based, but we expect 0-based.
+                let lineNumber = payload.lineNumber - 1;
+                sourceCodeLocation = sourceCode.createLazySourceCodeLocation(lineNumber, payload.columnNumber);
+            } else {
+                // Treat this as native code if we were unable to find a source.
+                console.assert(!url, "We should have detected source code for something with a url");
+                nativeCode = true;
+                url = null;
+            }
+        }
+
+        if (sourceCodeLocation && isWebInspectorConsoleEvaluationScript(sourceCodeLocation.sourceCode.sourceURL)) {
+            functionName = WebInspector.UIString("Console Evaluation");
+            programCode = true;
+        }
+
+        return new WebInspector.CallFrame(target, null, sourceCodeLocation, functionName, null, null, nativeCode, programCode);
+    }
+};