From 1bf1084f2b10c3b47fd1a588d85d21ed0eb41d0c Mon Sep 17 00:00:00 2001
From: Lorry Tar Creator <lorry-tar-importer@lorry>
Date: Tue, 27 Jun 2017 06:07:23 +0000
Subject: webkitgtk-2.16.5

---
 .../UserInterface/Models/LazySourceCodeLocation.js | 112 +++++++++++++++++++++
 1 file changed, 112 insertions(+)
 create mode 100644 Source/WebInspectorUI/UserInterface/Models/LazySourceCodeLocation.js

(limited to 'Source/WebInspectorUI/UserInterface/Models/LazySourceCodeLocation.js')

diff --git a/Source/WebInspectorUI/UserInterface/Models/LazySourceCodeLocation.js b/Source/WebInspectorUI/UserInterface/Models/LazySourceCodeLocation.js
new file mode 100644
index 000000000..6f1a90ad7
--- /dev/null
+++ b/Source/WebInspectorUI/UserInterface/Models/LazySourceCodeLocation.js
@@ -0,0 +1,112 @@
+/*
+ * Copyright (C) 2014 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.
+ */
+
+// FIXME: Investigate folding this into SourceCodeLocation proper so it can always be as lazy as possible.
+
+// Lazily compute the full SourceCodeLocation information only when such information is needed.
+//  - raw information doesn't require initialization, we have that information
+//  - formatted information does require initialization, done by overriding public APIs.
+//  - display information does require initialization, done by overriding private funnel API resolveMappedLocation.
+
+WebInspector.LazySourceCodeLocation = class LazySourceCodeLocation extends WebInspector.SourceCodeLocation
+{
+    constructor(sourceCode, lineNumber, columnNumber)
+    {
+        super(null, lineNumber, columnNumber);
+
+        console.assert(sourceCode);
+
+        this._initialized = false;
+        this._lazySourceCode = sourceCode;
+    }
+
+    // Public
+
+    isEqual(other)
+    {
+        if (!other)
+            return false;
+        return this._lazySourceCode === other._sourceCode && this._lineNumber === other._lineNumber && this._columnNumber === other._columnNumber;
+    }
+
+    get sourceCode()
+    {
+        return this._lazySourceCode;
+    }
+
+    set sourceCode(sourceCode)
+    {
+        // Getter and setter must be provided together.
+        this.setSourceCode(sourceCode);
+    }
+
+    get formattedLineNumber()
+    {
+        this._lazyInitialization();
+        return this._formattedLineNumber;
+    }
+
+    get formattedColumnNumber()
+    {
+        this._lazyInitialization();
+        return this._formattedColumnNumber;
+    }
+
+    formattedPosition()
+    {
+        this._lazyInitialization();
+        return new WebInspector.SourceCodePosition(this._formattedLineNumber, this._formattedColumnNumber);
+    }
+
+    hasFormattedLocation()
+    {
+        this._lazyInitialization();
+        return super.hasFormattedLocation();
+    }
+
+    hasDifferentDisplayLocation()
+    {
+        this._lazyInitialization();
+        return super.hasDifferentDisplayLocation();
+    }
+
+    // Protected
+
+    resolveMappedLocation()
+    {
+        this._lazyInitialization();
+        super.resolveMappedLocation();
+    }
+
+    // Private
+
+    _lazyInitialization()
+    {
+        if (!this._initialized) {
+            this._initialized = true;
+            this.sourceCode = this._lazySourceCode;
+        }
+    }
+};
-- 
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