webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 244 insertions, 0 deletions

diff --git a/Source/WebInspectorUI/UserInterface/Workers/Formatter/FormatterContentBuilder.js b/Source/WebInspectorUI/UserInterface/Workers/Formatter/FormatterContentBuilder.js
new file mode 100644
index 000000000..a60a27e32
--- /dev/null
+++ b/Source/WebInspectorUI/UserInterface/Workers/Formatter/FormatterContentBuilder.js
@@ -0,0 +1,244 @@
+/*
+ * Copyright (C) 2013 Apple Inc. All rights reserved.
+ * Copyright (C) 2015 Tobias Reiss <tobi+webkit@basecode.de>
+ *
+ * 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.
+ */
+
+FormatterContentBuilder = class FormatterContentBuilder
+{
+    constructor(indentString)
+    {
+        this._originalContent = null;
+        this._formattedContent = [];
+        this._formattedContentLength = 0;
+
+        this._startOfLine = true;
+        this.lastTokenWasNewline = false;
+        this.lastTokenWasWhitespace = false;
+        this.lastNewlineAppendWasMultiple = false;
+
+        this._indent = 0;
+        this._indentString = indentString;
+        this._indentCache = ["", this._indentString];
+
+        this._mapping = {original: [0], formatted: [0]};
+        this._originalLineEndings = [];
+        this._formattedLineEndings = [];
+        this._originalOffset = 0;
+        this._formattedOffset = 0;
+
+        this._lastOriginalPosition = 0;
+        this._lastFormattedPosition = 0;
+    }
+
+    // Public
+
+    get originalContent()
+    {
+        return this._originalContent;
+    }
+
+    get formattedContent()
+    {
+        let formatted = this._formattedContent.join("");
+        console.assert(formatted.length === this._formattedContentLength);
+        return formatted;
+    }
+
+    get sourceMapData()
+    {
+        return {
+            mapping: this._mapping,
+            originalLineEndings: this._originalLineEndings,
+            formattedLineEndings: this._formattedLineEndings,
+        };
+    }
+
+    setOriginalContent(originalContent)
+    {
+        console.assert(!this._originalContent);
+        this._originalContent = originalContent;
+    }
+
+    setOriginalLineEndings(originalLineEndings)
+    {
+        console.assert(!this._originalLineEndings.length);
+        this._originalLineEndings = originalLineEndings;
+    }
+
+    appendToken(string, originalPosition)
+    {
+        if (this._startOfLine)
+            this._appendIndent();
+
+        this._addMappingIfNeeded(originalPosition);
+
+        this._append(string);
+        this._startOfLine = false;
+        this.lastTokenWasNewline = false;
+        this.lastTokenWasWhitespace = false;
+    }
+
+    appendSpace()
+    {
+        if (!this._startOfLine) {
+            this._append(" ");
+            this.lastTokenWasNewline = false;
+            this.lastTokenWasWhitespace = true;
+        }
+    }
+
+    appendNewline(force)
+    {
+        if ((!this.lastTokenWasNewline && !this._startOfLine) || force) {
+            if (this.lastTokenWasWhitespace)
+                this._popFormattedContent();
+            this._append("\n");
+            this._addFormattedLineEnding();
+            this._startOfLine = true;
+            this.lastTokenWasNewline = true;
+            this.lastTokenWasWhitespace = false;
+            this.lastNewlineAppendWasMultiple = false;
+        }
+    }
+
+    appendMultipleNewlines(newlines)
+    {
+        console.assert(newlines > 0);
+
+        let wasMultiple = newlines > 1;
+
+        while (newlines-- > 0)
+            this.appendNewline(true);
+
+        if (wasMultiple)
+            this.lastNewlineAppendWasMultiple = true;
+    }
+
+    removeLastNewline()
+    {
+        console.assert(this.lastTokenWasNewline);
+        console.assert(this._formattedContent.lastValue === "\n");
+        if (this.lastTokenWasNewline) {
+            this._popFormattedContent();
+            this._formattedLineEndings.pop();
+            this._startOfLine = false;
+            this.lastTokenWasNewline = false;
+            this.lastTokenWasWhitespace = false;
+        }
+    }
+
+    removeLastWhitespace()
+    {
+        console.assert(this.lastTokenWasWhitespace);
+        console.assert(this._formattedContent.lastValue === " ");
+        if (this.lastTokenWasWhitespace) {
+            this._popFormattedContent();
+            // No need to worry about `_startOfLine` and `lastTokenWasNewline`
+            // because `appendSpace` takes care of not adding whitespace
+            // to the beginning of a line.
+            this.lastTokenWasWhitespace = false;
+        }
+    }
+
+    indent()
+    {
+        ++this._indent;
+    }
+
+    dedent()
+    {
+        --this._indent;
+
+        console.assert(this._indent >= 0);
+        if (this._indent < 0)
+            this._indent = 0;
+    }
+
+    addOriginalLineEnding(originalPosition)
+    {
+        this._originalLineEndings.push(originalPosition);
+    }
+
+    finish()
+    {
+        this.appendNewline();
+    }
+
+    // Private
+
+    _popFormattedContent()
+    {
+        let removed = this._formattedContent.pop();
+        this._formattedContentLength -= removed.length;
+    }
+
+    _append(str)
+    {
+        this._formattedContent.push(str);
+        this._formattedContentLength += str.length;
+    }
+
+    _appendIndent()
+    {
+        // Indent is already in the cache.
+        if (this._indent < this._indentCache.length) {
+            this._append(this._indentCache[this._indent]);
+            return;
+        }
+
+        // Indent was not in the cache, fill up the cache up with what was needed.
+        let maxCacheIndent = 20;
+        let max = Math.min(this._indent, maxCacheIndent);
+        for (let i = this._indentCache.length; i <= max; ++i)
+            this._indentCache[i] = this._indentCache[i - 1] + this._indentString;
+
+        // Append indents as needed.
+        let indent = this._indent;
+        do {
+            if (indent >= maxCacheIndent)
+                this._append(this._indentCache[maxCacheIndent]);
+            else
+                this._append(this._indentCache[indent]);
+            indent -= maxCacheIndent;
+        } while (indent > 0);
+    }
+
+    _addMappingIfNeeded(originalPosition)
+    {
+        if (originalPosition - this._lastOriginalPosition === this._formattedContentLength - this._lastFormattedPosition)
+            return;
+
+        this._mapping.original.push(this._originalOffset + originalPosition);
+        this._mapping.formatted.push(this._formattedOffset + this._formattedContentLength);
+
+        this._lastOriginalPosition = originalPosition;
+        this._lastFormattedPosition = this._formattedContentLength;
+    }
+
+    _addFormattedLineEnding()
+    {
+        console.assert(this._formattedContent.lastValue === "\n");
+        this._formattedLineEndings.push(this._formattedContentLength - 1);
+    }
+};