webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 197 insertions, 0 deletions

diff --git a/Source/WebInspectorUI/UserInterface/Controllers/BreakpointLogMessageLexer.js b/Source/WebInspectorUI/UserInterface/Controllers/BreakpointLogMessageLexer.js
new file mode 100644
index 000000000..071704a6b
--- /dev/null
+++ b/Source/WebInspectorUI/UserInterface/Controllers/BreakpointLogMessageLexer.js
@@ -0,0 +1,197 @@
+/*
+ * Copyright (C) 2016 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.BreakpointLogMessageLexer = class BreakpointLogMessageLexer extends WebInspector.Object
+{
+    constructor()
+    {
+        super();
+
+        this._stateFunctions = {
+            [WebInspector.BreakpointLogMessageLexer.State.Expression]: this._expression,
+            [WebInspector.BreakpointLogMessageLexer.State.PlainText]: this._plainText,
+            [WebInspector.BreakpointLogMessageLexer.State.PossiblePlaceholder]: this._possiblePlaceholder,
+            [WebInspector.BreakpointLogMessageLexer.State.RegExpOrStringLiteral]: this._regExpOrStringLiteral,
+        };
+
+        this.reset();
+    }
+
+    // Public
+
+    tokenize(input)
+    {
+        this.reset();
+        this._input = input;
+
+        while (this._index < this._input.length) {
+            let stateFunction = this._stateFunctions[this._states.lastValue];
+            console.assert(stateFunction);
+            if (!stateFunction) {
+                this.reset();
+                return null;
+            }
+
+            stateFunction.call(this);
+        }
+
+        // Needed for trailing plain text.
+        this._finishPlainText();
+
+        return this._tokens;
+    }
+
+    reset()
+    {
+        this._input = "";
+        this._buffer = "";
+
+        this._index = 0;
+        this._states = [WebInspector.BreakpointLogMessageLexer.State.PlainText];
+        this._literalStartCharacter = "";
+        this._curlyBraceDepth = 0;
+        this._tokens = [];
+    }
+
+    // Private
+
+     _finishPlainText()
+    {
+        this._appendToken(WebInspector.BreakpointLogMessageLexer.TokenType.PlainText);
+    }
+
+    _finishExpression()
+    {
+        this._appendToken(WebInspector.BreakpointLogMessageLexer.TokenType.Expression);
+    }
+
+    _appendToken(type)
+    {
+        if (!this._buffer)
+            return;
+
+        this._tokens.push({type, data: this._buffer});
+        this._buffer = "";
+    }
+
+    _consume()
+    {
+        console.assert(this._index < this._input.length);
+
+        let character = this._peek();
+        this._index++;
+        return character;
+    }
+
+    _peek()
+    {
+        return this._input[this._index] || null;
+    }
+
+    // States
+
+    _expression()
+    {
+        let character = this._consume();
+
+        if (character === "}") {
+            if (this._curlyBraceDepth === 0) {
+                this._finishExpression();
+
+                console.assert(this._states.lastValue === WebInspector.BreakpointLogMessageLexer.State.Expression);
+                this._states.pop();
+                return;
+            }
+
+            this._curlyBraceDepth--;
+        }
+
+        this._buffer += character;
+
+        if (character === "/" || character === "\"" || character === "'") {
+            this._literalStartCharacter = character;
+            this._states.push(WebInspector.BreakpointLogMessageLexer.State.RegExpOrStringLiteral);
+        } else if (character === "{")
+            this._curlyBraceDepth++;
+    }
+
+    _plainText()
+    {
+        let character = this._peek();
+
+        if (character === "$")
+            this._states.push(WebInspector.BreakpointLogMessageLexer.State.PossiblePlaceholder);
+        else {
+            this._buffer += character;
+            this._consume();
+        }
+    }
+
+    _possiblePlaceholder()
+    {
+        let character = this._consume();
+        console.assert(character === "$");
+        let nextCharacter = this._peek();
+
+        console.assert(this._states.lastValue === WebInspector.BreakpointLogMessageLexer.State.PossiblePlaceholder);
+        this._states.pop();
+
+        if (nextCharacter === "{") {
+            this._finishPlainText();
+            this._consume();
+            this._states.push(WebInspector.BreakpointLogMessageLexer.State.Expression);
+        } else
+            this._buffer += character;
+    }
+
+    _regExpOrStringLiteral()
+    {
+        let character = this._consume();
+        this._buffer += character;
+
+        if (character === "\\") {
+            if (this._peek() !== null)
+                this._buffer += this._consume();
+            return;
+        }
+
+        if (character === this._literalStartCharacter) {
+            console.assert(this._states.lastValue === WebInspector.BreakpointLogMessageLexer.State.RegExpOrStringLiteral);
+            this._states.pop();
+        }
+    }
+};
+
+WebInspector.BreakpointLogMessageLexer.State = {
+    Expression: Symbol("expression"),
+    PlainText: Symbol("plain-text"),
+    PossiblePlaceholder: Symbol("possible-placeholder"),
+    RegExpOrStringLiteral: Symbol("regexp-or-string-literal"),
+};
+
+WebInspector.BreakpointLogMessageLexer.TokenType = {
+    PlainText: "token-type-plain-text",
+    Expression: "token-type-expression",
+};