diff options
Diffstat (limited to 'old/interpreter/scriptpreprocessor.cpp')
| -rw-r--r-- | old/interpreter/scriptpreprocessor.cpp | 256 |
1 files changed, 256 insertions, 0 deletions
diff --git a/old/interpreter/scriptpreprocessor.cpp b/old/interpreter/scriptpreprocessor.cpp new file mode 100644 index 0000000..42a413b --- /dev/null +++ b/old/interpreter/scriptpreprocessor.cpp @@ -0,0 +1,256 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of QtUiTest. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "scriptpreprocessor.h" +#include "qscriptsystemtest.h" + +#include <QScriptEngine> +#include <QScriptValue> +#include <QScriptValueIterator> +#include <QByteArray> + +ScriptPreprocessor::ScriptPreprocessor() +{ + QScriptEngine engine; + QScriptSystemTest::loadInternalScript("config.js", &engine); + + QScriptValue settings = engine.globalObject().property("preprocess"); + if (!settings.isObject()) return; + + /* The documentation for the following settings objects is in config.js */ + + { + QScriptValueIterator it(settings.property("functionAppends")); + while (it.hasNext()) { + it.next(); + functionAppends[it.name()] = it.value().toString(); + } + } +} + +void ScriptPreprocessor::preprocess(QString &script) +{ + QString out; + out.reserve(script.size()); + + bool in_singleline_comment = false; + bool in_multiline_comment = false; + bool in_singlequote_literal = false; + bool in_doublequote_literal = false; + + const char singlequote = '\''; + const char doublequote = '"'; + const char brace_open = '('; + const char brace_close = ')'; + const char curlybrace_open = '{'; + const char curlybrace_close = '}'; + const char newline = '\n'; + const char cr = '\r'; + const char backslash = '\\'; + const char forwardslash = '/'; + const char asterisk = '*'; + + QString identifier_chars = "_"; + for (char c = '0'; c <= '9'; ++c) identifier_chars.append(c); + for (char c = 'a'; c <= 'z'; ++c) identifier_chars.append(c); + for (char c = 'A'; c <= 'Z'; ++c) identifier_chars.append(c); + + int braces = 0; + int curlybraces = 0; + + QString function_append; + int function_append_braces = 0; + + for (int i = 0; i < script.count(); ++i) { + QChar c1 = script[i];//.toLatin1(); + QChar c2 = script[i+1];//.toLatin1(); // OK; QByteArray is always null-terminated. + + if (in_singleline_comment) { + if (newline == c1) { + in_singleline_comment = false; + out.append(c1); + continue; + } + out.append(c1); + continue; + } + + if (in_multiline_comment) { + if (asterisk == c1 && forwardslash == c2) { + in_multiline_comment = false; + out.append(c1); + out.append(c2); + ++i; + continue; + } + out.append(c1); + continue; + } + + if (in_singlequote_literal) { + if (backslash == c1) { + out.append(c1); + out.append(c2); + ++i; + continue; + } + if (singlequote == c1) { + in_singlequote_literal = false; + out.append(c1); + continue; + } + if (cr == c1 && newline == c2) { + out.append("\\n\'+\r\n\'"); + ++i; + continue; + } + if (newline == c1) { + out.append("\\n\'+\n\'"); + continue; + } + out.append(c1); + continue; + } + + if (in_doublequote_literal) { + if (backslash == c1) { + out.append(c1); + out.append(c2); + ++i; + continue; + } + if (doublequote == c1) { + in_doublequote_literal = false; + out.append(c1); + continue; + } + if (cr == c1 && newline == c2) { + out.append("\\n\"+\r\n\""); + ++i; + continue; + } + if (newline == c1) { + out.append("\\n\"+\n\""); + continue; + } + out.append(c1); + continue; + } + + switch(c1.toLatin1()) { + + case singlequote: + in_singlequote_literal = true; + out.append(c1); + continue; + + case doublequote: + in_doublequote_literal = true; + out.append(c1); + continue; + + case forwardslash: + out.append(c1); + if (c2 == forwardslash) { + in_singleline_comment = true; + out.append(c2); + ++i; + } + if (c2 == asterisk) { + in_multiline_comment = true; + out.append(c2); + ++i; + } + continue; + + case brace_open: + ++braces; + out.append(c1); + continue; + + case brace_close: + --braces; + out.append(c1); + if (!function_append.isEmpty() && function_append_braces == braces) { + out.append(function_append); + function_append = QString(); + } + continue; + + case curlybrace_open: + ++curlybraces; + out.append(c1); + continue; + + case curlybrace_close: + --curlybraces; + out.append(c1); + continue; + + default: + // Look ahead to next non-identifier character + int tok_len; + for (tok_len = 0; i + tok_len < script.count() && identifier_chars.contains(script[i+tok_len]); ++tok_len) {} + if (tok_len < 2) { + out.append(c1); + continue; + } + QString tok = script.mid(i, tok_len); + + // Apply preprocessing rules + + // 1. Function appends - text placed immediately after the closing + // bracket of a function invocation. + if (functionAppends.contains(tok)) { + function_append = functionAppends[tok]; + function_append_braces = braces; + } + + out.append(tok); + i += tok_len - 1; + continue; + } + } + + out.squeeze(); + + script = out; +} |