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Diffstat (limited to 'src/libs/cplusplus/pp-engine.h')
| -rw-r--r-- | src/libs/cplusplus/pp-engine.h | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/src/libs/cplusplus/pp-engine.h b/src/libs/cplusplus/pp-engine.h new file mode 100644 index 0000000000..c909ffab3a --- /dev/null +++ b/src/libs/cplusplus/pp-engine.h @@ -0,0 +1,231 @@ +/*************************************************************************** +** +** This file is part of Qt Creator +** +** Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). +** +** Contact: Qt Software Information (qt-info@nokia.com) +** +** +** Non-Open Source Usage +** +** Licensees may use this file in accordance with the Qt Beta Version +** License Agreement, Agreement version 2.2 provided with the Software or, +** alternatively, in accordance with the terms contained in a written +** agreement between you and Nokia. +** +** GNU General Public License Usage +** +** Alternatively, this file may be used under the terms of the GNU General +** Public License versions 2.0 or 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the packaging +** of this file. Please review the following information to ensure GNU +** General Public Licensing requirements will be met: +** +** http://www.fsf.org/licensing/licenses/info/GPLv2.html and +** http://www.gnu.org/copyleft/gpl.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt GPL Exception +** version 1.2, included in the file GPL_EXCEPTION.txt in this package. +** +***************************************************************************/ +/* + Copyright 2005 Roberto Raggi <roberto@kdevelop.org> + + Permission to use, copy, modify, distribute, and sell this software and its + documentation for any purpose is hereby granted without fee, provided that + the above copyright notice appear in all copies and that both that + copyright notice and this permission notice appear in supporting + documentation. + + The above copyright notice and this permission notice shall be included in + all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + KDEVELOP TEAM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef PP_ENGINE_H +#define PP_ENGINE_H + +#include "pp-client.h" + +#include <Token.h> +#include <QVector> + +namespace CPlusPlus { + class Token; +} + +namespace CPlusPlus { + + struct Value + { + enum Kind { + Kind_Long, + Kind_ULong, + }; + + Kind kind; + + union { + long l; + unsigned long ul; + }; + + + Value() + : kind(Kind_Long), l(0) + { } + + inline bool is_ulong () const + { return kind == Kind_ULong; } + + inline void set_ulong (unsigned long v) + { + ul = v; + kind = Kind_ULong; + } + + inline void set_long (long v) + { + l = v; + kind = Kind_Long; + } + + inline bool is_zero () const + { return l == 0; } + +#define PP_DEFINE_BIN_OP(name, op) \ + inline Value operator op(const Value &other) const \ + { \ + Value v = *this; \ + if (v.is_ulong () || other.is_ulong ()) \ + v.set_ulong (v.ul op other.ul); \ + else \ + v.set_long (v.l op other.l); \ + return v; \ + } + + PP_DEFINE_BIN_OP(op_add, +) + PP_DEFINE_BIN_OP(op_sub, -) + PP_DEFINE_BIN_OP(op_mult, *) + PP_DEFINE_BIN_OP(op_div, /) + PP_DEFINE_BIN_OP(op_mod, %) + PP_DEFINE_BIN_OP(op_lhs, <<) + PP_DEFINE_BIN_OP(op_rhs, >>) + PP_DEFINE_BIN_OP(op_lt, <) + PP_DEFINE_BIN_OP(op_gt, >) + PP_DEFINE_BIN_OP(op_le, <=) + PP_DEFINE_BIN_OP(op_ge, >=) + PP_DEFINE_BIN_OP(op_eq, ==) + PP_DEFINE_BIN_OP(op_ne, !=) + PP_DEFINE_BIN_OP(op_bit_and, &) + PP_DEFINE_BIN_OP(op_bit_or, |) + PP_DEFINE_BIN_OP(op_bit_xor, ^) + PP_DEFINE_BIN_OP(op_and, &&) + PP_DEFINE_BIN_OP(op_or, ||) + +#undef PP_DEFINE_BIN_OP + }; + + class CPLUSPLUS_EXPORT pp + { + Client *client; + Environment &env; + MacroExpander expand; + + enum { MAX_LEVEL = 512 }; + + bool _skipping[MAX_LEVEL]; // ### move in state + bool _true_test[MAX_LEVEL]; // ### move in state + int iflevel; // ### move in state + + enum PP_DIRECTIVE_TYPE + { + PP_UNKNOWN_DIRECTIVE, + PP_DEFINE, + PP_INCLUDE, + PP_INCLUDE_NEXT, + PP_ELIF, + PP_ELSE, + PP_ENDIF, + PP_IF, + PP_IFDEF, + PP_IFNDEF, + PP_UNDEF + }; + + typedef const CPlusPlus::Token *TokenIterator; + + struct State { + QByteArray source; + QVector<CPlusPlus::Token> tokens; + TokenIterator dot; + }; + + QList<State> _savedStates; + + State state() const; + void pushState(const State &state); + void popState(); + + QByteArray _source; + QVector<CPlusPlus::Token> _tokens; + TokenIterator _dot; + + State createStateFromSource(const QByteArray &source) const; + + public: + pp(Client *client, Environment &env); + + void operator()(const QByteArray &filename, + const QByteArray &source, + QByteArray *result); + + void operator()(const QByteArray &source, + QByteArray *result); + + private: + void resetIfLevel(); + bool testIfLevel(); + int skipping() const; + + PP_DIRECTIVE_TYPE classifyDirective(const QByteArray &directive) const; + + Value evalExpression(TokenIterator firstToken, + TokenIterator lastToken, + const QByteArray &source) const; + + QVector<CPlusPlus::Token> tokenize(const QByteArray &text) const; + + const char *startOfToken(const CPlusPlus::Token &token) const; + const char *endOfToken(const CPlusPlus::Token &token) const; + + QByteArray tokenSpell(const CPlusPlus::Token &token) const; + QByteArray tokenText(const CPlusPlus::Token &token) const; // does a deep copy + + void processDirective(TokenIterator dot, TokenIterator lastToken); + void processInclude(bool skipCurrentPath, + TokenIterator dot, TokenIterator lastToken, + bool acceptMacros = true); + void processDefine(TokenIterator dot, TokenIterator lastToken); + void processIf(TokenIterator dot, TokenIterator lastToken); + void processElse(TokenIterator dot, TokenIterator lastToken); + void processElif(TokenIterator dot, TokenIterator lastToken); + void processEndif(TokenIterator dot, TokenIterator lastToken); + void processIfdef(bool checkUndefined, + TokenIterator dot, TokenIterator lastToken); + void processUndef(TokenIterator dot, TokenIterator lastToken); + + bool isQtReservedWord(const QByteArray &name) const; + }; + +} // namespace CPlusPlus + +#endif // PP_ENGINE_H |