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Diffstat (limited to 'sources/shiboken2/ApiExtractor/parser/rpp/pp-engine.h')
| -rw-r--r-- | sources/shiboken2/ApiExtractor/parser/rpp/pp-engine.h | 288 |
1 files changed, 288 insertions, 0 deletions
diff --git a/sources/shiboken2/ApiExtractor/parser/rpp/pp-engine.h b/sources/shiboken2/ApiExtractor/parser/rpp/pp-engine.h new file mode 100644 index 000000000..689d7720e --- /dev/null +++ b/sources/shiboken2/ApiExtractor/parser/rpp/pp-engine.h @@ -0,0 +1,288 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Copyright (C) 2002-2005 Roberto Raggi <roberto@kdevelop.org> +** Contact: https://www.qt.io/licensing/ +** +** This file is part of PySide2. +** +** $QT_BEGIN_LICENSE:GPL-EXCEPT$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3 as published by the Free Software +** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef PP_ENGINE_H +#define PP_ENGINE_H + +#include <string> +#include <vector> +#include "pp-scanner.h" +#include "pp-macro-expander.h" +#include "pp-environment.h" + +namespace rpp +{ + +struct Value { + Value() : kind(Kind_Long), l(0) {} + + enum Kind { + Kind_Long, + Kind_ULong, + }; + + Kind kind; + + union { + long l; + unsigned long ul; + }; + + 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 &name (const Value &other) \ + { \ + if (is_ulong () || other.is_ulong ()) \ + set_ulong (ul op other.ul); \ + else \ + set_long (l op other.l); \ + return *this; \ + } + + 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 pp +{ + pp_environment &env; + pp_macro_expander expand; + pp_skip_identifier skip_identifier; + pp_skip_comment_or_divop skip_comment_or_divop; + pp_skip_blanks skip_blanks; + pp_skip_number skip_number; + std::vector<std::string> include_paths; + std::string _M_current_text; + + enum { MAX_LEVEL = 512 }; + int _M_skipping[MAX_LEVEL]; + int _M_true_test[MAX_LEVEL]; + int iflevel; + + union { + long token_value; + unsigned long token_uvalue; + std::string *token_text; + }; + + enum INCLUDE_POLICY { + INCLUDE_GLOBAL, + INCLUDE_LOCAL + }; + + enum TOKEN_TYPE { + TOKEN_NUMBER = 1000, + TOKEN_UNUMBER, + TOKEN_IDENTIFIER, + TOKEN_DEFINED, + TOKEN_LT_LT, + TOKEN_LT_EQ, + TOKEN_GT_GT, + TOKEN_GT_EQ, + TOKEN_EQ_EQ, + TOKEN_NOT_EQ, + TOKEN_OR_OR, + TOKEN_AND_AND, + }; + + enum PP_DIRECTIVE_TYPE { + PP_UNKNOWN_DIRECTIVE, + PP_UNNAMED_DIRECTIVE, + PP_DEFINE, + PP_INCLUDE, + PP_INCLUDE_NEXT, + PP_ELIF, + PP_ELSE, + PP_ENDIF, + PP_IF, + PP_IFDEF, + PP_IFNDEF, + PP_UNDEF, + PP_PRAGMA, + PP_ERROR, + PP_WARNING + }; + +public: + pp(pp_environment &__env); + + inline std::back_insert_iterator<std::vector<std::string> > include_paths_inserter(); + + inline void push_include_path(std::string const &__path); + + inline std::vector<std::string>::iterator include_paths_begin(); + inline std::vector<std::string>::iterator include_paths_end(); + + inline std::vector<std::string>::const_iterator include_paths_begin() const; + inline std::vector<std::string>::const_iterator include_paths_end() const; + + template <typename _InputIterator> + inline _InputIterator eval_expression(_InputIterator __first, _InputIterator __last, Value *result); + + template <typename _OutputIterator> + void file(std::string const &filename, _OutputIterator __result); + + template <typename _OutputIterator> + void file(FILE *fp, _OutputIterator __result); + + template <typename _InputIterator, typename _OutputIterator> + void operator()(_InputIterator __first, _InputIterator __last, _OutputIterator __result); + +private: + inline bool file_isdir(std::string const &__filename) const; + inline bool file_exists(std::string const &__filename) const; + FILE *find_include_file(std::string const &__filename, std::string *__filepath, + INCLUDE_POLICY __include_policy, bool __skip_current_path = false) const; + + inline int skipping() const; + bool test_if_level(); + + inline std::string fix_file_path(std::string const &filename) const; + inline bool is_absolute(std::string const &filename) const; + + PP_DIRECTIVE_TYPE find_directive(char const *__directive, std::size_t __size) const; + + template <typename _InputIterator> + bool find_header_protection(_InputIterator __first, _InputIterator __last, std::string *__prot); + + template <typename _InputIterator> + _InputIterator skip(_InputIterator __first, _InputIterator __last); + + template <typename _InputIterator> + _InputIterator eval_primary(_InputIterator __first, _InputIterator __last, Value *result); + + template <typename _InputIterator> + _InputIterator eval_multiplicative(_InputIterator __first, _InputIterator __last, Value *result); + + template <typename _InputIterator> + _InputIterator eval_additive(_InputIterator __first, _InputIterator __last, Value *result); + + template <typename _InputIterator> + _InputIterator eval_shift(_InputIterator __first, _InputIterator __last, Value *result); + + template <typename _InputIterator> + _InputIterator eval_relational(_InputIterator __first, _InputIterator __last, Value *result); + + template <typename _InputIterator> + _InputIterator eval_equality(_InputIterator __first, _InputIterator __last, Value *result); + + template <typename _InputIterator> + _InputIterator eval_and(_InputIterator __first, _InputIterator __last, Value *result); + + template <typename _InputIterator> + _InputIterator eval_xor(_InputIterator __first, _InputIterator __last, Value *result); + + template <typename _InputIterator> + _InputIterator eval_or(_InputIterator __first, _InputIterator __last, Value *result); + + template <typename _InputIterator> + _InputIterator eval_logical_and(_InputIterator __first, _InputIterator __last, Value *result); + + template <typename _InputIterator> + _InputIterator eval_logical_or(_InputIterator __first, _InputIterator __last, Value *result); + + template <typename _InputIterator> + _InputIterator eval_constant_expression(_InputIterator __first, _InputIterator __last, Value *result); + + template <typename _InputIterator, typename _OutputIterator> + _InputIterator handle_directive(char const *__directive, std::size_t __size, + _InputIterator __first, _InputIterator __last, _OutputIterator __result); + + template <typename _InputIterator, typename _OutputIterator> + _InputIterator handle_include(bool skip_current_path, _InputIterator __first, _InputIterator __last, + _OutputIterator __result); + + template <typename _InputIterator> + _InputIterator handle_define(_InputIterator __first, _InputIterator __last); + + template <typename _InputIterator> + _InputIterator handle_if(_InputIterator __first, _InputIterator __last); + + template <typename _InputIterator> + _InputIterator handle_else(_InputIterator __first, _InputIterator __last); + + template <typename _InputIterator> + _InputIterator handle_elif(_InputIterator __first, _InputIterator __last); + + template <typename _InputIterator> + _InputIterator handle_endif(_InputIterator __first, _InputIterator __last); + + template <typename _InputIterator> + _InputIterator handle_ifdef(bool check_undefined, _InputIterator __first, _InputIterator __last); + + template <typename _InputIterator> + _InputIterator handle_undef(_InputIterator __first, _InputIterator __last); + + template <typename _InputIterator> + inline char peek_char(_InputIterator __first, _InputIterator __last); + + template <typename _InputIterator> + _InputIterator next_token(_InputIterator __first, _InputIterator __last, int *kind); +}; + +} // namespace rpp + +#endif // PP_ENGINE_H + +// kate: space-indent on; indent-width 2; replace-tabs on; |