| /*============================================================================= | |
| Boost.Wave: A Standard compliant C++ preprocessor library | |
| http://www.boost.org/ | |
| Copyright (c) 2001-2011 Hartmut Kaiser. Distributed under the Boost | |
| Software License, Version 1.0. (See accompanying file | |
| LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
| =============================================================================*/ | |
| #if !defined(CPP_EXCEPTIONS_HPP_5190E447_A781_4521_A275_5134FF9917D7_INCLUDED) | |
| #define CPP_EXCEPTIONS_HPP_5190E447_A781_4521_A275_5134FF9917D7_INCLUDED | |
| #include <exception> | |
| #include <string> | |
| #include <limits> | |
| #include <boost/assert.hpp> | |
| #include <boost/config.hpp> | |
| #include <boost/throw_exception.hpp> | |
| #include <boost/wave/wave_config.hpp> | |
| #include <boost/wave/cpp_throw.hpp> | |
| // this must occur after all of the includes and before any code appears | |
| #ifdef BOOST_HAS_ABI_HEADERS | |
| #include BOOST_ABI_PREFIX | |
| #endif | |
| /////////////////////////////////////////////////////////////////////////////// | |
| namespace boost { | |
| namespace wave { | |
| /////////////////////////////////////////////////////////////////////////////// | |
| // exception severity | |
| namespace util { | |
| enum severity { | |
| severity_remark = 0, | |
| severity_warning, | |
| severity_error, | |
| severity_fatal, | |
| severity_commandline_error, | |
| last_severity_code = severity_commandline_error | |
| }; | |
| inline char const * | |
| get_severity(int level) | |
| { | |
| static char const *severity_text[] = | |
| { | |
| "remark", // severity_remark | |
| "warning", // severity_warning | |
| "error", // severity_error | |
| "fatal error", // severity_fatal | |
| "command line error" // severity_commandline_error | |
| }; | |
| BOOST_ASSERT(severity_remark <= level && | |
| level <= last_severity_code); | |
| return severity_text[level]; | |
| } | |
| } | |
| /////////////////////////////////////////////////////////////////////////////// | |
| // cpp_exception, the base class for all specific C preprocessor exceptions | |
| class BOOST_SYMBOL_VISIBLE cpp_exception | |
| : public std::exception | |
| { | |
| public: | |
| cpp_exception(int line_, int column_, char const *filename_) throw() | |
| : line(line_), column(column_) | |
| { | |
| unsigned int off = 0; | |
| while (off < sizeof(filename)-1 && *filename_) | |
| filename[off++] = *filename_++; | |
| filename[off] = 0; | |
| } | |
| ~cpp_exception() throw() {} | |
| virtual char const *what() const throw() = 0; // to be overloaded | |
| virtual char const *description() const throw() = 0; | |
| virtual int get_errorcode() const throw() = 0; | |
| virtual int get_severity() const throw() = 0; | |
| virtual char const* get_related_name() const throw() = 0; | |
| virtual bool is_recoverable() const throw() = 0; | |
| int line_no() const throw() { return line; } | |
| int column_no() const throw() { return column; } | |
| char const *file_name() const throw() { return filename; } | |
| protected: | |
| char filename[512]; | |
| int line; | |
| int column; | |
| }; | |
| /////////////////////////////////////////////////////////////////////////////// | |
| // preprocessor error | |
| class BOOST_SYMBOL_VISIBLE preprocess_exception : | |
| public cpp_exception | |
| { | |
| public: | |
| enum error_code { | |
| no_error = 0, | |
| unexpected_error, | |
| macro_redefinition, | |
| macro_insertion_error, | |
| bad_include_file, | |
| bad_include_statement, | |
| ill_formed_directive, | |
| error_directive, | |
| warning_directive, | |
| ill_formed_expression, | |
| missing_matching_if, | |
| missing_matching_endif, | |
| ill_formed_operator, | |
| bad_define_statement, | |
| bad_define_statement_va_args, | |
| too_few_macroarguments, | |
| too_many_macroarguments, | |
| empty_macroarguments, | |
| improperly_terminated_macro, | |
| bad_line_statement, | |
| bad_line_number, | |
| bad_line_filename, | |
| bad_undefine_statement, | |
| bad_macro_definition, | |
| illegal_redefinition, | |
| duplicate_parameter_name, | |
| invalid_concat, | |
| last_line_not_terminated, | |
| ill_formed_pragma_option, | |
| include_nesting_too_deep, | |
| misplaced_operator, | |
| alreadydefined_name, | |
| undefined_macroname, | |
| invalid_macroname, | |
| unexpected_qualified_name, | |
| division_by_zero, | |
| integer_overflow, | |
| illegal_operator_redefinition, | |
| ill_formed_integer_literal, | |
| ill_formed_character_literal, | |
| unbalanced_if_endif, | |
| character_literal_out_of_range, | |
| could_not_open_output_file, | |
| incompatible_config, | |
| ill_formed_pragma_message, | |
| pragma_message_directive, | |
| last_error_number = pragma_message_directive | |
| }; | |
| preprocess_exception(char const *what_, error_code code, int line_, | |
| int column_, char const *filename_) throw() | |
| : cpp_exception(line_, column_, filename_), | |
| code(code) | |
| { | |
| unsigned int off = 0; | |
| while (off < sizeof(buffer) && *what_) | |
| buffer[off++] = *what_++; | |
| buffer[off] = 0; | |
| } | |
| ~preprocess_exception() throw() {} | |
| virtual char const *what() const throw() | |
| { | |
| return "boost::wave::preprocess_exception"; | |
| } | |
| virtual char const *description() const throw() | |
| { | |
| return buffer; | |
| } | |
| virtual int get_severity() const throw() | |
| { | |
| return severity_level(code); | |
| } | |
| virtual int get_errorcode() const throw() | |
| { | |
| return code; | |
| } | |
| virtual char const* get_related_name() const throw() | |
| { | |
| return "<unknown>"; | |
| } | |
| virtual bool is_recoverable() const throw() | |
| { | |
| switch (get_errorcode()) { | |
| // these are the exceptions thrown during processing not supposed to | |
| // produce any tokens on the context::iterator level | |
| case preprocess_exception::no_error: // just a placeholder | |
| case preprocess_exception::macro_redefinition: | |
| case preprocess_exception::macro_insertion_error: | |
| case preprocess_exception::bad_macro_definition: | |
| case preprocess_exception::illegal_redefinition: | |
| case preprocess_exception::duplicate_parameter_name: | |
| case preprocess_exception::invalid_macroname: | |
| case preprocess_exception::bad_include_file: | |
| case preprocess_exception::bad_include_statement: | |
| case preprocess_exception::ill_formed_directive: | |
| case preprocess_exception::error_directive: | |
| case preprocess_exception::warning_directive: | |
| case preprocess_exception::ill_formed_expression: | |
| case preprocess_exception::missing_matching_if: | |
| case preprocess_exception::missing_matching_endif: | |
| case preprocess_exception::unbalanced_if_endif: | |
| case preprocess_exception::bad_define_statement: | |
| case preprocess_exception::bad_define_statement_va_args: | |
| case preprocess_exception::bad_line_statement: | |
| case preprocess_exception::bad_line_number: | |
| case preprocess_exception::bad_line_filename: | |
| case preprocess_exception::bad_undefine_statement: | |
| case preprocess_exception::division_by_zero: | |
| case preprocess_exception::integer_overflow: | |
| case preprocess_exception::ill_formed_integer_literal: | |
| case preprocess_exception::ill_formed_character_literal: | |
| case preprocess_exception::character_literal_out_of_range: | |
| case preprocess_exception::last_line_not_terminated: | |
| case preprocess_exception::include_nesting_too_deep: | |
| case preprocess_exception::illegal_operator_redefinition: | |
| case preprocess_exception::incompatible_config: | |
| case preprocess_exception::ill_formed_pragma_option: | |
| case preprocess_exception::ill_formed_pragma_message: | |
| case preprocess_exception::pragma_message_directive: | |
| return true; | |
| case preprocess_exception::unexpected_error: | |
| case preprocess_exception::ill_formed_operator: | |
| case preprocess_exception::too_few_macroarguments: | |
| case preprocess_exception::too_many_macroarguments: | |
| case preprocess_exception::empty_macroarguments: | |
| case preprocess_exception::improperly_terminated_macro: | |
| case preprocess_exception::invalid_concat: | |
| case preprocess_exception::could_not_open_output_file: | |
| break; | |
| } | |
| return false; | |
| } | |
| static char const *error_text(int code) | |
| { | |
| // error texts in this array must appear in the same order as the items in | |
| // the error enum above | |
| static char const *preprocess_exception_errors[] = { | |
| "no error", // no_error | |
| "unexpected error (should not happen)", // unexpected_error | |
| "illegal macro redefinition", // macro_redefinition | |
| "macro definition failed (out of memory?)", // macro_insertion_error | |
| "could not find include file", // bad_include_file | |
| "ill formed #include directive", // bad_include_statement | |
| "ill formed preprocessor directive", // ill_formed_directive | |
| "encountered #error directive or #pragma wave stop()", // error_directive | |
| "encountered #warning directive", // warning_directive | |
| "ill formed preprocessor expression", // ill_formed_expression | |
| "the #if for this directive is missing", // missing_matching_if | |
| "detected at least one missing #endif directive", // missing_matching_endif | |
| "ill formed preprocessing operator", // ill_formed_operator | |
| "ill formed #define directive", // bad_define_statement | |
| "__VA_ARGS__ can only appear in the " | |
| "expansion of a C99 variadic macro", // bad_define_statement_va_args | |
| "too few macro arguments", // too_few_macroarguments | |
| "too many macro arguments", // too_many_macroarguments | |
| "empty macro arguments are not supported in pure C++ mode, " | |
| "use variadics mode to allow these", // empty_macroarguments | |
| "improperly terminated macro invocation " | |
| "or replacement-list terminates in partial " | |
| "macro expansion (not supported yet)", // improperly_terminated_macro | |
| "ill formed #line directive", // bad_line_statement | |
| "line number argument of #line directive " | |
| "should consist out of decimal digits " | |
| "only and must be in range of [1..INT_MAX]", // bad_line_number | |
| "filename argument of #line directive should " | |
| "be a narrow string literal", // bad_line_filename | |
| "#undef may not be used on this predefined name", // bad_undefine_statement | |
| "invalid macro definition", // bad_macro_definition | |
| "this predefined name may not be redefined", // illegal_redefinition | |
| "duplicate macro parameter name", // duplicate_parameter_name | |
| "pasting the following two tokens does not " | |
| "give a valid preprocessing token", // invalid_concat | |
| "last line of file ends without a newline", // last_line_not_terminated | |
| "unknown or illformed pragma option", // ill_formed_pragma_option | |
| "include files nested too deep", // include_nesting_too_deep | |
| "misplaced operator defined()", // misplaced_operator | |
| "the name is already used in this scope as " | |
| "a macro or scope name", // alreadydefined_name | |
| "undefined macro or scope name may not be imported", // undefined_macroname | |
| "ill formed macro name", // invalid_macroname | |
| "qualified names are supported in C++0x mode only", // unexpected_qualified_name | |
| "division by zero in preprocessor expression", // division_by_zero | |
| "integer overflow in preprocessor expression", // integer_overflow | |
| "this cannot be used as a macro name as it is " | |
| "an operator in C++", // illegal_operator_redefinition | |
| "ill formed integer literal or integer constant too large", // ill_formed_integer_literal | |
| "ill formed character literal", // ill_formed_character_literal | |
| "unbalanced #if/#endif in include file", // unbalanced_if_endif | |
| "expression contains out of range character literal", // character_literal_out_of_range | |
| "could not open output file", // could_not_open_output_file | |
| "incompatible state information", // incompatible_config | |
| "illformed pragma message", // ill_formed_pragma_message | |
| "encountered #pragma message directive" // pragma_message_directive | |
| }; | |
| BOOST_ASSERT(no_error <= code && code <= last_error_number); | |
| return preprocess_exception_errors[code]; | |
| } | |
| static util::severity severity_level(int code) | |
| { | |
| static util::severity preprocess_exception_severity[] = { | |
| util::severity_remark, // no_error | |
| util::severity_fatal, // unexpected_error | |
| util::severity_warning, // macro_redefinition | |
| util::severity_fatal, // macro_insertion_error | |
| util::severity_error, // bad_include_file | |
| util::severity_error, // bad_include_statement | |
| util::severity_error, // ill_formed_directive | |
| util::severity_fatal, // error_directive | |
| util::severity_warning, // warning_directive | |
| util::severity_error, // ill_formed_expression | |
| util::severity_error, // missing_matching_if | |
| util::severity_error, // missing_matching_endif | |
| util::severity_error, // ill_formed_operator | |
| util::severity_error, // bad_define_statement | |
| util::severity_error, // bad_define_statement_va_args | |
| util::severity_warning, // too_few_macroarguments | |
| util::severity_warning, // too_many_macroarguments | |
| util::severity_warning, // empty_macroarguments | |
| util::severity_error, // improperly_terminated_macro | |
| util::severity_warning, // bad_line_statement | |
| util::severity_warning, // bad_line_number | |
| util::severity_warning, // bad_line_filename | |
| util::severity_warning, // bad_undefine_statement | |
| util::severity_commandline_error, // bad_macro_definition | |
| util::severity_warning, // illegal_redefinition | |
| util::severity_error, // duplicate_parameter_name | |
| util::severity_error, // invalid_concat | |
| util::severity_warning, // last_line_not_terminated | |
| util::severity_warning, // ill_formed_pragma_option | |
| util::severity_fatal, // include_nesting_too_deep | |
| util::severity_error, // misplaced_operator | |
| util::severity_error, // alreadydefined_name | |
| util::severity_error, // undefined_macroname | |
| util::severity_error, // invalid_macroname | |
| util::severity_error, // unexpected_qualified_name | |
| util::severity_fatal, // division_by_zero | |
| util::severity_error, // integer_overflow | |
| util::severity_error, // illegal_operator_redefinition | |
| util::severity_error, // ill_formed_integer_literal | |
| util::severity_error, // ill_formed_character_literal | |
| util::severity_warning, // unbalanced_if_endif | |
| util::severity_warning, // character_literal_out_of_range | |
| util::severity_error, // could_not_open_output_file | |
| util::severity_remark, // incompatible_config | |
| util::severity_warning, // ill_formed_pragma_message | |
| util::severity_remark, // pragma_message_directive | |
| }; | |
| BOOST_ASSERT(no_error <= code && code <= last_error_number); | |
| return preprocess_exception_severity[code]; | |
| } | |
| static char const *severity_text(int code) | |
| { | |
| return util::get_severity(severity_level(code)); | |
| } | |
| private: | |
| char buffer[512]; | |
| error_code code; | |
| }; | |
| /////////////////////////////////////////////////////////////////////////////// | |
| // Error during macro handling, this exception contains the related macro name | |
| class BOOST_SYMBOL_VISIBLE macro_handling_exception : | |
| public preprocess_exception | |
| { | |
| public: | |
| macro_handling_exception(char const *what_, error_code code, int line_, | |
| int column_, char const *filename_, char const *macroname) throw() | |
| : preprocess_exception(what_, code, line_, column_, filename_) | |
| { | |
| unsigned int off = 0; | |
| while (off < sizeof(name) && *macroname) | |
| name[off++] = *macroname++; | |
| name[off] = 0; | |
| } | |
| ~macro_handling_exception() throw() {} | |
| virtual char const *what() const throw() | |
| { | |
| return "boost::wave::macro_handling_exception"; | |
| } | |
| char const* get_related_name() const throw() | |
| { | |
| return name; | |
| } | |
| private: | |
| char name[512]; | |
| }; | |
| /////////////////////////////////////////////////////////////////////////////// | |
| // | |
| // The is_recoverable() function allows to decide, whether it is possible | |
| // simply to continue after a given exception was thrown by Wave. | |
| // | |
| // This is kind of a hack to allow to recover from certain errors as long as | |
| // Wave doesn't provide better means of error recovery. | |
| // | |
| /////////////////////////////////////////////////////////////////////////////// | |
| inline bool | |
| is_recoverable(cpp_exception const& e) | |
| { | |
| return e.is_recoverable(); | |
| } | |
| /////////////////////////////////////////////////////////////////////////////// | |
| } // namespace wave | |
| } // namespace boost | |
| // the suffix header occurs after all of the code | |
| #ifdef BOOST_HAS_ABI_HEADERS | |
| #include BOOST_ABI_SUFFIX | |
| #endif | |
| #endif // !defined(CPP_EXCEPTIONS_HPP_5190E447_A781_4521_A275_5134FF9917D7_INCLUDED) |