| /*============================================================================= |
| Boost.Wave: A Standard compliant C++ preprocessor library |
| |
| http://www.boost.org/ |
| |
| Copyright (c) 2001-2010 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) |