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author | John Wiegley <johnw@newartisans.com> | 2008-08-05 13:17:04 -0400 |
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committer | John Wiegley <johnw@newartisans.com> | 2008-08-05 18:05:49 -0400 |
commit | f6f4a46cf5b14f9a2170cd6475958efbf320caec (patch) | |
tree | 05bc1defcdebc201de3dd10477483d906a842821 /src/error.h | |
parent | b7970b29855563e4c67f85af8b31233eda80c22a (diff) | |
download | fork-ledger-f6f4a46cf5b14f9a2170cd6475958efbf320caec.tar.gz fork-ledger-f6f4a46cf5b14f9a2170cd6475958efbf320caec.tar.bz2 fork-ledger-f6f4a46cf5b14f9a2170cd6475958efbf320caec.zip |
Moved around most of the files so that source code is in src/, documentation
is in doc/, etc.
Diffstat (limited to 'src/error.h')
-rw-r--r-- | src/error.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/src/error.h b/src/error.h new file mode 100644 index 00000000..fafef08e --- /dev/null +++ b/src/error.h @@ -0,0 +1,85 @@ +/* + * Copyright (c) 2003-2008, John Wiegley. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * - Neither the name of New Artisans LLC nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _ERROR_H +#define _ERROR_H + +namespace ledger { + +extern std::ostringstream _desc_buffer; + +template <typename T> +inline void throw_func(const string& message) { + _desc_buffer.str(""); + throw T(message); +} + +#define throw_(cls, msg) \ + ((_desc_buffer << msg), throw_func<cls>(_desc_buffer.str())) + +extern std::ostringstream _ctxt_buffer; + +#define add_error_context(msg) \ + ((static_cast<unsigned long>(_ctxt_buffer.tellp()) == 0) ? \ + (_ctxt_buffer << msg) : (_ctxt_buffer << std::endl << msg)) + +inline string error_context() { + string context = _ctxt_buffer.str(); + _ctxt_buffer.str(""); + return context; +} + +inline string file_context(const path& file, std::size_t line) { + std::ostringstream buf; + buf << "\"" << file << "\", line " << line << ": "; + return buf.str(); +} + +inline string line_context(const string& line, long pos) { + std::ostringstream buf; + buf << " " << line << std::endl << " "; + long idx = pos < 0 ? line.length() - 1 : pos; + for (int i = 0; i < idx; i++) + buf << " "; + buf << "^" << std::endl; + return buf.str(); +} + +#define DECLARE_EXCEPTION(name, kind) \ + class name : public kind { \ + public: \ + explicit name(const string& why) throw() : kind(why) {} \ + virtual ~name() throw() {} \ + } + +} // namespace ledger + +#endif // _ERROR_H |