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authorJohn Wiegley <johnw@newartisans.com>2008-08-05 13:17:04 -0400
committerJohn Wiegley <johnw@newartisans.com>2008-08-05 18:05:49 -0400
commitf6f4a46cf5b14f9a2170cd6475958efbf320caec (patch)
tree05bc1defcdebc201de3dd10477483d906a842821 /src/error.h
parentb7970b29855563e4c67f85af8b31233eda80c22a (diff)
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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.h85
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