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authorRalph Amissah <ralph.amissah@gmail.com>2021-02-19 17:10:51 -0500
committerRalph Amissah <ralph.amissah@gmail.com>2021-02-24 16:46:47 -0500
commit02ca32ae0a5bc290918d2b2a3288e385b9cc6b11 (patch)
tree06379785e8a0165a7deb981c2eba362894820634 /src/ext_depends/D-YAML/source/dyaml/exception.d
parentbuild from static source-tree pre fetch depends (diff)
external & build dependences in src tree
- external & build dependences boost licensed - ext_depends (external depends) - D-YAML - tinyendian - d2sqlite3 - imageformats - build_depends - dub2nix
Diffstat (limited to 'src/ext_depends/D-YAML/source/dyaml/exception.d')
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+
+// Copyright Ferdinand Majerech 2011.
+// 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)
+
+///Exceptions thrown by D:YAML and _exception related code.
+module dyaml.exception;
+
+
+import std.algorithm;
+import std.array;
+import std.string;
+import std.conv;
+
+
+/// Base class for all exceptions thrown by D:YAML.
+class YAMLException : Exception
+{
+ /// Construct a YAMLException with specified message and position where it was thrown.
+ public this(string msg, string file = __FILE__, size_t line = __LINE__)
+ @safe pure nothrow
+ {
+ super(msg, file, line);
+ }
+}
+
+/// Position in a YAML stream, used for error messages.
+struct Mark
+{
+ package:
+ /// File name.
+ string name_;
+ /// Line number.
+ ushort line_;
+ /// Column number.
+ ushort column_;
+
+ public:
+ /// Construct a Mark with specified line and column in the file.
+ this(string name, const uint line, const uint column) @safe pure nothrow @nogc
+ {
+ name_ = name;
+ line_ = cast(ushort)min(ushort.max, line);
+ // This *will* overflow on extremely wide files but saves CPU time
+ // (mark ctor takes ~5% of time)
+ column_ = cast(ushort)column;
+ }
+
+ /// Get a file name.
+ @property string name() @safe pure nothrow @nogc const
+ {
+ return name_;
+ }
+
+ /// Get a line number.
+ @property ushort line() @safe pure nothrow @nogc const
+ {
+ return line_;
+ }
+
+ /// Get a column number.
+ @property ushort column() @safe pure nothrow @nogc const
+ {
+ return column_;
+ }
+
+ /// Get a string representation of the mark.
+ string toString() @safe pure nothrow const
+ {
+ // Line/column numbers start at zero internally, make them start at 1.
+ static string clamped(ushort v) @safe pure nothrow
+ {
+ return text(v + 1, v == ushort.max ? " or higher" : "");
+ }
+ return "file " ~ name_ ~ ",line " ~ clamped(line_) ~ ",column " ~ clamped(column_);
+ }
+}
+
+package:
+// A struct storing parameters to the MarkedYAMLException constructor.
+struct MarkedYAMLExceptionData
+{
+ // Context of the error.
+ string context;
+ // Position of the context in a YAML buffer.
+ Mark contextMark;
+ // The error itself.
+ string problem;
+ // Position if the error.
+ Mark problemMark;
+}
+
+// Base class of YAML exceptions with marked positions of the problem.
+abstract class MarkedYAMLException : YAMLException
+{
+ // Construct a MarkedYAMLException with specified context and problem.
+ this(string context, const Mark contextMark, string problem, const Mark problemMark,
+ string file = __FILE__, size_t line = __LINE__) @safe pure nothrow
+ {
+ const msg = context ~ '\n' ~
+ (contextMark != problemMark ? contextMark.toString() ~ '\n' : "") ~
+ problem ~ '\n' ~ problemMark.toString() ~ '\n';
+ super(msg, file, line);
+ }
+
+ // Construct a MarkedYAMLException with specified problem.
+ this(string problem, const Mark problemMark,
+ string file = __FILE__, size_t line = __LINE__)
+ @safe pure nothrow
+ {
+ super(problem ~ '\n' ~ problemMark.toString(), file, line);
+ }
+
+ /// Construct a MarkedYAMLException from a struct storing constructor parameters.
+ this(ref const(MarkedYAMLExceptionData) data) @safe pure nothrow
+ {
+ with(data) this(context, contextMark, problem, problemMark);
+ }
+}
+
+// Constructors of YAML exceptions are mostly the same, so we use a mixin.
+//
+// See_Also: YAMLException
+template ExceptionCtors()
+{
+ public this(string msg, string file = __FILE__, size_t line = __LINE__)
+ @safe pure nothrow
+ {
+ super(msg, file, line);
+ }
+}
+
+// Constructors of marked YAML exceptions are mostly the same, so we use a mixin.
+//
+// See_Also: MarkedYAMLException
+template MarkedExceptionCtors()
+{
+ public:
+ this(string context, const Mark contextMark, string problem,
+ const Mark problemMark, string file = __FILE__, size_t line = __LINE__)
+ @safe pure nothrow
+ {
+ super(context, contextMark, problem, problemMark,
+ file, line);
+ }
+
+ this(string problem, const Mark problemMark,
+ string file = __FILE__, size_t line = __LINE__)
+ @safe pure nothrow
+ {
+ super(problem, problemMark, file, line);
+ }
+
+ this(ref const(MarkedYAMLExceptionData) data) @safe pure nothrow
+ {
+ super(data);
+ }
+}