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diff --git a/src/ext_depends/D-YAML/source/dyaml/exception.d b/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);
+        }
+}