140 lines
5.3 KiB
HTML
140 lines
5.3 KiB
HTML
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<h1>dyaml.resolver</h1>
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<!-- Generated by Ddoc from dyaml/resolver.d -->
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<p>Implements a class that resolves YAML tags. This can be used to implicitly
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resolve tags for custom data types, removing the need to explicitly
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specify tags in YAML. A tutorial can be found
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<a href="../tutorials/custom_types.html">here</a>.
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</p>
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<p>Code based on <a href="http://www.pyyaml.org">PyYAML</a>.</p>
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<dl><dt class="d_decl">class <a name="Resolver"></a><span class="ddoc_psymbol">Resolver</span>;
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</dt>
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<dd><p>Resolves YAML tags (data types).
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</p>
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<p>Can be used to implicitly resolve custom data types of scalar values.</p>
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<dl><dt class="d_decl">this(in bool <b>defaultImplicitResolvers</b> = true);
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</dt>
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<dd><p>Construct a Resolver.
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</p>
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<p>If you don't want to implicitly resolve default YAML tags/data types,
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you can use <b>defaultImplicitResolvers</b> to disable default resolvers.
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</p>
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<b>Parameters:</b><div class="pbr"><table class=parms><tr><td valign=top>bool <b>defaultImplicitResolvers</b></td>
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<td valign=top>Use default YAML implicit resolvers?</td></tr>
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</table></div>
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</dd>
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<dt class="d_decl">void <a name="addImplicitResolver"></a><span class="ddoc_psymbol">addImplicitResolver</span>(string <b>tag</b>, Regex!(char) <b>regexp</b>, in string <b>first</b>);
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</dt>
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<dd><p>Add an implicit scalar resolver.
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</p>
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<p>If a scalar matches <b>regexp</b> and starts with any character in <b>first</b>,
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its tag is set to <b>tag</b>. If it matches more than one resolver regexp
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resolvers added first override ones added later. Default resolvers
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override any user specified resolvers, but they can be disabled in
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Resolver constructor.
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<br>
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If a scalar is not resolved to anything, it is assigned the default
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YAML tag for strings.
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</p>
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<b>Parameters:</b><div class="pbr"><table class=parms><tr><td valign=top>string <b>tag</b></td>
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<td valign=top>Tag to resolve to.</td></tr>
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<tr><td valign=top>Regex!(char) <b>regexp</b></td>
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<td valign=top>Regular expression the scalar must match to have this tag.</td></tr>
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<tr><td valign=top>string <b>first</b></td>
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<td valign=top>String of possible starting characters of the scalar.</td></tr>
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</table></div>
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<b>Examples:</b><div class="pbr">Resolve scalars starting with 'A' to !tag :
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<pre class="d_code"> <span class="d_keyword">import</span> std.regex;
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<span class="d_keyword">import</span> yaml;
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<span class="d_keyword">void</span> main()
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{
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<span class="d_keyword">auto</span> loader = Loader(<span class="d_string">"file.txt"</span>);
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<span class="d_keyword">auto</span> resolver = <span class="d_keyword">new</span> Resolver();
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resolver.<span class="d_psymbol">addImplicitResolver</span>(<span class="d_string">"!tag"</span>, std.regex.regex(<span class="d_string">"A*"</span>), <span class="d_string">"A"</span>);
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loader.resolver = resolver;
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<span class="d_comment">//Note that we have no constructor from tag "!tag", so we can't
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</span> <span class="d_comment">//actually load anything that resolves to this tag.
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</span> <span class="d_comment">//See Constructor API documentation and tutorial for more information.
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</span>
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<span class="d_keyword">auto</span> node = loader.load();
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}
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</pre>
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</div>
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</dd>
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<dt class="d_decl">package const @property Tag <a name="defaultScalarTag"></a><span class="ddoc_psymbol">defaultScalarTag</span>();
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</dt>
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<dd><p>Return default scalar tag.</p>
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</dd>
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<dt class="d_decl">package const @property Tag <a name="defaultSequenceTag"></a><span class="ddoc_psymbol">defaultSequenceTag</span>();
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</dt>
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<dd><p>Return default sequence tag.</p>
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</dd>
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<dt class="d_decl">package const @property Tag <a name="defaultMappingTag"></a><span class="ddoc_psymbol">defaultMappingTag</span>();
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</dt>
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<dd><p>Return default mapping tag.</p>
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</dd>
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</dl>
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</dd>
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</dl>
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</div>
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<div id="copyright">
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Copyright © Ferdinand Majerech 2011. Based on <a href="http://www.pyyaml.org">PyYAML</a> by Kirill Simonov. |
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Page generated by Autodoc and <a href="http://www.digitalmars.com/d/2.0/ddoc.html">Ddoc</a>.
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