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