The D Programming Language's Unofficial Docs
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The D Programming Language's Unofficial Docs
beta
https://dlang.org/spec/template.html#TemplateAliasParameter
Syntax: specType ident : specAlias = defaultAlias
mixin template Identifier (parameters) Constraint https://dlang.org/spec/template.html
https://dlang.org/spec/template.html#explicit_tmp_instantiation
Given: foo!(args) => name = foo tiargs = args
https://dlang.org/spec/template-mixin.html
Syntax: mixin MixinTemplateName TemplateArguments Identifier;
https://dlang.org/spec/template.html#TemplateThisParameter
Syntax: this ident : specType = defaultType
https://dlang.org/spec/template.html#TemplateSequenceParameter
Syntax: ident ...
https://dlang.org/spec/template.html#TemplateTypeParameter
Syntax: ident : specType = defaultType
https://dlang.org/spec/template.html#TemplateValueParameter
Syntax: valType ident : specValue = defaultValue
Are any of the Objects an error?
Return true if e could be valid only as a template value parameter. Return false if it might be an alias or tuple. (Note that even in this case, it could still turn out to be a value).
Given function arguments, figure out which template function to expand, and return matching result.
Try to get arg as a type.
Is this Object an error?
These functions substitute for dynamic_cast. dynamic_cast does not work on earlier versions of gcc.
Match to a particular TemplateParameter. Input: instLoc location that the template is instantiated. tiargs[] actual arguments to template instance i i'th argument parameters[] template parameters dedtypes[] deduced arguments to template instance *psparam set to symbol declared and initialized to dedtypesi
Check whether the type t representation relies on one or more the template parameters.
IsExpression can evaluate the specified type speculatively, and even if it instantiates any symbols, they are normally unnecessary for the final executable. However, if those symbols leak to the actual code, compiler should remark them as non-speculative to generate their code and link to the final executable.
This struct is needed for TemplateInstance to be the key in an associative array. Fixing https://issues.dlang.org/show_bug.cgi?id=15812 and https://issues.dlang.org/show_bug.cgi?id=15813 would make it unnecessary.
Collect and print statistics on template instantiations.
Additionally, the classes for template parameters are defined in this module. The base class, TemplateParameter, is inherited by: - TemplateTypeParameter - TemplateThisParameter - TemplateValueParameter - TemplateAliasParameter - TemplateTupleParameter
The start of the template instantiation process looks like this: - A TypeInstance or TypeIdentifier is encountered. TypeInstance have a bang (e.g. Foo!(arg)) while TypeIdentifier don't. - A TemplateInstance is instantiated - Semantic is run on the TemplateInstance (see dmd.dsymbolsem) - The TemplateInstance search for its TemplateDeclaration, runs semantic on the template arguments and deduce the best match among the possible overloads. - The TemplateInstance search for existing instances with the same arguments, and uses it if found. - Otherwise, the rest of semantic is run on the TemplateInstance.
Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
Defines TemplateDeclaration, TemplateInstance and a few utilities
This modules holds the two main template types: TemplateDeclaration, which is the user-provided declaration of a template, and TemplateInstance, which is an instance of a TemplateDeclaration with specific arguments.