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Class `dmd.attrib.ForwardingAttribDeclaration`

Collection of declarations that stores foreach index variables in a local symbol table. Other symbols declared within are forwarded to another scope, like:


						
				class ForwardingAttribDeclaration
				
  : AttribDeclaration
				;

static foreach (i; 0 .. 10) // loop variables for different indices do not conflict. { // this body is expanded into 10 ForwardingAttribDeclarations, where i has storage class STC.local mixin("enum x" ~ to!string(i) ~ " = i"); // ok, can access current loop variable }

static foreach (i; 0.. 10) { pragma(msg, mixin("x" ~ to!string(i))); // ok, all 10 symbols are visible as they were forwarded to the global scope }

static assert (!is(typeof(i))); // loop index variable is not visible outside of the static foreach loop

A StaticForeachDeclaration generates one ForwardingAttribDeclaration for each expansion of its body. The AST of the ForwardingAttribDeclaration contains both the `static foreach variables and the respective copy of the static foreach` body. The functionality is achieved by using a ForwardingScopeDsymbol as the parent symbol for the generated declarations.

Methods

Name	Description
`addMember`	Lazily initializes the scope to forward to.
`newScope`	Use the ForwardingScopeDsymbol as the parent symbol for members.
`accept`
`addComment`	Add documentation comment to Dsymbol. Ignore NULL comments.
`addLocalClass`
`apply`	Iterate this dsymbol or members of this scoped dsymbol, then call `fp` with the found symbol and `param`.
`arraySyntaxCopy`	Do syntax copy of an array of Dsymbol's.
`createNewScope`	Create a new scope if one or more given attributes are different from the sc's. If the returned scope != sc, the caller should pop the scope after it used.
`factory`	Create instance of class specified by the fully qualified name classname. The class must either have no constructors or have a default constructor.
`getAccessModule`	Determine which Module a Dsymbol is in, as far as access rights go.
`getModule`	Determine which Module a Dsymbol is in.
`hasPointers`	Is Dsymbol a variable that contains pointers?
`inNonRoot`	Returns true if this symbol is defined in a non-root module without instantiation.
`isMember`	Returns an AggregateDeclaration when toParent() is that.
`isMember2`	Returns an AggregateDeclaration when toParent2() is that.
`oneMember`	Determine if this symbol is only one.
`oneMembers`	Same as Dsymbol::oneMember(), but look at an array of Dsymbols.
`opCmp`	Compare with another Object obj.
`opEquals`	Test whether `this` is equal to `o`. The default implementation only compares by identity (using the `is` operator). Generally, overrides for `opEquals` should attempt to compare objects by their contents.
`prot`
`search`	Search for ident as member of s.
`searchX`	Search for identifier id as a member of `this`. `id` may be a template instance.
`setScope`	Set scope for future semantic analysis so we can deal better with forward references.
`size`
`syntaxCopy`	Copy the syntax. Used for template instantiations. If s is NULL, allocate the new object, otherwise fill it in.
`toAlias`	If this symbol is really an alias for another, return that other. If needed, semantic() is invoked due to resolve forward reference.
`toAlias2`	Resolve recursive tuple expansion in eponymous template.
`toHash`	Compute hash function for Object.
`toParent`	`parent` field returns a lexically enclosing scope symbol this is a member of.
`toParent2`	`parent` field returns a lexically enclosing scope symbol this is a member of.
`toString`	Convert Object to a human readable string.

Authors

Walter Bright

License

Boost License 1.0