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Eclipse JDT Release 3.1 |
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java.lang.Objectorg.eclipse.jdt.core.dom.ASTRequestor
An AST requestor handles ASTs for compilation units passed to
ASTParser.createASTs
.
ASTRequestor.acceptAST
is called for each of the
compilation units passed to ASTParser.createASTs
.
After all the compilation units have been processed,
ASTRequestor.acceptBindings
is called for each
of the binding keys passed to ASTParser.createASTs
.
This class is intended to be subclassed by clients. AST requestors are serially reusable, but neither reentrant nor thread-safe.
ASTParser.createASTs(ICompilationUnit[], String[], ASTRequestor, org.eclipse.core.runtime.IProgressMonitor)
Constructor Summary | |
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protected |
ASTRequestor()
Creates a new instance. |
Method Summary | |
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void |
acceptAST(ICompilationUnit source,
CompilationUnit ast)
Accepts an AST corresponding to the compilation unit. |
void |
acceptBinding(String bindingKey,
IBinding binding)
Accepts a binding corresponding to the binding key. |
IBinding[] |
createBindings(String[] bindingKeys)
Resolves bindings for the given binding keys. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
protected ASTRequestor()
Method Detail |
public void acceptAST(ICompilationUnit source, CompilationUnit ast)
ast
is an AST for source
.
The default implementation of this method does nothing. Clients should override to process the resulting AST.
source
- the compilation unit the ast is coming fromast
- the requested abtract syntax treepublic void acceptBinding(String bindingKey, IBinding binding)
binding
is the binding for
bindingKey
; binding
is null
if the key cannot be resolved.
The default implementation of this method does nothing. Clients should override to process the resulting binding.
bindingKey
- the key of the requested bindingbinding
- the requested binding, or null
if nonepublic final IBinding[] createBindings(String[] bindingKeys)
IBinding.getKey()
.
If a binding key cannot be resolved, null
is put in the resulting array.
Bindings can only be resolved in the dynamic scope of a ASTParser.createASTs
,
and only if ASTParser.resolveBindings(true)
was specified.
Caveat: During an acceptAST
callback, there are implementation
limitations concerning the look up of binding keys representing local elements.
In some cases, the binding is unavailable, and null
will be returned.
This is only an issue during an acceptAST
callback, and only
when the binding key represents a local element (e.g., local variable,
local class, method declared in anonymous class). There is no such limitation
outside of acceptAST
callbacks, or for top-level types and their
members even within acceptAST
callbacks.
bindingKeys
- the binding keys to look up
bindingKeys
parameter,
with null
entries for keys that could not be resolved
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