public class PickAnyArgumentHint extends SingleSignatureClosureHint
Base class for hints which use the type of a parameter of the annotated method as the signature. This can optionally use a generic type of the selected parameter as the hint. For example, imagine the following method:
void foo(A firstArg, B secondArg, Closure c) {...}
If the c closure should be { B it -> ...}, then we can see that the parameter type
should be picked from the second parameter of the foo method, which is what PickAnyArgumentHint
lets you do.
Alternatively, the method may look like this:
void <T> foo(A<T> firstArg, B secondArg, Closure c) {...}
in which case if you want to express the fact that c should accept a <T> then you can use the
genericTypeIndex value.
This class is extended by several hint providers that make it easier to use as annotation values.
| Constructor and Description |
|---|
PickAnyArgumentHint()
Creates the an argument picker which extracts the type of the first parameter.
|
PickAnyArgumentHint(int parameterIndex,
int genericTypeIndex)
Creates a picker which will extract the parameterIndex-th parameter type, or its
genericTypeIndex-th generic type genericTypeIndex is >=0.
|
| Modifier and Type | Method and Description |
|---|---|
ClassNode[] |
getParameterTypes(MethodNode node,
java.lang.String[] options,
SourceUnit sourceUnit,
CompilationUnit unit,
ASTNode usage) |
getClosureSignaturesfindClassNode, pickGenericType, pickGenericTypepublic PickAnyArgumentHint()
public PickAnyArgumentHint(int parameterIndex,
int genericTypeIndex)
parameterIndex - the index of the parameter from which to extract the typegenericTypeIndex - if >=0, then returns the corresponding generic type instead of the parameter type.public ClassNode[] getParameterTypes(MethodNode node, java.lang.String[] options, SourceUnit sourceUnit, CompilationUnit unit, ASTNode usage)
getParameterTypes in class SingleSignatureClosureHint