Package com.google.auto.common

Class Overrides.ExplicitOverrides.TypeSubstVisitor

java.lang.Object

javax.lang.model.util.AbstractTypeVisitor6<TypeMirror,Void>

javax.lang.model.util.SimpleTypeVisitor6<TypeMirror,Void>

javax.lang.model.util.SimpleTypeVisitor7<TypeMirror,Void>

javax.lang.model.util.SimpleTypeVisitor8<TypeMirror,Void>

com.google.auto.common.Overrides.ExplicitOverrides.TypeSubstVisitor

All Implemented Interfaces:

TypeVisitor<TypeMirror,Void>

Enclosing class:

Overrides.ExplicitOverrides

private class Overrides.ExplicitOverrides.TypeSubstVisitor
extends SimpleTypeVisitor8<TypeMirror,Void>

Visitor that replaces type variables with their values in the types it sees. If we know that E is String, then we can return String for E, List<String> for List<E>, String[] for E[], etc. We don't have to cover all types here because (1) the type is going to end up being erased, and (2) wildcards can't appear in direct supertypes. So for example it is illegal to write class MyList implements List<? extends Number>. It's legal to write class MyList implements List<Set<? extends Number>> but that doesn't matter because the E of the List is going to be erased to raw Set.

Field Summary

Fields

Modifier and Type	Field	Description
private final Map<TypeParameterElement,TypeMirror>	typeBindings	The bindings of type variables.

Fields inherited from class javax.lang.model.util.SimpleTypeVisitor6

DEFAULT_VALUE

Constructor Summary

Constructors

Modifier	Constructor	Description
private	TypeSubstVisitor()

Method Summary

Modifier and Type	Method	Description
protected TypeMirror	defaultAction(TypeMirror e, Void p)
(package private) com.google.common.collect.ImmutableList<TypeMirror>	erasedParameterTypes(ExecutableElement method, TypeElement in)
TypeMirror	visitArray(ArrayType t, Void p)
TypeMirror	visitDeclared(DeclaredType t, Void p)
TypeMirror	visitTypeVariable(TypeVariable t, Void p)

Methods inherited from class javax.lang.model.util.SimpleTypeVisitor8

visitIntersection

Methods inherited from class javax.lang.model.util.SimpleTypeVisitor7

visitUnion

Methods inherited from class javax.lang.model.util.SimpleTypeVisitor6

visitError, visitExecutable, visitNoType, visitNull, visitPrimitive, visitWildcard

Methods inherited from class javax.lang.model.util.AbstractTypeVisitor6

visit, visit, visitUnknown

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

typeBindings

private final Map<TypeParameterElement,TypeMirror> typeBindings

The bindings of type variables. We can put them all in one map because E in List<E> is not the same as E in Collection<E>. As we ascend the type hierarchy we'll add mappings for all the variables we see. We could equivalently create a new map for each type we visit, but this is slightly simpler and probably about as performant.

Constructor Details

TypeSubstVisitor

private TypeSubstVisitor()

Method Details

erasedParameterTypes

com.google.common.collect.ImmutableList<TypeMirror> erasedParameterTypes(ExecutableElement method,
 TypeElement in)

defaultAction

protected TypeMirror defaultAction(TypeMirror e,
 Void p)

Overrides:

defaultAction in class SimpleTypeVisitor6<TypeMirror,Void>

visitTypeVariable

public TypeMirror visitTypeVariable(TypeVariable t,
 Void p)

Specified by:

visitTypeVariable in interface TypeVisitor<TypeMirror,Void>

Overrides:

visitTypeVariable in class SimpleTypeVisitor6<TypeMirror,Void>

visitDeclared

public TypeMirror visitDeclared(DeclaredType t,
 Void p)

Specified by:

visitDeclared in interface TypeVisitor<TypeMirror,Void>

Overrides:

visitDeclared in class SimpleTypeVisitor6<TypeMirror,Void>

visitArray

public TypeMirror visitArray(ArrayType t,
 Void p)

Specified by:

visitArray in interface TypeVisitor<TypeMirror,Void>

Overrides:

visitArray in class SimpleTypeVisitor6<TypeMirror,Void>