com.android.tools.lint.detector.api

Class TypeEvaluator

java.lang.Object

com.android.tools.lint.detector.api.TypeEvaluator

public class TypeEvaluator
extends java.lang.Object

Evaluates the types of nodes. This goes deeper than JavaContext.getType(Node) in that it analyzes the flow and for example figures out that if you ask for the type of var in this code snippet:

     Object o = new StringBuilder();
     Object var = o;
 

it will return "java.lang.StringBuilder".

NOTE: This type evaluator does not (yet) compute the correct types when involving implicit type conversions, so be careful if using this for primitives; e.g. for "int * long" it might return the type "int".

Constructor Summary

Constructors

Constructor and Description
TypeEvaluator(JavaContext context) Creates a new constant evaluator

Method Summary

Modifier and Type	Method and Description
static JavaParser.TypeDescriptor	evaluate(JavaContext context, lombok.ast.Node node) Deprecated. Use evaluate(JavaContext, PsiElement) instead
static com.intellij.psi.PsiType	evaluate(JavaContext context, com.intellij.psi.PsiElement node) Evaluates the given node and returns the likely type of the instance.
JavaParser.TypeDescriptor	evaluate(lombok.ast.Node node) Deprecated. Use evaluate(PsiElement) instead
com.intellij.psi.PsiType	evaluate(com.intellij.psi.PsiElement node) Returns the inferred type of the given node
static com.intellij.psi.PsiType	evaluate(org.jetbrains.uast.UElement node)

Methods inherited from class java.lang.Object

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

Constructor Detail

TypeEvaluator

public TypeEvaluator(@Nullable
                     JavaContext context)

Creates a new constant evaluator

Parameters:

context - the context to use to resolve field references, if any

Method Detail

evaluate

@Deprecated
 @Nullable
public JavaParser.TypeDescriptor evaluate(@NonNull
                                                                 lombok.ast.Node node)

Deprecated. Use evaluate(PsiElement) instead

Returns the inferred type of the given node

evaluate

@Nullable
public com.intellij.psi.PsiType evaluate(@Nullable
                                                   com.intellij.psi.PsiElement node)

Returns the inferred type of the given node

evaluate

@Nullable
public static com.intellij.psi.PsiType evaluate(@Nullable
                                                          org.jetbrains.uast.UElement node)

evaluate

@Deprecated
 @Nullable
public static JavaParser.TypeDescriptor evaluate(@NonNull
                                                                        JavaContext context,
                                                                        @NonNull
                                                                        lombok.ast.Node node)

Deprecated. Use evaluate(JavaContext, PsiElement) instead

Evaluates the given node and returns the likely type of the instance. Convenience wrapper which creates a new TypeEvaluator, evaluates the node and returns the result.

Parameters:

context - the context to use to resolve field references, if any

node - the node to compute the type for

Returns:

the corresponding type descriptor, if found

evaluate

@Nullable
public static com.intellij.psi.PsiType evaluate(@NonNull
                                                          JavaContext context,
                                                          @NonNull
                                                          com.intellij.psi.PsiElement node)

Evaluates the given node and returns the likely type of the instance. Convenience wrapper which creates a new TypeEvaluator, evaluates the node and returns the result.

Parameters:

context - the context to use to resolve field references, if any

node - the node to compute the type for

Returns:

the corresponding type descriptor, if found