Class TypeAnalysis

java.lang.Object

com.strobel.decompiler.ast.TypeAnalysis

public final class TypeAnalysis
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static final class	TypeAnalysis.AddMappingsForArgumentVisitor
(package private) static final class	TypeAnalysis.ExpressionToInfer

Field Summary

Fields

Modifier and Type	Field	Description
private final List<TypeAnalysis.ExpressionToInfer>	_allExpressions
private final Set<Variable>	_allVariables
private final Map<Variable, List<TypeAnalysis.ExpressionToInfer>>	_assignmentExpressions
private DecompilerContext	_context
private boolean	_doneInitializing
private CoreMetadataFactory	_factory
private final IdentityHashMap<Variable, TypeReference>	_inferredVariableTypes
private boolean	_preserveMetadataGenericTypes
private boolean	_preserveMetadataTypes
private final Map<Variable, Set<TypeReference>>	_previouslyInferred
private final Set<Variable>	_singleLoadVariables
private final Set<Variable>	_singleStoreVariables
private final Stack<Expression>	_stack
private static final int	FLAG_BOOLEAN_PROHIBITED

Constructor Summary

Constructors

Constructor	Description
TypeAnalysis()

Method Summary

Modifier and Type	Method	Description
private static TypeReference	adjustType(TypeReference type, int flags)
private boolean	allDone(List<TypeAnalysis.ExpressionToInfer> expressions)
private boolean	anyDone(List<TypeAnalysis.ExpressionToInfer> expressions)
private TypeReference	cleanTypeArguments(TypeReference newType, TypeReference alternateType)
private void	createDependencyGraph(Node node)
private TypeReference	doBinaryNumericPromotion(TypeReference type)
private TypeReference	doInferTypeForExpression(Expression expression, TypeReference expectedType, boolean forceInferChildren, int flags)
private static TypeReference	ensureReferenceType(TypeReference mappedType)
private void	findNestedAssignments(Expression expression, TypeAnalysis.ExpressionToInfer parent)
(package private) static TypeReference	getFieldType(FieldReference field)
private static int	getInformationAmount(TypeReference type)
private void	identifySingleLoadVariables()
private TypeReference	inferBinaryArguments(Expression left, Expression right, TypeReference expectedType, boolean forceInferChildren, TypeReference leftPreferred, TypeReference rightPreferred, int operandFlags)
private TypeReference	inferBinaryExpression(AstCode code, List<Expression> arguments, int flags)
private TypeReference	inferCall(Expression expression, TypeReference expectedType, boolean forceInferChildren)
private TypeReference	inferDynamicCall(Expression expression, TypeReference expectedType, boolean forceInferChildren)
private TypeReference	inferInitObject(Expression expression, TypeReference expectedType, boolean forceInferChildren, MethodReference operand, List<Expression> arguments)
private TypeReference	inferTypeForExpression(Expression expression, TypeReference expectedType)
private TypeReference	inferTypeForExpression(Expression expression, TypeReference expectedType, boolean forceInferChildren)
private TypeReference	inferTypeForExpression(Expression expression, TypeReference expectedType, boolean forceInferChildren, int flags)
private TypeReference	inferTypeForExpression(Expression expression, TypeReference expectedType, int flags)
private TypeReference	inferTypeForVariable(Variable v, TypeReference expectedType)
private TypeReference	inferTypeForVariable(Variable v, TypeReference expectedType, boolean favorExpectedOverActual, int flags)
private TypeReference	inferTypeForVariable(Variable v, TypeReference expectedType, int flags)
private void	inferTypesForVariables(boolean assignVariableTypesBasedOnPartialInformation)
private void	invalidateDependentExpressions(Expression expression, Variable variable)
static boolean	isBoolean(TypeReference type)
private boolean	isSameType(TypeReference t1, TypeReference t2)
private boolean	isSingleStoreBoolean(Variable variable)
private boolean	isThisParameter(Variable variable)
static void	reset(DecompilerContext context, Block method)
static void	run(DecompilerContext context, Block method)
private void	runInference()
private void	runInference(Expression expression)
private void	runInference(Expression expression, int flags)
private boolean	shouldInferVariableType(Variable variable)
private static boolean	shouldResetVariableType(Variable variable, boolean preserveTypesFromMetadata, boolean preserveGenericTypesFromMetadata)
(package private) static TypeReference	substituteTypeArguments(TypeReference type, MemberReference member)
static <T> boolean	trueForAll(Iterable<T> sequence, Predicate<T> condition)
private TypeReference	typeWithMoreInformation(TypeReference leftPreferred, TypeReference rightPreferred)
private void	verifyResults()

Methods inherited from class Object

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

Field Details

FLAG_BOOLEAN_PROHIBITED

private static final int FLAG_BOOLEAN_PROHIBITED

See Also:

• Constant Field Values

_allExpressions

private final List<TypeAnalysis.ExpressionToInfer> _allExpressions

_singleStoreVariables

private final Set<Variable> _singleStoreVariables

_singleLoadVariables

private final Set<Variable> _singleLoadVariables

_allVariables

private final Set<Variable> _allVariables

_assignmentExpressions

private final Map<Variable, List<TypeAnalysis.ExpressionToInfer>> _assignmentExpressions

_previouslyInferred

private final Map<Variable, Set<TypeReference>> _previouslyInferred

_inferredVariableTypes

private final IdentityHashMap<Variable, TypeReference> _inferredVariableTypes

_stack

private final Stack<Expression> _stack

_context

private DecompilerContext _context

_factory

private CoreMetadataFactory _factory

_preserveMetadataTypes

private boolean _preserveMetadataTypes

_preserveMetadataGenericTypes

private boolean _preserveMetadataGenericTypes

_doneInitializing

private boolean _doneInitializing

Constructor Details

TypeAnalysis

public TypeAnalysis()

Method Details

run

public static void run(DecompilerContext context,
 Block method)

reset

public static void reset(DecompilerContext context,
 Block method)

createDependencyGraph

private void createDependencyGraph(Node node)

findNestedAssignments

private void findNestedAssignments(Expression expression,
 TypeAnalysis.ExpressionToInfer parent)

isSingleStoreBoolean

private boolean isSingleStoreBoolean(Variable variable)

identifySingleLoadVariables

private void identifySingleLoadVariables()

runInference

private void runInference()

verifyResults

private void verifyResults()

inferTypesForVariables

private void inferTypesForVariables(boolean assignVariableTypesBasedOnPartialInformation)

isThisParameter

private boolean isThisParameter(Variable variable)

shouldInferVariableType

private boolean shouldInferVariableType(Variable variable)

shouldResetVariableType

private static boolean shouldResetVariableType(Variable variable,
 boolean preserveTypesFromMetadata,
 boolean preserveGenericTypesFromMetadata)

runInference

private void runInference(Expression expression)

runInference

private void runInference(Expression expression,
 int flags)

invalidateDependentExpressions

private void invalidateDependentExpressions(Expression expression,
 Variable variable)

inferTypeForExpression

private TypeReference inferTypeForExpression(Expression expression,
 TypeReference expectedType)

inferTypeForExpression

private TypeReference inferTypeForExpression(Expression expression,
 TypeReference expectedType,
 int flags)

inferTypeForExpression

private TypeReference inferTypeForExpression(Expression expression,
 TypeReference expectedType,
 boolean forceInferChildren)

inferTypeForExpression

private TypeReference inferTypeForExpression(Expression expression,
 TypeReference expectedType,
 boolean forceInferChildren,
 int flags)

doInferTypeForExpression

private TypeReference doInferTypeForExpression(Expression expression,
 TypeReference expectedType,
 boolean forceInferChildren,
 int flags)

inferInitObject

private TypeReference inferInitObject(Expression expression,
 TypeReference expectedType,
 boolean forceInferChildren,
 MethodReference operand,
 List<Expression> arguments)

cleanTypeArguments

private TypeReference cleanTypeArguments(TypeReference newType,
 TypeReference alternateType)

inferBinaryExpression

private TypeReference inferBinaryExpression(AstCode code,
 List<Expression> arguments,
 int flags)

inferDynamicCall

private TypeReference inferDynamicCall(Expression expression,
 TypeReference expectedType,
 boolean forceInferChildren)

inferCall

private TypeReference inferCall(Expression expression,
 TypeReference expectedType,
 boolean forceInferChildren)

inferTypeForVariable

private TypeReference inferTypeForVariable(Variable v,
 TypeReference expectedType)

inferTypeForVariable

private TypeReference inferTypeForVariable(Variable v,
 TypeReference expectedType,
 int flags)

inferTypeForVariable

private TypeReference inferTypeForVariable(Variable v,
 TypeReference expectedType,
 boolean favorExpectedOverActual,
 int flags)

adjustType

private static TypeReference adjustType(TypeReference type,
 int flags)

doBinaryNumericPromotion

private TypeReference doBinaryNumericPromotion(TypeReference type)

inferBinaryArguments

private TypeReference inferBinaryArguments(Expression left,
 Expression right,
 TypeReference expectedType,
 boolean forceInferChildren,
 TypeReference leftPreferred,
 TypeReference rightPreferred,
 int operandFlags)

typeWithMoreInformation

private TypeReference typeWithMoreInformation(TypeReference leftPreferred,
 TypeReference rightPreferred)

getInformationAmount

private static int getInformationAmount(TypeReference type)

getFieldType

static TypeReference getFieldType(FieldReference field)

substituteTypeArguments

static TypeReference substituteTypeArguments(TypeReference type,
 MemberReference member)

isSameType

private boolean isSameType(TypeReference t1,
 TypeReference t2)

anyDone

private boolean anyDone(List<TypeAnalysis.ExpressionToInfer> expressions)

allDone

private boolean allDone(List<TypeAnalysis.ExpressionToInfer> expressions)

trueForAll

public static <T> boolean trueForAll(Iterable<T> sequence,
 Predicate<T> condition)

isBoolean

public static boolean isBoolean(TypeReference type)

ensureReferenceType

private static TypeReference ensureReferenceType(TypeReference mappedType)