public class DefaultTypeCheckingExtension extends TypeCheckingExtension
Modifier and Type | Field and Description |
---|---|
protected List<TypeCheckingExtension> |
handlers |
typeCheckingVisitor
Constructor and Description |
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DefaultTypeCheckingExtension(StaticTypeCheckingVisitor typeCheckingVisitor) |
Modifier and Type | Method and Description |
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void |
addHandler(TypeCheckingExtension handler) |
void |
afterMethodCall(MethodCall call)
Allows the extension to perform additional tasks after the type checker actually visits a method call.
|
void |
afterVisitClass(ClassNode node)
Allows the extension to perform additional tasks after the type checker actually visited a class node.
|
void |
afterVisitMethod(MethodNode node)
Allows the extension to perform additional tasks after the type checker actually visited a method node.
|
boolean |
beforeMethodCall(MethodCall call)
Allows the extension to perform additional tasks before the type checker actually visits a method call.
|
boolean |
beforeVisitClass(ClassNode node)
Allows the extension to perform additional tasks before the type checker actually visits a class node.
|
boolean |
beforeVisitMethod(MethodNode node)
Allows the extension to perform additional tasks before the type checker actually visits a method node.
|
void |
finish()
Subclasses should implement this method if they need to perform additional
checks after the type checker has finished its work.
|
List<MethodNode> |
handleAmbiguousMethods(List<MethodNode> nodes,
Expression origin)
This method is called by the type checker before throwing an "ambiguous method" error, giving the chance
to the extension to select the method properly.
|
boolean |
handleIncompatibleAssignment(ClassNode lhsType,
ClassNode rhsType,
Expression assignmentExpression)
This method is called by the type checker when an assignment is not allowed by the type checker.
|
boolean |
handleIncompatibleReturnType(ReturnStatement returnStatement,
ClassNode inferredReturnType)
Allows the extension to catch incompatible return types.
|
List<MethodNode> |
handleMissingMethod(ClassNode receiver,
String name,
ArgumentListExpression argumentList,
ClassNode[] argumentTypes,
MethodCall call)
This method is called by the type checker when a method call cannot be resolved.
|
boolean |
handleUnresolvedAttribute(AttributeExpression aexp)
This method is called by the type checker when an attribute expression cannot
be resolved (for example, when an attribute doesn't exist).
|
boolean |
handleUnresolvedProperty(PropertyExpression pexp)
This method is called by the type checker when a property expression cannot
be resolved (for example, when a property doesn't exist).
|
boolean |
handleUnresolvedVariableExpression(VariableExpression vexp)
This method is called by the type checker when a variable expression cannot
be resolved.
|
void |
onMethodSelection(Expression expression,
MethodNode target)
Allows the extension to listen to method selection events.
|
void |
removeHandler(TypeCheckingExtension handler) |
void |
setup()
Subclasses should implement this method whenever they need to perform
special checks before the type checker starts working.
|
addStaticTypeError, buildListType, buildMapType, classNodeFor, classNodeFor, existsProperty, existsProperty, extractStaticReceiver, getArgumentTypes, getTargetMethod, getType, isStaticMethodCallOnClass, lookupClassNodeFor, parameterizedType, storeType
protected final List<TypeCheckingExtension> handlers
public DefaultTypeCheckingExtension(StaticTypeCheckingVisitor typeCheckingVisitor)
public void addHandler(TypeCheckingExtension handler)
public void removeHandler(TypeCheckingExtension handler)
public boolean handleUnresolvedVariableExpression(VariableExpression vexp)
TypeCheckingExtension
handleUnresolvedVariableExpression
in class TypeCheckingExtension
vexp
- the unresolved variable extensionboolean
false if the extension doesn't handle it,
true if the extension handles this variable.public boolean handleUnresolvedProperty(PropertyExpression pexp)
TypeCheckingExtension
handleUnresolvedProperty
in class TypeCheckingExtension
pexp
- the unresolved propertyboolean
false if this extension doesn't resolve the property, true
if it resolves the property.public boolean handleUnresolvedAttribute(AttributeExpression aexp)
TypeCheckingExtension
handleUnresolvedAttribute
in class TypeCheckingExtension
aexp
- the unresolved attributeboolean
false if this extension doesn't resolve the attribute, true
if it resolves the attribute.public boolean handleIncompatibleAssignment(ClassNode lhsType, ClassNode rhsType, Expression assignmentExpression)
TypeCheckingExtension
handleIncompatibleAssignment
in class TypeCheckingExtension
lhsType
- the type of the left hand side of the assignment, as found by the type checkerrhsType
- the type of the right hand side of the assignment, as found by the type checkerassignmentExpression
- the assignment expression which triggered this callboolean
false if the extension does not handle this assignment, true otherwisepublic boolean handleIncompatibleReturnType(ReturnStatement returnStatement, ClassNode inferredReturnType)
TypeCheckingExtension
handleIncompatibleReturnType
in class TypeCheckingExtension
returnStatement
- the statement that triggered the errorinferredReturnType
- the inferred return type for this statementpublic List<MethodNode> handleAmbiguousMethods(List<MethodNode> nodes, Expression origin)
TypeCheckingExtension
handleAmbiguousMethods
in class TypeCheckingExtension
nodes
- the list of ambiguous methodsorigin
- the expression which originated the method selection processpublic List<MethodNode> handleMissingMethod(ClassNode receiver, String name, ArgumentListExpression argumentList, ClassNode[] argumentTypes, MethodCall call)
TypeCheckingExtension
handleMissingMethod
in class TypeCheckingExtension
receiver
- the type of the receivername
- the name of the called methodargumentList
- the list of arguments of the callargumentTypes
- the types of the arguments of the callcall
- the method call itself, if neededpublic void afterVisitMethod(MethodNode node)
TypeCheckingExtension
TypeCheckingMode.SKIP
.afterVisitMethod
in class TypeCheckingExtension
node
- a method nodepublic boolean beforeVisitMethod(MethodNode node)
TypeCheckingExtension
TypeCheckingMode.SKIP
.beforeVisitMethod
in class TypeCheckingExtension
node
- a method nodepublic void afterVisitClass(ClassNode node)
TypeCheckingExtension
TypeCheckingMode.SKIP
.afterVisitClass
in class TypeCheckingExtension
node
- a class nodepublic boolean beforeVisitClass(ClassNode node)
TypeCheckingExtension
TypeCheckingMode.SKIP
.beforeVisitClass
in class TypeCheckingExtension
node
- a class nodepublic void afterMethodCall(MethodCall call)
TypeCheckingExtension
TypeCheckingMode.SKIP
.afterMethodCall
in class TypeCheckingExtension
call
- a method call, either a MethodCallExpression
, StaticMethodCallExpression
, or ConstructorCallExpression
public boolean beforeMethodCall(MethodCall call)
TypeCheckingExtension
TypeCheckingMode.SKIP
.beforeMethodCall
in class TypeCheckingExtension
call
- a method call, either a MethodCallExpression
, StaticMethodCallExpression
, or ConstructorCallExpression
public void onMethodSelection(Expression expression, MethodNode target)
TypeCheckingExtension
onMethodSelection
in class TypeCheckingExtension
expression
- the expression for which a corresponding method has been foundtarget
- the method which has been chosen by the type checkerpublic void setup()
TypeCheckingExtension
setup
in class TypeCheckingExtension
public void finish()
TypeCheckingExtension
finish
in class TypeCheckingExtension