Package gnu.kawa.reflect

Class MappedArrayType

java.lang.Object

gnu.bytecode.Type

gnu.bytecode.ObjectType

gnu.kawa.reflect.MappedArrayType

All Implemented Interfaces:

TypeValue, Type

public class MappedArrayType
extends ObjectType
implements TypeValue

An array type where elements are copied from a sequence. A MappedArrayType[T] is implemented using a T (native) array. It is compatible with a sequence whose elements are compatible with T. Each element is copied (with coercion) from the sequence into the array.

Nested Class Summary

Nested classes/interfaces inherited from class gnu.bytecode.Type

Type.NeverReturns

Field Summary

Fields

Modifier and Type	Field	Description
protected ObjectType	implementationType

Fields inherited from class gnu.bytecode.ObjectType

flags

Fields inherited from class gnu.bytecode.Type

boolean_ctype, boolean_type, booleanType, booleanValue_method, byte_type, byteType, char_type, charType, clone_method, double_type, doubleType, doubleValue_method, errorType, float_type, floatType, floatValue_method, int_type, intType, intValue_method, java_lang_Class_type, javalangannotationAnnotationType, javalangBooleanType, javalangCharacterType, javalangClassType, javalanginvokeMethodHandleType, javalangNumberType, javalangObjectType, javalangStringType, javalangThrowableType, long_type, longType, longValue_method, neverReturnsType, nullType, number_type, objectType, pointer_type, reflectClass, short_type, shortType, string_type, throwable_type, toString_method, tostring_type, toStringType, typeArray0, void_type, voidType

Constructor Summary

Constructors

Constructor	Description
MappedArrayType(Type elementType)

Method Summary

Modifier and Type	Method	Description
Expression	convertValue(Expression value)	Return converted expression or null.
void	emitCoerceFromObject(CodeAttr code)	Compile (in given method) cast from Object to this Type.
void	emitIsInstance(Variable incoming, Compilation comp, Target target)	Emit code for incoming instanceof this_type.
void	emitTestIf(Variable incoming, Declaration decl, Compilation comp)	Emit code for if (incoming instanceof this_type) decl = incoming ....
String	encodeType(Language language)
Type	getComponentType()
Procedure	getConstructor()	Get the constructor function for this type.
Type	getImplementationType()	Return Java-level implementation type.
String	getName()
Type	getRealType()	If this is a type alias, get the aliased type.
int	isCompatibleWithValue(Type valueType)	If this is the target type, is a given source type compatible?
static Type	maybe(Type type, int nesting)
String	toString()

Methods inherited from class gnu.bytecode.ObjectType

coerceFromObject, compare, getContextClass, getContextClassLoader, getField, getInterfaces, getInternalName, getMethod, getMethods, getMethods, getReflectClass, getSuperclass, isExisting, isInstance, setExisting

Methods inherited from class gnu.bytecode.Type

coerceToObject, emitCoerceToObject, emitConvertFromPrimitive, emitIsInstance, getGenericSignature, getMaybeGenericSignature, getRawType, getSignature, getSize, getSizeInWords, getType, hashCode, isCompatibleWithValue, isInterface, isMoreSpecific, isSame, isSubtype, isValidJavaTypeName, isVoid, lookupType, lowestCommonSharedType, lowestCommonSuperType, make, make, printSignature, promote, promoteIfUnsigned, registerTypeForClass, setGenericSignature, setName, setReflectClass, setSignature, signatureLength, signatureLength, signatureToName, signatureToPrimitive, signatureToType, signatureToType, swappedCompareResult

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.reflect.Type

getTypeName

Field Details

implementationType

protected ObjectType implementationType

Constructor Details

MappedArrayType

public MappedArrayType(Type elementType)

Method Details

maybe

public static Type maybe(Type type,
 int nesting)

getComponentType

public Type getComponentType()

getImplementationType

public Type getImplementationType()

Description copied from class: Type

Return Java-level implementation type. The type used to implement types not natively understood by the JVM or the Java language. Usually, the identity function. However, a language might handle union types or template types or type expressions calculated at run time. In that case return the type used at the Java level, and known at compile time.

Specified by:

getImplementationType in interface TypeValue

Overrides:

getImplementationType in class Type

getRealType

public Type getRealType()

Description copied from class: Type

If this is a type alias, get the aliased type. This is semi-deprecated.

Overrides:

getRealType in class Type

emitTestIf

public void emitTestIf(Variable incoming,
 Declaration decl,
 Compilation comp)

Description copied from interface: TypeValue

Emit code for if (incoming instanceof this_type) decl = incoming .... This method is designed for typeswitch applications, where this call is the first part of a conditional, so it must be followed by calls to emitElse and emitFi.

Specified by:

emitTestIf in interface TypeValue

Parameters:

incoming - Contains the value we are testing to see if it has the type of this. If null, use top-of-stack. May not be null if decl is non-null.

decl - If non-null, assign value after coercion to Declaration.

comp - The compilation state.

toString

public String toString()

Overrides:

toString in class Type

getName

public String getName()

Overrides:

getName in class Type

isCompatibleWithValue

public int isCompatibleWithValue(Type valueType)

Description copied from class: Type

If this is the target type, is a given source type compatible?

Overrides:

isCompatibleWithValue in class Type

Returns:

-1 if not compatible; 0 if need to check at run-time; 1 if compatible; 2 if compatible and no conversion or cast needed. We also return 0 for some "narrowing" conversions even if we know they will always succeed, so as to make such conversions less preferred when doing method overloading.

convertValue

public Expression convertValue(Expression value)

Description copied from interface: TypeValue

Return converted expression or null.

Specified by:

convertValue in interface TypeValue

getConstructor

public Procedure getConstructor()

Description copied from interface: TypeValue

Get the constructor function for this type. Returns null if there is no contructor function. Also returns null if this extends ClassType or ArrayType and standard Java constructors (<init> methods) should be used.

Specified by:

getConstructor in interface TypeValue

emitIsInstance

public void emitIsInstance(Variable incoming,
 Compilation comp,
 Target target)

Description copied from interface: TypeValue

Emit code for incoming instanceof this_type. The implementation can use InstanceOf .emitIsInstance which is a conveniece method that calls emitTestIf.

Specified by:

emitIsInstance in interface TypeValue

Parameters:

incoming - Contains the value we are testing to see if it has the the type of 'this'. If null, use top-of-stack.

comp - The compilation state.

target - Where to leave the result.

encodeType

public String encodeType(Language language)

Specified by:

encodeType in interface TypeValue

emitCoerceFromObject

public void emitCoerceFromObject(CodeAttr code)

Description copied from class: ObjectType

Compile (in given method) cast from Object to this Type.

Overrides:

emitCoerceFromObject in class ObjectType