Package gnu.kawa.lispexpr

Class GenArrayType

java.lang.Object

gnu.bytecode.Type

gnu.bytecode.ObjectType

gnu.bytecode.ParameterizedType

gnu.kawa.lispexpr.GenArrayType

All Implemented Interfaces:

TypeValue, Type

public class GenArrayType
extends ParameterizedType
implements TypeValue

Type of multi-dimensional arrays. These are implemented using gnu.lists.Array. This type can refine Array with a specific rank and element type.

Nested Class Summary

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

Type.NeverReturns

Field Summary

Fields

Modifier and Type	Field	Description
static final GenArrayType	generalInstance
static final ClassType	typeArray

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
GenArrayType(int rank, Type elementType)

Method Summary

Modifier and Type	Method	Description
int	compare(Type other)	Return a numeric code showing "subtype" relationship: 1: if other is a pure subtype of this; 0: if has the same values; -1: if this is a pure subtype of other; -2: if they have values in common but neither is a subtype of the other; -3: if the types have no values in common.
Expression	convertValue(Expression value)	Return converted expression or null.
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.
int	rank()

Methods inherited from class gnu.bytecode.ParameterizedType

emitCoerceFromObject, emitIsInstance, equals, getGenericSignature, getName, getRawType, getReflectClass, getSignature, getTypeArgumentBound, getTypeArgumentType, getTypeArgumentTypes, setTypeArgumentBound, setTypeArgumentBounds, toString

Methods inherited from class gnu.bytecode.ObjectType

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

Methods inherited from class gnu.bytecode.Type

coerceToObject, emitCoerceToObject, emitConvertFromPrimitive, getMaybeGenericSignature, getRealType, getSize, getSizeInWords, getType, hashCode, isCompatibleWithValue, 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, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.lang.reflect.Type

getTypeName

Field Details

typeArray

public static final ClassType typeArray

generalInstance

public static final GenArrayType generalInstance

Constructor Details

GenArrayType

public GenArrayType(int rank,
 Type elementType)

Method Details

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

rank

public int rank()

getComponentType

public Type getComponentType()

compare

public int compare(Type other)

Description copied from class: Type

Return a numeric code showing "subtype" relationship: 1: if other is a pure subtype of this; 0: if has the same values; -1: if this is a pure subtype of other; -2: if they have values in common but neither is a subtype of the other; -3: if the types have no values in common. "Same values" is rather loose; by "A is a subtype of B" we mean that all instance of A can be "widened" to B. More formally, A.compare(B) returns: 1: all B values can be converted to A without a coercion failure (i.e. a ClassCastException or overflow or major loss of information), but not vice versa. 0: all A values can be converted to B without a coercion failure and vice versa; -1: all A values can be converted to B without a coercion failure but not vice versa; -2: there are (potentially) some A values that can be converted to B, and some B values can be converted to A; -3: there are no A values that can be converted to B, and neither are there any B values that can be converted to A.

Overrides:

compare in class ParameterizedType

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

encodeType

public String encodeType(Language language)

Specified by:

encodeType 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.

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.