Package gnu.kawa.lispexpr
Class LangObjType
- java.lang.Object
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- gnu.bytecode.Type
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- gnu.bytecode.ObjectType
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- gnu.bytecode.SpecialObjectType
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- gnu.kawa.lispexpr.LangObjType
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- Direct Known Subclasses:
SeqSizeType
public class LangObjType extends SpecialObjectType implements TypeValue
A wrapper around a class type. A LangObjType is implemented using some class type, but may have a custom (language-specific) coercion method, constructor, and name.
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Nested Class Summary
Nested Classes Modifier and Type Class Description static class
LangObjType.ArgListBuilder
static class
LangObjType.SimpleVectorBuilder
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Nested classes/interfaces inherited from class gnu.bytecode.Type
Type.NeverReturns
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Field Summary
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Fields inherited from class gnu.bytecode.SpecialObjectType
implementationType
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Fields inherited from class gnu.bytecode.ObjectType
flags
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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
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description static DFloNum
coerceDFloNum(Object value)
Object
coerceFromObject(Object obj)
Convert an object to a value of this Type.static IntNum
coerceIntNum(Object value)
static Numeric
coerceNumeric(Object value)
static RatNum
coerceRatNum(Object value)
static RealNum
coerceRealNum(Object value)
static Class
coerceToClass(Object obj)
static Class
coerceToClassOrNull(Object type)
static ClassType
coerceToClassType(Object obj)
static ClassType
coerceToClassTypeOrNull(Object type)
static FVector
coerceToConstVector(Object obj)
static Procedure
coerceToProcedure(Object obj)
static Procedure
coerceToProcedureOrNull(Object value)
static Type
coerceToType(Object obj)
static Type
coerceToTypeOrNull(Object type)
static U8Vector
coerceToU8Vector(Object obj)
protected Method
coercionOrNullMethod()
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.String
elementGetterMethodName()
String
elementSetterMethodName()
void
emitCoerceFromObject(CodeAttr code)
Compile (in given method) cast from Object to this Type.boolean
emitCoercionOrNull(CodeAttr code)
void
emitConvertFromPrimitive(Type stackType, CodeAttr code)
Convert from stackType (usually PrimType) 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)
CompileBuildObject
getBuildObject()
Procedure
getConstructor()
Get the constructor function for this type.ObjectType
getConstructorType()
Type
getElementType()
static LangObjType
getInstanceFromClass(String name)
int
isCompatibleWithValue(Type valueType)
If this is the target type, is a given source type compatible?-
Methods inherited from class gnu.bytecode.SpecialObjectType
getDeclaredMethod, getField, getImplementationType, getInterfaces, getMethod, getMethods, getRealType, getReflectClass, getSuperclass
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Methods inherited from class gnu.bytecode.ObjectType
getContextClass, getContextClassLoader, getInternalName, getMethods, isExisting, isInstance, setExisting
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Methods inherited from class gnu.bytecode.Type
coerceToObject, emitCoerceToObject, emitIsInstance, getGenericSignature, getMaybeGenericSignature, getName, 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, toString
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, notify, notifyAll, wait, wait, wait
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Methods inherited from interface java.lang.reflect.Type
getTypeName
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Methods inherited from interface gnu.expr.TypeValue
getImplementationType
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Field Detail
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pathType
public static final LangObjType pathType
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filepathType
public static final LangObjType filepathType
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URIType
public static final LangObjType URIType
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typeClass
public static final LangObjType typeClass
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typeType
public static final LangObjType typeType
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typeClassType
public static final LangObjType typeClassType
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numericType
public static final LangObjType numericType
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realType
public static final LangObjType realType
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rationalType
public static final LangObjType rationalType
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integerType
public static final LangObjType integerType
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dflonumType
public static final LangObjType dflonumType
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vectorType
public static final LangObjType vectorType
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gvectorType
public static final LangObjType gvectorType
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constVectorType
public static final LangObjType constVectorType
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s8vectorType
public static final LangObjType s8vectorType
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u8vectorType
public static final LangObjType u8vectorType
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s16vectorType
public static final LangObjType s16vectorType
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u16vectorType
public static final LangObjType u16vectorType
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s32vectorType
public static final LangObjType s32vectorType
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u32vectorType
public static final LangObjType u32vectorType
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s64vectorType
public static final LangObjType s64vectorType
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u64vectorType
public static final LangObjType u64vectorType
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f32vectorType
public static final LangObjType f32vectorType
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f64vectorType
public static final LangObjType f64vectorType
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c16vectorType
public static final LangObjType c16vectorType
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bitvectorType
public static final LangObjType bitvectorType
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regexType
public static final LangObjType regexType
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stringType
public static final LangObjType stringType
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jstringType
public static final LangObjType jstringType
Wrapper for java.lang.String, with extra coercions.
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istringType
public static final LangObjType istringType
Immutuable string, implemented using IString
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listType
public static final LangObjType listType
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procedureType
public static final LangObjType procedureType
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promiseType
public static final LangObjType promiseType
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sequenceType
public static final LangObjType sequenceType
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dynamicType
public static final LangObjType dynamicType
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argListType
public static final LangObjType argListType
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argVectorType
public static final LangObjType argVectorType
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typeLangObjType
public static final ClassType typeLangObjType
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Method Detail
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getInstanceFromClass
public static LangObjType getInstanceFromClass(String name)
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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 classType
- 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.
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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 classSpecialObjectType
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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 useInstanceOf .emitIsInstance
which is a conveniece method that callsemitTestIf
.- Specified by:
emitIsInstance
in interfaceTypeValue
- 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.
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coercionOrNullMethod
protected Method coercionOrNullMethod()
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emitCoercionOrNull
public boolean emitCoercionOrNull(CodeAttr code)
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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 interfaceTypeValue
- 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.
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coerceFromObject
public Object coerceFromObject(Object obj)
Description copied from class:Type
Convert an object to a value of this Type. The result is actually of the implementation type, boxed as appropriate, so it is suitable for standard reflective operations, like the arguments to Field#set or Method#invoke. Throw a ClassCastException when this is not possible.- Overrides:
coerceFromObject
in classObjectType
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emitConvertFromPrimitive
public void emitConvertFromPrimitive(Type stackType, CodeAttr code)
Description copied from class:Type
Convert from stackType (usually PrimType) to this type. However, we might only convert part-way, to some object type. If converting to this type might fail at run-time, only convert to Object (as by emitCoerceToObject); a caller can usestackType.emitConvertFromObject
to convert the rest, but that might throw an exception. (This is a bit of a kludge.)- Overrides:
emitConvertFromPrimitive
in classType
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convertValue
public Expression convertValue(Expression value)
Description copied from interface:TypeValue
Return converted expression or null.- Specified by:
convertValue
in interfaceTypeValue
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emitCoerceFromObject
public void emitCoerceFromObject(CodeAttr code)
Description copied from class:ObjectType
Compile (in given method) cast from Object to this Type.- Overrides:
emitCoerceFromObject
in classObjectType
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getConstructorType
public ObjectType getConstructorType()
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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 interfaceTypeValue
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encodeType
public String encodeType(Language language)
- Specified by:
encodeType
in interfaceTypeValue
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getElementType
public Type getElementType()
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elementGetterMethodName
public String elementGetterMethodName()
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elementSetterMethodName
public String elementSetterMethodName()
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getBuildObject
public CompileBuildObject getBuildObject()
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