Package gnu.kawa.lispexpr
Class LangPrimType
java.lang.Object
gnu.bytecode.Type
gnu.bytecode.PrimType
gnu.kawa.lispexpr.LangPrimType
- All Implemented Interfaces:
HasOwningField
,TypeValue
,Type
Use to implement some special types that convert differently.
May not be needed/appropriate any more now that we support
arithmetic on a mix of Java and Kawa types.
-
Nested Class Summary
Nested classes/interfaces inherited from class gnu.bytecode.Type
Type.NeverReturns
-
Field Summary
FieldsModifier and TypeFieldDescriptionstatic final PrimType
static final LangPrimType
static final LangPrimType
static final LangPrimType
static final PrimType
static final PrimType
static final PrimType
static final LangPrimType
Special type used for boolean-valued guard expressions in patterns.static final PrimType
static final PrimType
static final LangPrimType
static final LangPrimType
static final LangPrimType
static final LangPrimType
static final LangPrimType
static final PrimType
Fields inherited from class gnu.bytecode.Type
boolean_ctype, boolean_type, booleanType, booleanValue_method, byte_type, char_type, clone_method, double_type, doubleValue_method, errorType, float_type, floatValue_method, int_type, intValue_method, java_lang_Class_type, javalangannotationAnnotationType, javalangBooleanType, javalangCharacterType, javalangClassType, javalanginvokeMethodHandleType, javalangNumberType, javalangObjectType, javalangStringType, javalangThrowableType, long_type, longValue_method, neverReturnsType, nullType, number_type, objectType, pointer_type, reflectClass, short_type, string_type, throwable_type, toString_method, tostring_type, toStringType, typeArray0, void_type
-
Constructor Summary
ConstructorsConstructorDescriptionLangPrimType
(PrimType type) LangPrimType
(PrimType type, Language language) LangPrimType
(String nam, String sig, int siz, Class reflectClass) LangPrimType
(String nam, String sig, int siz, Class reflectClass, Language language) -
Method Summary
Modifier and TypeMethodDescriptionchar
Coerce value to a char.coerceFromObject
(Object obj) Convert an object to a value of this Type.coerceToObject
(Object obj) Given a raw JVM value convert it to an object of this type.int
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.static Object
convertIntegerLiteral
(IntNum ivalue, PrimType type, boolean nativeValue) convertToRaw
(Object obj) convertValue
(Expression value) Return converted expression or null.void
emitCoerceFromObject
(CodeAttr code) Compile code to coerce/convert from Object to this type.void
emitCoerceToObject
(CodeAttr code) Compile code to convert a object of this type on the stack to Object.void
emitIsInstance
(CodeAttr code) 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 ....static void
emitTestIfNumber
(Variable incoming, Declaration decl, Type type, Compilation comp) encodeType
(Language language) Get the constructor function for this type.Return Java-level implementation type.If non-null a field that has this value.int
isCompatibleWithValue
(Type valueType) If this is the target type, is a given source type compatible?boolean
Methods inherited from class gnu.bytecode.PrimType
booleanValue, compare, promotedType, unboxedType
Methods inherited from class gnu.bytecode.Type
emitConvertFromPrimitive, getGenericSignature, getMaybeGenericSignature, getName, getRawType, getRealType, getReflectClass, getSignature, getSize, getSizeInWords, getType, hashCode, isCompatibleWithValue, isExisting, isInstance, 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
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
-
byteType
-
shortType
-
intType
-
longType
-
floatType
-
doubleType
-
charType
-
voidType
-
characterType
-
characterOrEofType
-
unsignedLongType
-
unsignedIntType
-
unsignedShortType
-
unsignedByteType
-
stringCursorType
-
isTrueType
Special type used for boolean-valued guard expressions in patterns.
-
-
Constructor Details
-
LangPrimType
-
LangPrimType
-
LangPrimType
-
LangPrimType
-
-
Method Details
-
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 interfaceTypeValue
- Overrides:
getImplementationType
in classType
-
getOwningField
Description copied from interface:HasOwningField
If non-null a field that has this value.- Specified by:
getOwningField
in interfaceHasOwningField
-
isUnsigned
public boolean isUnsigned()- Overrides:
isUnsigned
in classPrimType
-
boxedType
-
coerceFromObject
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 classPrimType
-
charValue
Description copied from class:PrimType
Coerce value to a char. Only defined if getSignature() is "C". -
emitIsInstance
- Overrides:
emitIsInstance
in classPrimType
-
emitCoerceFromObject
Description copied from class:Type
Compile code to coerce/convert from Object to this type.- Overrides:
emitCoerceFromObject
in classPrimType
-
coerceToObject
Description copied from class:Type
Given a raw JVM value convert it to an object of this type. I.e. the argument is an object of the type returned bygetRawType()
, boxed as needed. The result may be a language-specific (boxed) value. Generally a no-op.- Overrides:
coerceToObject
in classType
-
convertToRaw
- Overrides:
convertToRaw
in classPrimType
-
emitCoerceToObject
Description copied from class:Type
Compile code to convert a object of this type on the stack to Object.- Overrides:
emitCoerceToObject
in classPrimType
-
compare
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. -
isCompatibleWithValue
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.
-
emitTestIfNumber
public static void emitTestIfNumber(Variable incoming, Declaration decl, Type type, Compilation comp) -
emitTestIf
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.
-
convertValue
Description copied from interface:TypeValue
Return converted expression or null.- Specified by:
convertValue
in interfaceTypeValue
-
emitIsInstance
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.
-
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
-
convertIntegerLiteral
-
encodeType
- Specified by:
encodeType
in interfaceTypeValue
-