Package gnu.kawa.lispexpr
Class LangPrimType
- java.lang.Object
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- gnu.bytecode.Type
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- gnu.bytecode.PrimType
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- gnu.kawa.lispexpr.LangPrimType
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- All Implemented Interfaces:
HasOwningField
,TypeValue
,Type
public class LangPrimType extends PrimType implements TypeValue, HasOwningField
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.
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Nested Class Summary
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Nested classes/interfaces inherited from class gnu.bytecode.Type
Type.NeverReturns
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Field Summary
Fields Modifier and Type Field Description static PrimType
byteType
static LangPrimType
characterOrEofType
static LangPrimType
characterType
static LangPrimType
charType
static PrimType
doubleType
static PrimType
floatType
static PrimType
intType
static LangPrimType
isTrueType
Special type used for boolean-valued guard expressions in patterns.static PrimType
longType
static PrimType
shortType
static LangPrimType
stringCursorType
static LangPrimType
unsignedByteType
static LangPrimType
unsignedIntType
static LangPrimType
unsignedLongType
static LangPrimType
unsignedShortType
static PrimType
voidType
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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
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Constructor Summary
Constructors Constructor Description LangPrimType(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)
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description ClassType
boxedType()
char
charValue(Object value)
Coerce value to a char.Object
coerceFromObject(Object obj)
Convert an object to a value of this Type.Object
coerceToObject(Object obj)
Given a raw JVM value convert it to an object of this type.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.static Object
convertIntegerLiteral(IntNum ivalue, PrimType type, boolean nativeValue)
Object
convertToRaw(Object obj)
Expression
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)
String
encodeType(Language language)
Procedure
getConstructor()
Get the constructor function for this type.Type
getImplementationType()
Return Java-level implementation type.Field
getOwningField()
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
isUnsigned()
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Methods inherited from class gnu.bytecode.PrimType
booleanValue, compare, promotedType, unboxedType
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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
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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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Field Detail
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byteType
public static final PrimType byteType
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shortType
public static final PrimType shortType
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intType
public static final PrimType intType
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longType
public static final PrimType longType
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floatType
public static final PrimType floatType
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doubleType
public static final PrimType doubleType
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charType
public static final LangPrimType charType
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voidType
public static final PrimType voidType
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characterType
public static final LangPrimType characterType
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characterOrEofType
public static final LangPrimType characterOrEofType
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unsignedLongType
public static final LangPrimType unsignedLongType
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unsignedIntType
public static final LangPrimType unsignedIntType
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unsignedShortType
public static final LangPrimType unsignedShortType
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unsignedByteType
public static final LangPrimType unsignedByteType
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stringCursorType
public static final LangPrimType stringCursorType
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isTrueType
public static final LangPrimType isTrueType
Special type used for boolean-valued guard expressions in patterns.
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Constructor Detail
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LangPrimType
public LangPrimType(PrimType type)
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Method Detail
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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 interfaceTypeValue
- Overrides:
getImplementationType
in classType
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getOwningField
public Field getOwningField()
Description copied from interface:HasOwningField
If non-null a field that has this value.- Specified by:
getOwningField
in interfaceHasOwningField
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isUnsigned
public boolean isUnsigned()
- Overrides:
isUnsigned
in classPrimType
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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 classPrimType
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charValue
public char charValue(Object value)
Description copied from class:PrimType
Coerce value to a char. Only defined if getSignature() is "C".
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emitIsInstance
public void emitIsInstance(CodeAttr code)
- Overrides:
emitIsInstance
in classPrimType
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emitCoerceFromObject
public void emitCoerceFromObject(CodeAttr code)
Description copied from class:Type
Compile code to coerce/convert from Object to this type.- Overrides:
emitCoerceFromObject
in classPrimType
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coerceToObject
public Object coerceToObject(Object obj)
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
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convertToRaw
public Object convertToRaw(Object obj)
- Overrides:
convertToRaw
in classPrimType
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emitCoerceToObject
public void emitCoerceToObject(CodeAttr code)
Description copied from class:Type
Compile code to convert a object of this type on the stack to Object.- Overrides:
emitCoerceToObject
in classPrimType
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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.
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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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emitTestIfNumber
public static void emitTestIfNumber(Variable incoming, Declaration decl, Type type, Compilation comp)
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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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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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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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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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convertIntegerLiteral
public static Object convertIntegerLiteral(IntNum ivalue, PrimType type, boolean nativeValue)
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encodeType
public String encodeType(Language language)
- Specified by:
encodeType
in interfaceTypeValue
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