Package gnu.expr
Interface TypeValue
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- All Superinterfaces:
Type
- All Known Implementing Classes:
AttributeType
,ElementType
,GenArrayType
,LangObjType
,LangPrimType
,MappedArrayType
,MultValuesType
,NodeSetType
,NodeType
,OccurrenceType
,ProcessingInstructionType
,SeqSizeType
,XDataType
,XIntegerType
,XStringType
,XTimeType
public interface TypeValue extends Type
A Type or a Type expression. Can be used for higher-level types that do not map directly to a Type.
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Method Summary
All Methods Instance Methods Abstract Methods Default Methods Modifier and Type Method Description 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 ....default String
encodeType(Language language)
Procedure
getConstructor()
Get the constructor function for this type.Type
getImplementationType()
The lower-level Type used to represent instances of this type.-
Methods inherited from interface java.lang.reflect.Type
getTypeName
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Method Detail
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getImplementationType
Type getImplementationType()
The lower-level Type used to represent instances of this type.
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emitTestIf
void emitTestIf(Variable incoming, Declaration decl, Compilation comp)
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.- 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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emitIsInstance
void emitIsInstance(Variable incoming, Compilation comp, Target target)
Emit code for incoming instanceof this_type. The implementation can useInstanceOf .emitIsInstance
which is a conveniece method that callsemitTestIf
.- 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
Procedure getConstructor()
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.
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convertValue
Expression convertValue(Expression value)
Return converted expression or null.
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