Package org.objectweb.asm
Class TypePath
java.lang.Object
org.objectweb.asm.TypePath
The path to a type argument, wildcard bound, array element type, or static inner type within an
enclosing type.
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Field Summary
FieldsModifier and TypeFieldDescriptionstatic final int
A type path step that steps into the element type of an array type.static final int
A type path step that steps into the nested type of a class type.static final int
A type path step that steps into a type argument of a generic type.private final byte[]
The byte array where the 'type_path' structure - as defined in the Java Virtual Machine Specification (JVMS) - corresponding to this TypePath is stored.private final int
The offset of the first byte of the type_path JVMS structure intypePathContainer
.static final int
A type path step that steps into the bound of a wildcard type. -
Constructor Summary
ConstructorsConstructorDescriptionTypePath
(byte[] typePathContainer, int typePathOffset) Constructs a new TypePath. -
Method Summary
Modifier and TypeMethodDescriptionstatic TypePath
fromString
(String typePath) Converts a type path in string form, in the format used bytoString()
, into a TypePath object.int
Returns the length of this path, i.e.int
getStep
(int index) Returns the value of the given step of this path.int
getStepArgument
(int index) Returns the index of the type argument that the given step is stepping into.(package private) static void
put
(TypePath typePath, ByteVector output) Puts the type_path JVMS structure corresponding to the given TypePath into the given ByteVector.toString()
Returns a string representation of this type path.
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Field Details
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ARRAY_ELEMENT
public static final int ARRAY_ELEMENTA type path step that steps into the element type of an array type. SeegetStep(int)
.- See Also:
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INNER_TYPE
public static final int INNER_TYPEA type path step that steps into the nested type of a class type. SeegetStep(int)
.- See Also:
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WILDCARD_BOUND
public static final int WILDCARD_BOUNDA type path step that steps into the bound of a wildcard type. SeegetStep(int)
.- See Also:
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TYPE_ARGUMENT
public static final int TYPE_ARGUMENTA type path step that steps into a type argument of a generic type. SeegetStep(int)
.- See Also:
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typePathContainer
private final byte[] typePathContainerThe byte array where the 'type_path' structure - as defined in the Java Virtual Machine Specification (JVMS) - corresponding to this TypePath is stored. The first byte of the structure in this array is given bytypePathOffset
.- See Also:
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typePathOffset
private final int typePathOffsetThe offset of the first byte of the type_path JVMS structure intypePathContainer
.
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Constructor Details
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TypePath
TypePath(byte[] typePathContainer, int typePathOffset) Constructs a new TypePath.- Parameters:
typePathContainer
- a byte array containing a type_path JVMS structure.typePathOffset
- the offset of the first byte of the type_path structure in typePathContainer.
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Method Details
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getLength
public int getLength()Returns the length of this path, i.e. its number of steps.- Returns:
- the length of this path.
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getStep
public int getStep(int index) Returns the value of the given step of this path.- Parameters:
index
- an index between 0 andgetLength()
, exclusive.- Returns:
- one of
ARRAY_ELEMENT
,INNER_TYPE
,WILDCARD_BOUND
, orTYPE_ARGUMENT
.
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getStepArgument
public int getStepArgument(int index) Returns the index of the type argument that the given step is stepping into. This method should only be used for steps whose value isTYPE_ARGUMENT
.- Parameters:
index
- an index between 0 andgetLength()
, exclusive.- Returns:
- the index of the type argument that the given step is stepping into.
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fromString
Converts a type path in string form, in the format used bytoString()
, into a TypePath object.- Parameters:
typePath
- a type path in string form, in the format used bytoString()
. May be null or empty.- Returns:
- the corresponding TypePath object, or null if the path is empty.
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toString
Returns a string representation of this type path.ARRAY_ELEMENT
steps are represented with '[',INNER_TYPE
steps with '.',WILDCARD_BOUND
steps with '*' andTYPE_ARGUMENT
steps with their type argument index in decimal form followed by ';'. -
put
Puts the type_path JVMS structure corresponding to the given TypePath into the given ByteVector.- Parameters:
typePath
- a TypePath instance, or null for empty paths.output
- where the type path must be put.
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