Class ArrayType
- java.lang.Object
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- org.eclipse.jdt.core.dom.ASTNode
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- org.eclipse.jdt.core.dom.Type
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- org.eclipse.jdt.core.dom.ArrayType
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public class ArrayType extends Type
Type node for an array type.In JLS8 and later, array types are represented by a base element type (which cannot be an array type) and a list of dimensions, each of which may have a list of annotations.
ArrayType: Type Dimension { Dimension }
In JLS4 and before, array types were expressed in a recursive manner, one dimension at a time:ArrayType: Type [ ]
This structure became untenable with the advent of type-use annotations, because in the language model, the base type binds with array dimensions from right to left, whereas a recursive structure binds from left to right (inside out).Example:
int @A[] @B[] @C[]
is an@A
-array of
int @B[] @C[]
, but such a component type is not representable by nestedArrayType
s with contiguous source ranges.- Since:
- 2.0
- Restriction:
- This class is not intended to be instantiated by clients.
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Field Summary
Fields Modifier and Type Field Description static ChildPropertyDescriptor
COMPONENT_TYPE_PROPERTY
Deprecated.In the JLS8 API, this property is replaced byELEMENT_TYPE_PROPERTY
andDIMENSIONS_PROPERTY
.static ChildListPropertyDescriptor
DIMENSIONS_PROPERTY
The "dimensions" structural property of this node type (element type:Dimension
) (added in JLS8 API).static ChildPropertyDescriptor
ELEMENT_TYPE_PROPERTY
The "elementType" structural property of this node type (child type:Type
) (added in JLS8 API).-
Fields inherited from class org.eclipse.jdt.core.dom.ASTNode
ANNOTATION_TYPE_DECLARATION, ANNOTATION_TYPE_MEMBER_DECLARATION, ANONYMOUS_CLASS_DECLARATION, ARRAY_ACCESS, ARRAY_CREATION, ARRAY_INITIALIZER, ARRAY_TYPE, ASSERT_STATEMENT, ASSIGNMENT, BLOCK, BLOCK_COMMENT, BOOLEAN_LITERAL, BREAK_STATEMENT, CAST_EXPRESSION, CATCH_CLAUSE, CHARACTER_LITERAL, CLASS_INSTANCE_CREATION, COMPILATION_UNIT, CONDITIONAL_EXPRESSION, CONSTRUCTOR_INVOCATION, CONTINUE_STATEMENT, CREATION_REFERENCE, DIMENSION, DO_STATEMENT, EMPTY_STATEMENT, ENHANCED_FOR_STATEMENT, ENUM_CONSTANT_DECLARATION, ENUM_DECLARATION, EXPORTS_DIRECTIVE, EXPRESSION_METHOD_REFERENCE, EXPRESSION_STATEMENT, FIELD_ACCESS, FIELD_DECLARATION, FOR_STATEMENT, IF_STATEMENT, IMPORT_DECLARATION, INFIX_EXPRESSION, INITIALIZER, INSTANCEOF_EXPRESSION, INTERSECTION_TYPE, JAVADOC, LABELED_STATEMENT, LAMBDA_EXPRESSION, LINE_COMMENT, MALFORMED, MARKER_ANNOTATION, MEMBER_REF, MEMBER_VALUE_PAIR, METHOD_DECLARATION, METHOD_INVOCATION, METHOD_REF, METHOD_REF_PARAMETER, MODIFIER, MODULE_DECLARATION, MODULE_MODIFIER, NAME_QUALIFIED_TYPE, NORMAL_ANNOTATION, NULL_LITERAL, NUMBER_LITERAL, OPENS_DIRECTIVE, ORIGINAL, PACKAGE_DECLARATION, PARAMETERIZED_TYPE, PARENTHESIZED_EXPRESSION, POSTFIX_EXPRESSION, PREFIX_EXPRESSION, PRIMITIVE_TYPE, PROTECT, PROVIDES_DIRECTIVE, QUALIFIED_NAME, QUALIFIED_TYPE, RECORD_DECLARATION, RECOVERED, REQUIRES_DIRECTIVE, RETURN_STATEMENT, SIMPLE_NAME, SIMPLE_TYPE, SINGLE_MEMBER_ANNOTATION, SINGLE_VARIABLE_DECLARATION, STRING_LITERAL, SUPER_CONSTRUCTOR_INVOCATION, SUPER_FIELD_ACCESS, SUPER_METHOD_INVOCATION, SUPER_METHOD_REFERENCE, SWITCH_CASE, SWITCH_EXPRESSION, SWITCH_STATEMENT, SYNCHRONIZED_STATEMENT, TAG_ELEMENT, TEXT_BLOCK, TEXT_ELEMENT, THIS_EXPRESSION, THROW_STATEMENT, TRY_STATEMENT, TYPE_DECLARATION, TYPE_DECLARATION_STATEMENT, TYPE_LITERAL, TYPE_METHOD_REFERENCE, TYPE_PARAMETER, UNION_TYPE, USES_DIRECTIVE, VARIABLE_DECLARATION_EXPRESSION, VARIABLE_DECLARATION_FRAGMENT, VARIABLE_DECLARATION_STATEMENT, WHILE_STATEMENT, WILDCARD_TYPE, YIELD_STATEMENT
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods Modifier and Type Method Description List
dimensions()
Returns the live ordered list of dimensions with optional annotations (added in JLS8 API).Type
getComponentType()
Deprecated.In the JLS8 API, the recursive structure is not valid.int
getDimensions()
Returns the number of dimensions in this array type.Type
getElementType()
Returns the element type of this array type.static List
propertyDescriptors(int apiLevel)
Returns a list of structural property descriptors for this node type.void
setComponentType(Type componentType)
Deprecated.In the JLS8 API, the recursive structure is not valid.void
setElementType(Type type)
Sets the element type of the array.-
Methods inherited from class org.eclipse.jdt.core.dom.Type
isAnnotatable, isArrayType, isIntersectionType, isNameQualifiedType, isParameterizedType, isPrimitiveType, isQualifiedType, isSimpleType, isUnionType, isVar, isWildcardType, resolveBinding
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Methods inherited from class org.eclipse.jdt.core.dom.ASTNode
accept, copySubtree, copySubtrees, delete, equals, getAST, getFlags, getLength, getLocationInParent, getNodeType, getParent, getProperty, getRoot, getStartPosition, getStructuralProperty, hashCode, nodeClassForType, properties, setFlags, setProperty, setSourceRange, setStructuralProperty, structuralPropertiesForType, subtreeBytes, subtreeMatch, toString
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Field Detail
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COMPONENT_TYPE_PROPERTY
public static final ChildPropertyDescriptor COMPONENT_TYPE_PROPERTY
Deprecated.In the JLS8 API, this property is replaced byELEMENT_TYPE_PROPERTY
andDIMENSIONS_PROPERTY
.The "componentType" structural property of this node type (child type:Type
).- Since:
- 3.0
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ELEMENT_TYPE_PROPERTY
public static final ChildPropertyDescriptor ELEMENT_TYPE_PROPERTY
The "elementType" structural property of this node type (child type:Type
) (added in JLS8 API). Cannot be an array type.- Since:
- 3.10
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DIMENSIONS_PROPERTY
public static final ChildListPropertyDescriptor DIMENSIONS_PROPERTY
The "dimensions" structural property of this node type (element type:Dimension
) (added in JLS8 API).- Since:
- 3.10
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Method Detail
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propertyDescriptors
public static List propertyDescriptors(int apiLevel)
Returns a list of structural property descriptors for this node type. Clients must not modify the result.- Parameters:
apiLevel
- the API level; one of theAST.JLS*
constants- Returns:
- a list of property descriptors (element type:
StructuralPropertyDescriptor
) - Since:
- 3.0
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getComponentType
public Type getComponentType()
Deprecated.In the JLS8 API, the recursive structure is not valid.Returns the component type of this array type. The component type may be another array type.- Returns:
- the component type node
- Throws:
UnsupportedOperationException
- if this operation is used in an AST later than JLS4- See Also:
dimensions()
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setComponentType
public void setComponentType(Type componentType)
Deprecated.In the JLS8 API, the recursive structure is not valid.Sets the component type of this array type. The component type may be another array type.- Parameters:
componentType
- the component type- Throws:
IllegalArgumentException
- if:- the node belongs to a different AST
- the node already has a parent
- a cycle in would be created
UnsupportedOperationException
- if this operation is used in an AST later than JLS4
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getElementType
public Type getElementType()
Returns the element type of this array type. The element type is never an array type.In JLS4 and earlier, this is a convenience method that descends a chain of nested array types until it reaches a non-array type.
- Returns:
- the element type node
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setElementType
public void setElementType(Type type)
Sets the element type of the array.- Parameters:
type
- the new type- Throws:
IllegalArgumentException
- if:- the node belongs to a different AST
- the node already has a parent
- the node is an array type
UnsupportedOperationException
- if this operation is used below JLS8- Since:
- 3.10
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getDimensions
public int getDimensions()
Returns the number of dimensions in this array type.In JLS8 and later, this is a convenience method that returns
dimensions().size()
.In JLS4 and earlier, this is a convenience method that descends a chain of nested array types until it reaches a non-array type.
- Returns:
- the number of dimensions (always positive)
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dimensions
public List dimensions()
Returns the live ordered list of dimensions with optional annotations (added in JLS8 API).For the array type to be plausible, the list should contain at least one element.
- Returns:
- the live list of dimensions with optional annotations (element type:
Dimension
) - Throws:
UnsupportedOperationException
- if this operation is used below JLS8- Since:
- 3.10
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