Enum Class Snippet.Kind
- All Implemented Interfaces:
Serializable,Comparable<Snippet.Kind>,Constable
- Enclosing class:
- Snippet
public static enum Snippet.Kind extends Enum<Snippet.Kind>
Describes the general kind of snippet. The
Kind is an immutable property of a Snippet. It is accessed with Snippet.kind(). The Kind can be used to determine which subclass of Snippet it is. For example, eval("int three() { return 3; }") will return a snippet creation event. The Kind of that Snippet will be METHOD, from which you know that the subclass of Snippet is MethodSnippet and it can be cast as such.
Nested Class Summary
Nested classes/interfaces declared in class java.lang.Enum
Enum.EnumDesc<E extends Enum<E>>
Enum Constant Summary
| Enum Constant | Description |
|---|---|
ERRONEOUS |
A syntactically incorrect input for which the specific kind could not be determined.
|
EXPRESSION |
An expression, with or without side-effects.
|
IMPORT |
An import declaration: import ...
|
METHOD |
A method declaration.
|
STATEMENT |
A statement.
|
TYPE_DECL |
A type declaration.
|
VAR |
One variable declaration.
|
Method Summary
| Modifier and Type | Method | Description |
|---|---|---|
boolean |
isPersistent() |
Indicates whether this Kind of Snippet is persistent.
|
static Snippet.Kind |
valueOf |
Returns the enum constant of this class with the specified name.
|
static Snippet.Kind[] |
values() |
Returns an array containing the constants of this enum class, in the order they are declared.
|
Enum Constant Details
IMPORT
public static final Snippet.Kind IMPORT
An import declaration:
import ... The snippet is an instance of ImportSnippet.
An import can be a single type import (Snippet.SubKind.SINGLE_TYPE_IMPORT_SUBKIND), a static single import (Snippet.SubKind.SINGLE_STATIC_IMPORT_SUBKIND), an on-demand type import (Snippet.SubKind.TYPE_IMPORT_ON_DEMAND_SUBKIND), or a static on-demand type import (Snippet.SubKind.SINGLE_STATIC_IMPORT_SUBKIND) -- use Snippet.subKind() to distinguish.
An import declaration is persistent.
- See Java Language Specification:
- 7.5 Import Declarations
TYPE_DECL
public static final Snippet.Kind TYPE_DECL
A type declaration. Which includes: NormalClassDeclaration, EnumDeclaration, NormalInterfaceDeclaration, and AnnotationTypeDeclaration. The snippet is an instance of
TypeDeclSnippet.
A type declaration may be an interface Snippet.SubKind.INTERFACE_SUBKIND, classes Snippet.SubKind.CLASS_SUBKIND, enums, and annotation interfaces -- see Snippet.SubKind to differentiate.
A type declaration is persistent.
- See Java Language Specification:
- 7.6 Top Level Type Declarations
METHOD
public static final Snippet.Kind METHOD
A method declaration. The snippet is an instance of
MethodSnippet.
A method declaration is persistent.
- See Java Language Specification:
- 8.4 Method Declarations
VAR
public static final Snippet.Kind VAR
One variable declaration. Corresponding to one VariableDeclarator. The snippet is an instance of
VarSnippet.
The variable may be with or without initializer, or be a temporary variable representing an expression -- see Snippet.SubKindto differentiate.
A variable declaration is persistent.
- See Java Language Specification:
- 8.3 Field Declarations
EXPRESSION
public static final Snippet.Kind EXPRESSION
An expression, with or without side-effects. The snippet is an instance of
ExpressionSnippet.
The expression is currently either a simple named reference to a variable (Snippet.SubKind.VAR_VALUE_SUBKIND) or an assignment (both of which have natural referencing names) -- see Snippet.SubKind to differentiate. All other expression forms (operators, method calls, ...) generate a scratch variable and so are instead of the VAR Kind.
- See Java Language Specification:
- 15 Expressions
STATEMENT
public static final Snippet.Kind STATEMENT
A statement. The snippet is an instance of
StatementSnippet.
- See Java Language Specification:
- 14.5 Statements
ERRONEOUS
public static final Snippet.Kind ERRONEOUS
A syntactically incorrect input for which the specific kind could not be determined. The snippet is an instance of
ErroneousSnippet.
Method Details
values
public static Snippet.Kind[] values()
Returns an array containing the constants of this enum class, in the order they are declared.
- Returns:
- an array containing the constants of this enum class, in the order they are declared
valueOf
public static Snippet.Kind valueOf(String name)
Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)
- Parameters:
name- the name of the enum constant to be returned.- Returns:
- the enum constant with the specified name
- Throws:
IllegalArgumentException- if this enum class has no constant with the specified nameNullPointerException- if the argument is null
isPersistent
public boolean isPersistent()
Indicates whether this
Kind of Snippet is persistent. Only declarations are persistent because they influence future Snippets.
Note that though the Kind of a Snippet may be persistent, that does not mean that the Snippet will persist; For example it may be invalid or have been dropped. See: Snippet.Status.isDefined().
- Returns:
trueif thisKindofSnippetis visible to subsequent evaluations; otherwisefalse
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https://docs.oracle.com/en/java/javase/17/docs/api/jdk.jshell/jdk/jshell/Snippet.Kind.html