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org.eclipse.jdt.core.dom
Class IfStatement
java.lang.Object
org.eclipse.jdt.core.dom.ASTNode
org.eclipse.jdt.core.dom.Statement
org.eclipse.jdt.core.dom.IfStatement
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public class IfStatement
- extends
Statement
If statement AST node type.
IfStatement:
if ( Expression ) Statement [ else Statement]
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Since:
- 2.0
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Restriction:
- This class is not intended to be instantiated by clients.
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Fields inherited from class org.eclipse.jdt.core.dom.
ASTNode
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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,
DO_STATEMENT,
EMPTY_STATEMENT,
ENHANCED_FOR_STATEMENT,
ENUM_CONSTANT_DECLARATION,
ENUM_DECLARATION,
EXPRESSION_STATEMENT,
FIELD_ACCESS,
FIELD_DECLARATION,
FOR_STATEMENT,
IF_STATEMENT,
IMPORT_DECLARATION,
INFIX_EXPRESSION,
INITIALIZER,
INSTANCEOF_EXPRESSION,
JAVADOC,
LABELED_STATEMENT,
LINE_COMMENT,
MALFORMED,
MARKER_ANNOTATION,
MEMBER_REF,
MEMBER_VALUE_PAIR,
METHOD_DECLARATION,
METHOD_INVOCATION,
METHOD_REF,
METHOD_REF_PARAMETER,
MODIFIER,
NORMAL_ANNOTATION,
NULL_LITERAL,
NUMBER_LITERAL,
ORIGINAL,
PACKAGE_DECLARATION,
PARAMETERIZED_TYPE,
PARENTHESIZED_EXPRESSION,
POSTFIX_EXPRESSION,
PREFIX_EXPRESSION,
PRIMITIVE_TYPE,
PROTECT,
QUALIFIED_NAME,
QUALIFIED_TYPE,
RECOVERED,
RETURN_STATEMENT,
SIMPLE_NAME,
SIMPLE_TYPE,
SINGLE_MEMBER_ANNOTATION,
SINGLE_VARIABLE_DECLARATION,
STRING_LITERAL,
SUPER_CONSTRUCTOR_INVOCATION,
SUPER_FIELD_ACCESS,
SUPER_METHOD_INVOCATION,
SWITCH_CASE,
SWITCH_STATEMENT,
SYNCHRONIZED_STATEMENT,
TAG_ELEMENT,
TEXT_ELEMENT,
THIS_EXPRESSION,
THROW_STATEMENT,
TRY_STATEMENT,
TYPE_DECLARATION,
TYPE_DECLARATION_STATEMENT,
TYPE_LITERAL,
TYPE_PARAMETER,
VARIABLE_DECLARATION_EXPRESSION,
VARIABLE_DECLARATION_FRAGMENT,
VARIABLE_DECLARATION_STATEMENT,
WHILE_STATEMENT,
WILDCARD_TYPE
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Methods inherited from class org.eclipse.jdt.core.dom.
ASTNode
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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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EXPRESSION_PROPERTY
public static final
ChildPropertyDescriptor EXPRESSION_PROPERTY
- The "expression" structural property of this node type.
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Since:
- 3.0
THEN_STATEMENT_PROPERTY
public static final
ChildPropertyDescriptor THEN_STATEMENT_PROPERTY
- The "thenStatement" structural property of this node type.
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Since:
- 3.0
ELSE_STATEMENT_PROPERTY
public static final
ChildPropertyDescriptor ELSE_STATEMENT_PROPERTY
- The "elseStatement" structural property of this node type.
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Since:
- 3.0
propertyDescriptors
public static
List propertyDescriptors(int apiLevel)
- Returns a list of structural property descriptors for this node type.
Clients must not modify the result.
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Parameters:
-
apiLevel - the API level; one of the
AST.JLS* constants
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Returns:
- a list of property descriptors (element type:
StructuralPropertyDescriptor) -
Since:
- 3.0
getExpression
public
Expression getExpression()
- Returns the expression of this if statement.
-
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Returns:
- the expression node
setExpression
public void setExpression(
Expression expression)
- Sets the condition of this if statement.
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Parameters:
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expression - the expression node
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Throws:
-
IllegalArgumentException
- if:
- the node belongs to a different AST
- the node already has a parent
- a cycle in would be created
getThenStatement
public
Statement getThenStatement()
- Returns the "then" part of this if statement.
-
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Returns:
- the "then" statement node
setThenStatement
public void setThenStatement(
Statement statement)
- Sets the "then" part of this if statement.
Special note: The Java language does not allow a local variable declaration
to appear as the "then" part of an if statement (they may only appear within a
block). However, the AST will allow a VariableDeclarationStatement
as the thenStatement of a IfStatement. To get something that will
compile, be sure to embed the VariableDeclarationStatement
inside a Block.
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Parameters:
-
statement - the "then" statement node
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Throws:
-
IllegalArgumentException
- if:
- the node belongs to a different AST
- the node already has a parent
- a cycle in would be created
getElseStatement
public
Statement getElseStatement()
- Returns the "else" part of this if statement, or
null if
this if statement has no "else" part.
Note that there is a subtle difference between having no else
statement and having an empty statement ("{}") or null statement (";").
-
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Returns:
- the "else" statement node, or
null if none
setElseStatement
public void setElseStatement(
Statement statement)
- Sets or clears the "else" part of this if statement.
Note that there is a subtle difference between having no else part
(as in "if(true){}") and having an empty block (as in
"if(true){}else{}") or null statement (as in "if(true){}else;").
Special note: The Java language does not allow a local variable declaration
to appear as the "else" part of an if statement (they may only appear within a
block). However, the AST will allow a VariableDeclarationStatement
as the elseStatement of a IfStatement. To get something that will
compile, be sure to embed the VariableDeclarationStatement
inside a Block.
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Parameters:
-
statement - the "else" statement node, or null if
there is none
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Throws:
-
IllegalArgumentException
- if:
- the node belongs to a different AST
- the node already has a parent
- a cycle in would be created
Copyright (c) IBM Corp. and others 2000, 2008. All Rights Reserved.
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