Package org.codehaus.groovy.ast.stmt

Class IfStatement

java.lang.Object

org.codehaus.groovy.ast.ASTNode

org.codehaus.groovy.ast.stmt.Statement

org.codehaus.groovy.ast.stmt.IfStatement

All Implemented Interfaces:

NodeMetaDataHandler

public class IfStatement
extends Statement

Represents an if (condition) { then-block } else { else-block } conditional statement in Groovy. The if statement evaluates a boolean BooleanExpression and executes one of two code paths: the if block if the condition is true, or the else block (if present) if the condition is false. The else block defaults to an empty statement if not explicitly provided.

See Also:

• Statement
• BooleanExpression
• BlockStatement
• EmptyStatement

Constructor Summary

Constructors

Constructor	Description
IfStatement(BooleanExpression booleanExpression, Statement ifBlock, Statement elseBlock)	Constructs an IfStatement with a condition and then/else code blocks.

Method Summary

Modifier and Type	Method	Description
BooleanExpression	getBooleanExpression()	Returns the BooleanExpression that is evaluated to determine which code path to execute.
Statement	getElseBlock()	Returns the Statement to execute when the condition is false.
Statement	getIfBlock()	Returns the Statement to execute when the condition is true.
String	getText()	Returns a human-readable text representation of this AST node.
void	setBooleanExpression(BooleanExpression booleanExpression)	Sets the BooleanExpression that is evaluated to determine control flow.
void	setElseBlock(Statement statement)	Sets the Statement to execute when the condition is false.
void	setIfBlock(Statement statement)	Sets the Statement to execute when the condition is true.
void	visit(GroovyCodeVisitor visitor)	Accepts a code visitor for AST traversal and transformation.

Methods inherited from class org.codehaus.groovy.ast.stmt.Statement

addStatementAnnotation, addStatementLabel, copyStatementLabels, getStatementAnnotations, getStatementLabel, getStatementLabels, isEmpty, setStatementLabel

Methods inherited from class org.codehaus.groovy.ast.ASTNode

copyNodeMetaData, getColumnNumber, getLastColumnNumber, getLastLineNumber, getLineNumber, getMetaDataMap, setColumnNumber, setLastColumnNumber, setLastLineNumber, setLineNumber, setMetaDataMap, setSourcePosition

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.codehaus.groovy.ast.NodeMetaDataHandler

copyNodeMetaData, getNodeMetaData, getNodeMetaData, getNodeMetaData, newMetaDataMap, putNodeMetaData, removeNodeMetaData, setNodeMetaData

Constructor Details

IfStatement

public IfStatement(BooleanExpression booleanExpression,
 Statement ifBlock,
 Statement elseBlock)

Constructs an IfStatement with a condition and then/else code blocks.

Parameters:

booleanExpression - the BooleanExpression to evaluate; must not be null

ifBlock - the Statement to execute if the condition is true; must not be null

elseBlock - the Statement to execute if the condition is false, or null for no else clause

Method Details

setBooleanExpression

public void setBooleanExpression(BooleanExpression booleanExpression)

Sets the BooleanExpression that is evaluated to determine control flow.

Parameters:

booleanExpression - the BooleanExpression to evaluate; must not be null

Throws:

NullPointerException - if booleanExpression is null

setIfBlock

public void setIfBlock(Statement statement)

Sets the Statement to execute when the condition is true.

Parameters:

statement - the then-block Statement; must not be null

Throws:

NullPointerException - if statement is null

setElseBlock

public void setElseBlock(Statement statement)

Sets the Statement to execute when the condition is false. If null is provided, the else block is replaced with an empty statement.

Parameters:

statement - the else-block Statement, or null for no else clause

visit

public void visit(GroovyCodeVisitor visitor)

Description copied from class: ASTNode

Accepts a code visitor for AST traversal and transformation. Subclasses must implement this method to support visitor pattern-based processing. The visitor pattern enables decoupling of AST structure from processing logic.

Overrides:

visit in class ASTNode

Parameters:

visitor - the GroovyCodeVisitor to process this node

getBooleanExpression

public BooleanExpression getBooleanExpression()

Returns the BooleanExpression that is evaluated to determine which code path to execute.

Returns:

the BooleanExpression representing the condition

getIfBlock

public Statement getIfBlock()

Returns the Statement to execute when the condition is true.

Returns:

the then-block Statement

getElseBlock

public Statement getElseBlock()

Returns the Statement to execute when the condition is false. Returns EmptyStatement.INSTANCE if no else clause was specified.

Returns:

the else-block Statement

getText

public String getText()

Description copied from class: ASTNode

Returns a human-readable text representation of this AST node. Used for debugging and error messages. Default implementation returns a message indicating the representation is not yet implemented for this node type.

Overrides:

getText in class ASTNode

Returns:

text representation of this node, or placeholder for unimplemented types