Package com.tonic.analysis.source.ast.stmt

Class IfStmt

java.lang.Object

com.tonic.analysis.source.ast.stmt.IfStmt

All Implemented Interfaces:

ASTNode, Statement

public final class IfStmt
extends Object
implements Statement

An if statement with an optional else branch.

Constructor Summary

Constructors

Constructor	Description
IfStmt(Expression condition, Statement thenBranch)	Creates an if statement without an else branch.
IfStmt(Expression condition, Statement thenBranch, Statement elseBranch)	Creates an if statement with an unknown location.
IfStmt(Expression condition, Statement thenBranch, Statement elseBranch, SourceLocation location)	Creates an if statement and parents its children to it.

Method Summary

Modifier and Type	Method	Description
<T> T	accept(SourceVisitor<T> visitor)	Accepts a visitor for this node.
List<ASTNode>	getChildren()	Lists the direct children a node holds, in source order.
Expression	getCondition()
Statement	getElseBranch()
SourceLocation	getLocation()	Gets the source location of this node.
ASTNode	getParent()	Gets the parent node in the AST tree.
Statement	getThenBranch()
boolean	hasElse()
boolean	isElseIf()
void	setCondition(Expression condition)	Replaces the branch condition, reparenting old and new nodes.
void	setElseBranch(Statement elseBranch)	Replaces the else branch, reparenting old and new nodes.
void	setLocation(SourceLocation location)	Sets this statement's source location.
void	setParent(ASTNode parent)	Sets the enclosing AST node.
void	setThenBranch(Statement thenBranch)	Replaces the then branch, reparenting old and new nodes.
String	toString()
IfStmt	withCondition(Expression condition)	Replaces the branch condition, reparenting old and new nodes.
IfStmt	withElseBranch(Statement elseBranch)	Replaces the else branch, reparenting old and new nodes.
IfStmt	withThenBranch(Statement thenBranch)	Replaces the then branch, reparenting old and new nodes.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.tonic.analysis.source.ast.ASTNode

deepClone, findAll, findAll, findAncestor, findFirst, findFirst, getRoot, isDescendantOf, remove, replaceWith, stream, stream, walk

Methods inherited from interface com.tonic.analysis.source.ast.stmt.Statement

getLabel

Constructor Detail

IfStmt

public IfStmt(Expression condition,
              Statement thenBranch,
              Statement elseBranch,
              SourceLocation location)

Creates an if statement and parents its children to it.

Parameters:

condition - the branch condition

thenBranch - statement executed when the condition holds

elseBranch - statement executed otherwise, or null for none

location - source location, or null for unknown

Throws:

NullPointerException - if condition or thenBranch is null

IfStmt

public IfStmt(Expression condition,
              Statement thenBranch,
              Statement elseBranch)

Creates an if statement with an unknown location.

Parameters:

condition - the branch condition

thenBranch - statement executed when the condition holds

elseBranch - statement executed otherwise, or null for none

Throws:

NullPointerException - if condition or thenBranch is null

IfStmt

public IfStmt(Expression condition,
              Statement thenBranch)

Creates an if statement without an else branch.

Parameters:

condition - the branch condition

thenBranch - statement executed when the condition holds

Throws:

NullPointerException - if condition or thenBranch is null

Method Detail

getCondition

public Expression getCondition()

Returns:

the condition

setCondition

public void setCondition(Expression condition)

Replaces the branch condition, reparenting old and new nodes.

Parameters:

condition - the new condition

getThenBranch

public Statement getThenBranch()

Returns:

the then branch

setThenBranch

public void setThenBranch(Statement thenBranch)

Replaces the then branch, reparenting old and new nodes.

Parameters:

thenBranch - the new then branch

getElseBranch

public Statement getElseBranch()

Returns:

the else branch

setElseBranch

public void setElseBranch(Statement elseBranch)

Replaces the else branch, reparenting old and new nodes.

Parameters:

elseBranch - the new else branch, or null to remove it

getLocation

public SourceLocation getLocation()

Description copied from interface: ASTNode

Gets the source location of this node.

Specified by:

getLocation in interface ASTNode

Returns:

the location

getParent

public ASTNode getParent()

Description copied from interface: ASTNode

Gets the parent node in the AST tree.

Specified by:

getParent in interface ASTNode

Returns:

the parent

setParent

public void setParent(ASTNode parent)

Sets the enclosing AST node.

Specified by:

setParent in interface ASTNode

Parameters:

parent - the new parent node

hasElse

public boolean hasElse()

Returns:

true if this if statement has an else branch

isElseIf

public boolean isElseIf()

Returns:

true if the else branch is itself an if statement

withCondition

public IfStmt withCondition(Expression condition)

Replaces the branch condition, reparenting old and new nodes.

Parameters:

condition - the new condition

Returns:

this statement

withThenBranch

public IfStmt withThenBranch(Statement thenBranch)

Replaces the then branch, reparenting old and new nodes.

Parameters:

thenBranch - the new then branch

Returns:

this statement

withElseBranch

public IfStmt withElseBranch(Statement elseBranch)

Replaces the else branch, reparenting old and new nodes.

Parameters:

elseBranch - the new else branch, or null to remove it

Returns:

this statement

getChildren

public List<ASTNode> getChildren()

Description copied from interface: ASTNode

Lists the direct children a node holds, in source order.

Specified by:

getChildren in interface ASTNode

Returns:

the direct children, empty for a leaf

accept

public <T> T accept(SourceVisitor<T> visitor)

Description copied from interface: ASTNode

Accepts a visitor for this node.

Specified by:

accept in interface ASTNode

Type Parameters:

T - the return type of the visitor

Parameters:

visitor - the visitor to accept

Returns:

the result from the visitor

toString

public String toString()

Overrides:

toString in class Object

setLocation

public void setLocation(SourceLocation location)

Description copied from interface: Statement

Sets this statement's source location.

Specified by:

setLocation in interface Statement

Parameters:

location - the provenance to stamp, or null for SourceLocation.UNKNOWN