org.peaseplate.internal.designator
Class IfDesignator

java.lang.Object
  org.peaseplate.internal.designator.IfDesignator

All Implemented Interfaces:

Designator

public class IfDesignator
extends java.lang.Object
implements Designator

The designator for the "if" keyword. Expects the code chunk to contain a expression that can be evaluated to either true or false. This designator starts a block that may be followed by an "else" or "else-if" block.

Author:

Manfred HANTSCHEL

Field Summary

static java.lang.String

NAME

Constructor Summary

IfDesignator()

Method Summary

Chunk	compile(TemplateEngine engine, CompileContext context, Token token)
java.lang.String	getKeyword() The keyword of this designator is "if".
boolean	isBlockExpansion()
boolean	isBlockHead()
boolean	isBlockTail()
boolean	isEmpty() The designator is not empty.
boolean	isExpandableBlock()
boolean	isVisible() Returns true if the chunk generated by the designator is visible, false otherwise.

Methods inherited from class java.lang.Object

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

Field Detail

NAME

public static final java.lang.String NAME

See Also:

Constant Field Values

Constructor Detail

IfDesignator

public IfDesignator()

Method Detail

getKeyword

public java.lang.String getKeyword()

The keyword of this designator is "if".

Specified by:

getKeyword in interface Designator

Returns:

the keyword of the designator, not null

See Also:

Designator.getKeyword()

isEmpty

public boolean isEmpty()

The designator is not empty.

Specified by:

isEmpty in interface Designator

Returns:

true if empty, false otherwise

See Also:

Designator.isEmpty()

isBlockHead

public boolean isBlockHead()

Specified by:

isBlockHead in interface Designator

See Also:

Designator.isBlockHead()

isBlockTail

public boolean isBlockTail()

Specified by:

isBlockTail in interface Designator

See Also:

Designator.isBlockTail()

isExpandableBlock

public boolean isExpandableBlock()

Specified by:

isExpandableBlock in interface Designator

See Also:

Designator.isExpandableBlock()

isBlockExpansion

public boolean isBlockExpansion()

Specified by:

isBlockExpansion in interface Designator

See Also:

Designator.isBlockExpansion()

isVisible

public boolean isVisible()

Description copied from interface: Designator

Returns true if the chunk generated by the designator is visible, false otherwise. If the chunk can generate visible output, this method returns true. A content chunk with only white spaces in it, is by definition not visible. This method cannot compute this, since is does not get the source. Handle ContentDesignator separately.

Specified by:

isVisible in interface Designator

Returns:

true if visible, false otherwise

See Also:

Designator.isVisible()

compile

public Chunk compile(TemplateEngine engine,
                     CompileContext context,
                     Token token)
              throws TemplateException

Specified by:

compile in interface Designator

Throws:

TemplateException

See Also:

Designator.compile(org.peaseplate.TemplateEngine, org.peaseplate.internal.model.CompileContext, org.peaseplate.internal.parser.Token)