com.whitestein.lsps.lang.ast

Class IfnullExpression

java.lang.Object

com.whitestein.lsps.lang.ast.ASTRangeImpl

com.whitestein.lsps.lang.ast.ASTNodeImpl

com.whitestein.lsps.lang.ast.Expression

com.whitestein.lsps.lang.ast.IfnullExpression

All Implemented Interfaces:

ASTInfo, ASTNode, ASTRange

public final class IfnullExpression
extends Expression

Author:

mvo

Field Summary

Fields inherited from interface com.whitestein.lsps.lang.ast.ASTInfo

EMPTY

Constructor Summary

Constructors

Constructor and Description
IfnullExpression(ASTInfo info, Expression expression, Expression altExpression, Type returnType) Constructs a new ifnull expression.

Method Summary

Modifier and Type	Method and Description
<T,E extends Throwable> T	accept(ExpressionVisitor<T,E> visitor) Accepts visitor.
protected Object	basicInterpret(Interpreter interpreter, InterpreterStackTrace stackTrace) Interpret expression.
Expression	getAltExpression() Returns the alternative expression.
Expression	getExpression() Returns the main expression.
List<Expression>	getResultExpressions() Returns the result expression.

Methods inherited from class com.whitestein.lsps.lang.ast.Expression

createANTLRParser, doInterpret, evalCondition, evaluateToExpressions, executeCompiled, getCompiled, getDebugLine, getIdentifierAst, getParseTimeConstant, getPrimaryRange, getPropertySelectorRange, getRange, getResultExpression, getType, interpret, interpretInCurrentNamespace, isCreatingNonModuleContextObjects, isParseTimeConstant, requiresNewNamespace, setCompiled, showInFullText, showInSurroundingText, showInText, toExpressions

Methods inherited from class com.whitestein.lsps.lang.ast.ASTNodeImpl

getFullText, getLine, getNodeText, getText, toString

Methods inherited from class com.whitestein.lsps.lang.ast.ASTRangeImpl

contains, getBeginIndex, getEndIndex, getLength

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.whitestein.lsps.lang.ast.ASTNode

getFullText, getLine, getNodeText, getText

Methods inherited from interface com.whitestein.lsps.lang.ast.ASTRange

contains, getBeginIndex, getEndIndex, getLength

Constructor Detail

IfnullExpression

public IfnullExpression(ASTInfo info,
                        Expression expression,
                        Expression altExpression,
                        Type returnType)

Constructs a new ifnull expression.

Parameters:

info -

expression -

altExpression -

returnType -

Method Detail

getExpression

public Expression getExpression()

Returns the main expression.

Returns:

the main expression

getAltExpression

public Expression getAltExpression()

Returns the alternative expression.

Returns:

the alternative expression

accept

public <T,E extends Throwable> T accept(ExpressionVisitor<T,E> visitor)
                                 throws E extends Throwable

Description copied from class: Expression

Accepts visitor.

Specified by:

accept in class Expression

Returns:

the result of visit

Throws:

E

E extends Throwable

basicInterpret

protected Object basicInterpret(Interpreter interpreter,
                                InterpreterStackTrace stackTrace)
                         throws ErrorException

Description copied from class: Expression

Interpret expression.

Specified by:

basicInterpret in class Expression

Returns:

result of interpretation

Throws:

ErrorException

getResultExpressions

public List<Expression> getResultExpressions()

Description copied from class: Expression

Returns the result expression. E.g. for a chained expression, it returns its last child (applied recursively).

Overrides:

getResultExpressions in class Expression

Returns:

the result expressions