Package net.ssehub.easy.instantiation.core.model.expressions

Class ExpressionWriter

java.lang.Object

net.ssehub.easy.instantiation.core.model.expressions.AbstractWriter

net.ssehub.easy.instantiation.core.model.expressions.ExpressionWriter

All Implemented Interfaces:

IExpressionVisitor

Direct Known Subclasses:

WriterVisitor

public class ExpressionWriter
extends AbstractWriter
implements IExpressionVisitor

Implements a writer for expressions using the default VIL expression syntax.

Author:

Holger Eichelberger

Field Summary

Fields

Modifier and Type	Field	Description
private java.util.Stack<CompositeExpression>	compositeExpressions
private boolean	isInContent
private boolean	isInExpression
private static boolean	oclCompliance	Detect, warn, report about and write to avoid OCL compliance problems.

Constructor Summary

Constructors

Constructor	Description
ExpressionWriter(java.io.Writer out)	Creates a build language writer.

Method Summary

Modifier and Type	Method	Description
static boolean	considerOclCompliance()	Returns whether OCL compliance shall be considered.
protected boolean	isInComposite()	Check if Expression is in CompositeExpression.
protected boolean	isInContent()	Check if Expression is in content.
protected void	printArgumentList(IArgumentProvider provider, int start)	Prints an argument list.
protected void	printArguments(IArgumentProvider provider, int start)	Prints arguments (see also printArgumentList(IArgumentProvider, int)).
private void	printCallAccess(CallExpression call)	Prints the call access operator.
protected void	printContentExpressions(IExpressionIterator iter)	Prints a content expressions given by an expression iterator.
private void	printIteratorDeclarators(CallExpression call)	Prints the iterator declarators if appropriate.
private void	printName(CallExpression call)	Prints the name of a call expression.
protected void	printType(TypeDescriptor<?> type)	Prints the given type.
protected boolean	quoteExpression(Expression expression)	Returns if visiting expression in printContentExpressions(IExpressionIterator) shall lead to quote constant expressions or unquoted constant expressionsisInExpression.
protected void	setInContent(boolean isInContent)	Set that expression is in content.
static void	setOclCompliance(boolean compliance)	Changes the OCL compliance setting.
java.lang.Object	visitCallExpression(CallExpression call)	Visits a call node.
java.lang.Object	visitCompositeExpression(CompositeExpression ex)	Visits a composite expression.
java.lang.Object	visitConstantExpression(ConstantExpression cst)	Visits a constant node.
java.lang.Object	visitContainerInitializerExpression(ContainerInitializerExpression ex)	Visits a container initializer expression.
java.lang.Object	visitExpression(Expression ex)	Visits an unspecified expression (in case of specialized nodes).
java.lang.Object	visitExpressionEvaluator(ExpressionEvaluator ex)	Visits an expression evaluator.
java.lang.Object	visitFieldAccessExpression(FieldAccessExpression ex)	Visits a field access expression.
java.lang.Object	visitMultiAndExpression(MultiAndExpression ex)	Visits a multi-and expression.
java.lang.Object	visitParenthesisExpression(ParenthesisExpression par)	Visits a parenthesis node.
java.lang.Object	visitResolvableOperationCallExpression(ResolvableOperationCallExpression ex)	Visits resolvable operation call expression (function pointer call).
java.lang.Object	visitResolvableOperationExpression(ResolvableOperationExpression ex)	Visits resolvable operation expression (function pointer resolution).
java.lang.Object	visitStringExpression(StringExpression ex)	Visits a string expression.
java.lang.Object	visitValueAssignmentExpression(ValueAssignmentExpression ex)	Visits a value assignment expression.
java.lang.Object	visitVariableExpression(VariableExpression cst)	Visits a constant node.
java.lang.Object	visitVarModelIdentifierExpression(VarModelIdentifierExpression identifier)	Visits a variability model identifier.
java.lang.Object	visitVilTypeExpression(VilTypeExpression typeExpression)	Visits a VIL type expression.

Methods inherited from class net.ssehub.easy.instantiation.core.model.expressions.AbstractWriter

decreaseIndentation, flush, getOut, increaseIndentation, print, print, print, print, printIndentation, printJavaEscaped, println, println, println, println, println, printWhitespace, setIndentation

Methods inherited from class java.lang.Object

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

Field Detail

oclCompliance

private static boolean oclCompliance

Detect, warn, report about and write to avoid OCL compliance problems.

compositeExpressions

private transient java.util.Stack<CompositeExpression> compositeExpressions

isInContent

private transient boolean isInContent

isInExpression

private transient boolean isInExpression

Constructor Detail

ExpressionWriter

public ExpressionWriter(java.io.Writer out)

Creates a build language writer.

Parameters:

out - the writer to write the elements to

Method Detail

setOclCompliance

public static void setOclCompliance(boolean compliance)

Changes the OCL compliance setting. Similar to IVML, but we separate this in case that the UI shall do different settings for IVML and VIL.

Parameters:

compliance - operate with OCL compliance (true), allow both IVML + OCL (false

considerOclCompliance

public static boolean considerOclCompliance()

Returns whether OCL compliance shall be considered. Similar to IVML, but we separate this in case that the UI shall do different settings for IVML and VIL.

Returns:

true for OCL compliance, false else

visitParenthesisExpression

public java.lang.Object visitParenthesisExpression(ParenthesisExpression par)
                                            throws VilException

Description copied from interface: IExpressionVisitor

Visits a parenthesis node.

Specified by:

visitParenthesisExpression in interface IExpressionVisitor

Parameters:

par - the node

Returns:

the result of visiting this expression (may be null)

Throws:

VilException - in case that visiting fails (e.g., execution)

printName

private void printName(CallExpression call)

Prints the name of a call expression.

Parameters:

call - the call to print the name for

printType

protected void printType(TypeDescriptor<?> type)

Prints the given type.

Parameters:

type - the type to be printed

printIteratorDeclarators

private void printIteratorDeclarators(CallExpression call)
                               throws VilException

Prints the iterator declarators if appropriate.

Parameters:

call - the call expression to print the declarators for

Throws:

VilException - if visiting fails

visitCallExpression

public java.lang.Object visitCallExpression(CallExpression call)
                                     throws VilException

Description copied from interface: IExpressionVisitor

Visits a call node.

Specified by:

visitCallExpression in interface IExpressionVisitor

Parameters:

call - the node

Returns:

the result of visiting this expression (may be null)

Throws:

VilException - in case that visiting fails (e.g., execution)

printCallAccess

private void printCallAccess(CallExpression call)
                      throws VilException

Prints the call access operator.

Parameters:

call - the call to print

Throws:

VilException - in case of type resolution problems

printArguments

protected void printArguments(IArgumentProvider provider,
                              int start)
                       throws VilException

Prints arguments (see also printArgumentList(IArgumentProvider, int)).

Parameters:

provider - the argument provider

start - the start argument index (usually 0)

Throws:

VilException - in case that visiting fails

printArgumentList

protected void printArgumentList(IArgumentProvider provider,
                                 int start)
                          throws VilException

Prints an argument list.

Parameters:

provider - the argument provider

start - the start argument index (usually 0)

Throws:

VilException - in case that visiting fails

visitStringExpression

public java.lang.Object visitStringExpression(StringExpression ex)
                                       throws VilException

Description copied from interface: IExpressionVisitor

Visits a string expression.

Specified by:

visitStringExpression in interface IExpressionVisitor

Parameters:

ex - the expression

Returns:

the result of visiting the given statement (may be null)

Throws:

VilException - in case that visiting fails (e.g., execution)

visitConstantExpression

public java.lang.Object visitConstantExpression(ConstantExpression cst)
                                         throws VilException

Description copied from interface: IExpressionVisitor

Visits a constant node.

Specified by:

visitConstantExpression in interface IExpressionVisitor

Parameters:

cst - the node

Returns:

the result of visiting this expression (may be null)

Throws:

VilException - in case that visiting fails (e.g., execution)

visitVarModelIdentifierExpression

public java.lang.Object visitVarModelIdentifierExpression(VarModelIdentifierExpression identifier)
                                                   throws VilException

Description copied from interface: IExpressionVisitor

Visits a variability model identifier.

Specified by:

visitVarModelIdentifierExpression in interface IExpressionVisitor

Parameters:

identifier - the identifier

Returns:

the result of visiting this expression (may be null)

Throws:

VilException - in case that visiting fails (e.g., execution)

visitVilTypeExpression

public java.lang.Object visitVilTypeExpression(VilTypeExpression typeExpression)
                                        throws VilException

Description copied from interface: IExpressionVisitor

Visits a VIL type expression.

Specified by:

visitVilTypeExpression in interface IExpressionVisitor

Parameters:

typeExpression - the expression

Returns:

the result of visiting this expression (may be null)

Throws:

VilException - in case that visiting fails (e.g., execution)

visitExpression

public java.lang.Object visitExpression(Expression ex)
                                 throws VilException

Description copied from interface: IExpressionVisitor

Visits an unspecified expression (in case of specialized nodes).

Specified by:

visitExpression in interface IExpressionVisitor

Parameters:

ex - the node

Returns:

the result of visiting this expression (may be null)

Throws:

VilException - in case that visiting fails (e.g., execution)

visitExpressionEvaluator

public java.lang.Object visitExpressionEvaluator(ExpressionEvaluator ex)
                                          throws VilException

Description copied from interface: IExpressionVisitor

Visits an expression evaluator.

Specified by:

visitExpressionEvaluator in interface IExpressionVisitor

Parameters:

ex - the evaluator

Returns:

the result of visiting this expression (may be null)

Throws:

VilException - in case that visiting fails (e.g., execution)

visitVariableExpression

public java.lang.Object visitVariableExpression(VariableExpression cst)
                                         throws VilException

Description copied from interface: IExpressionVisitor

Visits a constant node.

Specified by:

visitVariableExpression in interface IExpressionVisitor

Parameters:

cst - the node

Returns:

the result of visiting the given statement (may be null)

Throws:

VilException - in case that visiting fails (e.g., execution)

visitFieldAccessExpression

public java.lang.Object visitFieldAccessExpression(FieldAccessExpression ex)
                                            throws VilException

Description copied from interface: IExpressionVisitor

Visits a field access expression.

Specified by:

visitFieldAccessExpression in interface IExpressionVisitor

Parameters:

ex - the expression

Returns:

the result of visiting the given statement (may be null)

Throws:

VilException - in case that visiting fails (e.g., execution)

visitValueAssignmentExpression

public java.lang.Object visitValueAssignmentExpression(ValueAssignmentExpression ex)
                                                throws VilException

Description copied from interface: IExpressionVisitor

Visits a value assignment expression.

Specified by:

visitValueAssignmentExpression in interface IExpressionVisitor

Parameters:

ex - the expression

Returns:

the result of visiting the given statement (may be null)

Throws:

VilException - in case that visiting fails (e.g., execution)

visitContainerInitializerExpression

public java.lang.Object visitContainerInitializerExpression(ContainerInitializerExpression ex)
                                                     throws VilException

Description copied from interface: IExpressionVisitor

Visits a container initializer expression.

Specified by:

visitContainerInitializerExpression in interface IExpressionVisitor

Parameters:

ex - the expression

Returns:

the result of visiting the given statement (may be null)

Throws:

VilException - in case that visiting fails (e.g., execution)

visitCompositeExpression

public java.lang.Object visitCompositeExpression(CompositeExpression ex)
                                          throws VilException

Description copied from interface: IExpressionVisitor

Visits a composite expression.

Specified by:

visitCompositeExpression in interface IExpressionVisitor

Parameters:

ex - the expression

Returns:

the result of visiting the given statement

Throws:

VilException - in case that visiting fails (e.g., execution)

printContentExpressions

protected void printContentExpressions(IExpressionIterator iter)
                                throws VilException

Prints a content expressions given by an expression iterator.

Parameters:

iter - the expression iterator

Throws:

VilException - if printing fails for some reason

quoteExpression

protected boolean quoteExpression(Expression expression)

Returns if visiting expression in printContentExpressions(IExpressionIterator) shall lead to quote constant expressions or unquoted constant expressionsisInExpression.

Parameters:

expression - the expression to visit

Returns:

true for quoting, false else

visitResolvableOperationExpression

public java.lang.Object visitResolvableOperationExpression(ResolvableOperationExpression ex)
                                                    throws VilException

Description copied from interface: IExpressionVisitor

Visits resolvable operation expression (function pointer resolution).

Specified by:

visitResolvableOperationExpression in interface IExpressionVisitor

Parameters:

ex - the expression

Returns:

the result of visiting the given statement (may be null)

Throws:

VilException - in case that visiting fails (e.g., execution)

visitResolvableOperationCallExpression

public java.lang.Object visitResolvableOperationCallExpression(ResolvableOperationCallExpression ex)
                                                        throws VilException

Description copied from interface: IExpressionVisitor

Visits resolvable operation call expression (function pointer call).

Specified by:

visitResolvableOperationCallExpression in interface IExpressionVisitor

Parameters:

ex - the expression

Returns:

the result of visiting the given statement (may be null)

Throws:

VilException - in case that visiting fails (e.g., execution)

visitMultiAndExpression

public java.lang.Object visitMultiAndExpression(MultiAndExpression ex)
                                         throws VilException

Description copied from interface: IExpressionVisitor

Visits a multi-and expression.

Specified by:

visitMultiAndExpression in interface IExpressionVisitor

Parameters:

ex - the expression

Returns:

the result of visiting the given statement (may be null)

Throws:

VilException - in case that visiting fails (e.g., execution)

isInComposite

protected boolean isInComposite()

Check if Expression is in CompositeExpression.

Returns:

boolean

isInContent

protected boolean isInContent()

Check if Expression is in content.

Returns:

boolean

setInContent

protected void setInContent(boolean isInContent)

Set that expression is in content.

Parameters:

isInContent - boolean