Module Simula

Package simula.compiler.syntaxClass.declaration

Class ConnectionBlock

java.lang.Object

simula.compiler.syntaxClass.SyntaxClass

simula.compiler.syntaxClass.declaration.Declaration

simula.compiler.syntaxClass.declaration.DeclarationScope

simula.compiler.syntaxClass.declaration.ConnectionBlock

All Implemented Interfaces:

Externalizable, Serializable

public final class ConnectionBlock
extends DeclarationScope
implements Externalizable

Connection Block.

A Connection Block is a Statement within a Connection Statement. It acts as a block, whether it takes the form of a block or not. It further acts as if enclosed by a second fictitious block, called a "connection block". During the execution of a connection block the object X is said to be "connected".

See Simula Standard 4.8 Connection statement.

Link to GitHub: Source File.

Author:

Øystein Myhre Andersen

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class simula.compiler.syntaxClass.declaration.Declaration

Declaration.Kind

Field Summary

Fields

Modifier and Type	Field	Description
ClassDeclaration	classDeclaration	The when class identifier
final VariableExpression	inspectedVariable	The inspected variable.
private Statement	statement	The Connection Statement.
private Declaration	whenClassDeclaration	When clause class Declaration.
private final String	whenClassIdentifier	When clause class identifier.

Fields inherited from class simula.compiler.syntaxClass.declaration.DeclarationScope

ctBlockLevel, currentRTBlockLevel, declarationList, hasLocalClasses, labelList, rtBlockLevel, sourceBlockLevel

Fields inherited from class simula.compiler.syntaxClass.declaration.Declaration

declarationKind, declaredIn, externalIdent, identifier, isProtected, type

Fields inherited from class simula.compiler.syntaxClass.SyntaxClass

lineNumber

Constructor Summary

Constructors

Constructor	Description
ConnectionBlock()	Create a new ConnectionBlock.
ConnectionBlock(VariableExpression inspectedVariable, String whenClassIdentifier)	Create a new ConnectionBlock.

Method Summary

Modifier and Type	Method	Description
void	doChecking()	Perform semantic checking.
void	doJavaCoding()	Output Java code.
void	end()	Connection block end.
Meaning	findMeaning(String identifier)	Find Meaning
Expression	getInspectedExpression()	Get inspected expression.
void	print(int indent)	Utility print method.
void	printTree(int indent)	Utility print syntax tree method.
void	readExternal(ObjectInput in)
void	setClassDeclaration(ClassDeclaration classDeclaration)	Set the Connected ClassDecleration.
void	setStatement(Statement statement)	Set the Connection Statement.
String	toJavaCode()	Generate Java code for this Syntax Class.
String	toString()
void	writeExternal(ObjectOutput out)

Methods inherited from class simula.compiler.syntaxClass.declaration.DeclarationScope

edCTX, edCTX, edJavaClassName, edScopeChain, findLabelMeaning, findProcedure, findVisibleAttributeMeaning, printDeclarationList, scopeID

Methods inherited from class simula.compiler.syntaxClass.declaration.Declaration

getJavaIdentifier, isCompatibleClasses, modifyIdentifier, parseDeclaration

Methods inherited from class simula.compiler.syntaxClass.SyntaxClass

ASSERT_SEMANTICS_CHECKED, doDeclarationCoding, edIndent, edTreeIndent, IS_SEMANTICS_CHECKED, SET_SEMANTICS_CHECKED

Methods inherited from class java.lang.Object

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

Field Details

statement

private Statement statement

The Connection Statement.

whenClassIdentifier

private final String whenClassIdentifier

When clause class identifier.

whenClassDeclaration

private Declaration whenClassDeclaration

When clause class Declaration. Set during checking.

inspectedVariable

public final VariableExpression inspectedVariable

The inspected variable.

classDeclaration

public ClassDeclaration classDeclaration

The when class identifier

Constructor Details

ConnectionBlock

public ConnectionBlock(VariableExpression inspectedVariable,
 String whenClassIdentifier)

Create a new ConnectionBlock.

Parameters:

inspectedVariable - the inspected variable

whenClassIdentifier - the when class identifier

ConnectionBlock

public ConnectionBlock()

Create a new ConnectionBlock.

Method Details

getInspectedExpression

public Expression getInspectedExpression()

Get inspected expression.

Returns:

inspected expression.

end

public void end()

Connection block end.

setClassDeclaration

public void setClassDeclaration(ClassDeclaration classDeclaration)

Set the Connected ClassDecleration.

Parameters:

classDeclaration - the Connected ClassDecleration.

setStatement

public void setStatement(Statement statement)

Set the Connection Statement.

Parameters:

statement - the Connection Statement

findMeaning

public Meaning findMeaning(String identifier)

Description copied from class: DeclarationScope

Find Meaning

Overrides:

findMeaning in class DeclarationScope

Parameters:

identifier - declared identifier

Returns:

the resulting Meaning

doChecking

public void doChecking()

Description copied from class: SyntaxClass

Perform semantic checking.

This must be redefined in every subclass.

Overrides:

doChecking in class SyntaxClass

doJavaCoding

public void doJavaCoding()

Description copied from class: SyntaxClass

Output Java code.

Overrides:

doJavaCoding in class SyntaxClass

toJavaCode

public String toJavaCode()

Description copied from class: SyntaxClass

Generate Java code for this Syntax Class.

Overrides:

toJavaCode in class SyntaxClass

Returns:

Java code

print

public void print(int indent)

Description copied from class: SyntaxClass

Utility print method.

Overrides:

print in class SyntaxClass

Parameters:

indent - number of spaces leading the line

printTree

public void printTree(int indent)

Description copied from class: SyntaxClass

Utility print syntax tree method.

Overrides:

printTree in class SyntaxClass

Parameters:

indent - number of spaces leading the lines

toString

public String toString()

Overrides:

toString in class Object

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Specified by:

writeExternal in interface Externalizable

Throws:

IOException

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
ClassNotFoundException

Specified by:

readExternal in interface Externalizable

Throws:

IOException

ClassNotFoundException