WhileStatement

java.lang.Object

simula.compiler.syntaxClass.SyntaxClass

simula.compiler.syntaxClass.statement.Statement

simula.compiler.syntaxClass.statement.WhileStatement

public final class WhileStatement extends Statement

While Statement.

 
 Simula Standard: 4.3 While-statement
 
   while-statement = WHILE Boolean-expression DO Statement

Link to GitHub: Source File.

Author:: SIMULA Standards Group, Øystein Myhre Andersen

Field Summary

Fields

Modifier and Type

Field

Description

private final Expression

condition

The WHILE condition

private final Statement

doStatement

The statement after DO

Fields inherited from class simula.compiler.syntaxClass.SyntaxClass
lineNumber
Constructor Summary

Constructors

Constructor

Description

WhileStatement(int line)

Create a new WhileStatement.
Method Summary

Modifier and Type

Method

Description

void

doChecking()

Perform semantic checking.

void

doJavaCoding()

Output Java code.

private boolean

isWhileTrueDo()

Check if this while statement is a 'while true do'.

void

printTree(int indent)

Utility print syntax tree method.

String

toString()

Methods inherited from class simula.compiler.syntaxClass.statement.Statement
expectStatement

Methods inherited from class simula.compiler.syntaxClass.SyntaxClass
ASSERT_SEMANTICS_CHECKED, doDeclarationCoding, edIndent, edTreeIndent, IS_SEMANTICS_CHECKED, print, SET_SEMANTICS_CHECKED, toJavaCode

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details
- condition
  
  private final Expression condition
  
  The WHILE condition
- doStatement
  
  private final Statement doStatement
  
  The statement after DO
Constructor Details
- WhileStatement
  
  WhileStatement(int line)
  
  Create a new WhileStatement.
  
  Parameters:
  
  line - the source line number
Method Details
- 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 Statement
- isWhileTrueDo
  
  private boolean isWhileTrueDo()
  
  Check if this while statement is a 'while true do'.
  
  Returns:
  
  true if this while statement is a 'while true do'
- 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