scale.frontend.fortran
Class ImpliedDo

java.lang.Object
  scale.frontend.fortran.ImpliedDo

public class ImpliedDo
extends java.lang.Object

This class is used to process the Fortran implied-do constructs.

$Id: ImpliedDo.java,v 1.12 2007-10-04 19:58:13 burrill Exp $

Copyright 2008 by the Scale Compiler Group,
Department of Computer Science
University of Massachusetts,
Amherst MA. 01003, USA
All Rights Reserved.

Constructor Summary

ImpliedDo(F95 f95, int lineno)

Method Summary

void	add(Expression exp) Add an expression to be iterated over.
void	add(ImpliedDo id) Add another implied-do to be iterated over.
void	addData(Literal value, long repeat) Record a data item for use in DATA statements.
DoLoopStmt	genImpliedDoLoop(int callback, F95 f95) Generate the implied do loops and return the outer-most DO statement.
boolean	initVariables(boolean allowEqVars) Initialize the variables collected with the data collected.
void	set(VariableDecl indexVar, Expression init, Expression limit, Expression step) Specify the implied do loop.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

ImpliedDo

public ImpliedDo(F95 f95,
                 int lineno)

Parameters:

f95 - is the parser

lineno - is the source line number causing this implied do

Method Detail

add

public void add(Expression exp)

Add an expression to be iterated over. It is usually a SubscriptValueOp instance.

add

public void add(ImpliedDo id)

Add another implied-do to be iterated over. This occurs when two index variables are required as in ((A(I,J),1,10),1,5).

set

public void set(VariableDecl indexVar,
                Expression init,
                Expression limit,
                Expression step)
         throws InvalidException

Specify the implied do loop.

Parameters:

indexVar - is the iteration variable

init - is the initial value for the iteration variable

limit - is the end value for the iteration variable

step - is the increment

Throws:

InvalidException

addData

public void addData(Literal value,
                    long repeat)

Record a data item for use in DATA statements.

initVariables

public boolean initVariables(boolean allowEqVars)

Initialize the variables collected with the data collected.

Returns:

false if an error was encountered

genImpliedDoLoop

public DoLoopStmt genImpliedDoLoop(int callback,
                                   F95 f95)
                            throws InvalidException

Generate the implied do loops and return the outer-most DO statement. This method does a call back to the F95 class for each variable referenced.

Throws:

InvalidException

See Also:

F95.callback(int, scale.clef.expr.Expression, scale.clef.stmt.BlockStmt)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object