org.vishia.fbcl.readFBcl

Class ST2Execode

java.lang.Object

org.vishia.fbcl.readFBcl.ST2Execode

public class ST2Execode
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
private static java.util.Map<java.lang.String,Execode.EInstruction>	mapOperator
private static java.util.Map<java.lang.String,Execode.EInstruction>	mapUnaryOp

Constructor Summary

Constructors

Constructor and Description
ST2Execode()

Method Summary

Modifier and Type	Method and Description
static void	init()
private static void	prepAssignment(Statement_FBcl.Write stmnt, IEC61499data.Assignment_statement sraw, Write_Module_FBwr mdl)
private static long	prepExprOperand(Execode exec, IEC61499data.Expression xraw, Write_Module_FBwr mdl, int recursive) Converts the parsed ST expression into ReversPolishNotation.
static void	prepSimpleFB(IEC61499data.SimpleFB fbraw, Write_Module_FBwr mdl) Prepare a FBlock which contains textual Structure Text Yet only: Set expression to Module_FBcl#doutPort.

Methods inherited from class java.lang.Object

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

Field Detail

mapOperator

private static java.util.Map<java.lang.String,Execode.EInstruction> mapOperator

mapUnaryOp

private static java.util.Map<java.lang.String,Execode.EInstruction> mapUnaryOp

Constructor Detail

ST2Execode

public ST2Execode()

Method Detail

init

public static void init()

prepSimpleFB

public static void prepSimpleFB(IEC61499data.SimpleFB fbraw,
                                Write_Module_FBwr mdl)

Prepare a FBlock which contains textual Structure Text
Yet only: Set expression to Module_FBcl#doutPort. DoutMdl_FBcl.assignmentSimpleFB.

Parameters:

fbraw -

mdl -

prepAssignment

private static void prepAssignment(Statement_FBcl.Write stmnt,
                                   IEC61499data.Assignment_statement sraw,
                                   Write_Module_FBwr mdl)

prepExprOperand

private static long prepExprOperand(Execode exec,
                                    IEC61499data.Expression xraw,
                                    Write_Module_FBwr mdl,
                                    int recursive)

Converts the parsed ST expression into ReversPolishNotation.
The given expression from xraw is not RPN, it is a binary (Operand1 operator Operand2) structur or a structure with more (operator Operand ...) with an equal ranking: (Operand1 operator Operand2 operator3 Operand3 ...) because of the given syntax in the norm documents.

• The left Operand1 is one of IEC61499data.Expression
  • IEC61499data.Expression#constant
  • IEC61499data.Expression#variable maybe input pin, maybe local
  • IEC61499data.Expression#enumerated_value
  • IEC61499data.Expression#expression
• The (operator Operand2) and more (operator Operand3) etc. are stored in the elements of IEC61499data.Expression#operand. It contains the operator and the right side operand.
• The IEC61499data.Expression#operator is the operator regarded to the left Operand1. It has its meaning inside elements of IEC61499data.Expression#operand.
  Hence the the IEC61499data.Expression#operator of the first member is null (!) because Operand1 has not an operator left side. -
• The IEC61499data.Expression#unaryOp is regarded to the left side Operand1.
• The left side Operand1 and the list of Operand2... have always the same ranking (priority).
• An Operand which calculates a sub expression with a higher ranking is stored as IEC61499data.Expression#expression inside the IEC61499data.Expression#expression, it is a sub expression. That is valid not only for expressions in parenthesis, also for sub expressions with higher ranking without parenthesis.
• An only one part without following operand has an empty IEC61499data.Expression#operand list.

Parameters:

exec -

xraw -

mdl -

recursive -

Returns:

mask of input variables.