The Patterns Opcodes

The pattern support operations are used to facilitate the transformations of the opcodes produced by to compiler into opcodes that produce the correct translations when they are authored. They are as follows:

Opcode	Description
NEW	Start new command
ARG	Specify argument type
BIF	Reference to built in function
EOP	End of property section
EOS	End of control property sequence
COM	Combine arguments
APS	Author pattern string
LEV	Specify calling level
TYV	Load type of variable
PAT	Load pattern from library
SCT	Set extended control type
PAR	Pass an argument unspecified
TMP	Establish a temporary value
REF	Anchor a reference to a symbol
INV	Define initial value for a basic type
DPS	Load Declared pattern string
CMT	Comment out preceding statement

The CMT opcode

The CMT opcode has 19 DoubleByte operations as follows. It has no special role. Generally, its operations insert comments into the target code. They are as follows:

Operation	Description
CommentOut	A generic operation that comments out a statement
Delete	A generic operation that deletes a statement
Deprecated	Authors a Deprecated message before a statement
NotImplemented	Authors a Not Implemented comment before a commented out statement
MustCorrect	Authors a Must Correct comment before a commented out statement
WarnMessage	Authors a component specific Deprecated message before a statement
IssueMessage	Authors a component specific Not Implemented message before a commented out statement
IssueComment	Authors a component specific Commentet Out message before a commented out statement
IfStatement	Comments out a If statement referencing a component to be commented out
ElseIfTrue	Comments out an else if statement referencing a component to be commented out
ElseAnything	Comments out an else statement referencing a component to be commented out
EndIf	Comments out an end if whose corresponding if referenced a component to be commented out
OnErrorResume	Comments out On Error Resume statements that were not analysed out
OnErrorGoto	Comments out On Error Goto statements that were not analysed out
OnErrorTurnOff	Comments out On Error Goto 0 statements that were not analysed out
Resume0	Comments out Resume statements that were not analysed out
ResumeNext	Comments out Resume Next statements that were not analysed out
ResumeLabel	Comments out Resume label statements that were not analysed out
WriteLine	Writes various types of extraneous statements within authored ASP pages

CMT.CommentOut

The CMT.CommentOut operation is emitted by the method Opcode_CommentOut() when its cmType parameter is set to CMT.CommentOut or when its cmType parameter is not set to CMT.Delete and the Select CodeCommentOut attribute is on. Its surface form argument is the representation of the statement being commented out


<subcode id="CommentOut">
   <vbn narg="1" code="' %1d\n"/>
   <csh narg="1" code="// %1d\n"/>
</subcode>

and its effect is to add the appropriate comment character at the front of the statement.

CMT.Delete

The CMT.Delete operation is emitted by the method Opcode_CommentOut() when its cmType parameter is set to CMT.Delete. Its surface form arguments are the entire current content of the string queue


<subcode id="Delete">
   <all narg="9"/>
</subcode>

and its effect is to simply empty the string queue.

CMT.NotImplemented

The CMT.NotImplemented operation is emitted by the method Opcode_CommentOut() when its cmType parameter is set to CMT.NotImplemented and the Select CodeCommentOut attribute is off. Its surface form argument is the representation of the statement being commented out


   <subcode id="NotImplemented">

and its effect enclose is to add the appropriate comment character at the front of the statement.

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