[antlr-interest] Having the "include" file as part the AST

[Jim O'Connor]

Hi All,
	I am working with the Job Control Language (JCL).  It has statements
that "describe" INCLUDE-type files.

//**** Main File ****/
//LABEL1   EXEC PROC=MYPROC,SYMB1=VALUE1


/*********  Proc file: MYPROC.PRC *********/
//D1      DD       DSN=DATAFILE,DISP=&SYMB1
//D2      DD      DUMMY



What would result for processing is

//LABEL1   EXEC PROC=MYPROC,SYMB1=VALUE1
//D1      DD       DSN=DATAFILE,DISP=VALUE1
//D2      DD      DUMMY



	I am struggling with the INCLUDE file mechanism.  It hides the
INCLUDE file statement from the main parser.  An INCLUDE statement is not
part of the C language.  It is part of pre-processing.

	With my JCL parser, I am trying to create an AST that contains the
EXEC PROC statement.  Is there a mechanism that passes the "//" "LABEL1"
"EXEC" "PROC" "=" "MYPROC" tokens to the parser while starting the new lexer
at the correct time?  Is this description clear?
Jim


 

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