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Programming Interface Information:
This information is NOT
intended to be
used as Programming Interfaces of VM/ESA. It is to be used for diagnosis only. |
STADF
Cross Reference (Contains links to field and bit definitions)
STADF Prolog
Name : HCPSTADF
Description: Syntax state definition area
STATUS : VM/ESA Version 2, Release 1.0
DSECT : STADF
Function : The STADF contains information that describes a state
that the syntax checking is in. It indicates whether
a token match is optional or not. STADF is used in
conjunction with CONDF and TOKDF to define a syntax
tree.
Created by : invocation of the HCPDOSYN macro.
References : None
Comments : Note that STADF entries are unaligned.
This requires that all of the DSs that would normally
enforce alignment (like A and F) must specify an
explicit length attribute in order to skip alignment.
STADF Control Block Content
STADF DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure STADF Syntax state definition area 0000 0 Signed 2 STATKNUM Number of TOKDFs under this STADF 0002 2 Bitstring 1 STADFLAG Flag to mark conversion type 1... .... STADFOPT X'80' Token match is optional .1.. .... STADTERM X'40' No STADFs follow this one ..1. .... STADVEND X'20' This is a valid end state ...1 .... STADONEM X'10' At least one match required 0003 3 Bitstring 1 * Spare byte 0004 4 Signed 2 STADFNXT Transition to next state (offset) 0006 6 Signed 2 STADFNUM State # (for syntax chkr) 0008 8 Signed 4 STAMSSNG Message if token is missing 000C 12 Character 1 STA$END (0) The end 0000000C STADFLEN *-STADF Length of STADF entry
STADF Storage Layout
*** STADF - Syntax state definition area * * +-------------+------+------+-------------+-------------+ * 0 | STATKNUM |:DFLAG|//////| STADFNXT | STADFNUM | * +-------------+------+------+-------------+-------------+ * 8 | STAMSSNG | | * +---------------------------+ | * 10 | | * = STA$END = * | | * +-------------------------------------------------------+ * *** STADF - Syntax state definition area
STADF Cross Reference
(contains links to field and bit definitions)Symbol Dspl Value -------------- ---- -----STA$END 000C
STADFLAG 0002
STADFLEN 000C 0000000C
STADFNUM 0006
STADFNXT 0004
STADFOPT 0002 80
STADONEM 0002 10
STADTERM 0002 40
STADVEND 0002 20
STAMSSNG 0008
STATKNUM 0000
Last updated on 3 Aug 1999 at 12:36:44 EDT.
Copyright IBM Corporation, 1990, 1999