Programming Interface Information: This information is NOT intended to be used as Programming Interfaces of z/VM.

#### STADF

Prolog

Control Block Contents
STADF DSECT

Storage Layout

Cross Reference (Contains links to field and bit definitions)

#### STADF Prolog

     Name       : HCPSTADF
     Description: Syntax state definition area
     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' STADFOPT Token match is
                                            optional
              .1.. ....      STADTERM       X'40' STADTERM No STADFs follow
                                            this one
              ..1. ....      STADVEND       X'20' STADVEND This is a valid
                                            end state
              ...1 ....      STADONEM       X'10' STADONEM 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          |
    *     +---------------------------+
    *
    *** STADF - Syntax state definition area

#### STADF Cross Reference

    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

This information is based on z/VM V6R1.0. Last updated on 18 Feb 2010 at 09:08:27 EDT.
Copyright IBM Corporation, 1990, 2008