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firebird-mirror/src/gpre/pas.cpp
fsg e797f71a71 Some cosmetic changes
2003-06-01 17:02:22 +00:00

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//____________________________________________________________
//
// PROGRAM: PASCAL preprocesser
// MODULE: pas.cpp
// DESCRIPTION: Inserted text generator for Domain Pascal
//
// The contents of this file are subject to the Interbase Public
// License Version 1.0 (the "License"); you may not use this file
// except in compliance with the License. You may obtain a copy
// of the License at http://www.Inprise.com/IPL.html
//
// Software distributed under the License is distributed on an
// "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express
// or implied. See the License for the specific language governing
// rights and limitations under the License.
//
// The Original Code was created by Inprise Corporation
// and its predecessors. Portions created by Inprise Corporation are
// Copyright (C) Inprise Corporation.
//
// All Rights Reserved.
// Contributor(s): ______________________________________.
//
//
//____________________________________________________________
//
// $Id: pas.cpp,v 1.10 2003-06-01 17:02:22 fsg Exp $
//
#include "firebird.h"
#include "../jrd/ib_stdio.h"
#include "../jrd/common.h"
#include <stdarg.h>
#include <string.h>
#include "../jrd/gds.h"
#include "../gpre/gpre.h"
#include "../gpre/form.h"
#include "../gpre/pat.h"
#include "../gpre/cmp_proto.h"
#include "../gpre/lang_proto.h"
#include "../gpre/pat_proto.h"
#include "../gpre/gpre_proto.h"
#include "../gpre/prett_proto.h"
#include "../jrd/gds_proto.h"
#pragma FB_COMPILER_MESSAGE("This file is not fit for public consumption")
// #error compiler halted, 'rogue' not found...
// TMN: Upon converting this file to C++, it has been noted
// that this code would never have worked because of (SEGV) bug(s),
// why I rather than trying to use it currently remove it from compilation.
static void align(int);
static void asgn_from(ACT, REF, int);
static void asgn_sqlda_from(REF, int, TEXT *, int);
static void asgn_to(ACT, REF, int);
static void asgn_to_proc(REF, int);
static void gen_at_end(ACT, int);
static void gen_based(ACT, int);
static void gen_blob_close(ACT, USHORT);
static void gen_blob_end(ACT, USHORT);
static void gen_blob_for(ACT, USHORT);
static void gen_blob_open(ACT, USHORT);
static int gen_blr(int *, int, TEXT *);
static void gen_compile(ACT, int);
static void gen_create_database(ACT, int);
static int gen_cursor_close(ACT, GPRE_REQ, int);
static void gen_cursor_init(ACT, int);
static int gen_cursor_open(ACT, GPRE_REQ, int);
static void gen_database(ACT, int);
static void gen_ddl(ACT, int);
static void gen_drop_database(ACT, int);
static void gen_dyn_close(ACT, int);
static void gen_dyn_declare(ACT, int);
static void gen_dyn_describe(ACT, int, BOOLEAN);
static void gen_dyn_execute(ACT, int);
static void gen_dyn_fetch(ACT, int);
static void gen_dyn_immediate(ACT, int);
static void gen_dyn_insert(ACT, int);
static void gen_dyn_open(ACT, int);
static void gen_dyn_prepare(ACT, int);
static void gen_emodify(ACT, int);
static void gen_estore(ACT, int);
static void gen_endfor(ACT, int);
static void gen_erase(ACT, int);
static SSHORT gen_event_block(ACT);
static void gen_event_init(ACT, int);
static void gen_event_wait(ACT, int);
static void gen_fetch(ACT, int);
static void gen_finish(ACT, int);
static void gen_for(ACT, int);
#ifdef PYXIS
static void gen_form_display(ACT, int);
static void gen_form_end(ACT, int);
static void gen_form_for(ACT, int);
#endif
static void gen_get_or_put_slice(ACT, REF, BOOLEAN, int);
static void gen_get_segment(ACT, int);
#ifdef PYXIS
static void gen_item_end(ACT, int);
static void gen_item_for(ACT, int);
#endif
static void gen_loop(ACT, int);
#ifdef PYXIS
static void gen_menu(ACT, int);
static void gen_menu_display(ACT, int);
static void gen_menu_entree(ACT, int);
static void gen_menu_entree_att(ACT, int);
static void gen_menu_for(ACT, int);
static void gen_menu_item_end(ACT, int);
static void gen_menu_item_for(ACT, int);
static void gen_menu_request(GPRE_REQ, int);
#endif
static TEXT *gen_name(TEXT *, REF, BOOLEAN);
static void gen_on_error(ACT, USHORT);
static void gen_procedure(ACT, int);
static void gen_put_segment(ACT, int);
static void gen_raw(UCHAR *, int, int);
static void gen_ready(ACT, int);
static void gen_receive(ACT, int, POR);
static void gen_release(ACT, int);
static void gen_request(GPRE_REQ, int);
static void gen_return_value(ACT, int);
static void gen_routine(ACT, int);
static void gen_s_end(ACT, int);
static void gen_s_fetch(ACT, int);
static void gen_s_start(ACT, int);
static void gen_segment(ACT, int);
static void gen_select(ACT, int);
static void gen_send(ACT, POR, int);
static void gen_slice(ACT, int);
static void gen_start(ACT, POR, int);
static void gen_store(ACT, int);
static void gen_t_start(ACT, int);
static void gen_tpb(TPB, int);
static void gen_trans(ACT, int);
static void gen_update(ACT, int);
static void gen_variable(ACT, int);
static void gen_whenever(SWE, int);
#ifdef PYXIS
static void gen_window_create(ACT, int);
static void gen_window_delete(ACT, int);
static void gen_window_suspend(ACT, int);
#endif
static void make_array_declaration(REF);
static TEXT *make_name(TEXT *, SYM);
static void make_ok_test(ACT, GPRE_REQ, int);
static void make_port(POR, int);
static void make_ready(DBB, TEXT *, TEXT *, USHORT, GPRE_REQ);
static void printa(int, TEXT *, ...);
static TEXT *request_trans(ACT, GPRE_REQ);
static TEXT *status_vector(ACT);
static void t_start_auto(ACT, GPRE_REQ, TEXT *, int);
static int first_flag;
#define INDENT 3
#define BEGIN printa (column, "begin")
#define END printa (column, "end")
#define ENDS printa (column, "end;")
#ifdef VMS
#define SHORT_DCL "gds__short"
#define LONG_DCL "integer"
#define POINTER_DCL "gds__ptr_type"
#define PACKED_ARRAY "packed array"
#define OPEN_BRACKET "("
#define CLOSE_BRACKET ")"
#define REF_PAR "%REF "
#define SIZEOF "size"
#define STATIC_STRING "[STATIC]"
#define ISC_BADDRESS "ISC_BADDRESS"
#else
#define SHORT_DCL "integer16"
#define LONG_DCL "integer32"
#define POINTER_DCL "UNIV_PTR"
#define PACKED_ARRAY "array"
#define OPEN_BRACKET "["
#define CLOSE_BRACKET "]"
#define REF_PAR ""
#define SIZEOF "sizeof"
#define STATIC_STRING "STATIC"
#define ISC_BADDRESS "ADDR"
#endif
#define FB_DP_VOLATILE ""
#define GDS_EVENT_COUNTS "GDS__EVENT_COUNTS"
#define GDS_EVENT_WAIT "GDS__EVENT_WAIT"
#define SET_SQLCODE if (action->act_flags & ACT_sql) printa (column, "SQLCODE := gds__sqlcode (gds__status);")
//____________________________________________________________
//
// Code generator for Domain Pascal. Not to be confused with
// the language "Pascal".
//
void PAS_action( ACT action, int column)
{
// Put leading braces where required
switch (action->act_type) {
case ACT_alter_database:
case ACT_alter_domain:
case ACT_alter_table:
case ACT_alter_index:
case ACT_blob_close:
case ACT_blob_create:
case ACT_blob_for:
case ACT_blob_open:
case ACT_close:
case ACT_commit:
case ACT_commit_retain_context:
case ACT_create_database:
case ACT_create_domain:
case ACT_create_generator:
case ACT_create_index:
case ACT_create_shadow:
case ACT_create_table:
case ACT_create_view:
case ACT_declare_filter:
case ACT_declare_udf:
case ACT_disconnect:
case ACT_drop_database:
case ACT_drop_domain:
case ACT_drop_filter:
case ACT_drop_index:
case ACT_drop_shadow:
case ACT_drop_table:
case ACT_drop_udf:
case ACT_drop_view:
case ACT_dyn_close:
case ACT_dyn_cursor:
case ACT_dyn_describe:
case ACT_dyn_describe_input:
case ACT_dyn_execute:
case ACT_dyn_fetch:
case ACT_dyn_grant:
case ACT_dyn_immediate:
case ACT_dyn_insert:
case ACT_dyn_open:
case ACT_dyn_prepare:
case ACT_dyn_revoke:
case ACT_fetch:
case ACT_finish:
case ACT_for:
#ifdef PYXIS
case ACT_form_display:
case ACT_form_for:
#endif
case ACT_get_segment:
case ACT_get_slice:
case ACT_insert:
#ifdef PYXIS
case ACT_item_for:
case ACT_item_put:
#endif
case ACT_loop:
#ifdef PYXIS
case ACT_menu_for:
#endif
case ACT_modify:
case ACT_open:
case ACT_prepare:
case ACT_procedure:
case ACT_put_slice:
case ACT_ready:
case ACT_release:
case ACT_rfinish:
case ACT_rollback:
case ACT_s_fetch:
case ACT_s_start:
case ACT_select:
case ACT_start:
case ACT_store:
case ACT_update:
case ACT_statistics:
BEGIN;
};
switch (action->act_type) {
case ACT_alter_domain:
case ACT_create_domain:
case ACT_create_generator:
case ACT_create_shadow:
case ACT_declare_filter:
case ACT_declare_udf:
case ACT_drop_domain:
case ACT_drop_filter:
case ACT_drop_shadow:
case ACT_drop_udf:
case ACT_statistics:
case ACT_alter_index:
case ACT_alter_table:
gen_ddl(action, column);
break;
case ACT_at_end:
gen_at_end(action, column);
return;
case ACT_b_declare:
gen_database(action, column);
gen_routine(action, column);
return;
case ACT_basedon:
gen_based(action, column);
return;
case ACT_blob_cancel:
gen_blob_close(action, column);
return;
case ACT_blob_close:
gen_blob_close(action, column);
break;
case ACT_blob_create:
gen_blob_open(action, column);
break;
case ACT_blob_for:
gen_blob_for(action, column);
return;
case ACT_blob_handle:
gen_segment(action, column);
return;
case ACT_blob_open:
gen_blob_open(action, column);
break;
case ACT_close:
gen_s_end(action, column);
break;
case ACT_commit:
gen_trans(action, column);
break;
case ACT_commit_retain_context:
gen_trans(action, column);
break;
case ACT_create_database:
gen_create_database(action, column);
break;
case ACT_create_index:
gen_ddl(action, column);
break;
case ACT_create_table:
gen_ddl(action, column);
break;
case ACT_create_view:
gen_ddl(action, column);
break;
case ACT_cursor:
gen_cursor_init(action, column);
return;
case ACT_database:
gen_database(action, column);
return;
case ACT_disconnect:
gen_finish(action, column);
break;
case ACT_drop_database:
gen_drop_database(action, column);
break;
case ACT_drop_index:
gen_ddl(action, column);
break;
case ACT_drop_table:
gen_ddl(action, column);
break;
case ACT_drop_view:
gen_ddl(action, column);
break;
case ACT_dyn_close:
gen_dyn_close(action, column);
break;
case ACT_dyn_cursor:
gen_dyn_declare(action, column);
break;
case ACT_dyn_describe:
gen_dyn_describe(action, column, FALSE);
break;
case ACT_dyn_describe_input:
gen_dyn_describe(action, column, TRUE);
break;
case ACT_dyn_execute:
gen_dyn_execute(action, column);
break;
case ACT_dyn_fetch:
gen_dyn_fetch(action, column);
break;
case ACT_dyn_grant:
gen_ddl(action, column);
break;
case ACT_dyn_immediate:
gen_dyn_immediate(action, column);
break;
case ACT_dyn_insert:
gen_dyn_insert(action, column);
break;
case ACT_dyn_open:
gen_dyn_open(action, column);
break;
case ACT_dyn_prepare:
gen_dyn_prepare(action, column);
break;
case ACT_dyn_revoke:
gen_ddl(action, column);
break;
case ACT_endblob:
gen_blob_end(action, column);
return;
case ACT_enderror:{
column += INDENT;
END;
column -= INDENT;
}
break;
case ACT_endfor:
gen_endfor(action, column);
break;
case ACT_endmodify:
gen_emodify(action, column);
break;
case ACT_endstore:
gen_estore(action, column);
break;
case ACT_erase:
gen_erase(action, column);
return;
case ACT_event_init:
gen_event_init(action, column);
break;
case ACT_event_wait:
gen_event_wait(action, column);
break;
case ACT_fetch:
gen_fetch(action, column);
break;
case ACT_finish:
gen_finish(action, column);
break;
case ACT_for:
gen_for(action, column);
return;
#ifdef PYXIS
case ACT_form_display:
gen_form_display(action, column);
break;
case ACT_form_end:
gen_form_end(action, column);
break;
case ACT_form_for:
gen_form_for(action, column);
return;
#endif
case ACT_get_segment:
gen_get_segment(action, column);
break;
case ACT_get_slice:
gen_slice(action, column);
break;
case ACT_hctef:
ENDS;
break;
case ACT_insert:
gen_s_start(action, column);
break;
#ifdef PYXIS
case ACT_item_for:
case ACT_item_put:
gen_item_for(action, column);
return;
case ACT_item_end:
gen_item_end(action, column);
break;
#endif
case ACT_loop:
gen_loop(action, column);
break;
#ifdef PYXIS
case ACT_menu:
gen_menu(action, column);
return;
case ACT_menu_display:
gen_menu_display(action, column);
return;
case ACT_menu_end:
break;
case ACT_menu_entree:
gen_menu_entree(action, column);
return;
case ACT_menu_for:
gen_menu_for(action, column);
return;
case ACT_title_text:
case ACT_title_length:
case ACT_terminator:
case ACT_entree_text:
case ACT_entree_length:
case ACT_entree_value:
gen_menu_entree_att(action, column);
return;
#endif
case ACT_on_error:
gen_on_error(action, column);
return;
case ACT_open:
gen_s_start(action, column);
break;
case ACT_ready:
gen_ready(action, column);
break;
case ACT_put_segment:
gen_put_segment(action, column);
break;
case ACT_put_slice:
gen_slice(action, column);
break;
case ACT_prepare:
gen_trans(action, column);
break;
case ACT_procedure:
gen_procedure(action, column);
break;
case ACT_release:
gen_release(action, column);
break;
case ACT_rfinish:
gen_finish(action, column);
break;
case ACT_rollback:
gen_trans(action, column);
break;
case ACT_routine:
gen_routine(action, column);
return;
case ACT_s_end:
gen_s_end(action, column);
return;
case ACT_s_fetch:
gen_s_fetch(action, column);
return;
case ACT_s_start:
gen_s_start(action, column);
break;
case ACT_segment:
gen_segment(action, column);
return;
case ACT_segment_length:
gen_segment(action, column);
return;
case ACT_sql_dialect:
sw_sql_dialect = ((SDT) action->act_object)->sdt_dialect;
return;
case ACT_select:
gen_select(action, column);
break;
case ACT_start:
gen_t_start(action, column);
break;
case ACT_store:
gen_store(action, column);
return;
case ACT_store2:
gen_return_value(action, column);
return;
case ACT_update:
gen_update(action, column);
break;
case ACT_variable:
gen_variable(action, column);
return;
#ifdef PYXIS
case ACT_window_create:
gen_window_create(action, column);
return;
case ACT_window_delete:
gen_window_delete(action, column);
return;
case ACT_window_suspend:
gen_window_suspend(action, column);
return;
#endif
default:
return;
};
// Put in a trailing brace for those actions still with us
if (action->act_flags & ACT_sql)
gen_whenever(action->act_whenever, column);
if (action->act_error)
ib_fprintf(out_file, ";");
else
END;
}
//____________________________________________________________
//
// Align output to a specific column for output.
//
static void align( int column)
{
int i;
ib_putc('\n', out_file);
if (column < 0)
return;
for (i = column / 8; i; --i)
ib_putc('\t', out_file);
for (i = column % 8; i; --i)
ib_putc(' ', out_file);
}
//____________________________________________________________
//
// Build an assignment from a host language variable to
// a port variable.
//
static void asgn_from( ACT action, REF reference, int column)
{
GPRE_FLD field;
TEXT *value, name[64], variable[20], temp[20];
for (; reference; reference = reference->ref_next) {
field = reference->ref_field;
if (field->fld_array_info)
if (!(reference->ref_flags & REF_array_elem)) {
printa(column, "%s := gds__blob_null;\n",
gen_name(name, reference, TRUE));
gen_get_or_put_slice(action, reference, FALSE, column);
continue;
}
if (!reference->ref_source && !reference->ref_value)
continue;
align(column);
gen_name(variable, reference, TRUE);
if (reference->ref_source)
value = gen_name(temp, reference->ref_source, TRUE);
else
value = reference->ref_value;
if (reference->ref_value && (reference->ref_flags & REF_array_elem))
field = field->fld_array;
if (!field || (field->fld_flags & FLD_text))
ib_fprintf(out_file, "gds__ftof (%s%s, %s (%s), %s%s, %d);",
REF_PAR, value, SIZEOF, value, REF_PAR, variable,
field->fld_length);
else if (!reference->ref_master
|| (reference->ref_flags & REF_literal)) ib_fprintf(out_file,
"%s := %s;",
variable,
value);
else {
ib_fprintf(out_file, "if %s < 0 then", value);
align(column + 4);
ib_fprintf(out_file, "%s := -1", variable);
align(column);
ib_fprintf(out_file, "else");
align(column + 4);
ib_fprintf(out_file, "%s := 0;", variable);
}
}
}
//____________________________________________________________
//
// Build an assignment from a host language variable to
// a sqlda variable.
//
static void asgn_sqlda_from( REF reference, int number, TEXT * string, int column)
{
TEXT *value, temp[20];
for (; reference; reference = reference->ref_next) {
align(column);
if (reference->ref_source)
value = gen_name(temp, reference->ref_source, TRUE);
else
value = reference->ref_value;
ib_fprintf(out_file,
"gds__to_sqlda (gds__sqlda, %d, %s, %s(%s), %s);", number,
SIZEOF, value, value, string);
}
}
//____________________________________________________________
//
// Build an assignment to a host language variable from
// a port variable.
//
static void asgn_to(ACT action, REF reference, int column)
{
GPRE_FLD field;
REF source;
TEXT s[128];
source = reference->ref_friend;
field = source->ref_field;
if (field && field->fld_array_info) {
source->ref_value = reference->ref_value;
gen_get_or_put_slice(action, source, TRUE, column);
return;
}
if (field && (field->fld_flags & FLD_text))
ib_fprintf(out_file, "gds__ftof (%s%s, %d, %s%s, %s (%s));",
REF_PAR, gen_name(s, source, TRUE),
field->fld_length,
REF_PAR, reference->ref_value,
SIZEOF, reference->ref_value);
else
ib_fprintf(out_file, "%s := %s;", reference->ref_value,
gen_name(s, source, TRUE));
// Pick up NULL value if one is there
if (reference = reference->ref_null)
ib_fprintf(out_file, "%s := %s;", reference->ref_value,
gen_name(s, reference, TRUE));
}
//____________________________________________________________
//
// Build an assignment to a host language variable from
// a port variable.
//
static void asgn_to_proc(REF reference, int column)
{
GPRE_FLD field;
TEXT s[64];
for (; reference; reference = reference->ref_next) {
if (!reference->ref_value)
continue;
field = reference->ref_field;
gen_name(s, reference, TRUE);
align(column);
if (field && (field->fld_flags & FLD_text))
ib_fprintf(out_file, "gds__ftof (%s%s, %d, %s%s, %s (%s));",
REF_PAR, gen_name(s, reference, TRUE),
field->fld_length,
REF_PAR, reference->ref_value,
SIZEOF, reference->ref_value);
else
ib_fprintf(out_file, "%s := %s;",
reference->ref_value, gen_name(s, reference, TRUE));
}
}
//____________________________________________________________
//
// Generate code for AT END clause of FETCH.
//
static void gen_at_end( ACT action, int column)
{
GPRE_REQ request;
TEXT s[20];
request = action->act_request;
printa(column, "if %s = 0 then begin",
gen_name(s, request->req_eof, TRUE));
}
//____________________________________________________________
//
// Substitute for a BASED ON <field name> clause.
//
static void gen_based( ACT action, int column)
{
BAS based_on;
GPRE_FLD field;
TEXT s[64];
SSHORT datatype;
SLONG length;
DIM dimension;
align(column);
based_on = (BAS) action->act_object;
field = based_on->bas_field;
if (based_on->bas_flags & BAS_segment) {
datatype = dtype_text;
if (!(length = field->fld_seg_length))
length = 256;
ib_fprintf(out_file, "%s [1..%d] of ", PACKED_ARRAY, length);
}
else if (field->fld_array_info) {
datatype = field->fld_array_info->ary_dtype;
if (datatype <= dtype_varying)
ib_fprintf(out_file, "%s [", PACKED_ARRAY);
else
ib_fprintf(out_file, "array [");
for (dimension = field->fld_array_info->ary_dimension; dimension;
dimension = dimension->dim_next) {
ib_fprintf(out_file, "%d..%d", dimension->dim_lower,
dimension->dim_upper);
if (dimension->dim_next)
ib_fprintf(out_file, ", ");
}
if (datatype <= dtype_varying)
ib_fprintf(out_file, ", 1..%d", field->fld_array->fld_length);
ib_fprintf(out_file, "] of ");
}
else {
datatype = field->fld_dtype;
if (datatype <= dtype_varying)
ib_fprintf(out_file, "%s [1..%d] of ", PACKED_ARRAY,
field->fld_length);
}
switch (datatype) {
case dtype_short:
ib_fprintf(out_file, "%s;", SHORT_DCL);
break;
case dtype_long:
ib_fprintf(out_file, "%s;", LONG_DCL);
break;
case dtype_date:
case dtype_blob:
case dtype_quad:
ib_fprintf(out_file, "gds__quad;");
break;
case dtype_text:
ib_fprintf(out_file, "char;");
break;
case dtype_float:
ib_fprintf(out_file, "real;");
break;
case dtype_double:
ib_fprintf(out_file, "double;");
break;
default:
sprintf(s, "datatype %d unknown\n", field->fld_dtype);
CPR_error(s);
return;
}
}
//____________________________________________________________
//
// Make a blob FOR loop.
//
static void gen_blob_close( ACT action, USHORT column)
{
TEXT *command;
BLB blob;
if (action->act_error || (action->act_flags & ACT_sql))
BEGIN;
if (action->act_flags & ACT_sql) {
column = gen_cursor_close(action, action->act_request, column);
blob = (BLB) action->act_request->req_blobs;
}
else
blob = (BLB) action->act_object;
command = (action->act_type == ACT_blob_cancel) ? (TEXT*) "CANCEL" :
(TEXT*) "CLOSE";
printa(column, "GDS__%s_BLOB (%s, gds__%d);",
command, status_vector(action), blob->blb_ident);
if (action->act_flags & ACT_sql) {
END;
column -= INDENT;
ENDS;
column -= INDENT;
SET_SQLCODE;
END;
}
}
//____________________________________________________________
//
// End a blob FOR loop.
//
static void gen_blob_end(ACT action, USHORT column)
{
BLB blob;
blob = (BLB) action->act_object;
#ifdef VMS
gen_get_segment(action, column + INDENT);
#endif
printa(column + INDENT, "end;");
if (action->act_error)
printa(column, "GDS__CLOSE_BLOB (gds__status2, gds__%d);",
blob->blb_ident);
else
printa(column, "GDS__CLOSE_BLOB (%s, gds__%d);",
status_vector(0), blob->blb_ident);
if (action->act_error)
ENDS;
else
END;
}
//____________________________________________________________
//
// Make a blob FOR loop.
//
static void gen_blob_for( ACT action, USHORT column)
{
gen_blob_open(action, column);
if (action->act_error)
printa(column, "if (gds__status[2] = 0) then begin");
#ifdef VMS
gen_get_segment(action, column + INDENT);
printa(column + INDENT,
"while ((gds__status[2] = 0) or (gds__status[2] = gds__segment)) do");
printa(column + INDENT, "begin");
#else
printa(column, "while (true) do begin");
gen_get_segment(action, column + INDENT);
printa(column + INDENT,
"if ((gds__status[2] <> 0) and (gds__status[2] <> gds__segment)) then");
printa(column + 2 * INDENT, "exit;");
#endif
}
//____________________________________________________________
//
// Generate the call to open (or create) a blob.
//
static void gen_blob_open( ACT action, USHORT column)
{
BLB blob;
PAT args;
REF reference;
TEXT s[20];
TEXT *pattern1 =
"GDS__%IFCREATE%ELOPEN%EN_BLOB2 (%V1, %RF%DH, %RF%RT, %RF%BH, %RF%FR, %N1, %RF%I1);",
*pattern2 =
"GDS__%IFCREATE%ELOPEN%EN_BLOB2 (%V1, %RF%DH, %RF%RT, %RF%BH, %RF%FR, 0, 0);";
if (sw_auto && (action->act_flags & ACT_sql)) {
t_start_auto(action, action->act_request, status_vector(action),
column);
printa(column, "if %s <> nil then",
request_trans(action, action->act_request));
column += INDENT;
}
if ((action->act_error && (action->act_type != ACT_blob_for)) ||
action->act_flags & ACT_sql)
BEGIN;
if (action->act_flags & ACT_sql) {
column = gen_cursor_open(action, action->act_request, column);
blob = (BLB) action->act_request->req_blobs;
reference = ((OPN) action->act_object)->opn_using;
gen_name(s, reference, TRUE);
}
else {
blob = (BLB) action->act_object;
reference = blob->blb_reference;
}
args.pat_condition = action->act_type == ACT_blob_create; /* open or create blob */
args.pat_vector1 = status_vector(action); /* status vector */
args.pat_database = blob->blb_request->req_database; /* database handle */
args.pat_request = blob->blb_request; /* transaction handle */
args.pat_blob = blob; /* blob handle */
args.pat_reference = reference; /* blob identifier */
args.pat_ident1 = blob->blb_bpb_ident;
if ((action->act_flags & ACT_sql) && action->act_type == ACT_blob_open)
printa(column, "%s := %s;", s, reference->ref_value);
if (args.pat_value1 = blob->blb_bpb_length)
PATTERN_expand(column, pattern1, &args);
else
PATTERN_expand(column, pattern2, &args);
if (action->act_flags & ACT_sql) {
END;
column -= INDENT;
END;
column -= INDENT;
ENDS;
column -= INDENT;
if (sw_auto) {
END;
column -= INDENT;
}
SET_SQLCODE;
if (action->act_type == ACT_blob_create) {
printa(column, "if SQLCODE = 0 then");
align(column + INDENT);
ib_fprintf(out_file, "%s := %s;", reference->ref_value, s);
}
}
}
//____________________________________________________________
//
// Callback routine for BLR pretty printer.
//
static int gen_blr( int *user_arg, int offset, TEXT * string)
{
int indent, length;
TEXT *p, *q, c;
BOOLEAN open_quote, first_line;
first_line = TRUE;
indent = 2 * INDENT;
p = string;
while (*p == ' ') {
p++;
indent++;
}
// Limit indentation to 192 characters
indent = MIN(indent, 192);
length = strlen(p);
while (length + indent > 255) {
/* if we did not find somewhere to break between the 200th and 256th character
just print out 256 characters */
for (q = p, open_quote = FALSE; (q - p + indent) < 255; q++) {
if ((q - p + indent) > 220 && *q == ',' && !open_quote)
break;
if (*q == '\'' && *(q - 1) != '\\')
open_quote = !open_quote;
}
c = *++q;
*q = 0;
printa(indent, p);
*q = c;
length = length - (q - p);
p = q;
if (first_line) {
indent = MIN(indent + INDENT, 192);
first_line = FALSE;
}
}
printa(indent, p);
return TRUE;
}
//____________________________________________________________
//
// Generate text to compile a request.
//
static void gen_compile( ACT action, int column)
{
GPRE_REQ request;
DBB db;
SYM symbol;
TEXT *filename;
BLB blob;
request = action->act_request;
db = request->req_database;
symbol = db->dbb_name;
if (sw_auto) {
if ((filename = db->dbb_runtime) || !(db->dbb_flags & DBB_sqlca)) {
printa(column, "if %s = nil then", symbol->sym_string);
make_ready(db, filename, status_vector(action), column + INDENT,
0);
}
if (action->act_error || (action->act_flags & ACT_sql))
printa(column, "if (%s = nil) and (%s <> nil) then",
request_trans(action, request), symbol->sym_string);
else
printa(column, "if %s = nil then",
request_trans(action, request));
t_start_auto(action, request, status_vector(action), column + INDENT);
}
if ((action->act_error || (action->act_flags & ACT_sql)) && sw_auto)
printa(column, "if (%s = nil) and (%s <> nil) then",
request->req_handle, request_trans(action, request));
else
printa(column, "if %s = nil then", request->req_handle);
align(column + INDENT);
ib_fprintf(out_file,
"GDS__COMPILE_REQUEST%s (%s, %s, %s, %d, gds__%d);\n",
(request->req_flags & REQ_exp_hand) ? "" : "2",
status_vector(action), symbol->sym_string, request->req_handle,
request->req_length, request->req_ident);
// If blobs are present, zero out all of the blob handles. After this
// point, the handles are the user's responsibility
for (blob = request->req_blobs; blob; blob = blob->blb_next)
printa(column - INDENT, "gds__%d := nil;", blob->blb_ident);
}
//____________________________________________________________
//
// Generate a call to create a database.
//
static void gen_create_database( ACT action, int column)
{
GPRE_REQ request;
DBB db;
USHORT save_sw_auto;
request = ((MDBB) action->act_object)->mdbb_dpb_request;
db = (DBB) request->req_database;
align(column);
if (request->req_length)
ib_fprintf(out_file,
"GDS__CREATE_DATABASE (%s, %d, '%s', %s, %d, gds__%d, 0);",
status_vector(action),
strlen(db->dbb_filename),
db->dbb_filename,
db->dbb_name->sym_string,
request->req_length, request->req_ident);
else
ib_fprintf(out_file,
"GDS__CREATE_DATABASE (%s, %d, '%s', %s, 0, 0, 0);",
status_vector(action),
strlen(db->dbb_filename),
db->dbb_filename, db->dbb_name->sym_string);
save_sw_auto = sw_auto;
sw_auto = TRUE;
printa(column, "if (gds__status [2] = 0) then");
BEGIN;
gen_ddl(action, column);
ENDS;
sw_auto = save_sw_auto;
column -= INDENT;
SET_SQLCODE;
}
//____________________________________________________________
//
// Generate substitution text for END_STREAM.
//
static int gen_cursor_close( ACT action, GPRE_REQ request, int column)
{
PAT args;
TEXT *pattern1 = "if %RIs <> nil then";
TEXT *pattern2 = "isc_dsql_free_statement (%V1, %RF%RIs, %N1);";
args.pat_request = request;
args.pat_vector1 = status_vector(action);
args.pat_value1 = 1;
PATTERN_expand(column, pattern1, &args);
column += INDENT;
BEGIN;
PATTERN_expand(column, pattern2, &args);
printa(column, "if (gds__status[2] = 0) then");
column += INDENT;
BEGIN;
return column;
}
//____________________________________________________________
//
// Generate text to initialize a cursor.
//
static void gen_cursor_init( ACT action, int column)
{
// If blobs are present, zero out all of the blob handles. After this
// point, the handles are the user's responsibility
if (action->act_request->
req_flags & (REQ_sql_blob_open | REQ_sql_blob_create)) printa(column,
"gds__%d := nil;",
action->
act_request->
req_blobs->
blb_ident);
}
//____________________________________________________________
//
// Generate text to open an embedded SQL cursor.
//
static int gen_cursor_open( ACT action, GPRE_REQ request, int column)
{
PAT args;
TEXT s[64];
TEXT *pattern1 =
"if (%RIs = nil) and (%RH <> nil)%IF and (%DH <> nil)%EN then",
*pattern2 = "if (%RIs = nil)%IF and (%DH <> nil)%EN then", *pattern3 =
"isc_dsql_alloc_statement2 (%V1, %RF%DH, %RF%RIs);", *pattern4 =
"if (%RIs <> nil)%IF and (%S3 <> nil)%EN then", *pattern5 =
"isc_dsql_set_cursor_name (%V1, %RF%RIs, %S1, 0);", *pattern6 =
"isc_dsql_execute_m (%V1, %RF%S3, %RF%RIs, 0, gds__null, %N2, 0, gds__null);";
args.pat_request = request;
args.pat_database = request->req_database;
args.pat_vector1 = status_vector(action);
args.pat_condition = sw_auto && TRUE;
args.pat_string1 = make_name(s, ((OPN) action->act_object)->opn_cursor);
args.pat_string3 = request_trans(action, request);
args.pat_value2 = -1;
PATTERN_expand(column,
(action->act_type == ACT_open) ? pattern1 : pattern2,
&args);
PATTERN_expand(column + INDENT, pattern3, &args);
PATTERN_expand(column, pattern4, &args);
column += INDENT;
BEGIN;
PATTERN_expand(column, pattern5, &args);
printa(column, "if (gds__status[2] = 0) then");
column += INDENT;
BEGIN;
PATTERN_expand(column, pattern6, &args);
printa(column, "if (gds__status[2] = 0) then");
column += INDENT;
BEGIN;
return column;
}
//____________________________________________________________
//
// Generate insertion text for the database statement,
// including the definitions of all requests, and blob
// ans port declarations for requests in the main routine.
//
static void gen_database( ACT action, int column)
{
DBB db;
GPRE_REQ request;
POR port;
BLB blob;
USHORT count, flag;
TPB tpb;
#ifdef PYXIS
FORM form;
#endif
BOOLEAN all_static, all_extern;
int indent;
REF reference;
BOOLEAN array_flag;
SSHORT event_count, max_count;
LLS stack_ptr;
if (first_flag++ != 0)
return;
ib_fprintf(out_file, "\n(**** GPRE Preprocessor Definitions ****)\n");
#ifdef VMS
ib_fprintf(out_file, "%%include 'interbase:[syslib]gds.pas'\n");
#else
ib_fprintf(out_file, "%%include '/interbase/include/gds.ins.pas';\n");
#endif
indent = column + INDENT;
flag = TRUE;
for (request = requests; request; request = request->req_next) {
if (request->req_flags & REQ_local)
continue;
for (port = request->req_ports; port; port = port->por_next) {
if (flag) {
flag = FALSE;
ib_fprintf(out_file, "type");
}
make_port(port, indent);
}
}
ib_fprintf(out_file, "\nvar");
#ifdef PYXIS
for (db = isc_databases; db; db = db->dbb_next)
for (form = db->dbb_forms; form; form = form->form_next)
printa(indent, "%s\t\t: %s gds__handle := nil;\t\t(* form %s *)",
form->form_handle, STATIC_STRING,
form->form_name->sym_string);
#endif
for (request = requests; request; request = request->req_routine) {
if (request->req_flags & REQ_local)
continue;
for (port = request->req_ports; port; port = port->por_next)
printa(indent, "gds__%d\t: gds__%dt;\t\t\t(* message *)",
port->por_ident, port->por_ident);
for (blob = request->req_blobs; blob; blob = blob->blb_next) {
printa(indent, "gds__%d\t: gds__handle;\t\t\t(* blob handle *)",
blob->blb_ident);
printa(indent,
"gds__%d\t: %s [1 .. %d] of char;\t(* blob segment *)",
blob->blb_buff_ident, PACKED_ARRAY, blob->blb_seg_length);
printa(indent, "gds__%d\t: %s;\t\t\t(* segment length *)",
blob->blb_len_ident, SHORT_DCL);
}
}
all_static = TRUE;
all_extern = TRUE;
for (db = isc_databases; db; db = db->dbb_next) {
all_static = all_static && (db->dbb_scope == DBB_STATIC);
all_extern = all_extern && (db->dbb_scope == DBB_EXTERN);
if (db->dbb_scope == DBB_STATIC)
printa(indent,
"%s\t: %s gds__handle\t:= nil; (* database handle *)",
db->dbb_name->sym_string, STATIC_STRING);
}
count = 0;
for (db = isc_databases; db; db = db->dbb_next) {
count++;
for (tpb = db->dbb_tpbs; tpb; tpb = tpb->tpb_dbb_next)
gen_tpb(tpb, indent);
}
printa(indent,
"gds__teb\t: array [1..%d] of gds__teb_t;\t(* transaction vector *)",
count);
// generate event parameter block for each event in module
max_count = 0;
for (stack_ptr = events; stack_ptr; stack_ptr = stack_ptr->lls_next) {
event_count = gen_event_block(reinterpret_cast<act*>(stack_ptr->lls_object));
max_count = MAX(event_count, max_count);
}
if (max_count) {
printa(indent,
"gds__events\t\t: %s array [1..%d] of %s;\t\t(* event vector *)",
STATIC_STRING, max_count, LONG_DCL);
printa(indent,
"gds__event_names\t\t: %s array [1..%d] of %s;\t\t(* event buffer *)",
STATIC_STRING, max_count, POINTER_DCL);
printa(indent,
"gds__event_names2\t\t: %s %s [1..%d, 1..31] of char;\t\t(* event string buffer *)",
STATIC_STRING, PACKED_ARRAY, max_count);
}
array_flag = FALSE;
for (request = requests; request; request = request->req_next) {
gen_request(request, indent);
/* Array declarations */
if (request->req_type == REQ_slice)
array_flag = TRUE;
if (port = request->req_primary)
for (reference = port->por_references; reference;
reference =
reference->ref_next) if (reference->
ref_flags & REF_fetch_array) {
make_array_declaration(reference);
array_flag = TRUE;
}
}
#ifdef VMS
if (array_flag)
printa(indent,
"gds__array_length\t: integer;\t\t\t(* slice return value *)");
#else
if (array_flag)
printa(indent,
"gds__array_length\t: integer32;\t\t\t(* slice return value *)");
#endif
printa(indent,
"gds__null\t\t: ^gds__status_vector := nil;\t(* null status vector *)");
printa(indent,
"gds__blob_null\t: gds__quad := %s0,0%s;\t\t(* null blob id *)",
OPEN_BRACKET, CLOSE_BRACKET);
#ifdef VMS
if (all_static) {
printa(indent,
"gds__trans\t\t: %s gds__handle := nil;\t\t(* default transaction *)",
STATIC_STRING);
printa(indent,
"gds__status\t\t: %s gds__status_vector;\t\t(* status vector *)",
STATIC_STRING);
printa(indent,
"gds__status2\t\t: %s gds__status_vector;\t\t(* status vector *)",
STATIC_STRING);
printa(indent,
"SQLCODE\t: %s integer := 0;\t\t\t(* SQL status code *)",
STATIC_STRING);
if (sw_pyxis) {
printa(indent,
"gds__window\t\t: [COMMON (gds__window)] gds__handle;\t\t(* window handle *)");
printa(indent,
"gds__width\t\t: [COMMON (gds__width)] %s;\t(* window width *)",
SHORT_DCL);
printa(indent,
"gds__height\t\t: [COMMON (gds__height)] %s;\t(* window height *)",
SHORT_DCL);
}
}
else if (all_extern) {
printa(indent,
"gds__trans\t\t: [COMMON (gds__trans)] gds__handle;\t\t(* default transaction *)");
printa(indent,
"gds__status\t\t: [COMMON (gds__status)] gds__status_vector;\t\t(* status vector *)");
printa(indent,
"gds__status2\t\t: [COMMON (gds__status2)] gds__status_vector;\t\t(* status vector *)");
printa(indent,
"SQLCODE\t: [COMMON (SQLCODE)] integer;\t\t\t(* SQL status code *)");
}
else {
printa(indent,
"gds__trans\t\t: [COMMON (gds__trans)] gds__handle := nil;\t\t(* default transaction *)");
printa(indent,
"gds__status\t\t: [COMMON (gds__status)] gds__status_vector;\t\t(* status vector *)");
printa(indent,
"gds__status2\t\t: [COMMON (gds__status2)] gds__status_vector;\t\t(* status vector *)");
printa(indent,
"SQLCODE\t: [COMMON (SQLCODE)] integer := 0;\t\t\t(* SQL status code *)");
}
printa(indent,
"gds__window\t\t: [COMMON (gds__window)] gds__handle := nil;\t\t(* window handle *)");
printa(indent,
"gds__width\t\t: [COMMON (gds__width)] %s := 80;\t(* window width *)",
SHORT_DCL);
printa(indent,
"gds__height\t\t: [COMMON (gds__height)] %s := 24;\t(* window height *)",
SHORT_DCL);
#else
if (all_static) {
printa(indent,
"gds__trans\t\t: %s gds__handle := nil;\t\t(* default transaction *)",
STATIC_STRING);
printa(indent,
"gds__status\t\t: %s gds__status_vector;\t\t(* status vector *)",
STATIC_STRING);
printa(indent,
"gds__status2\t\t: %s gds__status_vector;\t\t(* status vector *)",
STATIC_STRING);
printa(indent,
"SQLCODE\t: %s integer := 0;\t\t\t(* SQL status code *)",
STATIC_STRING);
}
else {
printa(column, "\nvar (gds__trans)");
printa(indent,
"gds__trans\t\t: gds__handle%s;\t\t(* default transaction *)",
(all_extern) ? "" : "\t:= nil");
printa(column, "\nvar (gds__status)");
printa(indent,
"gds__status\t\t: gds__status_vector;\t\t(* status vector *)");
printa(column, "\nvar (gds__status2)");
printa(indent,
"gds__status2\t\t: gds__status_vector;\t\t(* status vector *)");
printa(column, "\nvar (SQLCODE)");
printa(indent, "SQLCODE\t: integer%s;\t\t\t(* SQL status code *)",
(all_extern) ? "" : "\t:= 0");
}
printa(column, "\nvar (gds__window)");
printa(indent,
"gds__window\t\t: gds__handle := nil;\t\t(* window handle *)");
printa(column, "\nvar (gds__width)");
printa(indent, "gds__width\t\t: %s := 80;\t(* window width *)",
SHORT_DCL);
printa(column, "\nvar (gds__height)");
printa(indent, "gds__height\t\t: %s := 24;\t(* window height *)",
SHORT_DCL);
#endif
for (db = isc_databases; db; db = db->dbb_next) {
if (db->dbb_scope != DBB_STATIC) {
#ifdef VMS
printa(indent,
"%s\t: [COMMON (%s)] gds__handle%s; (* database handle *)",
db->dbb_name->sym_string, db->dbb_name->sym_string,
(db->dbb_scope == DBB_EXTERN) ? "" : "\t:= nil");
#else
printa(column, "\nvar (%s)", db->dbb_name->sym_string);
printa(indent, "%s\t: gds__handle%s; (* database handle *)",
db->dbb_name->sym_string,
(db->dbb_scope == DBB_EXTERN) ? "" : "\t:= nil");
#endif
}
}
printa(column, " ");
printa(column, "(**** end of GPRE definitions ****)");
}
//____________________________________________________________
//
// Generate a call to update metadata.
//
static void gen_ddl( ACT action, int column)
{
GPRE_REQ request;
if (sw_auto) {
printa(column, "if (gds__trans = nil) then");
column += INDENT;
t_start_auto(action, 0, status_vector(action), column + INDENT);
column -= INDENT;
}
// Set up command type for call to RDB$DDL
request = action->act_request;
if (sw_auto) {
printa(column, "if (gds__trans <> nil) then");
column += INDENT;
}
align(column);
ib_fprintf(out_file, "GDS__DDL (%s, %s, gds__trans, %d, gds__%d);",
status_vector(action),
request->req_database->dbb_name->sym_string,
request->req_length, request->req_ident);
if (sw_auto) {
column -= INDENT;
printa(column, "if (gds__status [2] = 0) then");
printa(column + INDENT, "GDS__COMMIT_TRANSACTION (%s, gds__trans);",
status_vector(action));
printa(column, "if (gds__status [2] <> 0) then");
printa(column + INDENT,
"GDS__ROLLBACK_TRANSACTION (gds__null^ , gds__trans);");
}
SET_SQLCODE;
}
//____________________________________________________________
//
// Generate a call to create a database.
//
static void gen_drop_database( ACT action, int column)
{
DBB db;
db = (DBB) action->act_object;
align(column);
ib_fprintf(out_file,
"GDS__DROP_DATABASE (%s, %d, '%s', RDB$K_DB_TYPE_GDS);",
status_vector(action),
strlen(db->dbb_filename), db->dbb_filename);
SET_SQLCODE;
}
//____________________________________________________________
//
// Generate a dynamic SQL statement.
//
static void gen_dyn_close( ACT action, int column)
{
DYN statement;
TEXT s[64];
statement = (DYN) action->act_object;
printa(column,
"isc_embed_dsql_close (gds__status, %s);",
make_name(s, statement->dyn_cursor_name));
SET_SQLCODE;
}
//____________________________________________________________
//
// Generate a dynamic SQL statement.
//
static void gen_dyn_declare( ACT action, int column)
{
DYN statement;
TEXT s1[64], s2[64];
statement = (DYN) action->act_object;
printa(column,
"isc_embed_dsql_declare (gds__status, %s, %s);",
make_name(s1, statement->dyn_statement_name),
make_name(s2, statement->dyn_cursor_name));
SET_SQLCODE;
}
//____________________________________________________________
//
// Generate a dynamic SQL statement.
//
static void gen_dyn_describe( ACT action, int column, BOOLEAN bind_flag)
{
DYN statement;
TEXT s[64];
statement = (DYN) action->act_object;
printa(column,
"isc_embed_dsql_describe%s (gds__status, %s, %d, %s %s);",
bind_flag ? "_bind" : "",
make_name(s, statement->dyn_statement_name),
sw_sql_dialect, REF_PAR, statement->dyn_sqlda);
SET_SQLCODE;
}
//____________________________________________________________
//
// Generate a dynamic SQL statement.
//
static void gen_dyn_execute( ACT action, int column)
{
DYN statement;
TEXT *transaction, s[64];
struct gpre_req *request, req_const;
GPRE_NOD var_list;
int i;
statement = (DYN) action->act_object;
if (statement->dyn_trans) {
transaction = statement->dyn_trans;
request = &req_const;
request->req_trans = transaction;
}
else {
transaction = "gds__trans";
request = NULL;
}
if (sw_auto) {
printa(column, "if (%s = nil) then", transaction);
column += INDENT;
t_start_auto(action, request, status_vector(action), column + INDENT);
column -= INDENT;
}
make_name(s, statement->dyn_cursor_name);
if (var_list = statement->dyn_using) {
printa(column, "gds__sqlda.sqln = %s;", sw_dyn_using);
printa(column, "gds__sqlda.sqld = %s;", sw_dyn_using);
for (i = 0; i < var_list->nod_count; i++)
asgn_sqlda_from(reinterpret_cast<ref*>(var_list->nod_arg[i]), i, s, column);
}
printa(column,
(statement->dyn_sqlda2) ?
(TEXT*) "isc_embed_dsql_execute2 (gds__status, %s, %s, %d, %s %s, %s %s);"
: (TEXT*) "isc_embed_dsql_execute (gds__status, %s, %s, %d, %s %s);",
transaction, make_name(s, statement->dyn_statement_name),
sw_sql_dialect, REF_PAR,
(statement->dyn_sqlda) ? statement->dyn_sqlda : "gds__null^",
REF_PAR,
(statement->dyn_sqlda2) ? statement->dyn_sqlda2 : "gds__null^");
SET_SQLCODE;
}
//____________________________________________________________
//
// Generate a dynamic SQL statement.
//
static void gen_dyn_fetch( ACT action, int column)
{
DYN statement;
TEXT s[64];
statement = (DYN) action->act_object;
printa(column,
"SQLCODE := isc_embed_dsql_fetch (gds__status, %s, %d, %s %s);",
make_name(s, statement->dyn_cursor_name),
sw_sql_dialect,
REF_PAR,
(statement->dyn_sqlda) ? statement->dyn_sqlda : "gds__null^");
printa(column,
"if sqlcode <> 100 then sqlcode := gds__sqlcode (gds__status);");
}
//____________________________________________________________
//
// Generate code for an EXECUTE IMMEDIATE dynamic SQL statement.
//
static void gen_dyn_immediate( ACT action, int column)
{
DYN statement;
DBB database;
TEXT *transaction;
struct gpre_req *request, req_const;
statement = (DYN) action->act_object;
if (statement->dyn_trans) {
transaction = statement->dyn_trans;
request = &req_const;
request->req_trans = transaction;
}
else {
transaction = "gds__trans";
request = NULL;
}
if (sw_auto) {
printa(column, "if (%s = nil) then", transaction);
column += INDENT;
t_start_auto(action, request, status_vector(action), column + INDENT);
column -= INDENT;
}
database = statement->dyn_database;
printa(column,
(statement->dyn_sqlda2) ?
(TEXT*) "isc_embed_dsql_execute_immed2 (gds__status, %s, %s, %s(%s), %s, %d, %s %s, %s %s);"
:
(TEXT*) "isc_embed_dsql_execute_immed (gds__status, %s, %s, %s(%s), %s, %d, %s %s);",
database->dbb_name->sym_string, transaction, SIZEOF,
statement->dyn_string, statement->dyn_string, sw_sql_dialect,
REF_PAR,
(statement->dyn_sqlda) ? statement->dyn_sqlda : "gds__null^",
REF_PAR,
(statement->dyn_sqlda2) ? statement->dyn_sqlda2 : "gds__null^");
SET_SQLCODE;
}
//____________________________________________________________
//
// Generate a dynamic SQL statement.
//
static void gen_dyn_insert( ACT action, int column)
{
DYN statement;
TEXT s[64];
statement = (DYN) action->act_object;
printa(column,
"isc_embed_dsql_insert (gds__status, %s, %d, %s %s);",
make_name(s, statement->dyn_cursor_name),
sw_sql_dialect,
REF_PAR,
(statement->dyn_sqlda) ? statement->dyn_sqlda : "gds__null^");
SET_SQLCODE;
}
//____________________________________________________________
//
// Generate a dynamic SQL statement.
//
static void gen_dyn_open( ACT action, int column)
{
DYN statement;
TEXT *transaction, s[64];
struct gpre_req *request, req_const;
GPRE_NOD var_list;
int i;
statement = (DYN) action->act_object;
if (statement->dyn_trans) {
transaction = statement->dyn_trans;
request = &req_const;
request->req_trans = transaction;
}
else {
transaction = "gds__trans";
request = NULL;
}
if (sw_auto) {
printa(column, "if (%s = nil) then", transaction);
column += INDENT;
t_start_auto(action, request, status_vector(action), column + INDENT);
column -= INDENT;
}
make_name(s, statement->dyn_cursor_name);
if (var_list = statement->dyn_using) {
printa(column, "gds__sqlda.sqln = %d;", sw_dyn_using);
printa(column, "gds__sqlda.sqld = %d;", sw_dyn_using);
for (i = 0; i < var_list->nod_count; i++)
asgn_sqlda_from(reinterpret_cast<ref*>(var_list->nod_arg[i]), i, s, column);
}
printa(column,
(statement->dyn_sqlda2) ?
(TEXT*) "isc_embed_dsql_open2 (gds__status, %s, %s, %d, %s %s, %s %s);" :
(TEXT*) "isc_embed_dsql_open (gds__status, %s, %s, %d, %s %s);",
s,
transaction,
sw_sql_dialect,
REF_PAR,
(statement->dyn_sqlda) ? statement->dyn_sqlda : "gds__null^",
REF_PAR,
(statement->dyn_sqlda2) ? statement->dyn_sqlda2 : "gds__null^");
SET_SQLCODE;
}
//____________________________________________________________
//
// Generate a dynamic SQL statement.
//
static void gen_dyn_prepare( ACT action, int column)
{
DYN statement;
DBB database;
TEXT s[64], *transaction;
struct gpre_req *request, req_const;
if (statement->dyn_trans) {
transaction = statement->dyn_trans;
request = &req_const;
request->req_trans = transaction;
}
else {
transaction = "gds__trans";
request = NULL;
}
if (sw_auto) {
printa(column, "if (%s = nil) then", transaction);
column += INDENT;
t_start_auto(action, request, status_vector(action), column + INDENT);
column -= INDENT;
}
statement = (DYN) action->act_object;
database = statement->dyn_database;
printa(column,
"isc_embed_dsql_prepare (gds__status, %s, transaction, %s, %s(%s), %s, %d, %s %s);",
database->dbb_name->sym_string, transaction, make_name(s,
statement->
dyn_statement_name),
SIZEOF, statement->dyn_string, statement->dyn_string,
sw_sql_dialect, REF_PAR,
(statement->dyn_sqlda) ? statement->dyn_sqlda : "gds__null^");
SET_SQLCODE;
}
//____________________________________________________________
//
// Generate substitution text for END_MODIFY.
//
static void gen_emodify( ACT action, int column)
{
UPD modify;
REF reference, source;
GPRE_FLD field;
TEXT s1[20], s2[20];
modify = (UPD) action->act_object;
for (reference = modify->upd_port->por_references; reference;
reference = reference->ref_next) {
if (!(source = reference->ref_source))
continue;
field = reference->ref_field;
align(column);
ib_fprintf(out_file, "%s := %s;",
gen_name(s1, reference, TRUE), gen_name(s2, source, TRUE));
if (field->fld_array_info)
gen_get_or_put_slice(action, reference, FALSE, column);
}
gen_send(action, modify->upd_port, column);
}
//____________________________________________________________
//
// Generate substitution text for END_STORE.
//
static void gen_estore( ACT action, int column)
{
GPRE_REQ request;
request = action->act_request;
// if we did a store ... returning_values aka store2
// just wrap up pending error
if (request->req_type == REQ_store2) {
if (action->act_error || (action->act_flags & ACT_sql))
END;
return;
}
if (action->act_error)
column += INDENT;
gen_start(action, request->req_primary, column);
if (action->act_error || (action->act_flags & ACT_sql))
END;
}
//____________________________________________________________
//
// Generate definitions associated with a single request.
//
static void gen_endfor( ACT action, int column)
{
GPRE_REQ request;
request = action->act_request;
column += INDENT;
if (request->req_sync)
gen_send(action, request->req_sync, column);
gen_receive(action, column, request->req_primary);
END;
if (action->act_error || (action->act_flags & ACT_sql))
END;
}
//____________________________________________________________
//
// Generate substitution text for ERASE.
//
static void gen_erase( ACT action, int column)
{
UPD erase;
if (action->act_error || (action->act_flags & ACT_sql))
BEGIN;
erase = (UPD) action->act_object;
gen_send(action, erase->upd_port, column);
if (action->act_flags & ACT_sql)
END;
}
//____________________________________________________________
//
// Generate event parameter blocks for use
// with a particular call to gds__event_wait.
//
static SSHORT gen_event_block( ACT action)
{
GPRE_NOD init, list;
int ident;
init = (GPRE_NOD) action->act_object;
ident = CMP_next_ident();
init->nod_arg[2] = (GPRE_NOD) ident;
printa(INDENT, "gds__%da\t\t: ^char;\t\t(* event parameter block *)",
ident);
printa(INDENT, "gds__%db\t\t: ^char;\t\t(* result parameter block *)",
ident);
printa(INDENT,
"gds__%dl\t\t: %s;\t\t(* length of event parameter block *)",
ident, SHORT_DCL);
list = init->nod_arg[1];
return list->nod_count;
}
//____________________________________________________________
//
// Generate substitution text for EVENT_INIT.
//
static void gen_event_init( ACT action, int column)
{
GPRE_NOD init, event_list, *ptr, *end, node;
REF reference;
PAT args;
SSHORT count;
TEXT variable[20];
TEXT *pattern1 =
"gds__%N1l := GDS__EVENT_BLOCK_A (%RFgds__%N1a, %RFgds__%N1b, %N2, %RFgds__event_names%RE);";
TEXT *pattern2 = "%S1 (%V1, %RF%DH, gds__%N1l, gds__%N1a, gds__%N1b);";
TEXT *pattern3 = "%S2 (gds__events, gds__%N1l, gds__%N1a, gds__%N1b);";
if (action->act_error)
BEGIN;
BEGIN;
init = (GPRE_NOD) action->act_object;
event_list = init->nod_arg[1];
args.pat_database = (DBB) init->nod_arg[3];
args.pat_vector1 = status_vector(action);
args.pat_value1 = (int) init->nod_arg[2];
args.pat_value2 = (int) event_list->nod_count;
args.pat_string1 = GDS_EVENT_WAIT;
args.pat_string2 = GDS_EVENT_COUNTS;
// generate call to dynamically generate event blocks
for (ptr = event_list->nod_arg, count = 0, end =
ptr + event_list->nod_count; ptr < end; ptr++) {
count++;
node = *ptr;
if (node->nod_type == nod_field) {
reference = (REF) node->nod_arg[0];
gen_name(variable, reference, TRUE);
printa(column, "gds__event_names2[%d] := %s;", count, variable);
}
else
printa(column, "gds__event_names2[%d] := %s;", count,
node->nod_arg[0]);
printa(column, "gds__event_names[%d] := %s (gds__event_names2[%d]);",
count, ISC_BADDRESS, count);
}
PATTERN_expand(column, pattern1, &args);
// generate actual call to event_wait
PATTERN_expand(column, pattern2, &args);
// get change in event counts, copying event parameter block for reuse
PATTERN_expand(column, pattern3, &args);
if (action->act_error)
END;
SET_SQLCODE;
}
//____________________________________________________________
//
// Generate substitution text for EVENT_WAIT.
//
static void gen_event_wait( ACT action, int column)
{
PAT args;
GPRE_NOD event_init;
SYM event_name, stack_name;
DBB database;
LLS stack_ptr;
ACT event_action;
int ident;
TEXT s[64];
TEXT *pattern1 = "%S1 (%V1, %RF%DH, gds__%N1l, gds__%N1a, gds__%N1b);";
TEXT *pattern2 = "%S2 (gds__events, gds__%N1l, gds__%N1a, gds__%N1b);";
if (action->act_error)
BEGIN;
BEGIN;
event_name = (SYM) action->act_object;
// go through the stack of events, checking to see if the
// event has been initialized and getting the event identifier
ident = -1;
for (stack_ptr = events; stack_ptr; stack_ptr = stack_ptr->lls_next) {
event_action = (ACT) stack_ptr->lls_object;
event_init = (GPRE_NOD) event_action->act_object;
stack_name = (SYM) event_init->nod_arg[0];
if (!strcmp(event_name->sym_string, stack_name->sym_string)) {
ident = (int) event_init->nod_arg[2];
database = (DBB) event_init->nod_arg[3];
}
}
if (ident < 0) {
sprintf(s, "event handle \"%s\" not found", event_name->sym_string);
IBERROR(s);
return;
}
args.pat_database = database;
args.pat_vector1 = status_vector(action);
args.pat_value1 = (int) ident;
args.pat_string1 = GDS_EVENT_WAIT;
args.pat_string2 = GDS_EVENT_COUNTS;
// generate calls to wait on the event and to fill out the events array
PATTERN_expand(column, pattern1, &args);
PATTERN_expand(column, pattern2, &args);
if (action->act_error)
END;
SET_SQLCODE;
}
//____________________________________________________________
//
// Generate replacement text for the SQL FETCH statement. The
// epilog FETCH statement is handled by GEN_S_FETCH (generate
// stream fetch).
//
static void gen_fetch( ACT action, int column)
{
GPRE_REQ request;
GPRE_NOD var_list;
int i;
TEXT s[20];
request = action->act_request;
#ifdef SCROLLABLE_CURSORS
POR port;
REF reference;
VAL value;
TEXT* direction;
TEXT* offset;
if (port = request->req_aport) {
/* set up the reference to point to the correct value
in the linked list of values, and prepare for the
next FETCH statement if applicable */
for (reference = port->por_references; reference;
reference = reference->ref_next) {
value = reference->ref_values;
reference->ref_value = value->val_value;
reference->ref_values = value->val_next;
}
/* find the direction and offset parameters */
reference = port->por_references;
offset = reference->ref_value;
reference = reference->ref_next;
direction = reference->ref_value;
/* the direction in which the engine will scroll is sticky, so check to see
the last direction passed to the engine; if the direction is the same and
the offset is 1, then there is no need to pass the message; this prevents
extra packets and allows for batch fetches in either direction */
printa(column, "if (isc_%ddirection MOD 2 <> %s) or (%s <> 1) then",
request->req_ident, direction, offset);
column += INDENT;
BEGIN;
/* assign the direction and offset parameters to the appropriate message,
then send the message to the engine */
asgn_from(action, port->por_references, column);
gen_send(action, port, column);
printa(column, "isc_%ddirection := %s;", request->req_ident,
direction);
column -= INDENT;
END;
printa(column, "if SQLCODE = 0 then");
column += INDENT;
BEGIN;
}
#endif
if (request->req_sync) {
gen_send(action, request->req_sync, column);
printa(column, "if SQLCODE = 0 then");
column += INDENT;
BEGIN;
}
gen_receive(action, column, request->req_primary);
printa(column, "if SQLCODE = 0 then");
column += INDENT;
printa(column, "if %s <> 0 then", gen_name(s, request->req_eof, TRUE));
column += INDENT;
BEGIN;
if (var_list = (GPRE_NOD) action->act_object)
for (i = 0; i < var_list->nod_count; i++) {
align(column);
asgn_to(action, reinterpret_cast<ref*>(var_list->nod_arg[i]), column);
}
END;
printa(column - INDENT, "else");
printa(column, "SQLCODE := 100;");
if (request->req_sync) {
column -= INDENT;
END;
}
#ifdef SCROLLABLE_CURSORS
if (port) {
column -= INDENT;
END;
}
#endif
}
//____________________________________________________________
//
// Generate substitution text for FINISH
//
static void gen_finish( ACT action, int column)
{
DBB db;
RDY ready;
db = NULL;
if (sw_auto || ((action->act_flags & ACT_sql) &&
(action->act_type != ACT_disconnect))) {
printa(column, "if gds__trans <> nil");
printa(column + 4, "then GDS__%s_TRANSACTION (%s, gds__trans);",
(action->act_type != ACT_rfinish) ? "COMMIT" : "ROLLBACK",
status_vector(action));
}
// Got rid of tests of gds__trans <> nil which were causing the skipping
// of trying to detach the databases. Related to bug#935. mao 6/22/89
for (ready = (RDY) action->act_object; ready; ready = ready->rdy_next) {
db = ready->rdy_database;
printa(column, "GDS__DETACH_DATABASE (%s, %s);",
status_vector(action), db->dbb_name->sym_string);
}
if (!db)
for (db = isc_databases; db; db = db->dbb_next) {
if ((action->act_error || (action->act_flags & ACT_sql))
&& (db != isc_databases)) printa(column,
"if (%s <> nil) and (gds__status[2] = 0) then",
db->dbb_name->sym_string);
else
printa(column, "if %s <> nil then", db->dbb_name->sym_string);
printa(column + INDENT, "GDS__DETACH_DATABASE (%s, %s);",
status_vector(action), db->dbb_name->sym_string);
}
SET_SQLCODE;
}
//____________________________________________________________
//
// Generate substitution text for FOR statement.
//
static void gen_for( ACT action, int column)
{
POR port;
GPRE_REQ request;
TEXT s[20];
REF reference;
gen_s_start(action, column);
request = action->act_request;
if (action->act_error || (action->act_flags & ACT_sql))
printa(column, "if gds__status[2] = 0 then begin");
gen_receive(action, column, request->req_primary);
if (action->act_error || (action->act_flags & ACT_sql))
printa(column, "while (%s <> 0) and (gds__status[2] = 0) do",
gen_name(s, request->req_eof, TRUE));
else
printa(column, "while %s <> 0 do",
gen_name(s, request->req_eof, TRUE));
column += INDENT;
BEGIN;
if (port = action->act_request->req_primary)
for (reference = port->por_references; reference;
reference =
reference->ref_next) if (reference->ref_field->
fld_array_info)
gen_get_or_put_slice(action, reference, TRUE, column);
}
#ifdef PYXIS
//____________________________________________________________
//
// Generate code for a form interaction.
//
static void gen_form_display( ACT action, int column)
{
FINT display;
GPRE_REQ request;
REF reference, master;
POR port;
DBB dbb;
TEXT s[32], *status, out[16];
int code;
display = (FINT) action->act_object;
request = display->fint_request;
dbb = request->req_database;
port = request->req_ports;
status = (action->act_error) ? "gds__status" : "gds__null^";
// Initialize field options
for (reference = port->por_references; reference;
reference = reference->ref_next)
if ((master = reference->ref_master) &&
(code = CMP_display_code(display, master)) >= 0)
printa(column, "%s := %d;", gen_name(s, reference, TRUE), code);
if (display->fint_flags & FINT_no_wait)
strcpy(out, "0");
else
sprintf(out, "gds__%d", port->por_ident);
printa(column,
"pyxis__drive_form (%s, %s, %s, gds__window, %s, gds__%d, %s);",
status, dbb->dbb_name->sym_string, request->req_trans,
request->req_handle, port->por_ident, out);
}
#endif
#ifdef PYXIS
//____________________________________________________________
//
// Generate code for a form block.
//
static void gen_form_end( ACT action, int column)
{
printa(column, "pyxis__pop_window (gds__window);");
}
#endif
#ifdef PYXIS
//____________________________________________________________
//
// Generate code for a form block.
//
static void gen_form_for( ACT action, int column)
{
GPRE_REQ request;
FORM form;
TEXT *status;
DBB dbb;
int indent;
indent = column + INDENT;
request = action->act_request;
form = request->req_form;
dbb = request->req_database;
status = status_vector(action);
// Get database attach and transaction started
if (sw_auto) {
printa(column, "if (gds__trans = nil) then");
t_start_auto(action, 0, status_vector(action), indent);
}
// Get form loaded first
printa(column, "if %s = nil then", request->req_form_handle);
align(indent);
ib_fprintf(out_file, "pyxis__load_form (%s, %s, %s, %s, %d, '%s');",
status,
dbb->dbb_name->sym_string,
request->req_trans,
request->req_form_handle,
strlen(form->form_name->sym_string),
form->form_name->sym_string);
// Get map compiled
printa(column, "if %s = nil then", request->req_handle);
printa(indent, "pyxis__compile_map (%s, %s, %s, %d, gds__%d);",
status,
request->req_form_handle,
request->req_handle, request->req_length, request->req_ident);
// Reset form to known state
printa(column, "pyxis__reset_form (%s, %s);",
status, request->req_handle);
}
#endif
//____________________________________________________________
//
// Generate a call to gds__get_slice
// or gds__put_slice for an array.
//
static void gen_get_or_put_slice(
ACT action,
REF reference, BOOLEAN get, int column)
{
PAT args;
TEXT s1[25], s2[10], s3[10], s4[10];
TEXT *pattern1 =
"GDS__GET_SLICE (%V1, %RF%DH%RE, %RF%S1%RE, %S2, %N1, %S3, %N2, %S4, %L1, %S5, %S6);\n";
TEXT *pattern2 =
"GDS__PUT_SLICE (%V1, %RF%DH%RE, %RF%S1%RE, %S2, %N1, %S3, %N2, %S4, %L1, %S5);\n";
if (!(reference->ref_flags & REF_fetch_array))
return;
args.pat_vector1 = status_vector(action); /* status vector */
args.pat_database = action->act_request->req_database; /* database handle */
args.pat_string1 = action->act_request->req_trans; /* transaction handle */
gen_name(s1, reference, TRUE); /* blob handle */
args.pat_string2 = s1;
args.pat_value1 = reference->ref_sdl_length; /* slice descr. length */
sprintf(s2, "gds__%d", reference->ref_sdl_ident); /* slice description */
args.pat_string3 = s2;
args.pat_value2 = 0; /* parameter length */
sprintf(s3, "0"); /* parameter */
args.pat_string4 = s3;
args.pat_long1 = reference->ref_field->fld_array_info->ary_size;
/* slice size */
if (action->act_flags & ACT_sql) {
args.pat_string5 = reference->ref_value;
}
else {
sprintf(s4, "gds__%d",
reference->ref_field->fld_array_info->ary_ident);
args.pat_string5 = s4; /* array name */
}
args.pat_string6 = "gds__array_length"; /* return length */
if (get)
PATTERN_expand(column, pattern1, &args);
else
PATTERN_expand(column, pattern2, &args);
}
//____________________________________________________________
//
// Generate the code to do a get segment.
//
static void gen_get_segment( ACT action, int column)
{
BLB blob;
PAT args;
REF into;
TEXT *pattern1 =
"%IFgds__status[2] := %ENGDS__GET_SEGMENT (%V1, %BH, %I1, %S1 (%I2), %RF%I2);";
if (action->act_error && (action->act_type != ACT_blob_for))
BEGIN;
if (action->act_flags & ACT_sql)
blob = (BLB) action->act_request->req_blobs;
else
blob = (BLB) action->act_object;
args.pat_blob = blob;
args.pat_vector1 = status_vector(action);
args.pat_condition = TRUE;
args.pat_ident1 = blob->blb_len_ident;
args.pat_ident2 = blob->blb_buff_ident;
args.pat_string1 = SIZEOF;
PATTERN_expand(column, pattern1, &args);
if (action->act_flags & ACT_sql) {
into = action->act_object;
SET_SQLCODE;
printa(column, "if (SQLCODE = 0) or (SQLCODE = 101) then");
column += INDENT;
BEGIN;
align(column);
ib_fprintf(out_file, "gds__ftof (gds__%d, gds__%d, %s, gds__%d);",
blob->blb_buff_ident, blob->blb_len_ident,
into->ref_value, blob->blb_len_ident);
if (into->ref_null_value) {
align(column);
ib_fprintf(out_file, "%s := gds__%d;",
into->ref_null_value, blob->blb_len_ident);
}
END;
column -= INDENT;
}
}
#ifdef PYXIS
//____________________________________________________________
//
// Generate end of block for PUT_ITEM and FOR_ITEM.
//
static void gen_item_end( ACT action, int column)
{
GPRE_REQ request;
REF reference;
POR port;
DBB dbb;
TEXT s[32], *status, index[16];
request = action->act_request;
if (request->req_type == REQ_menu) {
gen_menu_item_end(action, column);
return;
}
status = (action->act_error) ? "gds__status" : "gds__null^";
if (action->act_pair->act_type == ACT_item_for) {
column += INDENT;
gen_name(index, request->req_index, TRUE);
printa(column, "%s := %s + 1;", index, index);
align(column);
ib_fprintf(out_file,
"pyxis__fetch (%s, %s, %s, %s, gds__%d);",
status,
request->req_database->dbb_name->sym_string,
request->req_trans,
request->req_handle, request->req_ports->por_ident);
if (action->act_error)
ENDS;
else
END;
return;
}
dbb = request->req_database;
port = request->req_ports;
// Initialize field options
for (reference = port->por_references; reference;
reference = reference->ref_next) if (reference->ref_master)
printa(column, "%s := %d;", gen_name(s, reference, TRUE),
PYXIS_OPT_DISPLAY);
align(column);
ib_fprintf(out_file,
"pyxis__insert (%s, %s, %s, %s, gds__%d);",
status,
dbb->dbb_name->sym_string,
request->req_trans, request->req_handle, port->por_ident);
}
#endif
#ifdef PYXIS
//____________________________________________________________
//
// Generate insert text for FOR_ITEM and PUT_ITEM.
//
static void gen_item_for( ACT action, int column)
{
GPRE_REQ request, parent;
FORM form;
TEXT *status, index[30];
request = action->act_request;
if (request->req_type == REQ_menu) {
gen_menu_item_for(action, column);
return;
}
column += INDENT;
form = request->req_form;
parent = form->form_parent;
status = (action->act_error) ? "gds__status" : "gds__null^";
// Get map compiled
printa(column, "if %s = nil then", request->req_handle);
printa(column + INDENT,
"pyxis__compile_sub_map (%s, %s, %s, %d, gds__%d);", status,
parent->req_handle, request->req_handle, request->req_length,
request->req_ident);
if (action->act_type != ACT_item_for)
return;
// Build stuff for item loop
gen_name(index, request->req_index, TRUE);
printa(column, "%s := 1;", index);
align(column);
ib_fprintf(out_file,
"pyxis__fetch (%s, %s, %s, %s, gds__%d);",
status,
request->req_database->dbb_name->sym_string,
request->req_trans,
request->req_handle, request->req_ports->por_ident);
printa(column, "while (%s <> 0) do", index);
column += INDENT;
BEGIN;
}
#endif
//____________________________________________________________
//
// Generate text to compile and start a stream. This is
// used both by START_STREAM and FOR
//
static void gen_loop( ACT action, int column)
{
GPRE_REQ request;
POR port;
TEXT name[20];
gen_s_start(action, column);
request = action->act_request;
port = request->req_primary;
printa(column, "if SQLCODE = 0 then");
column += INDENT;
BEGIN;
gen_receive(action, column, port);
gen_name(name, port->por_references, TRUE);
printa(column, "if (SQLCODE = 0) and (%s = 0)", name);
printa(column + INDENT, "then SQLCODE := 100;");
END;
column -= INDENT;
}
#ifdef PYXIS
//____________________________________________________________
//
//
static void gen_menu( ACT action, int column)
{
GPRE_REQ request;
request = action->act_request;
printa(column, "case pyxis__menu (gds__window, %s, %d, gds__%d) of",
request->req_handle, request->req_length, request->req_ident);
}
#endif
#ifdef PYXIS
//____________________________________________________________
//
// Generate code for a menu interaction.
//
static void gen_menu_display( ACT action, int column)
{
MENU menu;
GPRE_REQ request, display_request;
request = action->act_request;
display_request = (GPRE_REQ) action->act_object;
menu = NULL;
for (action = request->req_actions; action; action = action->act_next)
if (action->act_type == ACT_menu_for) {
menu = (MENU) action->act_object;
break;
}
printa(column,
"pyxis__drive_menu (gds__window, %s, %d, gds__%d, gds__%dl, gds__%d,",
request->req_handle,
display_request->req_length,
display_request->req_ident, menu->menu_title, menu->menu_title);
printa(column,
"\n\t\t\tgds__%d, gds__%dl, gds__%d, gds__%d);",
menu->menu_terminator,
menu->menu_entree_entree,
menu->menu_entree_entree, menu->menu_entree_value);
}
#endif
#ifdef PYXIS
//____________________________________________________________
//
//
static void gen_menu_entree( ACT action, int column)
{
printa(column, "%d:", action->act_count);
}
#endif
#ifdef PYXIS
//____________________________________________________________
//
//
// Generate code for a reference to a menu or entree attribute.
static void gen_menu_entree_att( ACT action, int column)
{
MENU menu;
SSHORT ident, length;
menu = (MENU) action->act_object;
length = FALSE;
switch (action->act_type) {
case ACT_entree_text:
ident = menu->menu_entree_entree;
break;
case ACT_entree_length:
ident = menu->menu_entree_entree;
length = TRUE;
break;
case ACT_entree_value:
ident = menu->menu_entree_value;
break;
case ACT_title_text:
ident = menu->menu_title;
break;
case ACT_title_length:
ident = menu->menu_title;
length = TRUE;
break;
case ACT_terminator:
ident = menu->menu_terminator;
break;
default:
ident = -1;
break;
}
if (length)
printa(column, "gds__%dl", ident);
else
printa(column, "gds__%d", ident);
}
#endif
#ifdef PYXIS
//____________________________________________________________
//
// Generate code for a menu block.
//
static void gen_menu_for( ACT action, int column)
{
GPRE_REQ request;
request = action->act_request;
// Get menu created
if (!(request->req_flags & REQ_exp_hand))
printa(column, "pyxis__initialize_menu (%s);", request->req_handle);
}
#endif
#ifdef PYXIS
//____________________________________________________________
//
// Generate end of block for PUT_ITEM and FOR_ITEM
// for a dynamic menu.
//
static void gen_menu_item_end( ACT action, int column)
{
GPRE_REQ request;
ENTREE entree;
entree = (ENTREE) action->act_pair->act_object;
request = entree->entree_request;
if (action->act_pair->act_type == ACT_item_for) {
align(column);
printa(column,
"pyxis__get_entree (%s, gds__%dl, gds__%d, gds__%d, gds__%d);",
request->req_handle, entree->entree_entree,
entree->entree_entree, entree->entree_value,
entree->entree_end);
column += INDENT;
END;
return;
}
align(column);
ib_fprintf(out_file,
"pyxis__put_entree (%s, gds__%dl, gds__%d, gds__%d);",
request->req_handle,
entree->entree_entree,
entree->entree_entree, entree->entree_value);
}
#endif
#ifdef PYXIS
//____________________________________________________________
//
// Generate insert text for FOR_ITEM and PUT_ITEM
// for a dynamic menu.
//
static void gen_menu_item_for( ACT action, int column)
{
ENTREE entree;
GPRE_REQ request;
if (action->act_type != ACT_item_for)
return;
// Build stuff for item loop
entree = (ENTREE) action->act_object;
request = entree->entree_request;
align(column);
printa(column,
"pyxis__get_entree (%s, gds__%dl, gds__%d, gds__%d, gds__%d);",
request->req_handle, entree->entree_entree, entree->entree_entree,
entree->entree_value, entree->entree_end);
printa(column, "while (gds__%d = 0) do", entree->entree_end);
column += INDENT;
BEGIN;
}
#endif
#ifdef PYXIS
//____________________________________________________________
//
// Generate definitions associated with a dynamic menu request.
//
static void gen_menu_request( GPRE_REQ request, int column)
{
ACT action;
MENU menu;
ENTREE entree;
menu = NULL;
entree = NULL;
for (action = request->req_actions; action; action = action->act_next) {
if (action->act_type == ACT_menu_for) {
menu = (MENU) action->act_object;
break;
}
else if ((action->act_type == ACT_item_for)
|| (action->act_type == ACT_item_put)) {
entree = (ENTREE) action->act_object;
break;
}
}
if (menu) {
menu->menu_title = CMP_next_ident();
menu->menu_terminator = CMP_next_ident();
menu->menu_entree_value = CMP_next_ident();
menu->menu_entree_entree = CMP_next_ident();
printa(column, "gds__%dl\t: %s;\t\t(* TITLE_LENGTH *)",
menu->menu_title, SHORT_DCL);
printa(column, "gds__%d\t: %s [1..81] of char;\t\t(* TITLE_TEXT *)",
menu->menu_title, PACKED_ARRAY);
printa(column, "gds__%d\t: %s;\t\t(* TERMINATOR *)",
menu->menu_terminator, SHORT_DCL);
printa(column, "gds__%dl\t: %s;\t\t(* ENTREE_LENGTH *)",
menu->menu_entree_entree, SHORT_DCL);
printa(column, "gds__%d\t: %s [1..81] of char;\t\t(* ENTREE_TEXT *)",
menu->menu_entree_entree, PACKED_ARRAY);
printa(column, "gds__%d\t: %s;\t\t(* ENTREE_VALUE *)",
menu->menu_entree_value, LONG_DCL);
}
if (entree) {
entree->entree_entree = CMP_next_ident();
entree->entree_value = CMP_next_ident();
entree->entree_end = CMP_next_ident();
printa(column, "gds__%dl\t: %s;\t\t(* ENTREE_LENGTH *)",
entree->entree_entree, SHORT_DCL);
printa(column, "gds__%d\t: %s [1..81] of char;\t\t(* ENTREE_TEXT *)",
entree->entree_entree, PACKED_ARRAY);
printa(column, "gds__%d\t: %s;\t\t(* ENTREE_VALUE *)",
entree->entree_value, LONG_DCL);
printa(column, "gds__%d\t: %s;\t\t(* *)",
entree->entree_end, SHORT_DCL);
}
}
#endif
//____________________________________________________________
//
// Generate a name for a reference. Name is constructed from
// port and parameter idents.
//
static TEXT *gen_name( TEXT * string, REF reference, BOOLEAN as_blob)
{
if (reference->ref_field->fld_array_info && !as_blob)
sprintf(string, "gds__%d",
reference->ref_field->fld_array_info->ary_ident);
else
sprintf(string, "gds__%d.gds__%d",
reference->ref_port->por_ident, reference->ref_ident);
return string;
}
//____________________________________________________________
//
// Generate a block to handle errors.
//
static void gen_on_error( ACT action, USHORT column)
{
ACT err_action;
err_action = (ACT) action->act_object;
if ((err_action->act_type == ACT_get_segment) ||
(err_action->act_type == ACT_put_segment) ||
(err_action->act_type == ACT_endblob))
printa(column,
"if (gds__status [2] <> 0) and (gds__status[2] <> gds__segment) and (gds__status[2] <> gds__segstr_eof) then");
else
printa(column, "if (gds__status [2] <> 0) then");
column += INDENT;
BEGIN;
}
//____________________________________________________________
//
// Generate code for an EXECUTE PROCEDURE.
//
static void gen_procedure( ACT action, int column)
{
PAT args;
TEXT *pattern;
GPRE_REQ request;
POR in_port, out_port;
DBB dbb;
column += INDENT;
request = action->act_request;
in_port = request->req_vport;
out_port = request->req_primary;
dbb = request->req_database;
args.pat_database = dbb;
args.pat_request = action->act_request;
args.pat_vector1 = status_vector(action);
args.pat_request = request;
args.pat_port = in_port;
args.pat_port2 = out_port;
if (in_port && in_port->por_length)
pattern =
"isc_transact_request (%V1, %RF%DH%RE, %RF%RT%RE, %VF%RS%VE, %RI, %VF%PL%VE, %RF%PI%RE, %VF%QL%VE, %RF%QI%RE);";
else
pattern =
"isc_transact_request (%V1, %RF%DH%RE, %RF%RT%RE, %VF%RS%VE, %RI, %VF0%VE, 0, %VF%QL%VE, %RF%QI%RE);";
// Get database attach and transaction started
if (sw_auto)
t_start_auto(action, 0, status_vector(action), column);
// Move in input values
asgn_from(action, request->req_values, column);
// Execute the procedure
PATTERN_expand(column, pattern, &args);
SET_SQLCODE;
printa(column, "if SQLCODE = 0 then");
column += INDENT;
BEGIN;
// Move out output values
asgn_to_proc(request->req_references, column);
END;
}
//____________________________________________________________
//
// Generate the code to do a put segment.
//
static void gen_put_segment( ACT action, int column)
{
BLB blob;
PAT args;
REF from;
TEXT *pattern1 =
"%IFgds__status[2] := %ENGDS__PUT_SEGMENT (%V1, %BH, %I1, %I2);";
if (!action->act_error)
BEGIN;
if (action->act_error || (action->act_flags & ACT_sql))
BEGIN;
if (action->act_flags & ACT_sql) {
blob = (BLB) action->act_request->req_blobs;
from = action->act_object;
align(column);
ib_fprintf(out_file, "gds__%d := %s;",
blob->blb_len_ident, from->ref_null_value);
align(column);
ib_fprintf(out_file, "gds__ftof (%s, gds__%d, gds__%d, gds__%d);",
from->ref_value, blob->blb_len_ident,
blob->blb_buff_ident, blob->blb_len_ident);
}
else
blob = (BLB) action->act_object;
args.pat_blob = blob;
args.pat_vector1 = status_vector(action);
args.pat_condition = TRUE;
args.pat_ident1 = blob->blb_len_ident;
args.pat_ident2 = blob->blb_buff_ident;
PATTERN_expand(column, pattern1, &args);
SET_SQLCODE;
if (action->act_flags & ACT_sql)
END;
}
//____________________________________________________________
//
// Generate BLR in raw, numeric form. Ughly but dense.
//
static void gen_raw( UCHAR * blr, int request_length, int column)
{
UCHAR *end, c;
TEXT *p, *limit, buffer[80];
p = buffer;
limit = buffer + 60;
for (end = blr + request_length - 1; blr <= end; blr++) {
c = *blr;
if ((c >= 'A' && c <= 'Z') || c == '$' || c == '_')
sprintf(p, "'%c'", c);
else
sprintf(p, "chr(%d)", c);
while (*p)
p++;
if (blr != end)
*p++ = ',';
if (p < limit)
continue;
*p = 0;
printa(INDENT, buffer);
p = buffer;
}
*p = 0;
printa(INDENT, buffer);
}
//____________________________________________________________
//
// Generate substitution text for READY
//
static void gen_ready( ACT action, int column)
{
RDY ready;
DBB db;
TEXT *filename, *vector;
vector = status_vector(action);
for (ready = (RDY) action->act_object; ready; ready = ready->rdy_next) {
db = ready->rdy_database;
if (!(filename = ready->rdy_filename))
filename = db->dbb_runtime;
if ((action->act_error || (action->act_flags & ACT_sql)) &&
ready != (RDY) action->act_object)
printa(column, "if (gds__status[2] = 0) then begin");
make_ready(db, filename, vector, column, ready->rdy_request);
if ((action->act_error || (action->act_flags & ACT_sql)) &&
ready != (RDY) action->act_object)
END;
}
SET_SQLCODE;
}
//____________________________________________________________
//
// Generate receive call for a port.
//
static void gen_receive( ACT action, int column, POR port)
{
GPRE_REQ request;
align(column);
request = action->act_request;
ib_fprintf(out_file, "GDS__RECEIVE (%s, %s, %d, %d, %sgds__%d, %s);",
status_vector(action),
request->req_handle,
port->por_msg_number,
port->por_length,
REF_PAR, port->por_ident, request->req_request_level);
SET_SQLCODE;
}
//____________________________________________________________
//
// Generate substitution text for RELEASE_REQUESTS
// For active databases, call gds__release_request.
// for all others, just zero the handle. For the
// release request calls, ignore error returns, which
// are likely if the request was compiled on a database
// which has been released and re-readied. If there is
// a serious error, it will be caught on the next statement.
//
static void gen_release( ACT action, int column)
{
DBB db, exp_db;
GPRE_REQ request;
exp_db = (DBB) action->act_object;
for (request = requests; request; request = request->req_next) {
db = request->req_database;
if (exp_db && db != exp_db)
continue;
if (!(request->req_flags & REQ_exp_hand)) {
printa(column, "if %s <> NIL then", db->dbb_name->sym_string);
printa(column + INDENT, "gds__release_request (gds__status, %s);",
request->req_handle);
printa(column, "%s := NIL;", request->req_handle);
}
}
}
//____________________________________________________________
//
// Generate definitions associated with a single request.
//
static void gen_request( GPRE_REQ request, int column)
{
BLB blob;
POR port;
TEXT *sw_volatile, *string_type;
REF reference;
// generate request handle, blob handles, and ports
sw_volatile = FB_DP_VOLATILE;
printa(column, " ");
if (!
(request->
req_flags & (REQ_exp_hand
#ifdef PYXIS
| REQ_menu_for_item
#endif
| REQ_sql_blob_open |
REQ_sql_blob_create)) && request->req_type != REQ_slice
&& request->req_type != REQ_procedure)
printa(column, "%s\t: %s gds__handle := nil;\t\t(* request handle *)",
request->req_handle, sw_volatile);
if (request->req_flags & (REQ_sql_blob_open | REQ_sql_blob_create))
printa(column,
"gds__%ds\t: %s gds__handle := nil;\t\t(* SQL statement handle *)",
request->req_ident, sw_volatile);
// generate actual BLR string
if (request->req_length) {
printa(column, " ");
if (request->req_flags & REQ_sql_cursor)
printa(column,
"gds__%ds\t: %s gds__handle := nil;\t\t(* SQL statement handle *)",
request->req_ident, sw_volatile);
#ifdef SCROLLABLE_CURSORS
if (request->req_flags & REQ_scroll)
printa(column,
"gds__%ddirection\t: %s := 0;\t\t(* last direction sent to engine *)",
request->req_ident, SHORT_DCL);
#endif
printa(column, "gds__%dl\t: %s := %d;\t\t(* request length *)",
request->req_ident, SHORT_DCL, request->req_length);
printa(column, "gds__%d\t: %s [1..%d] of char := %s",
request->req_ident, PACKED_ARRAY, request->req_length,
OPEN_BRACKET);
string_type = "BLR";
if (sw_raw) {
gen_raw(request->req_blr, request->req_length, column);
switch (request->req_type) {
case REQ_create_database:
case REQ_ready:
string_type = "DPB";
break;
case REQ_ddl:
string_type = "DYN";
break;
#ifdef PYXIS
case REQ_form:
string_type = "form map";
break;
case REQ_menu:
string_type = "menu";
break;
#endif
case REQ_slice:
string_type = "SDL";
break;
default:
string_type = "BLR";
break;
}
}
else
switch (request->req_type) {
case REQ_create_database:
case REQ_ready:
string_type = "DPB";
if (PRETTY_print_cdb(reinterpret_cast<char*>(request->req_blr),
reinterpret_cast<int(*)()>(gen_blr), 0, 1))
IBERROR("internal error during parameter generation");
break;
case REQ_ddl:
string_type = "DYN";
if (PRETTY_print_dyn(reinterpret_cast<char*>(request->req_blr),
reinterpret_cast<int(*)()>(gen_blr), 0, 1))
IBERROR("internal error during dynamic DDL generation");
break;
#ifdef PYXIS
case REQ_form:
string_type = "form map";
if (PRETTY_print_form_map(reinterpret_cast<char*>(request->req_blr),
reinterpret_cast<int(*)()>(gen_blr), 0, 1))
IBERROR("internal error during form map generation");
break;
case REQ_menu:
string_type = "menu";
if (PRETTY_print_menu(reinterpret_cast<char*>(request->req_blr),
reinterpret_cast<int(*)()>(gen_blr), 0, 1))
IBERROR("internal error during menu generation");
break;
#endif
case REQ_slice:
string_type = "SDL";
if (PRETTY_print_sdl(reinterpret_cast<char*>(request->req_blr),
reinterpret_cast<int(*)()>(gen_blr), 0, 1))
IBERROR("internal error during SDL generation");
break;
default:
string_type = "BLR";
if (gds__print_blr(request->req_blr,
reinterpret_cast<void(*)()>(gen_blr), 0, 1))
IBERROR("internal error during BLR generation");
break;
}
printa(column, "%s;\t(* end of %s string for request gds__%d *)\n",
CLOSE_BRACKET, string_type, request->req_ident);
}
// Print out slice description language if there are arrays associated with request
for (port = request->req_ports; port; port = port->por_next)
for (reference = port->por_references; reference;
reference = reference->ref_next) if (reference->ref_sdl) {
printa(column, "gds__%d\t: %s [1..%d] of char := %s",
reference->ref_sdl_ident, PACKED_ARRAY,
reference->ref_sdl_length, OPEN_BRACKET);
if (sw_raw)
gen_raw(reinterpret_cast<UCHAR*>(reference->ref_sdl), reference->ref_sdl_length,
column);
else if (PRETTY_print_sdl(reference->ref_sdl,
reinterpret_cast<int(*)()>(gen_blr),
0, 1))
IBERROR("internal error during SDL generation");
printa(column, "%s; \t(* end of SDL string for gds__%d *)\n",
CLOSE_BRACKET, reference->ref_sdl_ident);
}
// Print out any blob parameter blocks required
for (blob = request->req_blobs; blob; blob = blob->blb_next)
if (blob->blb_bpb_length) {
printa(column, "gds__%d\t: %s [1..%d] of char := %s",
blob->blb_bpb_ident,
PACKED_ARRAY, blob->blb_bpb_length, OPEN_BRACKET);
gen_raw(blob->blb_bpb, blob->blb_bpb_length, column);
printa(column, "%s;\n", CLOSE_BRACKET);
}
#ifdef PYXIS
if (request->req_type == REQ_menu)
gen_menu_request(request, column);
#endif
// If this is GET_SLICE/PUT_SLICE, allocate some variables
if (request->req_type == REQ_slice) {
printa(column, "gds__%dv\t: array [1..%d] of %s;",
request->req_ident, MAX(request->req_slice->slc_parameters, 1),
LONG_DCL);
printa(column, "gds__%ds\t: %s;", request->req_ident, LONG_DCL);
}
}
//____________________________________________________________
//
// Generate receive call for a port
// in a store2 statement.
//
static void gen_return_value( ACT action, int column)
{
UPD update;
REF reference;
GPRE_REQ request;
request = action->act_request;
if (action->act_pair->act_error)
column += INDENT;
gen_start(action, request->req_primary, column);
update = (UPD) action->act_object;
reference = update->upd_references;
gen_receive(action, column, reference->ref_port);
}
//____________________________________________________________
//
// Process routine head. If there are requests in the
// routine, insert local definitions.
//
static void gen_routine( ACT action, int column)
{
BLB blob;
GPRE_REQ request;
POR port;
column += INDENT;
for (request = (GPRE_REQ) action->act_object; request;
request = request->req_routine) {
for (port = request->req_ports; port; port = port->por_next) {
printa(column - INDENT, "type");
make_port(port, column);
}
/* Only write a var reserved word if there are variables which will be
associated with a var section. Fix for bug#809. mao 03/22/89 */
if (request->req_ports) {
printa(column - INDENT, "var");
}
for (port = request->req_ports; port; port = port->por_next)
printa(column, "gds__%d\t: gds__%dt;\t\t\t(* message *)",
port->por_ident, port->por_ident);
for (blob = request->req_blobs; blob; blob = blob->blb_next) {
printa(column, "gds__%d\t: gds__handle;\t\t\t(* blob handle *)",
blob->blb_ident);
printa(column,
"gds__%d\t: %s [1 .. %d] of char;\t(* blob segment *)",
blob->blb_buff_ident, PACKED_ARRAY, blob->blb_seg_length);
printa(column, "gds__%d\t: %s;\t\t\t(* segment length *)",
blob->blb_len_ident, SHORT_DCL);
}
}
column -= INDENT;
}
//____________________________________________________________
//
// Generate substitution text for END_STREAM.
//
static void gen_s_end( ACT action, int column)
{
GPRE_REQ request;
if (action->act_error)
BEGIN;
request = action->act_request;
if (action->act_type == ACT_close)
column = gen_cursor_close(action, request, column);
printa(column, "GDS__UNWIND_REQUEST (%s, %s, %s);",
status_vector(action),
request->req_handle, request->req_request_level);
if (action->act_type == ACT_close) {
END;
column -= INDENT;
ENDS;
column -= INDENT;
}
SET_SQLCODE;
}
//____________________________________________________________
//
// Generate substitution text for FETCH.
//
static void gen_s_fetch( ACT action, int column)
{
GPRE_REQ request;
request = action->act_request;
if (request->req_sync)
gen_send(action, request->req_sync, column);
gen_receive(action, column, request->req_primary);
if (!action->act_pair && !action->act_error)
END;
}
//____________________________________________________________
//
// Generate text to compile and start a stream. This is
// used both by START_STREAM and FOR
//
static void gen_s_start( ACT action, int column)
{
GPRE_REQ request;
POR port;
request = action->act_request;
gen_compile(action, column);
if (action->act_type == ACT_open)
column = gen_cursor_open(action, request, column);
if (port = request->req_vport)
asgn_from(action, port->por_references, column);
if (action->act_error || (action->act_flags & ACT_sql)) {
make_ok_test(action, request, column);
column += INDENT;
}
gen_start(action, port, column);
if (action->act_error || (action->act_flags & ACT_sql))
column -= INDENT;
if (action->act_type == ACT_open) {
END;
column -= INDENT;
END;
column -= INDENT;
ENDS;
column -= INDENT;
}
SET_SQLCODE;
}
//____________________________________________________________
//
// Substitute for a segment, segment length, or blob handle.
//
static void gen_segment( ACT action, int column)
{
BLB blob;
blob = (BLB) action->act_object;
printa(column, "gds__%d",
(action->act_type == ACT_segment) ? blob->blb_buff_ident :
(action->act_type == ACT_segment_length) ? blob->blb_len_ident :
blob->blb_ident);
}
//____________________________________________________________
//
//
static void gen_select( ACT action, int column)
{
GPRE_REQ request;
POR port;
GPRE_NOD var_list;
int i;
TEXT name[20];
request = action->act_request;
port = request->req_primary;
gen_name(name, request->req_eof, TRUE);
gen_s_start(action, column);
BEGIN;
gen_receive(action, column, port);
printa(column, "if SQLCODE = 0 then", name);
column += INDENT;
printa(column, "if %s <> 0 then", name);
column += INDENT;
BEGIN;
if (var_list = (GPRE_NOD) action->act_object)
for (i = 0; i < var_list->nod_count; i++) {
align(column);
asgn_to(action, reinterpret_cast<REF>(var_list->nod_arg[i]), column);
}
if (request->req_database->dbb_flags & DBB_v3) {
gen_receive(action, column, port);
printa(column, "if (SQLCODE = 0) AND (%s <> 0) then", name);
printa(column + INDENT, "SQLCODE := -1");
END;
}
printa(column - INDENT, "else");
printa(column, "SQLCODE := 100;");
column -= INDENT;
ENDS;
}
//____________________________________________________________
//
// Generate a send or receive call for a port.
//
static void gen_send( ACT action, POR port, int column)
{
GPRE_REQ request;
request = action->act_request;
align(column);
ib_fprintf(out_file, "GDS__SEND (%s, %s, %d, %d, gds__%d, %s);",
status_vector(action),
request->req_handle,
port->por_msg_number,
port->por_length, port->por_ident, request->req_request_level);
SET_SQLCODE;
}
//____________________________________________________________
//
// Generate support for get/put slice statement.
//
static void gen_slice( ACT action, int column)
{
GPRE_REQ request, parent_request;
REF reference, upper, lower;
SLC slice;
PAT args;
slc::slc_repeat *tail, *end;
TEXT *pattern1 =
"GDS__GET_SLICE (%V1, %RF%DH%RE, %RF%RT%RE, %RF%FR%RE, %N1, \
%I1, %N2, %I1v, %I1s, %RF%S5%RE, %RF%S6%RE);";
TEXT *pattern2 =
"GDS__PUT_SLICE (%V1, %RF%DH%RE, %RF%RT%RE, %RF%FR%RE, %N1, \
%I1, %N2, %I1v, %I1s, %RF%S5%RE);";
request = action->act_request;
slice = (SLC) action->act_object;
parent_request = slice->slc_parent_request;
// Compute array size
printa(column, "gds__%ds := %d", request->req_ident,
slice->slc_field->fld_array->fld_length);
for (tail = slice->slc_rpt, end = tail + slice->slc_dimensions;
tail < end; ++tail)
if (tail->slc_upper != tail->slc_lower) {
lower = (REF) tail->slc_lower->nod_arg[0];
upper = (REF) tail->slc_upper->nod_arg[0];
if (lower->ref_value)
ib_fprintf(out_file, " * ( %s - %s + 1)", upper->ref_value,
lower->ref_value);
else
ib_fprintf(out_file, " * ( %s + 1)", upper->ref_value);
}
ib_fprintf(out_file, ";");
// Make assignments to variable vector
for (reference = request->req_values; reference;
reference =
reference->ref_next) printa(column, "gds__%dv [%d] := %s;",
request->req_ident, reference->ref_id,
reference->ref_value);
args.pat_reference = slice->slc_field_ref;
args.pat_request = parent_request; /* blob id request */
args.pat_vector1 = status_vector(action); /* status vector */
args.pat_database = parent_request->req_database; /* database handle */
args.pat_string1 = action->act_request->req_trans; /* transaction handle */
args.pat_value1 = request->req_length; /* slice descr. length */
args.pat_ident1 = request->req_ident; /* request name */
args.pat_value2 = slice->slc_parameters * sizeof(SLONG); /* parameter length */
reference = (REF) slice->slc_array->nod_arg[0];
args.pat_string5 = reference->ref_value; /* array name */
args.pat_string6 = "gds__array_length";
PATTERN_expand(column,
(action->act_type == ACT_get_slice) ? pattern1 : pattern2,
&args);
}
//____________________________________________________________
//
// Generate either a START or START_AND_SEND depending
// on whether or a not a port is present.
//
static void gen_start( ACT action, POR port, int column)
{
GPRE_REQ request;
TEXT *vector;
REF reference;
request = action->act_request;
vector = status_vector(action);
align(column);
if (port) {
for (reference = port->por_references; reference;
reference =
reference->ref_next) if (reference->ref_field->
fld_array_info)
gen_get_or_put_slice(action, reference, FALSE, column);
ib_fprintf(out_file,
"GDS__START_AND_SEND (%s, %s, %s, %d, %d, gds__%d, %s);",
vector, request->req_handle, request_trans(action,
request),
port->por_msg_number, port->por_length, port->por_ident,
request->req_request_level);
}
else
ib_fprintf(out_file, "GDS__START_REQUEST (%s, %s, %s, %s);",
vector,
request->req_handle,
request_trans(action, request),
request->req_request_level);
}
//____________________________________________________________
//
// Generate text for STORE statement. This includes the compile
// call and any variable initialization required.
//
static void gen_store( ACT action, int column)
{
GPRE_REQ request;
REF reference;
GPRE_FLD field;
POR port;
TEXT name[64];
request = action->act_request;
gen_compile(action, column);
if (action->act_error || (action->act_flags & ACT_sql)) {
make_ok_test(action, request, column);
column += INDENT;
if (action->act_error)
BEGIN;
}
// Initialize any blob fields
port = request->req_primary;
for (reference = port->por_references; reference;
reference = reference->ref_next) {
field = reference->ref_field;
if (field->fld_flags & FLD_blob)
printa(column, "%s := gds__blob_null;\n",
gen_name(name, reference, TRUE));
}
}
//____________________________________________________________
//
// Generate substitution text for START_TRANSACTION.
//
static void gen_t_start( ACT action, int column)
{
DBB db;
GPRE_TRA trans;
TPB tpb;
int count;
TEXT *filename;
//
// for automatically generated transactions, and transactions that are
// explicitly started, but don't have any arguments so don't get a TPB,
// generate something plausible.
//
if (!action || !(trans = (GPRE_TRA) action->act_object)) {
t_start_auto(action, 0, status_vector(action), column);
return;
}
// build a complete statement, including tpb's.
// first generate any appropriate ready statements,
// On non-VMS machines, fill in the tpb vector (aka TEB).
count = 0;
for (tpb = trans->tra_tpb; tpb; tpb = tpb->tpb_tra_next) {
count++;
db = tpb->tpb_database;
if (sw_auto)
if ((filename = db->dbb_runtime) || !(db->dbb_flags & DBB_sqlca)) {
printa(column, "if (%s = nil) then",
db->dbb_name->sym_string);
make_ready(db, filename, status_vector(action),
column + INDENT, 0);
}
#ifndef VMS
printa(column, "gds__teb[%d].tpb_len := %d;", count, tpb->tpb_length);
printa(column, "gds__teb[%d].tpb_ptr := ADDR(gds__tpb_%d);",
count, tpb->tpb_ident);
printa(column, "gds__teb[%d].dbb_ptr := ADDR(%s);",
count, db->dbb_name->sym_string);
#endif
}
#ifdef VMS
// Now build the start_transaction. Use lots of %REF and %IMMED to
// convince the PASCAL compiler not to hassle us about the argument list.
printa(column, "GDS__START_TRANSACTION (%s, %%REF %s, %%IMMED %d",
status_vector(action),
(trans->tra_handle) ? trans->tra_handle : "gds__trans",
trans->tra_db_count);
for (tpb = trans->tra_tpb; tpb; tpb = tpb->tpb_tra_next) {
ib_putc(',', out_file);
align(column + INDENT);
ib_fprintf(out_file, "%%REF %s, %%IMMED %d, %%REF gds__tpb_%d",
tpb->tpb_database->dbb_name->sym_string,
tpb->tpb_length, tpb->tpb_ident);
}
ib_fprintf(out_file, ")");
#else
printa(column, "GDS__START_MULTIPLE (%s, %s, %d, gds__teb);",
status_vector(action),
(trans->tra_handle) ? trans->tra_handle : "gds__trans",
trans->tra_db_count);
#endif
SET_SQLCODE;
}
//____________________________________________________________
//
// Generate a TPB in the output file
//
static void gen_tpb( TPB tpb, int column)
{
TEXT *text, buffer[80], c, *p;
int length;
printa(column, "gds__tpb_%d\t: %s [1..%d] of char := %s",
tpb->tpb_ident, PACKED_ARRAY, tpb->tpb_length, OPEN_BRACKET);
length = tpb->tpb_length;
text = (TEXT *) tpb->tpb_string;
p = buffer;
while (--length) {
c = *text++;
if ((c >= 'A' && c <= 'Z') || c == '$' || c == '_')
sprintf(p, "'%c', ", c);
else
sprintf(p, "chr(%d), ", c);
while (*p)
p++;
if (p - buffer > 60) {
align(column + INDENT);
ib_fprintf(out_file, " %s", buffer);
p = buffer;
*p = 0;
}
}
// handle the last character
c = *text++;
if ((c >= 'A' && c <= 'Z') || c == '$' || c == '_')
sprintf(p, "'%c',", c);
else
sprintf(p, "chr(%d)", c);
align(column + INDENT);
ib_fprintf(out_file, "%s", buffer);
printa(column, "%s;\n", CLOSE_BRACKET);
}
//____________________________________________________________
//
// Generate substitution text for COMMIT, ROLLBACK, PREPARE, and SAVE
//
static void gen_trans( ACT action, int column)
{
align(column);
if (action->act_type == ACT_commit_retain_context)
ib_fprintf(out_file, "GDS__COMMIT_RETAINING (%s, %s);",
status_vector(action),
(action->act_object) ? (TEXT *) action->
act_object : "gds__trans");
else
ib_fprintf(out_file, "GDS__%s_TRANSACTION (%s, %s);",
(action->act_type ==
ACT_commit) ? "COMMIT" : (action->act_type ==
ACT_rollback) ? "ROLLBACK" :
"PREPARE", status_vector(action),
(action->act_object) ? (TEXT *) action->
act_object : "gds__trans");
SET_SQLCODE;
}
//____________________________________________________________
//
// Generate substitution text for UPDATE ... WHERE CURRENT OF ...
//
static void gen_update( ACT action, int column)
{
POR port;
UPD modify;
modify = (UPD) action->act_object;
port = modify->upd_port;
asgn_from(action, port->por_references, column);
gen_send(action, port, column);
}
//____________________________________________________________
//
// Substitute for a variable reference.
//
static void gen_variable( ACT action, int column)
{
TEXT s[20];
printa(column, gen_name(s, action->act_object, FALSE));
}
//____________________________________________________________
//
// Generate tests for any WHENEVER clauses that may have been declared.
//
static void gen_whenever( SWE label, int column)
{
TEXT *condition;
if (label)
ib_fprintf(out_file, ";");
while (label) {
switch (label->swe_condition) {
case SWE_error:
condition = "SQLCODE < 0";
break;
case SWE_warning:
condition = "(SQLCODE > 0) AND (SQLCODE <> 100)";
break;
case SWE_not_found:
condition = "SQLCODE = 100";
break;
}
align(column);
ib_fprintf(out_file, "if %s then goto %s;", condition,
label->swe_label);
label = label->swe_next;
}
}
#ifdef PYXIS
//____________________________________________________________
//
// Create a new window.
//
static void gen_window_create( ACT action, int column)
{
printa(column,
"pyxis__create_window (gds__window, 0, 0, gds__width, gds__height)");
}
#endif
#ifdef PYXIS
//____________________________________________________________
//
// Delete a window.
//
static void gen_window_delete( ACT action, int column)
{
printa(column, "pyxis__delete_window (gds__window)");
}
#endif
#ifdef PYXIS
//____________________________________________________________
//
// Suspend a window.
//
static void gen_window_suspend( ACT action, int column)
{
printa(column, "pyxis__suspend_window (gds__window)");
}
#endif
//____________________________________________________________
//
// Generate a declaration of an array in the
// output file.
//
static void make_array_declaration( REF reference)
{
GPRE_FLD field;
TEXT *name;
TEXT s[64];
DIM dimension;
field = reference->ref_field;
name = field->fld_symbol->sym_string;
// Don't generate multiple declarations for the array. V3 Bug 569.
if (field->fld_array_info->ary_declared)
return;
field->fld_array_info->ary_declared = TRUE;
if (field->fld_array_info->ary_dtype <= dtype_varying)
ib_fprintf(out_file, "gds__%d : %s [",
field->fld_array_info->ary_ident, PACKED_ARRAY);
else
ib_fprintf(out_file, "gds__%d : array [",
field->fld_array_info->ary_ident);
// Print out the dimension part of the declaration
for (dimension = field->fld_array_info->ary_dimension; dimension;
dimension = dimension->dim_next) {
ib_fprintf(out_file, "%d..%d", dimension->dim_lower,
dimension->dim_upper);
if (dimension->dim_next)
ib_fprintf(out_file, ", ");
}
if (field->fld_array_info->ary_dtype <= dtype_varying)
ib_fprintf(out_file, ", 1..%d", field->fld_array->fld_length);
ib_fprintf(out_file, "] of ");
switch (field->fld_array_info->ary_dtype) {
case dtype_short:
ib_fprintf(out_file, SHORT_DCL);
break;
case dtype_long:
ib_fprintf(out_file, LONG_DCL);
break;
case dtype_cstring:
case dtype_text:
case dtype_varying:
ib_fprintf(out_file, "char");
break;
case dtype_date:
case dtype_quad:
ib_fprintf(out_file, "GDS__QUAD");
break;
case dtype_float:
ib_fprintf(out_file, "real");
break;
case dtype_double:
ib_fprintf(out_file, "double");
break;
default:
sprintf(s, "datatype %d unknown for field %s",
field->fld_array_info->ary_dtype, name);
IBERROR(s);
return;
}
// Print out the database field
ib_fprintf(out_file, ";\t(* %s *)\n", name);
}
//____________________________________________________________
//
// Turn a symbol into a varying string.
//
static TEXT *make_name( TEXT * string, SYM symbol)
{
sprintf(string, "'%s '", symbol->sym_string);
return string;
}
//____________________________________________________________
//
// Generate code to test existence of compiled request with
// active transaction
//
static void make_ok_test( ACT action, GPRE_REQ request, int column)
{
if (sw_auto)
printa(column, "if (%s <> nil) and (%s <> nil) then",
request_trans(action, request), request->req_handle);
else
printa(column, "if (%s <> nil) then", request->req_handle);
}
//____________________________________________________________
//
// Insert a port record description in output.
//
static void make_port( POR port, int column)
{
GPRE_FLD field;
REF reference;
SYM symbol;
SSHORT flag;
TEXT *name, s[80];
flag = FALSE;
printa(column, "gds__%dt = record", port->por_ident);
for (reference = port->por_references; reference;
reference = reference->ref_next) {
if (flag)
ib_fprintf(out_file, ";");
flag = TRUE;
align(column + INDENT);
field = reference->ref_field;
if (symbol = field->fld_symbol)
name = symbol->sym_string;
else
name = "<expression>";
if (reference->ref_value && (reference->ref_flags & REF_array_elem))
field = field->fld_array;
switch (field->fld_dtype) {
case dtype_float:
ib_fprintf(out_file, "gds__%d\t: real\t(* %s *)",
reference->ref_ident, name);
break;
case dtype_double:
ib_fprintf(out_file, "gds__%d\t: double\t(* %s *)",
reference->ref_ident, name);
break;
case dtype_short:
ib_fprintf(out_file, "gds__%d\t: %s\t(* %s *)",
reference->ref_ident, SHORT_DCL, name);
break;
case dtype_long:
ib_fprintf(out_file, "gds__%d\t: %s\t(* %s *)",
reference->ref_ident, LONG_DCL, name);
break;
case dtype_date:
case dtype_quad:
case dtype_blob:
ib_fprintf(out_file, "gds__%d\t: gds__quad\t(* %s *)",
reference->ref_ident, name);
break;
case dtype_text:
ib_fprintf(out_file, "gds__%d\t: %s [1..%d] of char\t(* %s *)",
reference->ref_ident, PACKED_ARRAY, field->fld_length,
name);
break;
default:
sprintf(s, "datatype %d unknown for field %s, msg %d",
field->fld_dtype, name, port->por_msg_number);
CPR_error(s);
return;
};
}
printa(column, "end;\n");
}
//____________________________________________________________
//
// Generate the actual insertion text for a
// ready;
//
static void make_ready(
DBB db,
TEXT * filename, TEXT * vector, USHORT column, GPRE_REQ request)
{
TEXT s1[32], s2[32];
if (request) {
sprintf(s1, "gds__%dL", request->req_ident);
sprintf(s2, "gds__%d", request->req_ident);
}
align(column);
if (filename)
#ifdef VMS
ib_fprintf(out_file,
"GDS__ATTACH_DATABASE_d (%s, %%STDESCR %s, %s, %s, %s);",
vector, filename, db->dbb_name->sym_string,
(request ? s1 : "0"), (request ? s2 : "0"));
#else
ib_fprintf(out_file,
"GDS__ATTACH_DATABASE (%s, %s (%s), %s, %s, %s, %s);",
vector, SIZEOF, filename, filename,
db->dbb_name->sym_string, (request ? s1 : "0"),
(request ? s2 : "0"));
#endif
else
ib_fprintf(out_file,
"GDS__ATTACH_DATABASE (%s, %d, '%s', %s, %s, %s);", vector,
strlen(db->dbb_filename), db->dbb_filename,
db->dbb_name->sym_string, (request ? s1 : "0"),
(request ? s2 : "0"));
}
//____________________________________________________________
//
// Print a fixed string at a particular column.
//
static void printa( int column, TEXT * string, ...)
{
va_list ptr;
VA_START(ptr, string);
align(column);
ib_vfprintf(out_file, string, ptr);
}
//____________________________________________________________
//
// Generate the appropriate transaction handle.
//
static TEXT *request_trans( ACT action, GPRE_REQ request)
{
TEXT *trname;
if (action->act_type == ACT_open) {
if (!(trname = ((OPN) action->act_object)->opn_trans))
trname = (TEXT*) "gds__trans";
return trname;
}
else
return (request) ? request->req_trans : (TEXT*) "gds__trans";
}
//____________________________________________________________
//
// Generate the appropriate status vector parameter for a gds
// call depending on where or not the action has an error clause.
//
static TEXT *status_vector( ACT action)
{
if (action && (action->act_error || (action->act_flags & ACT_sql)))
return "gds__status";
return "gds__null^";
}
//____________________________________________________________
//
// Generate substitution text for START_TRANSACTION.
// The complications include the fact that all databases
// must be readied, and that everything should stop if
// any thing fails so we don't trash the status vector.
//
static void t_start_auto( ACT action, GPRE_REQ request, TEXT * vector, int column)
{
DBB db;
int count, stat, and_count;
TEXT *filename, buffer[256], temp[40];
buffer[0] = 0;
// find out whether we're using a status vector or not
stat = !strcmp(vector, "gds__status");
// this is a default transaction, make sure all databases are ready
BEGIN;
for (db = isc_databases, count = and_count = 0; db; db = db->dbb_next) {
if (sw_auto)
if ((filename = db->dbb_runtime) || !(db->dbb_flags & DBB_sqlca)) {
align(column);
ib_fprintf(out_file, "if (%s = nil",
db->dbb_name->sym_string);
if (stat && buffer[0])
ib_fprintf(out_file, ") and (%s[2] = 0", vector);
ib_fprintf(out_file, ") then");
make_ready(db, filename, vector, column + INDENT, 0);
if (buffer[0])
if (and_count % 4)
strcat(buffer, ") and (");
else
strcat(buffer, ") and\n\t(");
and_count++;
sprintf(temp, "%s <> nil", db->dbb_name->sym_string);
strcat(buffer, temp);
printa(column, "if (%s) then", buffer);
align(column + INDENT);
}
count++;
#ifndef VMS
printa(column, "gds__teb[%d].tpb_len:= 0;", count);
printa(column, "gds__teb[%d].tpb_ptr := ADDR(gds__null);", count);
printa(column, "gds__teb[%d].dbb_ptr := ADDR(%s);", count,
db->dbb_name->sym_string);
#endif
}
#ifdef VMS
column += INDENT;
printa(column, "GDS__START_TRANSACTION (%s, %%REF %s, %%IMMED %d",
vector, request_trans(action, request), count);
for (db = isc_databases; db; db = db->dbb_next) {
ib_putc(',', out_file);
align(column + INDENT);
ib_fprintf(out_file, "%%REF %s, %%IMMED 0, %%REF 0",
db->dbb_name->sym_string);
}
ib_fprintf(out_file, ");");
column -= INDENT;
#else
printa(column, "GDS__START_MULTIPLE (%s, %s, %d, gds__teb);",
vector, request_trans(action, request), count);
#endif
if (sw_auto && request)
column -= INDENT;
SET_SQLCODE;
ENDS;
}
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