eccodes/src/action_class_switch.cc

241 lines
7.2 KiB
C++

/*
* (C) Copyright 2005- ECMWF.
*
* This software is licensed under the terms of the Apache Licence Version 2.0
* which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
*
* In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
* virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
*/
#include "grib_api_internal.h"
/*
This is used by make_class.pl
START_CLASS_DEF
CLASS = action
SUPER = action_class_section
IMPLEMENTS = destroy
IMPLEMENTS = execute
MEMBERS = grib_arguments* args
MEMBERS = grib_case *Case
MEMBERS = grib_action *Default
END_CLASS_DEF
*/
/* START_CLASS_IMP */
/*
Don't edit anything between START_CLASS_IMP and END_CLASS_IMP
Instead edit values between START_CLASS_DEF and END_CLASS_DEF
or edit "action.class" and rerun ./make_class.pl
*/
static void init_class (grib_action_class*);
static void destroy (grib_context*,grib_action*);
static int execute(grib_action* a,grib_handle* h);
typedef struct grib_action_switch {
grib_action act;
/* Members defined in section */
/* Members defined in switch */
grib_arguments* args;
grib_case *Case;
grib_action *Default;
} grib_action_switch;
extern grib_action_class* grib_action_class_section;
static grib_action_class _grib_action_class_switch = {
&grib_action_class_section, /* super */
"action_class_switch", /* name */
sizeof(grib_action_switch), /* size */
0, /* inited */
&init_class, /* init_class */
0, /* init */
&destroy, /* destroy */
0, /* dump */
0, /* xref */
0, /* create_accessor*/
0, /* notify_change */
0, /* reparse */
&execute, /* execute */
};
grib_action_class* grib_action_class_switch = &_grib_action_class_switch;
static void init_class(grib_action_class* c)
{
c->dump = (*(c->super))->dump;
c->xref = (*(c->super))->xref;
c->create_accessor = (*(c->super))->create_accessor;
c->notify_change = (*(c->super))->notify_change;
c->reparse = (*(c->super))->reparse;
}
/* END_CLASS_IMP */
grib_action* grib_action_create_switch(grib_context* context,
grib_arguments* args,
grib_case* Case,
grib_action* Default)
{
char name[1024];
const size_t nameLen = sizeof(name);
grib_action_switch* a;
grib_action_class* c = grib_action_class_switch;
grib_action* act = (grib_action*)grib_context_malloc_clear_persistent(context, c->size);
act->op = grib_context_strdup_persistent(context, "section");
act->cclass = c;
a = (grib_action_switch*)act;
act->context = context;
a->args = args;
a->Case = Case;
a->Default = Default;
snprintf(name, nameLen, "_switch%p", (void*)a);
act->name = grib_context_strdup_persistent(context, name);
return act;
}
grib_case* grib_case_new(grib_context* c, grib_arguments* values, grib_action* action)
{
grib_case* Case = (grib_case*)grib_context_malloc_clear_persistent(c, sizeof(grib_case));
Case->values = values;
Case->action = action;
return Case;
}
static int execute(grib_action* act, grib_handle* h)
{
grib_action_switch* a = (grib_action_switch*)act;
grib_case* c = a->Case;
grib_action* next = a->Default;
grib_arguments* args = a->args;
grib_arguments* values;
grib_expression* e; // The expression in the switch statement
grib_expression* value; // The value in each 'case'
int ret = 0;
long lres = 0;
double dres = 0;
long lval = 0;
double dval = 0;
int type = 0;
int ok = 0;
const char* cval;
const char* cres;
char buf[80];
char tmp[80];
size_t len = sizeof(buf);
size_t size = sizeof(tmp);
int err = 0;
Assert(args);
while (c) {
e = args->expression;
values = c->values;
value = values->expression;
ok = 0;
while (e && value) {
if (!strcmp(value->cclass->name, "true"))
ok = 1;
else {
type = grib_expression_native_type(h, value);
switch (type) {
case GRIB_TYPE_LONG:
ok = (grib_expression_evaluate_long(h, value, &lres) == GRIB_SUCCESS) &&
(grib_expression_evaluate_long(h, e, &lval) == GRIB_SUCCESS) &&
(lval == lres);
break;
case GRIB_TYPE_DOUBLE:
ok = (grib_expression_evaluate_double(h, value, &dres) == GRIB_SUCCESS) &&
(grib_expression_evaluate_double(h, e, &dval) == GRIB_SUCCESS) &&
(dval == dres);
break;
case GRIB_TYPE_STRING:
len = sizeof(buf);
size = sizeof(tmp);
ok = ((cres = grib_expression_evaluate_string(h, e, buf, &len, &err)) != NULL) &&
(err == 0) &&
((cval = grib_expression_evaluate_string(h, value, tmp, &size, &err)) != NULL) &&
(err == 0) &&
((strcmp(buf, cval) == 0) || (strcmp(cval, "*") == 0));
break;
default:
/* TODO: */
break;
}
}
if (!ok)
break;
args = args->next;
if (args)
e = args->expression;
else
e = NULL;
values = values->next;
if (values)
value = values->expression;
else
value = NULL;
}
if (ok) {
next = c->action;
break;
}
c = c->next;
}
if (!next)
return GRIB_SWITCH_NO_MATCH;
while (next) {
ret = grib_action_execute(next, h);
if (ret != GRIB_SUCCESS)
return ret;
next = next->next;
}
return GRIB_SUCCESS;
}
static void destroy(grib_context* context, grib_action* act)
{
grib_action_switch* a = (grib_action_switch*)act;
grib_case* t = a->Case;
while (t) {
grib_case* nt = t->next;
grib_action_delete(context, t->action);
grib_arguments_free(context, t->values);
grib_context_free(context, t);
t = nt;
}
grib_action_delete(context, a->Default);
grib_context_free_persistent(context, act->name);
grib_context_free_persistent(context, act->op);
}