source: cpp/frams/param/paramobj.cpp @ 1300

// This file is a part of Framsticks SDK.  http://www.framsticks.com/
// Copyright (C) 1999-2021  Maciej Komosinski and Szymon Ulatowski.
// See LICENSE.txt for details.

#include <frams/param/paramobj.h>
#include <frams/util/extvalue.h>
#include <algorithm>
        
static const char* maybedup(bool dup, const char* src)
{
        return dup ? (src ? strdup(src) : 0) : src;
}
static void maybefree(void* mem)
{
        if (mem) free(mem);
}

int ParamObject::firstFieldOffset()
{
        static ParamObject dummy(0, NULL);
        return ((char*)&dummy.fields[0]) - (char*)&dummy;
}

ParamEntry* ParamObject::makeParamTab(ParamInterface *pi, bool stripgroups, bool stripproc,
        int firstprop, int maxprops, bool dupentries, int flagsexclude_data, int flagsexclude_tab, bool addnew, const char* rename, bool readonly_into_userreadonly)
{
        // flagsexclude_data - skip while calculating data offsets
        // flagsexclude_tab - skip while creating paramtab
        // usually _data==_tab, but vmneuron public properties need _data=0 and _tab=PARAM_USERHIDDEN (data object has all fields, paramtab skips private fields)
        ParamEntry *tab, *t;
        int i, n, offset;
        static ExtValue ex;
        int count = 0, gcount = 1;
        if (!stripgroups) gcount = pi->getGroupCount();
        if (stripproc || flagsexclude_tab)
                for (int i = firstprop; i < pi->getPropCount(); i++)
                {
                const char*t = pi->type(i);
                if ((!stripproc) || (strchr("dfsox", *t)))
                        if ((!flagsexclude_tab) || (!(pi->flags(i)&flagsexclude_tab)))
                                if (++count >= maxprops) break;
                }
        else count = pi->getPropCount() - firstprop;
        if (addnew) count++;
        t = tab = (ParamEntry*)malloc(sizeof(ParamEntry)*(count + gcount + 1));
        t->group = (paInt)gcount;
        t->flags = (paInt)count;
        t->name = maybedup(dupentries, rename ? rename : pi->getName());
        t->type = maybedup(dupentries, pi->getDescription());
        t->help = maybedup(dupentries, pi->getLongName());
        for (i = 0; i < gcount; i++)
        {
                t->id = maybedup(dupentries, pi->grname(i));
                t->offset = 0;
                t++;
        }
        n = 1;
        offset = firstFieldOffset();
        if (addnew)
        {
                t->id = maybedup(dupentries, "new");
                t->name = maybedup(dupentries, "create new object");
                SString tmp = SString::sprintf("p o%s()", pi->getName());
                t->type = maybedup(dupentries, tmp.c_str());
                t->help = maybedup(dupentries, pi->help(i));
                t->flags = 0;
                t->group = 0;
                t->offset = PARAM_ILLEGAL_OFFSET;
                t->fun1 = (void*)p_new;
                t->fun2 = 0;
                t++;
        }
        for (i = firstprop; i < pi->getPropCount(); i++)
        {
                const char* type = pi->type(i);
                if ((!stripproc) || (strchr("dfsox", type[0])))
                {
                        paInt flag = pi->flags(i);
                        int tmp_offset;
                        if ((!flagsexclude_data) || (!(flag&flagsexclude_data)))
                        {
                                if (type[0] == 'p')
                                        tmp_offset = 0;
                                else
                                {
                                        tmp_offset = offset;
                                        if (type[0] != 'x') tmp_offset += (((char*)&ex.data[0]) - ((char*)&ex));
                                        offset += sizeof(ExtValue);
                                }
                        }

                        if ((!flagsexclude_tab) || (!(flag&flagsexclude_tab)))
                        {
                                t->offset = tmp_offset;
                                t->group = (paInt)(stripgroups ? 0 : pi->group(i));
                                t->flags = (paInt)flag;
                                if (readonly_into_userreadonly && (t->flags & PARAM_READONLY))
                                        t->flags = (t->flags & ~PARAM_READONLY) | PARAM_USERREADONLY;
                                t->fun1 = 0;
                                t->fun2 = 0;
                                t->id = maybedup(dupentries, pi->id(i));
                                t->name = maybedup(dupentries, pi->name(i));
                                t->type = maybedup(dupentries, type);
                                t->help = maybedup(dupentries, pi->help(i));
                                t++; n++;
                                if (n > count) break;
                        }
                }
        }
        t->id = 0; t->group = 0; t->flags = dupentries ? MUTPARAM_ALLOCENTRY : 0;
        return tab;
}

void ParamObject::setParamTabText(ParamEntry *pe, const char* &ptr, const char* txt)
{
        if (!paramTabAllocatedString(pe))
                return;
        maybefree((char*)ptr);
        ptr = maybedup(true, txt);
}

bool ParamObject::paramTabAllocatedString(ParamEntry *pe)
{
        return (pe[pe->flags + pe->group].flags & MUTPARAM_ALLOCENTRY) ? true : false;
}

void ParamObject::freeParamTab(ParamEntry *pe)
{
        if (paramTabAllocatedString(pe))
        {
                int i;
                ParamEntry *e;
                maybefree((void*)pe->name);
                maybefree((void*)pe->type);
                maybefree((void*)pe->help);
                for (i = 0, e = pe; i < pe->group; i++, e++)
                        maybefree((void*)e->id);
                for (i = pe->group, e = pe + i; i < pe->group + pe->flags; i++, e++)
                {
                        maybefree((void*)e->id);
                        maybefree((void*)e->name);
                        maybefree((void*)e->type);
                        maybefree((void*)e->help);
                }
        }
        free(pe);
}

bool ParamObject::paramTabEqual(ParamEntry *pe1, ParamEntry *pe2)
{
        if (pe1->flags != pe2->flags) return false;
        ParamEntry *e1 = pe1 + pe1->group, *e2 = pe2 + pe2->group;
        for (int i = 0; i < pe1->flags; i++, e1++, e2++)
        {
                if (strcmp(e1->id, e2->id)) return false;
                if (strcmp(e1->name, e2->name)) return false;
                if (strcmp(e1->type, e2->type)) return false;
                if (e1->offset != e2->offset) return false;
        }
        return true;
}

void ParamObject::p_new(void* obj, ExtValue *args, ExtValue *ret)
{
        ParamObject *this_obj = (ParamObject*)obj;
        ParamObject *po = makeObject(this_obj->par.getParamTab());
        ret->setObject(ExtObject(&this_obj->par, po));
        po->par.setDefault();
}

ParamObject::ParamObject(int _numfields, ParamEntry *_tab)
{
        numfields = _numfields;
        par.setParamTab(_tab);
        par.select(this);
        for (int i = 0; i < numfields; i++)
                new(&fields[i])ExtValue();
}

ParamObject::~ParamObject()
{
        for (int i = 0; i < numfields; i++)
                fields[i].~ExtValue();
}

ParamObject* ParamObject::makeObject(ParamEntry *tab)
{
        if (!tab) return NULL;
        int n = tab->flags, used_fields = 0;
        for (ParamEntry *t = tab + tab->group; n > 0; n--, t++)
                if (strchr("dfsox", t->type[0]))
                        used_fields++;

        if (used_fields == 0) return NULL;
        ParamObject *obj = new(used_fields)ParamObject(used_fields, tab); // new(n): allocate n fields ; ParamObject(n,...): tell the object it has n fields
        ExtValue *v = &obj->fields[0];
        n = tab->flags;
        for (ParamEntry *t = tab + tab->group; n > 0; n--, t++)
                switch (*t->type)
        {
                case 'd': v->setInt(0); v++; break;
                case 'f': v->setDouble(0); v++; break;
                case 's': v->setString(SString::empty()); v++; break;
                case 'o':
                {
                        ExtObject new_obj;
                        if (t->flags & PARAM_OBJECTSET)
                        {
                                ParamInterface *cls = ExtValue::findDeserializableClass(t->type + 1);
                                if (cls)
                                {
                                        int new_fun = cls->findId("new");
                                        if (new_fun >= 0)
                                        {
                                                ExtValue dummy, new_value;
                                                cls->call(new_fun, &dummy, &new_value);
                                                new_obj = new_value.getObject();
                                        }
                                }
                        }
                        v->setObject(new_obj);
                        v++;
                }
                        break;
                case 'x': v++; break;
        }
        return obj;
}

void ParamObject::operator=(const ParamObject& src)
{
        const ExtValue *s = &src.fields[0];
        ExtValue *d = &fields[0];
        int n = std::min(numfields, src.numfields);
        for (int i = 0; i < n; i++, d++, s++)
                *d = *s;
}

ParamObject* ParamObject::clone()
{
        ParamObject *c = new(numfields)ParamObject(numfields, par.getParamTab());
        *c = *this;
        return c;
}

void ParamObject::copyObject(void* dst, void* src)
{
        if ((!dst) || (!src)) return;
        ParamObject *s = (ParamObject*)src;
        ParamObject *d = (ParamObject*)dst;
        *d = *s;
}

void* ParamObject::dupObject(void* src)
{
        if (!src) return NULL;
        ParamObject *s = (ParamObject*)src;
        return s->clone();
}

void ParamObject::freeObject(void* obj)
{
        if (!obj) return;
        ParamObject *o = (ParamObject*)obj;
        delete o;
}