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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "glk/archetype/semantic.h"
#include "glk/archetype/archetype.h"
#include "glk/archetype/error.h"
#include "glk/archetype/id_table.h"
namespace Glk {
namespace Archetype {
typedef int *IntegerPtr;
int classify_as(progfile &f, int id_number, ClassifyType interpretation, void *ptr_to_data) {
IdRecPtr the_id_ptr;
String error_string;
int result = 0;
if (!index_ident(id_number, the_id_ptr)) {
error_message(f, "Attempt to classify unencountered identifier");
} else {
//with the_id_ptr^ do begin
if (the_id_ptr->id_kind == interpretation)
result = the_id_ptr->id_integer;
// If the existing id_kind is the DefaultClassification, we're allowed to
// change it; otherwise there's a conflict
else if (the_id_ptr->id_kind == DefaultClassification) {
the_id_ptr->id_kind = interpretation;
the_id_ptr->id_integer = the_id_ptr->id_index;
switch (the_id_ptr->id_kind) {
case TYPE_ID:
append_to_xarray(g_vm->Type_List, ptr_to_data);
append_to_xarray(g_vm->Type_ID_List, (void *)the_id_ptr->id_name);
the_id_ptr->id_integer = g_vm->Type_List.size();
break;
case OBJECT_ID:
if (ptr_to_data == nullptr) {
the_id_ptr->id_integer = 0;
} else {
// Object_List may have grown by unnamed objects between calls to classify_as.
// Fill in the intervening spaces with "null"
while (g_vm->Object_ID_List.size() < g_vm->Object_List.size())
append_to_xarray(g_vm->Object_ID_List, (void *)g_vm->NullStr);
append_to_xarray(g_vm->Object_List, ptr_to_data);
append_to_xarray(g_vm->Object_ID_List, (void *)the_id_ptr->id_name);
the_id_ptr->id_integer = g_vm->Object_List.size();
}
break;
case ATTRIBUTE_ID:
append_to_xarray(g_vm->Attribute_ID_List, (void *)the_id_ptr->id_name);
the_id_ptr->id_integer = g_vm->Attribute_ID_List.size();
break;
default:
break;
}
} else {
error_string = String::format("Identifier type conflict: \"%s\" already declared as ",
the_id_ptr->id_name->c_str());
switch (the_id_ptr->id_kind) {
case TYPE_ID:
error_string = error_string + "a type";
break;
case OBJECT_ID:
error_string = error_string + "an object";
break;
case ATTRIBUTE_ID:
error_string = error_string + "an attribute";
break;
case ENUMERATE_ID:
error_string = error_string + "a keyword";
break;
default:
break;
}
error_message(f, error_string);
the_id_ptr->id_integer = 0;
}
result = the_id_ptr->id_integer;
}
return result;
}
void get_meaning(int id_number, ClassifyType &meaning, int &number) {
IdRecPtr the_id_ptr;
if (!index_ident(id_number, the_id_ptr)) {
error("Internal error: attempt to find meaning of unencountered identifier");
} else {
meaning = the_id_ptr->id_kind;
number = the_id_ptr->id_integer;
}
}
void add_undefined(int the_ID) {
NodePtr np;
IntegerPtr ip;
np = find_item(g_vm->Overlooked, the_ID);
if (np != nullptr) {
++*((IntegerPtr)np->data);
} else {
np = new NodeType();
np->key = the_ID;
ip = new int();
*ip = 1; // TODO: Should this be 0-based?
np->data = ip;
insert_item(g_vm->Overlooked, np);
}
}
bool display_undefined() {
NodePtr np = nullptr;
IntegerPtr ip;
IdRecPtr id_rec;
bool exists = false;
while (iterate_list(g_vm->Overlooked, np)) {
if (!exists) {
debugN("The following identifiers were not explicitly defined.");
exists = true;
}
ip = (IntegerPtr)np->data;
debugN("Used %d", *ip);
if (*ip == 1)
debugN(" time: ");
else
debugN(" times: ");
if (index_ident(np->key, id_rec))
debug("%s", id_rec->id_name->c_str());
else
debug("<unknown identifier>");
delete ip;
}
dispose_list(g_vm->Overlooked);
return exists;
}
bool verify_expr(progfile &f, ExprTree the_expr) {
bool success = true;
switch (the_expr->_kind) {
case OPER:
switch (the_expr->_data._oper.op_name) {
case OP_DOT:
if (the_expr->_data._oper.right->_kind != IDENT) {
error_message(f, "Right side of dot must be an identifier");
success = false;
}
else if (the_expr->_data._oper.right->_data._ident.ident_kind != ATTRIBUTE_ID) {
the_expr->_data._oper.right->_data._ident.ident_int = classify_as(f,
the_expr->_data._oper.right->_data._ident.ident_int, ATTRIBUTE_ID, nullptr);
}
the_expr->_data._oper.right->_data._ident.ident_kind = ATTRIBUTE_ID;
if (the_expr->_data._oper.right->_data._ident.ident_int == 0)
success = false;
// fallthrough
// FIXME: is this fallthrough intentional?
case OP_ASSIGN:
case OP_C_CONCAT:
case OP_C_MULTIPLY:
case OP_C_DIVIDE:
case OP_C_PLUS:
case OP_C_MINUS:
if (the_expr->_data._oper.left->_kind == IDENT) {
get_meaning(the_expr->_data._oper.left->_data._ident.ident_int,
the_expr->_data._oper.left->_data._ident.ident_kind, the_expr->_data._oper.left->_data._ident.ident_int);
if (the_expr->_data._oper.left->_data._ident.ident_kind != ATTRIBUTE_ID) {
error_message(f, "Left side of assignment is not an attribute");
success = false;
}
}
else if (!(the_expr->_data._oper.left->_kind == OPER &&
the_expr->_data._oper.left->_data._oper.op_name == OP_DOT)) {
error_message(f, "Left side of assignment must reference an attribute");
success = false;
}
break;
default:
break;
}
if (success) {
if (Binary[the_expr->_data._oper.op_name])
success = verify_expr(f, the_expr->_data._oper.left);
}
if (success)
success = verify_expr(f, the_expr->_data._oper.right);
break;
default:
break;
}
return success;
}
} // End of namespace Archetype
} // End of namespace Glk
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