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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 3 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, see <http://www.gnu.org/licenses/>.
*
*/
#include "ags/engine/script/system_imports.h"
namespace AGS3 {
uint32_t SystemImports::add(const String &name, const RuntimeScriptValue &value, ccInstance *anotherscr) {
uint32_t ixof = get_index_of(name);
// Check if symbol already exists
if (ixof != UINT32_MAX) {
// Only allow override if not a script-exported function
if (anotherscr == nullptr) {
imports[ixof].Value = value;
imports[ixof].InstancePtr = anotherscr;
}
return ixof;
}
ixof = imports.size();
for (size_t i = 0; i < imports.size(); ++i) {
if (imports[i].Name == nullptr) {
ixof = i;
break;
}
}
btree[name] = ixof;
if (ixof == imports.size())
imports.push_back(ScriptImport());
imports[ixof].Name = name;
imports[ixof].Value = value;
imports[ixof].InstancePtr = anotherscr;
return ixof;
}
void SystemImports::remove(const String &name) {
uint32_t idx = get_index_of(name);
if (idx == UINT32_MAX)
return;
btree.erase(imports[idx].Name);
imports[idx].Name = nullptr;
imports[idx].Value.Invalidate();
imports[idx].InstancePtr = nullptr;
}
const ScriptImport *SystemImports::getByName(const String &name) {
uint32_t o = get_index_of(name);
if (o == UINT32_MAX)
return nullptr;
return &imports[o];
}
const ScriptImport *SystemImports::getByIndex(uint32_t index) {
if (index >= imports.size())
return nullptr;
return &imports[index];
}
uint32_t SystemImports::get_index_of(const String &name) {
IndexMap::const_iterator it = btree.find(name);
if (it != btree.end())
return it->_value;
// CHECKME: what are "mangled names" and where do they come from?
String mangled_name = String::FromFormat("%s$", name.GetCStr());
// if it's a function with a mangled name, allow it
it = btree.lower_bound(mangled_name);
if (it != btree.end() && it->_key.CompareLeft(mangled_name) == 0)
return it->_value;
if (name.GetLength() > 3) {
size_t c = name.FindCharReverse('^');
if (c != String::NoIndex && (c == name.GetLength() - 2 || c == name.GetLength() - 3)) {
// Function with number of prametrs on the end
// attempt to find it without the param count
return get_index_of(name.Left(c));
}
}
return UINT32_MAX;
}
String SystemImports::findName(const RuntimeScriptValue &value) {
for (const auto &import : imports) {
if (import.Value == value) {
return import.Name;
}
}
return String();
}
void SystemImports::RemoveScriptExports(ccInstance *inst) {
if (!inst) {
return;
}
for (auto &import : imports) {
if (import.Name == nullptr)
continue;
if (import.InstancePtr == inst) {
btree.erase(import.Name);
import.Name = nullptr;
import.Value.Invalidate();
import.InstancePtr = nullptr;
}
}
}
void SystemImports::clear() {
btree.clear();
imports.clear();
}
} // namespace AGS3
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