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/*
AngelCode Scripting Library
Copyright (c) 2003-2012 Andreas Jonsson
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any
damages arising from the use of this software.
Permission is granted to anyone to use this software for any
purpose, including commercial applications, and to alter it and
redistribute it freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you
must not claim that you wrote the original software. If you use
this software in a product, an acknowledgment in the product
documentation would be appreciated but is not required.
2. Altered source versions must be plainly marked as such, and
must not be misrepresented as being the original software.
3. This notice may not be removed or altered from any source
distribution.
The original version of this library can be located at:
http://www.angelcode.com/angelscript/
Andreas Jonsson
andreas@angelcode.com
*/
//
// as_variablescope.cpp
//
// A manager class for variable declarations
//
#include "as_config.h"
#ifndef AS_NO_COMPILER
#include "as_variablescope.h"
BEGIN_AS_NAMESPACE
asCVariableScope::asCVariableScope(asCVariableScope *_parent) {
this->parent = _parent;
Reset();
}
asCVariableScope::~asCVariableScope() {
Reset();
}
void asCVariableScope::Reset() {
isBreakScope = false;
isContinueScope = false;
for (asUINT n = 0; n < variables.GetLength(); n++)
if (variables[n]) {
asDELETE(variables[n], sVariable);
}
variables.SetLength(0);
}
int asCVariableScope::DeclareVariable(const char *name, const asCDataType &type, int stackOffset, bool onHeap) {
// TODO: optimize: Improve linear search
// See if the variable is already declared
if (strcmp(name, "") != 0) {
for (asUINT n = 0; n < variables.GetLength(); n++) {
if (variables[n]->name == name)
return -1;
}
}
sVariable *var = asNEW(sVariable);
if (var == 0) {
// Out of memory. Return without allocating the var
return -2;
}
var->name = name;
var->type = type;
var->stackOffset = stackOffset;
var->isInitialized = false;
var->isPureConstant = false;
var->onHeap = onHeap;
// Parameters are initialized
if (stackOffset <= 0)
var->isInitialized = true;
variables.PushLast(var);
return 0;
}
sVariable *asCVariableScope::GetVariable(const char *name) {
// TODO: optimize: Improve linear search
// Find the variable
for (asUINT n = 0; n < variables.GetLength(); n++) {
if (variables[n]->name == name)
return variables[n];
}
if (parent)
return parent->GetVariable(name);
return 0;
}
sVariable *asCVariableScope::GetVariableByOffset(int offset) {
// TODO: optimize: Improve linear search
// Find the variable
for (asUINT n = 0; n < variables.GetLength(); n++) {
if (variables[n]->stackOffset == offset)
return variables[n];
}
if (parent)
return parent->GetVariableByOffset(offset);
return 0;
}
END_AS_NAMESPACE
#endif // AS_NO_COMPILER
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