143 lines
3.1 KiB
C++
143 lines
3.1 KiB
C++
/*
|
|
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
|
|
|
|
|