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/*
* Variable.cpp
*
* Created on: 6 Mar 2021
* Author: David
*/
#include "Variable.h"
#include <Platform/OutputMemory.h>
Variable::Variable(const char *str, ExpressionValue pVal, int8_t pScope) noexcept : name(str), val(pVal), scope(pScope)
{
}
Variable::~Variable()
{
name.Delete();
val.Release();
}
Variable* VariableSet::Lookup(const char *str) noexcept
{
Variable *v;
for (v = root; v != nullptr; v = v->next)
{
auto vname = v->name.Get();
if (strcmp(vname.Ptr(), str) == 0)
{
break;
}
}
return v;
}
const Variable* VariableSet::Lookup(const char *str) const noexcept
{
const Variable *v;
for (v = root; v != nullptr; v = v->next)
{
auto vname = v->name.Get();
if (strcmp(vname.Ptr(), str) == 0)
{
break;
}
}
return v;
}
void VariableSet::Insert(Variable *toInsert) noexcept
{
toInsert->next = root;
root = toInsert;
}
// Remove all variables with a scope greater than the parameter
void VariableSet::EndScope(uint8_t blockNesting) noexcept
{
Variable *prev = nullptr;
for (Variable *v = root; v != nullptr; )
{
if (v->scope > blockNesting)
{
Variable *temp = v;
v = v->next;
if (prev == nullptr)
{
root = v;
}
else
{
prev->next = v;
}
delete temp;
}
else
{
prev = v;
v = v->next;
}
}
}
void VariableSet::Delete(const char *str) noexcept
{
Variable *prev = nullptr;
for (Variable *v = root; v != nullptr; v = v->next)
{
auto vname = v->name.Get();
if (strcmp(vname.Ptr(), str) == 0)
{
if (prev == nullptr)
{
root = v->next;
}
else
{
prev->next = v->next;
}
delete v;
break;
}
prev = v;
}
}
void VariableSet::Clear() noexcept
{
while (root != nullptr)
{
Variable *v = root;
root = v->next;
delete v;
}
}
VariableSet::~VariableSet()
{
Clear();
}
// Delete any existing variables and instead use the variables from the argument, taking ownership of them
void VariableSet::AssignFrom(VariableSet& other) noexcept
{
Clear();
root = other.root;
other.root = nullptr;
}
void VariableSet::IterateWhile(stdext::inplace_function<bool(unsigned int, const Variable&) /*noexcept*/ > func) const noexcept
{
unsigned int num = 0;
for (const Variable *v = root; v != nullptr; v = v->GetNext())
{
if (!func(num, *v))
{
break;
}
++num;
}
}
// End
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