/// <summary>
/// 从最近的作用域寻找变量并赋值；若变量不存在则在栈顶作用域声明之
/// </summary>
/// <param name="varName"></param>
/// <param name="value"></param>
internal void SetValue(string varName, RightValue value)
{
Scope scope = searchVar(varName);
if (scope != null)
{
scope.SetValue(varName, value);
}
else
{
scope = scopeStack.First.Value;
scope.SetValue(varName, value);
}
}
private DataType readAlgoOperand(RightValue v1, RightValue v2, Location loc)
{
if (v1 is BoolConst || v2 is BoolConst
|| v1 is StringConst || v2 is StringConst)
{
throw new RuntimeException(new Error(ErrorType.OprandTypeError, loc));
}
else if (v1 is FloatConst || v2 is FloatConst)
{
return DataType.Float;
}
else if (v1 is IntConst && v2 is IntConst)
{
return DataType.Int;
}
else
{
throw new RuntimeException(new Error(ErrorType.OprandTypeError, loc));
}
}
