typeconv.cpp

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#include "StdLib.hpp"
 
namespace Phasor
{
 
void StdLib::registerTypeConvFunctions(VM *vm)
{
    vm->registerNativeFunction("to_int", StdLib::to_int);
    vm->registerNativeFunction("to_float", StdLib::to_float);
    vm->registerNativeFunction("to_string", StdLib::to_string);
    vm->registerNativeFunction("to_bool", StdLib::to_bool);
}
 
Value StdLib::to_int(const std::vector<Value> &args, VM *vm)
{
    checkArgCount(args, 1, "to_int");
    if (args[0].isInt())
        return args[0];
    if (args[0].isFloat())
        return Value(static_cast<int64_t>(args[0].asFloat()));
    if (args[0].isString())
    {
        try
        {
            return static_cast<int64_t>(std::stoll(args[0].asString()));
        }
        catch (...)
        {
            return 0;
        }
    }
    if (args[0].isBool())
        return args[0].asBool() ? 1 : 0;
    return 0;
}
 
Value StdLib::to_float(const std::vector<Value> &args, VM *vm)
{
    checkArgCount(args, 1, "to_float");
    return args[0].asFloat();
}
 
Value StdLib::to_string(const std::vector<Value> &args, VM *vm)
{
    checkArgCount(args, 1, "to_string");
    return args[0].toString();
}
 
Value StdLib::to_bool(const std::vector<Value> &args, VM *vm)
{
    checkArgCount(args, 1, "to_bool");
    if (args[0].isBool())
        return args[0];
    if (args[0].isInt())
        return args[0].asInt() != 0;
    if (args[0].isString())
        return !args[0].asString().empty();
    return false;
}
 
} // namespace Phasor