Stack.cpp

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#ifndef CMAKE
#include "VM.hpp"
#endif
 
namespace Phasor
{
 
void VM::push(const Value &value)
{
#ifdef TRACING_STACK
    log(std::format("VM::{}({:T})\n", __func__, value));
    flush();
#endif
    stack.push_back(value);
}
 
Value VM::pop()
{
    if (stack.empty())
    {
#ifdef TRACING_STACK
        log(std::format("VM::{}() -> <empty stack>\n", __func__));
        flush();
#endif
        std::string msg = "Stack underflow at pc=" + std::to_string(pc);
        throw std::runtime_error(msg);
        return Value();
    }
#ifdef TRACING_STACK
    log(std::format("VM::{}() -> {:T}\n", __func__, stack.back()));
    flush();
#endif
    Value value = stack.back();
    stack.pop_back();
    return value;
}
 
Value VM::peek()
{
    if (stack.empty())
    {
#ifdef TRACING_STACK
        log(std::format("VM::{}() -> <empty stack>\n", __func__));
        flush();
#endif
        std::string msg = "Stack is empty at pc=" + std::to_string(pc);
        throw std::runtime_error(msg);
        return Value();
    }
#ifdef TRACING_STACK
    log(std::format("VM::{}() -> {:T}\n", __func__, stack.back()));
    flush();
#endif
    return stack.back();
}
 
} // namespace Phasor