forked from OctaForge/libcubescript
434 lines
11 KiB
C++
434 lines
11 KiB
C++
#include <cubescript/cubescript.hh>
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#include "cs_vm.hh"
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#include "cs_util.hh"
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namespace cscript {
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template<typename T, typename U>
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static inline T &csv_get(U &stor) {
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/* ugly, but internal and unlikely to cause bugs */
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return const_cast<T &>(reinterpret_cast<T const &>(stor));
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}
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template<typename T>
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static inline void csv_cleanup(cs_value_type tv, T &stor) {
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switch (tv) {
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case cs_value_type::String:
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delete[] csv_get<char *>(stor);
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break;
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case cs_value_type::Code: {
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uint32_t *bcode = csv_get<uint32_t *>(stor);
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if (bcode[-1] == CsCodeStart) {
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delete[] &bcode[-1];
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}
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break;
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}
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default:
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break;
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}
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}
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cs_value::cs_value():
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p_stor(), p_len(0), p_type(cs_value_type::Null)
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{}
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cs_value::~cs_value() {
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csv_cleanup(p_type, p_stor);
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}
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cs_value::cs_value(cs_value const &v): cs_value() {
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*this = v;
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}
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cs_value::cs_value(cs_value &&v): cs_value() {
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*this = std::move(v);
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}
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cs_value &cs_value::operator=(cs_value const &v) {
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csv_cleanup(p_type, p_stor);
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p_type = cs_value_type::Null;
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switch (v.get_type()) {
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case cs_value_type::Int:
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case cs_value_type::Float:
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case cs_value_type::Ident:
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p_len = v.p_len;
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p_type = v.p_type;
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p_stor = v.p_stor;
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break;
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case cs_value_type::String:
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case cs_value_type::Cstring:
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case cs_value_type::Macro:
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set_str(cs_string{csv_get<char const *>(v.p_stor), v.p_len});
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break;
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case cs_value_type::Code:
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set_code(cs_copy_code(v.get_code()));
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break;
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default:
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break;
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}
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return *this;
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}
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cs_value &cs_value::operator=(cs_value &&v) {
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csv_cleanup(p_type, p_stor);
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p_stor = v.p_stor;
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p_type = v.p_type;
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p_len = v.p_len;
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v.p_type = cs_value_type::Null;
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return *this;
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}
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cs_value_type cs_value::get_type() const {
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return p_type;
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}
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void cs_value::set_int(cs_int val) {
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csv_cleanup(p_type, p_stor);
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p_type = cs_value_type::Int;
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csv_get<cs_int>(p_stor) = val;
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}
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void cs_value::set_float(cs_float val) {
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csv_cleanup(p_type, p_stor);
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p_type = cs_value_type::Float;
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csv_get<cs_float>(p_stor) = val;
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}
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void cs_value::set_str(cs_string val) {
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csv_cleanup(p_type, p_stor);
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p_type = cs_value_type::String;
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p_len = val.size();
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char *buf = new char[p_len + 1];
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memcpy(buf, val.data(), p_len + 1);
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csv_get<char *>(p_stor) = buf;
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}
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void cs_value::set_null() {
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csv_cleanup(p_type, p_stor);
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p_type = cs_value_type::Null;
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}
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void cs_value::set_code(cs_bcode *val) {
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csv_cleanup(p_type, p_stor);
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p_type = cs_value_type::Code;
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csv_get<cs_bcode *>(p_stor) = val;
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}
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void cs_value::set_cstr(ostd::string_range val) {
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csv_cleanup(p_type, p_stor);
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p_type = cs_value_type::Cstring;
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p_len = val.size();
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csv_get<char const *>(p_stor) = val.data();
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}
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void cs_value::set_ident(cs_ident *val) {
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csv_cleanup(p_type, p_stor);
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p_type = cs_value_type::Ident;
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csv_get<cs_ident *>(p_stor) = val;
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}
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void cs_value::set_macro(ostd::string_range val) {
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csv_cleanup(p_type, p_stor);
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p_type = cs_value_type::Macro;
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p_len = val.size();
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csv_get<char const *>(p_stor) = val.data();
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}
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void cs_value::force_null() {
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if (get_type() == cs_value_type::Null) {
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return;
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}
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set_null();
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}
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cs_float cs_value::force_float() {
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cs_float rf = 0.0f;
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switch (get_type()) {
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case cs_value_type::Int:
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rf = csv_get<cs_int>(p_stor);
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break;
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case cs_value_type::String:
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case cs_value_type::Macro:
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case cs_value_type::Cstring:
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rf = cs_parse_float(ostd::string_range(
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csv_get<char const *>(p_stor),
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csv_get<char const *>(p_stor) + p_len
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));
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break;
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case cs_value_type::Float:
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return csv_get<cs_float>(p_stor);
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default:
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break;
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}
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set_float(rf);
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return rf;
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}
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cs_int cs_value::force_int() {
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cs_int ri = 0;
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switch (get_type()) {
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case cs_value_type::Float:
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ri = csv_get<cs_float>(p_stor);
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break;
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case cs_value_type::String:
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case cs_value_type::Macro:
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case cs_value_type::Cstring:
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ri = cs_parse_int(ostd::string_range(
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csv_get<char const *>(p_stor),
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csv_get<char const *>(p_stor) + p_len
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));
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break;
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case cs_value_type::Int:
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return csv_get<cs_int>(p_stor);
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default:
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break;
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}
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set_int(ri);
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return ri;
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}
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ostd::string_range cs_value::force_str() {
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cs_string rs;
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switch (get_type()) {
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case cs_value_type::Float:
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rs = floatstr(csv_get<cs_float>(p_stor));
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break;
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case cs_value_type::Int:
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rs = intstr(csv_get<cs_int>(p_stor));
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break;
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case cs_value_type::Macro:
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case cs_value_type::Cstring:
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rs = ostd::string_range(
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csv_get<char const *>(p_stor),
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csv_get<char const *>(p_stor) + p_len
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);
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break;
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case cs_value_type::String:
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return ostd::string_range(
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csv_get<char const *>(p_stor),
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csv_get<char const *>(p_stor) + p_len
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);
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default:
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break;
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}
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set_str(std::move(rs));
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return ostd::string_range(
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csv_get<char const *>(p_stor),
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csv_get<char const *>(p_stor) + p_len
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);
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}
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cs_int cs_value::get_int() const {
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switch (get_type()) {
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case cs_value_type::Float:
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return cs_int(csv_get<cs_float>(p_stor));
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case cs_value_type::Int:
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return csv_get<cs_int>(p_stor);
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case cs_value_type::String:
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case cs_value_type::Macro:
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case cs_value_type::Cstring:
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return cs_parse_int(ostd::string_range(
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csv_get<char const *>(p_stor),
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csv_get<char const *>(p_stor) + p_len
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));
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default:
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break;
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}
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return 0;
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}
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cs_float cs_value::get_float() const {
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switch (get_type()) {
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case cs_value_type::Float:
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return csv_get<cs_float>(p_stor);
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case cs_value_type::Int:
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return cs_float(csv_get<cs_int>(p_stor));
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case cs_value_type::String:
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case cs_value_type::Macro:
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case cs_value_type::Cstring:
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return cs_parse_float(ostd::string_range(
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csv_get<char const *>(p_stor),
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csv_get<char const *>(p_stor) + p_len
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));
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default:
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break;
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}
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return 0.0f;
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}
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cs_bcode *cs_value::get_code() const {
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if (get_type() != cs_value_type::Code) {
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return nullptr;
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}
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return csv_get<cs_bcode *>(p_stor);
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}
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cs_ident *cs_value::get_ident() const {
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if (get_type() != cs_value_type::Ident) {
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return nullptr;
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}
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return csv_get<cs_ident *>(p_stor);
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}
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cs_string cs_value::get_str() const {
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switch (get_type()) {
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case cs_value_type::String:
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case cs_value_type::Macro:
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case cs_value_type::Cstring:
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return cs_string{csv_get<char const *>(p_stor), p_len};
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case cs_value_type::Int:
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return intstr(csv_get<cs_int>(p_stor));
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case cs_value_type::Float:
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return floatstr(csv_get<cs_float>(p_stor));
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default:
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break;
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}
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return cs_string("");
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}
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ostd::string_range cs_value::get_strr() const {
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switch (get_type()) {
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case cs_value_type::String:
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case cs_value_type::Macro:
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case cs_value_type::Cstring:
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return ostd::string_range(
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csv_get<char const *>(p_stor),
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csv_get<char const *>(p_stor)+ p_len
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);
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default:
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break;
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}
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return ostd::string_range();
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}
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void cs_value::get_val(cs_value &r) const {
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switch (get_type()) {
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case cs_value_type::String:
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case cs_value_type::Macro:
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case cs_value_type::Cstring:
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r.set_str(
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cs_string{csv_get<char const *>(p_stor), p_len}
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);
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break;
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case cs_value_type::Int:
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r.set_int(csv_get<cs_int>(p_stor));
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break;
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case cs_value_type::Float:
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r.set_float(csv_get<cs_float>(p_stor));
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break;
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default:
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r.set_null();
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break;
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}
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}
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OSTD_EXPORT bool cs_code_is_empty(cs_bcode *code) {
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if (!code) {
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return true;
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}
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return (
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*reinterpret_cast<uint32_t *>(code) & CsCodeOpMask
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) == CsCodeExit;
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}
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bool cs_value::code_is_empty() const {
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if (get_type() != cs_value_type::Code) {
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return true;
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}
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return cscript::cs_code_is_empty(csv_get<cs_bcode *>(p_stor));
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}
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static inline bool cs_get_bool(ostd::string_range s) {
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if (s.empty()) {
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return false;
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}
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ostd::string_range end = s;
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cs_int ival = cs_parse_int(end, &end);
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if (end.empty()) {
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return !!ival;
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}
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end = s;
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cs_float fval = cs_parse_float(end, &end);
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if (end.empty()) {
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return !!fval;
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}
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return true;
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}
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bool cs_value::get_bool() const {
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switch (get_type()) {
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case cs_value_type::Float:
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return csv_get<cs_float>(p_stor) != 0;
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case cs_value_type::Int:
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return csv_get<cs_int>(p_stor) != 0;
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case cs_value_type::String:
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case cs_value_type::Macro:
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case cs_value_type::Cstring:
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return cs_get_bool(ostd::string_range(
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csv_get<char const *>(p_stor),
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csv_get<char const *>(p_stor) + p_len
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));
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default:
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return false;
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}
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}
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/* stacked value for easy stack management */
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cs_stacked_value::cs_stacked_value(cs_ident *id):
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cs_value(), p_a(nullptr), p_stack(), p_pushed(false)
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{
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set_alias(id);
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}
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cs_stacked_value::~cs_stacked_value() {
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pop();
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static_cast<cs_value *>(this)->~cs_value();
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}
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cs_stacked_value &cs_stacked_value::operator=(cs_value const &v) {
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*static_cast<cs_value *>(this) = v;
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return *this;
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}
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cs_stacked_value &cs_stacked_value::operator=(cs_value &&v) {
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*static_cast<cs_value *>(this) = std::move(v);
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return *this;
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}
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bool cs_stacked_value::set_alias(cs_ident *id) {
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if (!id || !id->is_alias()) {
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return false;
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}
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p_a = static_cast<cs_alias *>(id);
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return true;
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}
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cs_alias *cs_stacked_value::get_alias() const {
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return p_a;
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}
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bool cs_stacked_value::has_alias() const {
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return p_a != nullptr;
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}
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bool cs_stacked_value::push() {
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if (!p_a) {
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return false;
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}
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cs_alias_internal::push_arg(p_a, *this, p_stack);
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p_pushed = true;
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return true;
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}
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bool cs_stacked_value::pop() {
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if (!p_pushed || !p_a) {
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return false;
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}
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cs_alias_internal::pop_arg(p_a);
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p_pushed = false;
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return true;
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}
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} /* namespace cscript */
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