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Copy pathconversion.rs
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1001 lines (899 loc) · 30.2 KB
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Copy pathconversion.rs
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1001 lines (899 loc) · 30.2 KB
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use std::borrow::Cow;
use std::collections::{BTreeMap, BTreeSet, HashMap, HashSet};
use std::convert::TryInto;
use std::ffi::{CStr, CString};
use std::hash::{BuildHasher, Hash};
use std::os::raw::c_int;
use std::string::String as StdString;
use std::{slice, str};
use bstr::{BStr, BString};
use num_traits::cast;
use crate::error::{Error, Result};
use crate::function::Function;
use crate::lua::Lua;
use crate::string::String;
use crate::table::Table;
use crate::thread::Thread;
use crate::types::{LightUserData, MaybeSend, RegistryKey};
use crate::userdata::{AnyUserData, UserData, UserDataRef, UserDataRefMut};
use crate::value::{FromLua, IntoLua, Nil, Value};
#[cfg(all(feature = "unstable", any(not(feature = "send"), doc)))]
use crate::{
function::OwnedFunction, string::OwnedString, table::OwnedTable, thread::OwnedThread,
userdata::OwnedAnyUserData,
};
impl<'lua> IntoLua<'lua> for Value<'lua> {
#[inline]
fn into_lua(self, _: &'lua Lua) -> Result<Value<'lua>> {
Ok(self)
}
}
impl<'lua> FromLua<'lua> for Value<'lua> {
#[inline]
fn from_lua(lua_value: Value<'lua>, _: &'lua Lua) -> Result<Self> {
Ok(lua_value)
}
}
impl<'lua> IntoLua<'lua> for String<'lua> {
#[inline]
fn into_lua(self, _: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::String(self))
}
}
impl<'lua> IntoLua<'lua> for &String<'lua> {
#[inline]
fn into_lua(self, _: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::String(self.clone()))
}
#[inline]
unsafe fn push_into_stack(self, lua: &'lua Lua) -> Result<()> {
Ok(lua.push_ref(&self.0))
}
}
impl<'lua> FromLua<'lua> for String<'lua> {
#[inline]
fn from_lua(value: Value<'lua>, lua: &'lua Lua) -> Result<String<'lua>> {
let ty = value.type_name();
lua.coerce_string(value)?
.ok_or_else(|| Error::FromLuaConversionError {
from: ty,
to: "string",
message: Some("expected string or number".to_string()),
})
}
}
#[cfg(all(feature = "unstable", any(not(feature = "send"), doc)))]
#[cfg_attr(docsrs, doc(cfg(all(feature = "unstable", not(feature = "send")))))]
impl<'lua> IntoLua<'lua> for OwnedString {
#[inline]
fn into_lua(self, lua: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::String(String(lua.adopt_owned_ref(self.0))))
}
}
#[cfg(all(feature = "unstable", any(not(feature = "send"), doc)))]
#[cfg_attr(docsrs, doc(cfg(all(feature = "unstable", not(feature = "send")))))]
impl<'lua> IntoLua<'lua> for &OwnedString {
#[inline]
fn into_lua(self, lua: &'lua Lua) -> Result<Value<'lua>> {
OwnedString::into_lua(self.clone(), lua)
}
#[inline]
unsafe fn push_into_stack(self, lua: &'lua Lua) -> Result<()> {
Ok(lua.push_owned_ref(&self.0))
}
}
#[cfg(all(feature = "unstable", any(not(feature = "send"), doc)))]
#[cfg_attr(docsrs, doc(cfg(all(feature = "unstable", not(feature = "send")))))]
impl<'lua> FromLua<'lua> for OwnedString {
#[inline]
fn from_lua(value: Value<'lua>, lua: &'lua Lua) -> Result<OwnedString> {
String::from_lua(value, lua).map(|s| s.into_owned())
}
}
impl<'lua> IntoLua<'lua> for Table<'lua> {
#[inline]
fn into_lua(self, _: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::Table(self))
}
}
impl<'lua> IntoLua<'lua> for &Table<'lua> {
#[inline]
fn into_lua(self, _: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::Table(self.clone()))
}
#[inline]
unsafe fn push_into_stack(self, lua: &'lua Lua) -> Result<()> {
Ok(lua.push_ref(&self.0))
}
}
impl<'lua> FromLua<'lua> for Table<'lua> {
#[inline]
fn from_lua(value: Value<'lua>, _: &'lua Lua) -> Result<Table<'lua>> {
match value {
Value::Table(table) => Ok(table),
_ => Err(Error::FromLuaConversionError {
from: value.type_name(),
to: "table",
message: None,
}),
}
}
}
#[cfg(all(feature = "unstable", any(not(feature = "send"), doc)))]
#[cfg_attr(docsrs, doc(cfg(all(feature = "unstable", not(feature = "send")))))]
impl<'lua> IntoLua<'lua> for OwnedTable {
#[inline]
fn into_lua(self, lua: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::Table(Table(lua.adopt_owned_ref(self.0))))
}
}
#[cfg(all(feature = "unstable", any(not(feature = "send"), doc)))]
#[cfg_attr(docsrs, doc(cfg(all(feature = "unstable", not(feature = "send")))))]
impl<'lua> IntoLua<'lua> for &OwnedTable {
#[inline]
fn into_lua(self, lua: &'lua Lua) -> Result<Value<'lua>> {
OwnedTable::into_lua(self.clone(), lua)
}
#[inline]
unsafe fn push_into_stack(self, lua: &'lua Lua) -> Result<()> {
Ok(lua.push_owned_ref(&self.0))
}
}
#[cfg(all(feature = "unstable", any(not(feature = "send"), doc)))]
#[cfg_attr(docsrs, doc(cfg(all(feature = "unstable", not(feature = "send")))))]
impl<'lua> FromLua<'lua> for OwnedTable {
#[inline]
fn from_lua(value: Value<'lua>, lua: &'lua Lua) -> Result<OwnedTable> {
Table::from_lua(value, lua).map(|s| s.into_owned())
}
}
impl<'lua> IntoLua<'lua> for Function<'lua> {
#[inline]
fn into_lua(self, _: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::Function(self))
}
}
impl<'lua> IntoLua<'lua> for &Function<'lua> {
#[inline]
fn into_lua(self, _: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::Function(self.clone()))
}
#[inline]
unsafe fn push_into_stack(self, lua: &'lua Lua) -> Result<()> {
Ok(lua.push_ref(&self.0))
}
}
impl<'lua> FromLua<'lua> for Function<'lua> {
#[inline]
fn from_lua(value: Value<'lua>, _: &'lua Lua) -> Result<Function<'lua>> {
match value {
Value::Function(table) => Ok(table),
_ => Err(Error::FromLuaConversionError {
from: value.type_name(),
to: "function",
message: None,
}),
}
}
}
#[cfg(all(feature = "unstable", any(not(feature = "send"), doc)))]
#[cfg_attr(docsrs, doc(cfg(all(feature = "unstable", not(feature = "send")))))]
impl<'lua> IntoLua<'lua> for OwnedFunction {
#[inline]
fn into_lua(self, lua: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::Function(Function(lua.adopt_owned_ref(self.0))))
}
}
#[cfg(all(feature = "unstable", any(not(feature = "send"), doc)))]
#[cfg_attr(docsrs, doc(cfg(all(feature = "unstable", not(feature = "send")))))]
impl<'lua> IntoLua<'lua> for &OwnedFunction {
#[inline]
fn into_lua(self, lua: &'lua Lua) -> Result<Value<'lua>> {
OwnedFunction::into_lua(self.clone(), lua)
}
#[inline]
unsafe fn push_into_stack(self, lua: &'lua Lua) -> Result<()> {
Ok(lua.push_owned_ref(&self.0))
}
}
#[cfg(all(feature = "unstable", any(not(feature = "send"), doc)))]
#[cfg_attr(docsrs, doc(cfg(all(feature = "unstable", not(feature = "send")))))]
impl<'lua> FromLua<'lua> for OwnedFunction {
#[inline]
fn from_lua(value: Value<'lua>, lua: &'lua Lua) -> Result<OwnedFunction> {
Function::from_lua(value, lua).map(|s| s.into_owned())
}
}
impl<'lua> IntoLua<'lua> for Thread<'lua> {
#[inline]
fn into_lua(self, _: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::Thread(self))
}
}
impl<'lua> IntoLua<'lua> for &Thread<'lua> {
#[inline]
fn into_lua(self, _: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::Thread(self.clone()))
}
#[inline]
unsafe fn push_into_stack(self, lua: &'lua Lua) -> Result<()> {
Ok(lua.push_ref(&self.0))
}
}
impl<'lua> FromLua<'lua> for Thread<'lua> {
#[inline]
fn from_lua(value: Value<'lua>, _: &'lua Lua) -> Result<Thread<'lua>> {
match value {
Value::Thread(t) => Ok(t),
_ => Err(Error::FromLuaConversionError {
from: value.type_name(),
to: "thread",
message: None,
}),
}
}
}
#[cfg(all(feature = "unstable", any(not(feature = "send"), doc)))]
#[cfg_attr(docsrs, doc(cfg(all(feature = "unstable", not(feature = "send")))))]
impl<'lua> IntoLua<'lua> for OwnedThread {
#[inline]
fn into_lua(self, lua: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::Thread(Thread(lua.adopt_owned_ref(self.0), self.1)))
}
}
#[cfg(all(feature = "unstable", any(not(feature = "send"), doc)))]
#[cfg_attr(docsrs, doc(cfg(all(feature = "unstable", not(feature = "send")))))]
impl<'lua> IntoLua<'lua> for &OwnedThread {
#[inline]
fn into_lua(self, lua: &'lua Lua) -> Result<Value<'lua>> {
OwnedThread::into_lua(self.clone(), lua)
}
#[inline]
unsafe fn push_into_stack(self, lua: &'lua Lua) -> Result<()> {
Ok(lua.push_owned_ref(&self.0))
}
}
#[cfg(all(feature = "unstable", any(not(feature = "send"), doc)))]
#[cfg_attr(docsrs, doc(cfg(all(feature = "unstable", not(feature = "send")))))]
impl<'lua> FromLua<'lua> for OwnedThread {
#[inline]
fn from_lua(value: Value<'lua>, lua: &'lua Lua) -> Result<OwnedThread> {
Thread::from_lua(value, lua).map(|s| s.into_owned())
}
}
impl<'lua> IntoLua<'lua> for AnyUserData<'lua> {
#[inline]
fn into_lua(self, _: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::UserData(self))
}
}
impl<'lua> IntoLua<'lua> for &AnyUserData<'lua> {
#[inline]
fn into_lua(self, _: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::UserData(self.clone()))
}
#[inline]
unsafe fn push_into_stack(self, lua: &'lua Lua) -> Result<()> {
Ok(lua.push_ref(&self.0))
}
}
impl<'lua> FromLua<'lua> for AnyUserData<'lua> {
#[inline]
fn from_lua(value: Value<'lua>, _: &'lua Lua) -> Result<AnyUserData<'lua>> {
match value {
Value::UserData(ud) => Ok(ud),
_ => Err(Error::FromLuaConversionError {
from: value.type_name(),
to: "userdata",
message: None,
}),
}
}
}
#[cfg(all(feature = "unstable", any(not(feature = "send"), doc)))]
#[cfg_attr(docsrs, doc(cfg(all(feature = "unstable", not(feature = "send")))))]
impl<'lua> IntoLua<'lua> for OwnedAnyUserData {
#[inline]
fn into_lua(self, lua: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::UserData(AnyUserData(
lua.adopt_owned_ref(self.0),
self.1,
)))
}
}
#[cfg(all(feature = "unstable", any(not(feature = "send"), doc)))]
#[cfg_attr(docsrs, doc(cfg(all(feature = "unstable", not(feature = "send")))))]
impl<'lua> IntoLua<'lua> for &OwnedAnyUserData {
#[inline]
fn into_lua(self, lua: &'lua Lua) -> Result<Value<'lua>> {
OwnedAnyUserData::into_lua(self.clone(), lua)
}
#[inline]
unsafe fn push_into_stack(self, lua: &'lua Lua) -> Result<()> {
Ok(lua.push_owned_ref(&self.0))
}
}
#[cfg(all(feature = "unstable", any(not(feature = "send"), doc)))]
#[cfg_attr(docsrs, doc(cfg(all(feature = "unstable", not(feature = "send")))))]
impl<'lua> FromLua<'lua> for OwnedAnyUserData {
#[inline]
fn from_lua(value: Value<'lua>, lua: &'lua Lua) -> Result<OwnedAnyUserData> {
AnyUserData::from_lua(value, lua).map(|s| s.into_owned())
}
}
impl<'lua, T: UserData + MaybeSend + 'static> IntoLua<'lua> for T {
#[inline]
fn into_lua(self, lua: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::UserData(lua.create_userdata(self)?))
}
}
impl<'lua, T: 'static> FromLua<'lua> for UserDataRef<'lua, T> {
#[inline]
fn from_lua(value: Value<'lua>, _: &'lua Lua) -> Result<Self> {
Self::from_value(value)
}
}
impl<'lua, T: 'static> FromLua<'lua> for UserDataRefMut<'lua, T> {
#[inline]
fn from_lua(value: Value<'lua>, _: &'lua Lua) -> Result<Self> {
Self::from_value(value)
}
}
impl<'lua> IntoLua<'lua> for Error {
#[inline]
fn into_lua(self, _: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::Error(self))
}
}
impl<'lua> FromLua<'lua> for Error {
#[inline]
fn from_lua(value: Value<'lua>, lua: &'lua Lua) -> Result<Error> {
match value {
Value::Error(err) => Ok(err),
val => Ok(Error::runtime(
lua.coerce_string(val)?
.and_then(|s| Some(s.to_str().ok()?.to_owned()))
.unwrap_or_else(|| "<unprintable error>".to_owned()),
)),
}
}
}
impl<'lua> IntoLua<'lua> for &RegistryKey {
#[inline]
fn into_lua(self, lua: &'lua Lua) -> Result<Value<'lua>> {
lua.registry_value(self)
}
unsafe fn push_into_stack(self, lua: &'lua Lua) -> Result<()> {
if !lua.owns_registry_value(self) {
return Err(Error::MismatchedRegistryKey);
}
if self.is_nil() {
ffi::lua_pushnil(lua.state());
} else {
ffi::lua_rawgeti(lua.state(), ffi::LUA_REGISTRYINDEX, self.registry_id as _);
}
Ok(())
}
}
impl<'lua> IntoLua<'lua> for bool {
#[inline]
fn into_lua(self, _: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::Boolean(self))
}
#[inline]
unsafe fn push_into_stack(self, lua: &'lua Lua) -> Result<()> {
ffi::lua_pushboolean(lua.state(), self as c_int);
Ok(())
}
}
impl<'lua> FromLua<'lua> for bool {
#[inline]
fn from_lua(v: Value<'lua>, _: &'lua Lua) -> Result<Self> {
match v {
Value::Nil => Ok(false),
Value::Boolean(b) => Ok(b),
_ => Ok(true),
}
}
unsafe fn from_stack(idx: c_int, lua: &'lua Lua) -> Result<Self> {
Ok(ffi::lua_toboolean(lua.state(), idx) != 0)
}
}
impl<'lua> IntoLua<'lua> for LightUserData {
#[inline]
fn into_lua(self, _: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::LightUserData(self))
}
}
impl<'lua> FromLua<'lua> for LightUserData {
#[inline]
fn from_lua(value: Value<'lua>, _: &'lua Lua) -> Result<Self> {
match value {
Value::LightUserData(ud) => Ok(ud),
_ => Err(Error::FromLuaConversionError {
from: value.type_name(),
to: "light userdata",
message: None,
}),
}
}
}
#[cfg(feature = "luau")]
impl<'lua> IntoLua<'lua> for crate::types::Vector {
#[inline]
fn into_lua(self, _: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::Vector(self))
}
}
#[cfg(feature = "luau")]
impl<'lua> FromLua<'lua> for crate::types::Vector {
#[inline]
fn from_lua(value: Value<'lua>, _: &'lua Lua) -> Result<Self> {
match value {
Value::Vector(v) => Ok(v),
_ => Err(Error::FromLuaConversionError {
from: value.type_name(),
to: "vector",
message: None,
}),
}
}
}
impl<'lua> IntoLua<'lua> for StdString {
#[inline]
fn into_lua(self, lua: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::String(lua.create_string(&self)?))
}
#[inline]
unsafe fn push_into_stack(self, lua: &'lua Lua) -> Result<()> {
push_bytes_into_stack(self, lua)
}
}
impl<'lua> FromLua<'lua> for StdString {
#[inline]
fn from_lua(value: Value<'lua>, lua: &'lua Lua) -> Result<Self> {
let ty = value.type_name();
Ok(lua
.coerce_string(value)?
.ok_or_else(|| Error::FromLuaConversionError {
from: ty,
to: "String",
message: Some("expected string or number".to_string()),
})?
.to_str()?
.to_owned())
}
#[inline]
unsafe fn from_stack(idx: c_int, lua: &'lua Lua) -> Result<Self> {
let state = lua.state();
if ffi::lua_type(state, idx) == ffi::LUA_TSTRING {
let mut size = 0;
let data = ffi::lua_tolstring(state, idx, &mut size);
let bytes = slice::from_raw_parts(data as *const u8, size);
return str::from_utf8(bytes).map(|s| s.to_owned()).map_err(|e| {
Error::FromLuaConversionError {
from: "string",
to: "String",
message: Some(e.to_string()),
}
});
}
// Fallback to default
Self::from_lua(lua.stack_value(idx), lua)
}
}
impl<'lua> IntoLua<'lua> for &str {
#[inline]
fn into_lua(self, lua: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::String(lua.create_string(self)?))
}
#[inline]
unsafe fn push_into_stack(self, lua: &'lua Lua) -> Result<()> {
push_bytes_into_stack(self, lua)
}
}
impl<'lua> IntoLua<'lua> for Cow<'_, str> {
#[inline]
fn into_lua(self, lua: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::String(lua.create_string(self.as_bytes())?))
}
}
impl<'lua> IntoLua<'lua> for Box<str> {
#[inline]
fn into_lua(self, lua: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::String(lua.create_string(&*self)?))
}
}
impl<'lua> FromLua<'lua> for Box<str> {
#[inline]
fn from_lua(value: Value<'lua>, lua: &'lua Lua) -> Result<Self> {
let ty = value.type_name();
Ok(lua
.coerce_string(value)?
.ok_or_else(|| Error::FromLuaConversionError {
from: ty,
to: "Box<str>",
message: Some("expected string or number".to_string()),
})?
.to_str()?
.to_owned()
.into_boxed_str())
}
}
impl<'lua> IntoLua<'lua> for CString {
#[inline]
fn into_lua(self, lua: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::String(lua.create_string(self.as_bytes())?))
}
}
impl<'lua> FromLua<'lua> for CString {
#[inline]
fn from_lua(value: Value<'lua>, lua: &'lua Lua) -> Result<Self> {
let ty = value.type_name();
let string = lua
.coerce_string(value)?
.ok_or_else(|| Error::FromLuaConversionError {
from: ty,
to: "CString",
message: Some("expected string or number".to_string()),
})?;
match CStr::from_bytes_with_nul(string.as_bytes_with_nul()) {
Ok(s) => Ok(s.into()),
Err(_) => Err(Error::FromLuaConversionError {
from: ty,
to: "CString",
message: Some("invalid C-style string".to_string()),
}),
}
}
}
impl<'lua> IntoLua<'lua> for &CStr {
#[inline]
fn into_lua(self, lua: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::String(lua.create_string(self.to_bytes())?))
}
}
impl<'lua> IntoLua<'lua> for Cow<'_, CStr> {
#[inline]
fn into_lua(self, lua: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::String(lua.create_string(self.to_bytes())?))
}
}
impl<'lua> IntoLua<'lua> for BString {
#[inline]
fn into_lua(self, lua: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::String(lua.create_string(&self)?))
}
}
impl<'lua> FromLua<'lua> for BString {
#[inline]
fn from_lua(value: Value<'lua>, lua: &'lua Lua) -> Result<Self> {
let ty = value.type_name();
Ok(BString::from(
lua.coerce_string(value)?
.ok_or_else(|| Error::FromLuaConversionError {
from: ty,
to: "BString",
message: Some("expected string or number".to_string()),
})?
.as_bytes()
.to_vec(),
))
}
}
impl<'lua> IntoLua<'lua> for &BStr {
#[inline]
fn into_lua(self, lua: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::String(lua.create_string(self)?))
}
}
#[inline]
unsafe fn push_bytes_into_stack<'lua, T>(this: T, lua: &'lua Lua) -> Result<()>
where
T: IntoLua<'lua> + AsRef<[u8]>,
{
let bytes = this.as_ref();
if lua.unlikely_memory_error() && bytes.len() < (1 << 30) {
// Fast path: push directly into the Lua stack.
ffi::lua_pushlstring(lua.state(), bytes.as_ptr() as *const _, bytes.len());
return Ok(());
}
// Fallback to default
lua.push_value(T::into_lua(this, lua)?)
}
macro_rules! lua_convert_int {
($x:ty) => {
impl<'lua> IntoLua<'lua> for $x {
#[inline]
fn into_lua(self, _: &'lua Lua) -> Result<Value<'lua>> {
cast(self)
.map(Value::Integer)
.or_else(|| cast(self).map(Value::Number))
// This is impossible error because conversion to Number never fails
.ok_or_else(|| Error::ToLuaConversionError {
from: stringify!($x),
to: "number",
message: Some("out of range".to_owned()),
})
}
}
impl<'lua> FromLua<'lua> for $x {
#[inline]
fn from_lua(value: Value<'lua>, lua: &'lua Lua) -> Result<Self> {
let ty = value.type_name();
(match value {
Value::Integer(i) => cast(i),
Value::Number(n) => cast(n),
_ => {
if let Some(i) = lua.coerce_integer(value.clone())? {
cast(i)
} else {
cast(lua.coerce_number(value)?.ok_or_else(|| {
Error::FromLuaConversionError {
from: ty,
to: stringify!($x),
message: Some(
"expected number or string coercible to number".to_string(),
),
}
})?)
}
}
})
.ok_or_else(|| Error::FromLuaConversionError {
from: ty,
to: stringify!($x),
message: Some("out of range".to_owned()),
})
}
}
};
}
lua_convert_int!(i8);
lua_convert_int!(u8);
lua_convert_int!(i16);
lua_convert_int!(u16);
lua_convert_int!(i32);
lua_convert_int!(u32);
lua_convert_int!(i64);
lua_convert_int!(u64);
lua_convert_int!(i128);
lua_convert_int!(u128);
lua_convert_int!(isize);
lua_convert_int!(usize);
macro_rules! lua_convert_float {
($x:ty) => {
impl<'lua> IntoLua<'lua> for $x {
#[inline]
fn into_lua(self, _: &'lua Lua) -> Result<Value<'lua>> {
cast(self)
.ok_or_else(|| Error::ToLuaConversionError {
from: stringify!($x),
to: "number",
message: Some("out of range".to_string()),
})
.map(Value::Number)
}
}
impl<'lua> FromLua<'lua> for $x {
#[inline]
fn from_lua(value: Value<'lua>, lua: &'lua Lua) -> Result<Self> {
let ty = value.type_name();
lua.coerce_number(value)?
.ok_or_else(|| Error::FromLuaConversionError {
from: ty,
to: stringify!($x),
message: Some("expected number or string coercible to number".to_string()),
})
.and_then(|n| {
cast(n).ok_or_else(|| Error::FromLuaConversionError {
from: ty,
to: stringify!($x),
message: Some("number out of range".to_string()),
})
})
}
}
};
}
lua_convert_float!(f32);
lua_convert_float!(f64);
impl<'lua, T> IntoLua<'lua> for &[T]
where
T: IntoLua<'lua> + Clone,
{
#[inline]
fn into_lua(self, lua: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::Table(
lua.create_sequence_from(self.iter().cloned())?,
))
}
}
impl<'lua, T, const N: usize> IntoLua<'lua> for [T; N]
where
T: IntoLua<'lua>,
{
#[inline]
fn into_lua(self, lua: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::Table(lua.create_sequence_from(self)?))
}
}
impl<'lua, T, const N: usize> FromLua<'lua> for [T; N]
where
T: FromLua<'lua>,
{
#[inline]
fn from_lua(value: Value<'lua>, _lua: &'lua Lua) -> Result<Self> {
match value {
#[cfg(feature = "luau")]
#[rustfmt::skip]
Value::Vector(v) if N == crate::types::Vector::SIZE => unsafe {
use std::{mem, ptr};
let mut arr: [mem::MaybeUninit<T>; N] = mem::MaybeUninit::uninit().assume_init();
ptr::write(arr[0].as_mut_ptr() , T::from_lua(Value::Number(v.x() as _), _lua)?);
ptr::write(arr[1].as_mut_ptr(), T::from_lua(Value::Number(v.y() as _), _lua)?);
ptr::write(arr[2].as_mut_ptr(), T::from_lua(Value::Number(v.z() as _), _lua)?);
#[cfg(feature = "luau-vector4")]
ptr::write(arr[3].as_mut_ptr(), T::from_lua(Value::Number(v.w() as _), _lua)?);
Ok(mem::transmute_copy(&arr))
},
Value::Table(table) => {
let vec = table.sequence_values().collect::<Result<Vec<_>>>()?;
vec.try_into()
.map_err(|vec: Vec<T>| Error::FromLuaConversionError {
from: "table",
to: "Array",
message: Some(format!("expected table of length {}, got {}", N, vec.len())),
})
}
_ => Err(Error::FromLuaConversionError {
from: value.type_name(),
to: "Array",
message: Some("expected table".to_string()),
}),
}
}
}
impl<'lua, T: IntoLua<'lua>> IntoLua<'lua> for Box<[T]> {
#[inline]
fn into_lua(self, lua: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::Table(lua.create_sequence_from(self.into_vec())?))
}
}
impl<'lua, T: FromLua<'lua>> FromLua<'lua> for Box<[T]> {
#[inline]
fn from_lua(value: Value<'lua>, lua: &'lua Lua) -> Result<Self> {
Ok(Vec::<T>::from_lua(value, lua)?.into_boxed_slice())
}
}
impl<'lua, T: IntoLua<'lua>> IntoLua<'lua> for Vec<T> {
#[inline]
fn into_lua(self, lua: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::Table(lua.create_sequence_from(self)?))
}
}
impl<'lua, T: FromLua<'lua>> FromLua<'lua> for Vec<T> {
#[inline]
fn from_lua(value: Value<'lua>, _lua: &'lua Lua) -> Result<Self> {
match value {
Value::Table(table) => table.sequence_values().collect(),
_ => Err(Error::FromLuaConversionError {
from: value.type_name(),
to: "Vec",
message: Some("expected table".to_string()),
}),
}
}
}
impl<'lua, K: Eq + Hash + IntoLua<'lua>, V: IntoLua<'lua>, S: BuildHasher> IntoLua<'lua>
for HashMap<K, V, S>
{
#[inline]
fn into_lua(self, lua: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::Table(lua.create_table_from(self)?))
}
}
impl<'lua, K: Eq + Hash + FromLua<'lua>, V: FromLua<'lua>, S: BuildHasher + Default> FromLua<'lua>
for HashMap<K, V, S>
{
#[inline]
fn from_lua(value: Value<'lua>, _: &'lua Lua) -> Result<Self> {
if let Value::Table(table) = value {
table.pairs().collect()
} else {
Err(Error::FromLuaConversionError {
from: value.type_name(),
to: "HashMap",
message: Some("expected table".to_string()),
})
}
}
}
impl<'lua, K: Ord + IntoLua<'lua>, V: IntoLua<'lua>> IntoLua<'lua> for BTreeMap<K, V> {
#[inline]
fn into_lua(self, lua: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::Table(lua.create_table_from(self)?))
}
}
impl<'lua, K: Ord + FromLua<'lua>, V: FromLua<'lua>> FromLua<'lua> for BTreeMap<K, V> {
#[inline]
fn from_lua(value: Value<'lua>, _: &'lua Lua) -> Result<Self> {
if let Value::Table(table) = value {
table.pairs().collect()
} else {
Err(Error::FromLuaConversionError {
from: value.type_name(),
to: "BTreeMap",
message: Some("expected table".to_string()),
})
}
}
}
impl<'lua, T: Eq + Hash + IntoLua<'lua>, S: BuildHasher> IntoLua<'lua> for HashSet<T, S> {
#[inline]
fn into_lua(self, lua: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::Table(lua.create_table_from(
self.into_iter().map(|val| (val, true)),
)?))
}
}
impl<'lua, T: Eq + Hash + FromLua<'lua>, S: BuildHasher + Default> FromLua<'lua> for HashSet<T, S> {
#[inline]
fn from_lua(value: Value<'lua>, _: &'lua Lua) -> Result<Self> {
match value {
Value::Table(table) if table.raw_len() > 0 => table.sequence_values().collect(),
Value::Table(table) => table
.pairs::<T, Value<'lua>>()
.map(|res| res.map(|(k, _)| k))
.collect(),
_ => Err(Error::FromLuaConversionError {
from: value.type_name(),
to: "HashSet",
message: Some("expected table".to_string()),
}),
}
}
}
impl<'lua, T: Ord + IntoLua<'lua>> IntoLua<'lua> for BTreeSet<T> {
#[inline]
fn into_lua(self, lua: &'lua Lua) -> Result<Value<'lua>> {
Ok(Value::Table(lua.create_table_from(
self.into_iter().map(|val| (val, true)),
)?))
}
}
impl<'lua, T: Ord + FromLua<'lua>> FromLua<'lua> for BTreeSet<T> {
#[inline]
fn from_lua(value: Value<'lua>, _: &'lua Lua) -> Result<Self> {
match value {
Value::Table(table) if table.raw_len() > 0 => table.sequence_values().collect(),
Value::Table(table) => table
.pairs::<T, Value<'lua>>()
.map(|res| res.map(|(k, _)| k))
.collect(),
_ => Err(Error::FromLuaConversionError {
from: value.type_name(),
to: "BTreeSet",
message: Some("expected table".to_string()),
}),
}
}
}
impl<'lua, T: IntoLua<'lua>> IntoLua<'lua> for Option<T> {
#[inline]
fn into_lua(self, lua: &'lua Lua) -> Result<Value<'lua>> {
match self {
Some(val) => val.into_lua(lua),
None => Ok(Nil),
}
}
}
impl<'lua, T: FromLua<'lua>> FromLua<'lua> for Option<T> {
#[inline]
fn from_lua(value: Value<'lua>, lua: &'lua Lua) -> Result<Self> {
match value {
Nil => Ok(None),
value => Ok(Some(T::from_lua(value, lua)?)),
}
}