756 lines
20 KiB
Rust
756 lines
20 KiB
Rust
extern crate failure;
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extern crate rlua;
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use std::iter::FromIterator;
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use std::panic::catch_unwind;
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use std::sync::Arc;
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use std::{error, f32, f64, fmt};
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use failure::err_msg;
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use rlua::{
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Error, ExternalError, Function, Lua, Nil, Result, String, Table, UserData, Value, Variadic,
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};
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#[test]
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fn test_load() {
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let lua = Lua::new();
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let func = lua.load("return 1+2", None).unwrap();
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let result: i32 = func.call(()).unwrap();
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assert_eq!(result, 3);
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assert!(lua.load("§$%§&$%&", None).is_err());
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}
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#[test]
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fn test_debug() {
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let lua = unsafe { Lua::new_with_debug() };
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match lua.eval("debug", None).unwrap() {
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Value::Table(_) => {}
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val => panic!("Expected table for debug library, got {:#?}", val),
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}
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let traceback_output = lua.eval::<String>("debug.traceback()", None).unwrap();
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assert_eq!(
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traceback_output.to_str().unwrap().split("\n").next(),
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"stack traceback:".into()
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);
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}
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#[test]
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fn test_exec() {
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let lua = Lua::new();
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let globals = lua.globals();
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lua.exec::<()>(
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r#"
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res = 'foo'..'bar'
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"#,
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None,
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).unwrap();
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assert_eq!(globals.get::<_, String>("res").unwrap(), "foobar");
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let module: Table = lua
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.exec(
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r#"
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local module = {}
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function module.func()
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return "hello"
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end
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return module
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"#,
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None,
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).unwrap();
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assert!(module.contains_key("func").unwrap());
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assert_eq!(
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module
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.get::<_, Function>("func")
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.unwrap()
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.call::<_, String>(())
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.unwrap(),
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"hello"
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);
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}
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#[test]
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fn test_eval() {
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let lua = Lua::new();
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assert_eq!(lua.eval::<i32>("1 + 1", None).unwrap(), 2);
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assert_eq!(lua.eval::<bool>("false == false", None).unwrap(), true);
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assert_eq!(lua.eval::<i32>("return 1 + 2", None).unwrap(), 3);
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match lua.eval::<()>("if true then", None) {
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Err(Error::SyntaxError {
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incomplete_input: true,
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..
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}) => {}
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r => panic!(
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"expected SyntaxError with incomplete_input=true, got {:?}",
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r
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),
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}
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}
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#[test]
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fn test_lua_multi() {
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let lua = Lua::new();
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let globals = lua.globals();
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lua.exec::<()>(
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r#"
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function concat(arg1, arg2)
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return arg1 .. arg2
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end
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function mreturn()
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return 1, 2, 3, 4, 5, 6
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end
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"#,
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None,
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).unwrap();
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let concat = globals.get::<_, Function>("concat").unwrap();
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let mreturn = globals.get::<_, Function>("mreturn").unwrap();
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assert_eq!(concat.call::<_, String>(("foo", "bar")).unwrap(), "foobar");
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let (a, b) = mreturn.call::<_, (u64, u64)>(()).unwrap();
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assert_eq!((a, b), (1, 2));
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let (a, b, v) = mreturn.call::<_, (u64, u64, Variadic<u64>)>(()).unwrap();
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assert_eq!((a, b), (1, 2));
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assert_eq!(v[..], [3, 4, 5, 6]);
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}
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#[test]
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fn test_coercion() {
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let lua = Lua::new();
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let globals = lua.globals();
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lua.exec::<()>(
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r#"
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int = 123
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str = "123"
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num = 123.0
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"#,
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None,
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).unwrap();
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assert_eq!(globals.get::<_, String>("int").unwrap(), "123");
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assert_eq!(globals.get::<_, i32>("str").unwrap(), 123);
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assert_eq!(globals.get::<_, i32>("num").unwrap(), 123);
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}
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#[test]
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fn test_error() {
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#[derive(Debug)]
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pub struct TestError;
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impl fmt::Display for TestError {
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fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
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write!(fmt, "test error")
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}
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}
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impl error::Error for TestError {
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fn description(&self) -> &str {
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"test error"
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}
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fn cause(&self) -> Option<&error::Error> {
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None
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}
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}
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let lua = Lua::new();
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let globals = lua.globals();
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lua.exec::<()>(
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r#"
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function no_error()
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end
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function lua_error()
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error("this is a lua error")
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end
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function rust_error()
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rust_error_function()
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end
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function return_error()
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local status, res = pcall(rust_error_function)
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assert(not status)
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return res
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end
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function return_string_error()
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return "this should be converted to an error"
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end
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function test_pcall()
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local testvar = 0
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pcall(function(arg)
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testvar = testvar + arg
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error("should be ignored")
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end, 3)
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local function handler(err)
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testvar = testvar + err
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return "should be ignored"
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end
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local status, res = xpcall(function()
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error(5)
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end, handler)
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assert(not status)
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if testvar ~= 8 then
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error("testvar had the wrong value, pcall / xpcall misbehaving "..testvar)
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end
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end
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function understand_recursion()
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understand_recursion()
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end
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"#,
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None,
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).unwrap();
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let rust_error_function = lua
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.create_function(|_, ()| -> Result<()> { Err(TestError.to_lua_err()) })
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.unwrap();
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globals
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.set("rust_error_function", rust_error_function)
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.unwrap();
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let no_error = globals.get::<_, Function>("no_error").unwrap();
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let lua_error = globals.get::<_, Function>("lua_error").unwrap();
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let rust_error = globals.get::<_, Function>("rust_error").unwrap();
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let return_error = globals.get::<_, Function>("return_error").unwrap();
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let return_string_error = globals.get::<_, Function>("return_string_error").unwrap();
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let test_pcall = globals.get::<_, Function>("test_pcall").unwrap();
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let understand_recursion = globals.get::<_, Function>("understand_recursion").unwrap();
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assert!(no_error.call::<_, ()>(()).is_ok());
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match lua_error.call::<_, ()>(()) {
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Err(Error::RuntimeError(_)) => {}
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Err(_) => panic!("error is not RuntimeError kind"),
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_ => panic!("error not returned"),
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}
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match rust_error.call::<_, ()>(()) {
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Err(Error::CallbackError { .. }) => {}
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Err(_) => panic!("error is not CallbackError kind"),
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_ => panic!("error not returned"),
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}
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match return_error.call::<_, Value>(()) {
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Ok(Value::Error(_)) => {}
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_ => panic!("Value::Error not returned"),
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}
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assert!(return_string_error.call::<_, Error>(()).is_ok());
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match lua.eval::<()>("if youre happy and you know it syntax error", None) {
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Err(Error::SyntaxError {
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incomplete_input: false,
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..
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}) => {}
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Err(_) => panic!("error is not LuaSyntaxError::Syntax kind"),
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_ => panic!("error not returned"),
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}
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match lua.eval::<()>("function i_will_finish_what_i()", None) {
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Err(Error::SyntaxError {
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incomplete_input: true,
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..
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}) => {}
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Err(_) => panic!("error is not LuaSyntaxError::IncompleteStatement kind"),
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_ => panic!("error not returned"),
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}
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test_pcall.call::<_, ()>(()).unwrap();
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assert!(understand_recursion.call::<_, ()>(()).is_err());
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match catch_unwind(|| -> Result<()> {
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let lua = Lua::new();
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let globals = lua.globals();
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lua.exec::<()>(
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r#"
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function rust_panic()
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pcall(function () rust_panic_function() end)
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end
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"#,
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None,
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)?;
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let rust_panic_function = lua
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.create_function(|_, ()| -> Result<()> { panic!("test_panic") })
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.unwrap();
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globals.set("rust_panic_function", rust_panic_function)?;
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let rust_panic = globals.get::<_, Function>("rust_panic")?;
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rust_panic.call::<_, ()>(())
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}) {
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Ok(Ok(_)) => panic!("no panic was detected, pcall caught it!"),
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Ok(Err(e)) => panic!("error during panic test {:?}", e),
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Err(p) => assert!(*p.downcast::<&str>().unwrap() == "test_panic"),
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};
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match catch_unwind(|| -> Result<()> {
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let lua = Lua::new();
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let globals = lua.globals();
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lua.exec::<()>(
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r#"
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function rust_panic()
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xpcall(function() rust_panic_function() end, function() end)
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end
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"#,
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None,
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)?;
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let rust_panic_function = lua
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.create_function(|_, ()| -> Result<()> { panic!("test_panic") })
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.unwrap();
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globals.set("rust_panic_function", rust_panic_function)?;
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let rust_panic = globals.get::<_, Function>("rust_panic")?;
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rust_panic.call::<_, ()>(())
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}) {
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Ok(Ok(_)) => panic!("no panic was detected, xpcall caught it!"),
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Ok(Err(e)) => panic!("error during panic test {:?}", e),
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Err(p) => assert!(*p.downcast::<&str>().unwrap() == "test_panic"),
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};
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}
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#[test]
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fn test_result_conversions() {
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let lua = Lua::new();
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let globals = lua.globals();
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let err = lua
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.create_function(|_, ()| {
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Ok(Err::<String, _>(
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err_msg("only through failure can we succeed").to_lua_err(),
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))
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}).unwrap();
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let ok = lua
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.create_function(|_, ()| Ok(Ok::<_, Error>("!".to_owned())))
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.unwrap();
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globals.set("err", err).unwrap();
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globals.set("ok", ok).unwrap();
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lua.exec::<()>(
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r#"
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local r, e = err()
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assert(r == nil)
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assert(tostring(e) == "only through failure can we succeed")
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local r, e = ok()
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assert(r == "!")
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assert(e == nil)
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"#,
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None,
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).unwrap();
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}
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#[test]
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fn test_num_conversion() {
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let lua = Lua::new();
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assert_eq!(
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lua.coerce_integer(Value::String(lua.create_string("1").unwrap())),
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Some(1)
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);
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assert_eq!(
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lua.coerce_integer(Value::String(lua.create_string("1.0").unwrap())),
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Some(1)
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);
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assert_eq!(
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lua.coerce_integer(Value::String(lua.create_string("1.5").unwrap())),
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None
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);
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assert_eq!(
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lua.coerce_number(Value::String(lua.create_string("1").unwrap())),
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Some(1.0)
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);
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assert_eq!(
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lua.coerce_number(Value::String(lua.create_string("1.0").unwrap())),
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Some(1.0)
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);
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assert_eq!(
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lua.coerce_number(Value::String(lua.create_string("1.5").unwrap())),
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Some(1.5)
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);
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assert_eq!(lua.eval::<i64>("1.0", None).unwrap(), 1);
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assert_eq!(lua.eval::<f64>("1.0", None).unwrap(), 1.0);
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assert_eq!(lua.eval::<String>("1.0", None).unwrap(), "1.0");
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assert_eq!(lua.eval::<i64>("1.5", None).unwrap(), 1);
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assert_eq!(lua.eval::<f64>("1.5", None).unwrap(), 1.5);
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assert_eq!(lua.eval::<String>("1.5", None).unwrap(), "1.5");
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assert!(lua.eval::<u64>("-1", None).is_err());
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assert_eq!(lua.eval::<i64>("-1", None).unwrap(), -1);
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assert!(lua.unpack::<u64>(lua.pack(1u128 << 64).unwrap()).is_err());
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assert!(lua.eval::<i64>("math.huge", None).is_err());
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assert_eq!(
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lua.unpack::<f64>(lua.pack(f32::MAX).unwrap()).unwrap(),
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f32::MAX as f64
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);
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assert!(lua.unpack::<f32>(lua.pack(f64::MAX).unwrap()).is_err());
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}
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#[test]
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fn test_pcall_xpcall() {
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let lua = Lua::new();
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let globals = lua.globals();
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// make sure that we handle not enough arguments
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assert!(lua.exec::<()>("pcall()", None).is_err());
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assert!(lua.exec::<()>("xpcall()", None).is_err());
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assert!(lua.exec::<()>("xpcall(function() end)", None).is_err());
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// Make sure that the return values from are correct on success
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let (r, e) = lua
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.eval::<(bool, String)>("pcall(function(p) return p end, 'foo')", None)
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.unwrap();
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assert!(r);
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assert_eq!(e, "foo");
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let (r, e) = lua
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.eval::<(bool, String)>("xpcall(function(p) return p end, print, 'foo')", None)
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.unwrap();
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assert!(r);
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assert_eq!(e, "foo");
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// Make sure that the return values are correct on errors, and that error handling works
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lua.exec::<()>(
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r#"
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pcall_error = nil
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pcall_status, pcall_error = pcall(error, "testerror")
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xpcall_error = nil
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xpcall_status, _ = xpcall(error, function(err) xpcall_error = err end, "testerror")
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"#,
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None,
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).unwrap();
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assert_eq!(globals.get::<_, bool>("pcall_status").unwrap(), false);
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assert_eq!(
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globals.get::<_, String>("pcall_error").unwrap(),
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"testerror"
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);
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assert_eq!(globals.get::<_, bool>("xpcall_statusr").unwrap(), false);
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assert_eq!(
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globals.get::<_, String>("xpcall_error").unwrap(),
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"testerror"
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);
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// Make sure that weird xpcall error recursion at least doesn't cause unsafety or panics.
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lua.exec::<()>(
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r#"
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function xpcall_recursion()
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xpcall(error, function(err) error(err) end, "testerror")
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end
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"#,
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None,
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).unwrap();
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let _ = globals
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.get::<_, Function>("xpcall_recursion")
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.unwrap()
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.call::<_, ()>(());
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}
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|
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#[test]
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fn test_recursive_mut_callback_error() {
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let lua = Lua::new();
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let mut v = Some(Box::new(123));
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let f = lua
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.create_function_mut::<_, (), _>(move |lua, mutate: bool| {
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if mutate {
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v = None;
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} else {
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// Produce a mutable reference
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let r = v.as_mut().unwrap();
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// Whoops, this will recurse into the function and produce another mutable reference!
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lua.globals().get::<_, Function>("f")?.call::<_, ()>(true)?;
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println!("Should not get here, mutable aliasing has occurred!");
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println!("value at {:p}", r as *mut _);
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println!("value is {}", r);
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}
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Ok(())
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})
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.unwrap();
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lua.globals().set("f", f).unwrap();
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match lua
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.globals()
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.get::<_, Function>("f")
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.unwrap()
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.call::<_, ()>(false)
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{
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Err(Error::CallbackError { ref cause, .. }) => match *cause.as_ref() {
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Error::CallbackError { ref cause, .. } => match *cause.as_ref() {
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Error::RecursiveMutCallback { .. } => {}
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ref other => panic!("incorrect result: {:?}", other),
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},
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ref other => panic!("incorrect result: {:?}", other),
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},
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other => panic!("incorrect result: {:?}", other),
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};
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}
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#[test]
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fn test_set_metatable_nil() {
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let lua = Lua::new();
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lua.exec::<()>(
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r#"
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a = {}
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setmetatable(a, nil)
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"#,
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None,
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).unwrap();
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}
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|
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#[test]
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fn test_gc_error() {
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let lua = Lua::new();
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match lua.exec::<()>(
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r#"
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val = nil
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table = {}
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setmetatable(table, {
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__gc = function()
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error("gcwascalled")
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end
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})
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table = nil
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collectgarbage("collect")
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"#,
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None,
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) {
|
|
Err(Error::GarbageCollectorError(_)) => {}
|
|
Err(e) => panic!("__gc error did not result in correct error, instead: {}", e),
|
|
Ok(()) => panic!("__gc error did not result in error"),
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_named_registry_value() {
|
|
let lua = Lua::new();
|
|
|
|
lua.set_named_registry_value::<i32>("test", 42).unwrap();
|
|
let f = lua
|
|
.create_function(move |lua, ()| {
|
|
assert_eq!(lua.named_registry_value::<i32>("test")?, 42);
|
|
Ok(())
|
|
}).unwrap();
|
|
|
|
f.call::<_, ()>(()).unwrap();
|
|
|
|
lua.unset_named_registry_value("test").unwrap();
|
|
match lua.named_registry_value("test").unwrap() {
|
|
Nil => {}
|
|
val => panic!("registry value was not Nil, was {:?}", val),
|
|
};
|
|
}
|
|
|
|
#[test]
|
|
fn test_registry_value() {
|
|
let lua = Lua::new();
|
|
|
|
let mut r = Some(lua.create_registry_value::<i32>(42).unwrap());
|
|
let f = lua
|
|
.create_function_mut(move |lua, ()| {
|
|
if let Some(r) = r.take() {
|
|
assert_eq!(lua.registry_value::<i32>(&r)?, 42);
|
|
lua.remove_registry_value(r).unwrap();
|
|
} else {
|
|
panic!();
|
|
}
|
|
Ok(())
|
|
}).unwrap();
|
|
|
|
f.call::<_, ()>(()).unwrap();
|
|
}
|
|
|
|
#[test]
|
|
fn test_drop_registry_value() {
|
|
struct MyUserdata(Arc<()>);
|
|
|
|
impl UserData for MyUserdata {}
|
|
|
|
let lua = Lua::new();
|
|
|
|
let rc = Arc::new(());
|
|
|
|
let r = lua.create_registry_value(MyUserdata(rc.clone())).unwrap();
|
|
assert_eq!(Arc::strong_count(&rc), 2);
|
|
|
|
drop(r);
|
|
lua.expire_registry_values();
|
|
|
|
lua.exec::<()>(r#"collectgarbage("collect")"#, None)
|
|
.unwrap();
|
|
|
|
assert_eq!(Arc::strong_count(&rc), 1);
|
|
}
|
|
|
|
#[test]
|
|
#[should_panic]
|
|
fn test_mismatched_lua_ref() {
|
|
let lua1 = Lua::new();
|
|
let lua2 = Lua::new();
|
|
|
|
let s = lua1.create_string("hello").unwrap();
|
|
let f = lua2.create_function(|_, _: String| Ok(())).unwrap();
|
|
|
|
f.call::<_, ()>(s).unwrap();
|
|
}
|
|
|
|
#[test]
|
|
fn test_lua_registry_ownership() {
|
|
let lua1 = Lua::new();
|
|
let lua2 = Lua::new();
|
|
|
|
let r1 = lua1.create_registry_value("hello").unwrap();
|
|
let r2 = lua2.create_registry_value("hello").unwrap();
|
|
|
|
assert!(lua1.owns_registry_value(&r1));
|
|
assert!(!lua2.owns_registry_value(&r1));
|
|
assert!(lua2.owns_registry_value(&r2));
|
|
assert!(!lua1.owns_registry_value(&r2));
|
|
}
|
|
|
|
#[test]
|
|
fn test_mismatched_registry_key() {
|
|
let lua1 = Lua::new();
|
|
let lua2 = Lua::new();
|
|
|
|
let r = lua1.create_registry_value("hello").unwrap();
|
|
match lua2.remove_registry_value(r) {
|
|
Err(Error::MismatchedRegistryKey) => {}
|
|
r => panic!("wrong result type for mismatched registry key, {:?}", r),
|
|
};
|
|
}
|
|
|
|
#[test]
|
|
fn too_many_returns() {
|
|
let lua = Lua::new();
|
|
let f = lua
|
|
.create_function(|_, ()| Ok(Variadic::from_iter(1..1000000)))
|
|
.unwrap();
|
|
assert!(f.call::<_, Vec<u32>>(()).is_err());
|
|
}
|
|
|
|
#[test]
|
|
fn too_many_arguments() {
|
|
let lua = Lua::new();
|
|
lua.exec::<()>("function test(...) end", None).unwrap();
|
|
let args = Variadic::from_iter(1..1000000);
|
|
assert!(
|
|
lua.globals()
|
|
.get::<_, Function>("test")
|
|
.unwrap()
|
|
.call::<_, ()>(args)
|
|
.is_err()
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn too_many_recursions() {
|
|
let lua = Lua::new();
|
|
|
|
let f = lua
|
|
.create_function(move |lua, ()| lua.globals().get::<_, Function>("f")?.call::<_, ()>(()))
|
|
.unwrap();
|
|
lua.globals().set("f", f).unwrap();
|
|
|
|
assert!(
|
|
lua.globals()
|
|
.get::<_, Function>("f")
|
|
.unwrap()
|
|
.call::<_, ()>(())
|
|
.is_err()
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn too_many_binds() {
|
|
let lua = Lua::new();
|
|
let globals = lua.globals();
|
|
lua.exec::<()>(
|
|
r#"
|
|
function f(...)
|
|
end
|
|
"#,
|
|
None,
|
|
).unwrap();
|
|
|
|
let concat = globals.get::<_, Function>("f").unwrap();
|
|
assert!(concat.bind(Variadic::from_iter(1..1000000)).is_err());
|
|
assert!(
|
|
concat
|
|
.call::<_, ()>(Variadic::from_iter(1..1000000))
|
|
.is_err()
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn large_args() {
|
|
let lua = Lua::new();
|
|
let globals = lua.globals();
|
|
|
|
globals
|
|
.set(
|
|
"c",
|
|
lua.create_function(|_, args: Variadic<usize>| {
|
|
let mut s = 0;
|
|
for i in 0..args.len() {
|
|
s += i;
|
|
assert_eq!(i, args[i]);
|
|
}
|
|
Ok(s)
|
|
}).unwrap(),
|
|
).unwrap();
|
|
|
|
let f: Function = lua
|
|
.eval(
|
|
r#"
|
|
return function(...)
|
|
return c(...)
|
|
end
|
|
"#,
|
|
None,
|
|
).unwrap();
|
|
|
|
assert_eq!(
|
|
f.call::<_, usize>((0..100).collect::<Variadic<usize>>())
|
|
.unwrap(),
|
|
4950
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn large_args_ref() {
|
|
let lua = Lua::new();
|
|
|
|
let f = lua
|
|
.create_function(|_, args: Variadic<String>| {
|
|
for i in 0..args.len() {
|
|
assert_eq!(args[i], i.to_string());
|
|
}
|
|
Ok(())
|
|
}).unwrap();
|
|
|
|
f.call::<_, ()>((0..100).map(|i| i.to_string()).collect::<Variadic<_>>())
|
|
.unwrap();
|
|
}
|