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Merge branch 'plugins_dev' of https://github.com/schungx/rhai into plugins

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This commit is contained in:
Stephen Chung 2020-09-20 14:32:44 +08:00
commit 1ae6af5289
9 changed files with 269 additions and 142 deletions
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239
codegen/src/function.rs
View File

@ -84,71 +84,91 @@ impl ExportedParams for ExportedFnParams {
let mut skip = false;
let mut special = FnSpecialAccess::None;
for attr in attrs {
let crate::attrs::AttrItem { key, value, span: item_span } = attr;
let crate::attrs::AttrItem {
key,
value,
span: item_span,
} = attr;
match (key.to_string().as_ref(), value) {
("get", None) | ("set", None) | ("name", None) => {
return Err(syn::Error::new(key.span(), "requires value"))
},
}
("name", Some(s)) if &s.value() == FN_IDX_GET => {
return Err(syn::Error::new(item_span,
"use attribute 'index_get' instead"))
},
return Err(syn::Error::new(
item_span,
"use attribute 'index_get' instead",
))
}
("name", Some(s)) if &s.value() == FN_IDX_SET => {
return Err(syn::Error::new(item_span,
"use attribute 'index_set' instead"))
},
return Err(syn::Error::new(
item_span,
"use attribute 'index_set' instead",
))
}
("name", Some(s)) if s.value().starts_with("get$") => {
return Err(syn::Error::new(item_span,
format!("use attribute 'getter = \"{}\"' instead",
&s.value()["get$".len()..])))
},
return Err(syn::Error::new(
item_span,
format!(
"use attribute 'getter = \"{}\"' instead",
&s.value()["get$".len()..]
),
))
}
("name", Some(s)) if s.value().starts_with("set$") => {
return Err(syn::Error::new(item_span,
format!("use attribute 'setter = \"{}\"' instead",
&s.value()["set$".len()..])))
},
return Err(syn::Error::new(
item_span,
format!(
"use attribute 'setter = \"{}\"' instead",
&s.value()["set$".len()..]
),
))
}
("name", Some(s)) if s.value().contains('$') => {
return Err(syn::Error::new(s.span(),
"Rhai function names may not contain dollar sign"))
},
return Err(syn::Error::new(
s.span(),
"Rhai function names may not contain dollar sign",
))
}
("name", Some(s)) if s.value().contains('.') => {
return Err(syn::Error::new(s.span(),
"Rhai function names may not contain dot"))
},
("name", Some(s)) => {
name.push(s.value())
},
("set", Some(s)) => special = match special {
FnSpecialAccess::None =>
FnSpecialAccess::Property(Property::Set(syn::Ident::new(&s.value(),
s.span()))),
_ => {
return Err(syn::Error::new(item_span.span(), "conflicting setter"))
return Err(syn::Error::new(
s.span(),
"Rhai function names may not contain dot",
))
}
("name", Some(s)) => name.push(s.value()),
("set", Some(s)) => {
special = match special {
FnSpecialAccess::None => FnSpecialAccess::Property(Property::Set(
syn::Ident::new(&s.value(), s.span()),
)),
_ => return Err(syn::Error::new(item_span.span(), "conflicting setter")),
}
},
("get", Some(s)) => special = match special {
FnSpecialAccess::None =>
FnSpecialAccess::Property(Property::Get(syn::Ident::new(&s.value(),
s.span()))),
_ => {
return Err(syn::Error::new(item_span.span(), "conflicting getter"))
}
("get", Some(s)) => {
special = match special {
FnSpecialAccess::None => FnSpecialAccess::Property(Property::Get(
syn::Ident::new(&s.value(), s.span()),
)),
_ => return Err(syn::Error::new(item_span.span(), "conflicting getter")),
}
},
("index_get", None) => special = match special {
FnSpecialAccess::None =>
FnSpecialAccess::Index(Index::Get),
_ => {
return Err(syn::Error::new(item_span.span(), "conflicting index_get"))
}
("index_get", None) => {
special = match special {
FnSpecialAccess::None => FnSpecialAccess::Index(Index::Get),
_ => {
return Err(syn::Error::new(item_span.span(), "conflicting index_get"))
}
}
},
}
("index_set", None) => special = match special {
FnSpecialAccess::None =>
FnSpecialAccess::Index(Index::Set),
_ => {
return Err(syn::Error::new(item_span.span(), "conflicting index_set"))
("index_set", None) => {
special = match special {
FnSpecialAccess::None => FnSpecialAccess::Index(Index::Set),
_ => {
return Err(syn::Error::new(item_span.span(), "conflicting index_set"))
}
}
},
}
("return_raw", None) => return_raw = true,
("index_get", Some(s)) | ("index_set", Some(s)) | ("return_raw", Some(s)) => {
return Err(syn::Error::new(s.span(), "extraneous value"))
@ -327,26 +347,40 @@ impl ExportedFn {
}
pub(crate) fn exported_names(&self) -> Vec<syn::LitStr> {
let mut literals = self.params.name.as_ref()
.map(|v| v.iter()
.map(|s| syn::LitStr::new(s, proc_macro2::Span::call_site())).collect())
let mut literals = self
.params
.name
.as_ref()
.map(|v| {
v.iter()
.map(|s| syn::LitStr::new(s, proc_macro2::Span::call_site()))
.collect()
})
.unwrap_or_else(|| Vec::new());
match self.params.special {
FnSpecialAccess::None => {},
FnSpecialAccess::Property(Property::Get(ref g)) =>
literals.push(syn::LitStr::new(&format!("get${}", g.to_string()), g.span())),
FnSpecialAccess::Property(Property::Set(ref s)) =>
literals.push(syn::LitStr::new(&format!("set${}", s.to_string()), s.span())),
FnSpecialAccess::Index(Index::Get) =>
literals.push(syn::LitStr::new(FN_IDX_GET, proc_macro2::Span::call_site())),
FnSpecialAccess::Index(Index::Set) =>
literals.push(syn::LitStr::new(FN_IDX_SET, proc_macro2::Span::call_site())),
FnSpecialAccess::None => {}
FnSpecialAccess::Property(Property::Get(ref g)) => literals.push(syn::LitStr::new(
&format!("get${}", g.to_string()),
g.span(),
)),
FnSpecialAccess::Property(Property::Set(ref s)) => literals.push(syn::LitStr::new(
&format!("set${}", s.to_string()),
s.span(),
)),
FnSpecialAccess::Index(Index::Get) => {
literals.push(syn::LitStr::new(FN_IDX_GET, proc_macro2::Span::call_site()))
}
FnSpecialAccess::Index(Index::Set) => {
literals.push(syn::LitStr::new(FN_IDX_SET, proc_macro2::Span::call_site()))
}
}
if literals.is_empty() {
literals.push(syn::LitStr::new(&self.signature.ident.to_string(),
self.signature.ident.span()));
literals.push(syn::LitStr::new(
&self.signature.ident.to_string(),
self.signature.ident.span(),
));
}
literals
@ -394,53 +428,61 @@ impl ExportedFn {
match params.special {
// 2a. Property getters must take only the subject as an argument.
FnSpecialAccess::Property(Property::Get(_)) if self.arg_count() != 1 =>
FnSpecialAccess::Property(Property::Get(_)) if self.arg_count() != 1 => {
return Err(syn::Error::new(
self.signature.span(),
"property getter requires exactly 1 argument",
)),
))
}
// 2b. Property getters must return a value.
FnSpecialAccess::Property(Property::Get(_)) if self.return_type().is_none() =>
FnSpecialAccess::Property(Property::Get(_)) if self.return_type().is_none() => {
return Err(syn::Error::new(
self.signature.span(),
"property getter must return a value"
)),
"property getter must return a value",
))
}
// 3a. Property setters must take the subject and a new value as arguments.
FnSpecialAccess::Property(Property::Set(_)) if self.arg_count() != 2 =>
FnSpecialAccess::Property(Property::Set(_)) if self.arg_count() != 2 => {
return Err(syn::Error::new(
self.signature.span(),
"property setter requires exactly 2 arguments",
)),
))
}
// 3b. Property setters must return nothing.
FnSpecialAccess::Property(Property::Set(_)) if self.return_type().is_some() =>
FnSpecialAccess::Property(Property::Set(_)) if self.return_type().is_some() => {
return Err(syn::Error::new(
self.signature.span(),
"property setter must return no value"
)),
"property setter must return no value",
))
}
// 4a. Index getters must take the subject and the accessed "index" as arguments.
FnSpecialAccess::Index(Index::Get) if self.arg_count() != 2 =>
FnSpecialAccess::Index(Index::Get) if self.arg_count() != 2 => {
return Err(syn::Error::new(
self.signature.span(),
"index getter requires exactly 2 arguments",
)),
))
}
// 4b. Index getters must return a value.
FnSpecialAccess::Index(Index::Get) if self.return_type().is_none() =>
FnSpecialAccess::Index(Index::Get) if self.return_type().is_none() => {
return Err(syn::Error::new(
self.signature.span(),
"index getter must return a value"
)),
"index getter must return a value",
))
}
// 5a. Index setters must take the subject, "index", and new value as arguments.
FnSpecialAccess::Index(Index::Set) if self.arg_count() != 3 =>
FnSpecialAccess::Index(Index::Set) if self.arg_count() != 3 => {
return Err(syn::Error::new(
self.signature.span(),
"index setter requires exactly 3 arguments",
)),
))
}
// 5b. Index setters must return nothing.
FnSpecialAccess::Index(Index::Set) if self.return_type().is_some() =>
FnSpecialAccess::Index(Index::Set) if self.return_type().is_some() => {
return Err(syn::Error::new(
self.signature.span(),
"index setter must return no value"
)),
"index setter must return no value",
))
}
_ => {}
}
@ -596,11 +638,13 @@ impl ExportedFn {
// Handle the rest of the arguments, which all are passed by value.
//
// The only exception is strings, which need to be downcast to ImmutableString to enable a
// zero-copy conversion to &str by reference.
// zero-copy conversion to &str by reference, or a cloned String.
let str_type_path = syn::parse2::<syn::Path>(quote! { str }).unwrap();
let string_type_path = syn::parse2::<syn::Path>(quote! { String }).unwrap();
for (i, arg) in self.arg_list().enumerate().skip(skip_first_arg as usize) {
let var = syn::Ident::new(&format!("arg{}", i), proc_macro2::Span::call_site());
let is_str_ref;
let is_string;
let is_ref;
match arg {
syn::FnArg::Typed(pattern) => {
let arg_type: &syn::Type = pattern.ty.as_ref();
@ -611,15 +655,22 @@ impl ExportedFn {
..
}) => match elem.as_ref() {
&syn::Type::Path(ref p) if p.path == str_type_path => {
is_str_ref = true;
is_string = true;
is_ref = true;
quote_spanned!(arg_type.span()=>
mem::take(args[#i])
.clone().cast::<ImmutableString>())
mem::take(args[#i]).take_immutable_string().unwrap())
}
_ => panic!("internal error: why wasn't this found earlier!?"),
},
&syn::Type::Path(ref p) if p.path == string_type_path => {
is_string = true;
is_ref = false;
quote_spanned!(arg_type.span()=>
mem::take(args[#i]).take_string().unwrap())
}
_ => {
is_str_ref = false;
is_string = false;
is_ref = false;
quote_spanned!(arg_type.span()=>
mem::take(args[#i]).clone().cast::<#arg_type>())
}
@ -631,7 +682,7 @@ impl ExportedFn {
})
.unwrap(),
);
if !is_str_ref {
if !is_string {
input_type_exprs.push(
syn::parse2::<syn::Expr>(quote_spanned!(
arg_type.span()=> TypeId::of::<#arg_type>()
@ -649,7 +700,7 @@ impl ExportedFn {
}
syn::FnArg::Receiver(_) => panic!("internal error: how did this happen!?"),
}
if !is_str_ref {
if !is_ref {
unpack_exprs.push(syn::parse2::<syn::Expr>(quote! { #var }).unwrap());
} else {
unpack_exprs.push(syn::parse2::<syn::Expr>(quote! { &#var }).unwrap());
@ -685,7 +736,7 @@ impl ExportedFn {
quote! {
impl PluginFunction for #type_name {
fn call(&self,
args: &mut [&mut Dynamic], pos: Position
args: &mut [&mut Dynamic]
) -> Result<Dynamic, Box<EvalAltResult>> {
debug_assert_eq!(args.len(), #arg_count,
"wrong arg count: {} != {}",

6
codegen/src/rhai_module.rs
View File

@ -19,6 +19,7 @@ pub(crate) fn generate_body(
let mut add_mod_blocks: Vec<syn::ExprBlock> = Vec::new();
let mut set_flattened_mod_blocks: Vec<syn::ExprBlock> = Vec::new();
let str_type_path = syn::parse2::<syn::Path>(quote! { str }).unwrap();
let string_type_path = syn::parse2::<syn::Path>(quote! { String }).unwrap();
for (const_name, _, _) in consts {
let const_literal = syn::LitStr::new(&const_name, proc_macro2::Span::call_site());
@ -97,6 +98,11 @@ pub(crate) fn generate_body(
}
_ => panic!("internal error: non-string shared reference!?"),
},
syn::Type::Path(ref p) if p.path == string_type_path => {
syn::parse2::<syn::Type>(quote! {
ImmutableString })
.unwrap()
}
syn::Type::Reference(syn::TypeReference {
mutability: Some(_),
ref elem,

26
codegen/src/test/function.rs
View File

@ -245,9 +245,7 @@ mod generate_tests {
false
}
});
eprintln!("actual != expected, diverge at char {}", counter);
/*
let (actual_diff, expected_diff) = {
let (_actual_diff, _expected_diff) = {
let mut actual_diff = String::new();
let mut expected_diff = String::new();
for (a, e) in _iter.take(50) {
@ -256,10 +254,10 @@ mod generate_tests {
}
(actual_diff, expected_diff)
};
eprintln!(" actual: {}", actual_diff);
eprintln!("expected: {}", expected_diff);
assert!(false);
*/
eprintln!("actual != expected, diverge at char {}", counter);
// eprintln!(" actual: {}", _actual_diff);
// eprintln!("expected: {}", _expected_diff);
// assert!(false);
}
assert_eq!(actual, expected);
}
@ -277,7 +275,7 @@ mod generate_tests {
struct Token();
impl PluginFunction for Token {
fn call(&self,
args: &mut [&mut Dynamic], pos: Position
args: &mut [&mut Dynamic]
) -> Result<Dynamic, Box<EvalAltResult>> {
debug_assert_eq!(args.len(), 0usize,
"wrong arg count: {} != {}", args.len(), 0usize);
@ -321,7 +319,7 @@ mod generate_tests {
struct Token();
impl PluginFunction for Token {
fn call(&self,
args: &mut [&mut Dynamic], pos: Position
args: &mut [&mut Dynamic]
) -> Result<Dynamic, Box<EvalAltResult>> {
debug_assert_eq!(args.len(), 1usize,
"wrong arg count: {} != {}", args.len(), 1usize);
@ -362,7 +360,7 @@ mod generate_tests {
let expected_tokens = quote! {
impl PluginFunction for MyType {
fn call(&self,
args: &mut [&mut Dynamic], pos: Position
args: &mut [&mut Dynamic]
) -> Result<Dynamic, Box<EvalAltResult>> {
debug_assert_eq!(args.len(), 1usize,
"wrong arg count: {} != {}", args.len(), 1usize);
@ -396,7 +394,7 @@ mod generate_tests {
struct Token();
impl PluginFunction for Token {
fn call(&self,
args: &mut [&mut Dynamic], pos: Position
args: &mut [&mut Dynamic]
) -> Result<Dynamic, Box<EvalAltResult>> {
debug_assert_eq!(args.len(), 2usize,
"wrong arg count: {} != {}", args.len(), 2usize);
@ -443,7 +441,7 @@ mod generate_tests {
struct Token();
impl PluginFunction for Token {
fn call(&self,
args: &mut [&mut Dynamic], pos: Position
args: &mut [&mut Dynamic]
) -> Result<Dynamic, Box<EvalAltResult>> {
debug_assert_eq!(args.len(), 2usize,
"wrong arg count: {} != {}", args.len(), 2usize);
@ -491,11 +489,11 @@ mod generate_tests {
struct Token();
impl PluginFunction for Token {
fn call(&self,
args: &mut [&mut Dynamic], pos: Position
args: &mut [&mut Dynamic]
) -> Result<Dynamic, Box<EvalAltResult>> {
debug_assert_eq!(args.len(), 1usize,
"wrong arg count: {} != {}", args.len(), 1usize);
let arg0 = mem::take(args[0usize]).clone().cast::<ImmutableString>();
let arg0 = mem::take(args[0usize]).take_immutable_string().unwrap();
Ok(Dynamic::from(special_print(&arg0)))
}

116
codegen/src/test/module.rs
View File

@ -226,9 +226,7 @@ mod generate_tests {
false
}
});
eprintln!("actual != expected, diverge at char {}", counter);
/*
let (actual_diff, expected_diff) = {
let (_actual_diff, _expected_diff) = {
let mut actual_diff = String::new();
let mut expected_diff = String::new();
for (a, e) in _iter.take(50) {
@ -237,10 +235,10 @@ mod generate_tests {
}
(actual_diff, expected_diff)
};
eprintln!(" actual: {}", actual_diff);
eprintln!("expected: {}", expected_diff);
assert!(false);
*/
eprintln!("actual != expected, diverge at char {}", counter);
// eprintln!(" actual: {}", _actual_diff);
// eprintln!("expected: {}", _expected_diff);
// assert!(false);
}
assert_eq!(actual, expected);
}
@ -305,7 +303,7 @@ mod generate_tests {
struct get_mystic_number_token();
impl PluginFunction for get_mystic_number_token {
fn call(&self,
args: &mut [&mut Dynamic], pos: Position
args: &mut [&mut Dynamic]
) -> Result<Dynamic, Box<EvalAltResult>> {
debug_assert_eq!(args.len(), 0usize,
"wrong arg count: {} != {}", args.len(), 0usize);
@ -367,7 +365,7 @@ mod generate_tests {
struct add_one_to_token();
impl PluginFunction for add_one_to_token {
fn call(&self,
args: &mut [&mut Dynamic], pos: Position
args: &mut [&mut Dynamic]
) -> Result<Dynamic, Box<EvalAltResult>> {
debug_assert_eq!(args.len(), 1usize,
"wrong arg count: {} != {}", args.len(), 1usize);
@ -444,7 +442,7 @@ mod generate_tests {
struct add_one_to_token();
impl PluginFunction for add_one_to_token {
fn call(&self,
args: &mut [&mut Dynamic], pos: Position
args: &mut [&mut Dynamic]
) -> Result<Dynamic, Box<EvalAltResult>> {
debug_assert_eq!(args.len(), 1usize,
"wrong arg count: {} != {}", args.len(), 1usize);
@ -472,7 +470,7 @@ mod generate_tests {
struct add_n_to_token();
impl PluginFunction for add_n_to_token {
fn call(&self,
args: &mut [&mut Dynamic], pos: Position
args: &mut [&mut Dynamic]
) -> Result<Dynamic, Box<EvalAltResult>> {
debug_assert_eq!(args.len(), 2usize,
"wrong arg count: {} != {}", args.len(), 2usize);
@ -538,7 +536,7 @@ mod generate_tests {
struct add_together_token();
impl PluginFunction for add_together_token {
fn call(&self,
args: &mut [&mut Dynamic], pos: Position
args: &mut [&mut Dynamic]
) -> Result<Dynamic, Box<EvalAltResult>> {
debug_assert_eq!(args.len(), 2usize,
"wrong arg count: {} != {}", args.len(), 2usize);
@ -611,7 +609,7 @@ mod generate_tests {
struct add_together_token();
impl PluginFunction for add_together_token {
fn call(&self,
args: &mut [&mut Dynamic], pos: Position
args: &mut [&mut Dynamic]
) -> Result<Dynamic, Box<EvalAltResult>> {
debug_assert_eq!(args.len(), 2usize,
"wrong arg count: {} != {}", args.len(), 2usize);
@ -853,7 +851,7 @@ mod generate_tests {
struct get_mystic_number_token();
impl PluginFunction for get_mystic_number_token {
fn call(&self,
args: &mut [&mut Dynamic], pos: Position
args: &mut [&mut Dynamic]
) -> Result<Dynamic, Box<EvalAltResult>> {
debug_assert_eq!(args.len(), 0usize,
"wrong arg count: {} != {}", args.len(), 0usize);
@ -946,11 +944,11 @@ mod generate_tests {
struct print_out_to_token();
impl PluginFunction for print_out_to_token {
fn call(&self,
args: &mut [&mut Dynamic], pos: Position
args: &mut [&mut Dynamic]
) -> Result<Dynamic, Box<EvalAltResult>> {
debug_assert_eq!(args.len(), 1usize,
"wrong arg count: {} != {}", args.len(), 1usize);
let arg0 = mem::take(args[0usize]).clone().cast::<ImmutableString>();
let arg0 = mem::take(args[0usize]).take_immutable_string().unwrap();
Ok(Dynamic::from(print_out_to(&arg0)))
}
@ -976,6 +974,70 @@ mod generate_tests {
assert_streams_eq(item_mod.generate(), expected_tokens);
}
#[test]
fn one_string_arg_fn_module() {
let input_tokens: TokenStream = quote! {
pub mod str_fn {
pub fn print_out_to(x: String) {
x + 1
}
}
};
let expected_tokens = quote! {
pub mod str_fn {
pub fn print_out_to(x: String) {
x + 1
}
#[allow(unused_imports)]
use super::*;
pub fn rhai_module_generate() -> Module {
let mut m = Module::new();
rhai_generate_into_module(&mut m, false);
m
}
#[allow(unused_mut)]
pub fn rhai_generate_into_module(m: &mut Module, flatten: bool) {
m.set_fn("print_out_to", FnAccess::Public,
&[core::any::TypeId::of::<ImmutableString>()],
CallableFunction::from_plugin(print_out_to_token()));
if flatten {} else {}
}
#[allow(non_camel_case_types)]
struct print_out_to_token();
impl PluginFunction for print_out_to_token {
fn call(&self,
args: &mut [&mut Dynamic]
) -> Result<Dynamic, Box<EvalAltResult>> {
debug_assert_eq!(args.len(), 1usize,
"wrong arg count: {} != {}", args.len(), 1usize);
let arg0 = mem::take(args[0usize]).take_string().unwrap();
Ok(Dynamic::from(print_out_to(arg0)))
}
fn is_method_call(&self) -> bool { false }
fn is_varadic(&self) -> bool { false }
fn clone_boxed(&self) -> Box<dyn PluginFunction> {
Box::new(print_out_to_token())
}
fn input_types(&self) -> Box<[TypeId]> {
new_vec![TypeId::of::<ImmutableString>()].into_boxed_slice()
}
}
pub fn print_out_to_token_callable() -> CallableFunction {
CallableFunction::from_plugin(print_out_to_token())
}
pub fn print_out_to_token_input_types() -> Box<[TypeId]> {
print_out_to_token().input_types()
}
}
};
let item_mod = syn::parse2::<Module>(input_tokens).unwrap();
assert_streams_eq(item_mod.generate(), expected_tokens);
}
#[test]
fn one_mut_ref_fn_module() {
let input_tokens: TokenStream = quote! {
@ -1010,7 +1072,7 @@ mod generate_tests {
struct increment_token();
impl PluginFunction for increment_token {
fn call(&self,
args: &mut [&mut Dynamic], pos: Position
args: &mut [&mut Dynamic]
) -> Result<Dynamic, Box<EvalAltResult>> {
debug_assert_eq!(args.len(), 1usize,
"wrong arg count: {} != {}", args.len(), 1usize);
@ -1077,7 +1139,7 @@ mod generate_tests {
struct increment_token();
impl PluginFunction for increment_token {
fn call(&self,
args: &mut [&mut Dynamic], pos: Position
args: &mut [&mut Dynamic]
) -> Result<Dynamic, Box<EvalAltResult>> {
debug_assert_eq!(args.len(), 1usize,
"wrong arg count: {} != {}", args.len(), 1usize);
@ -1164,7 +1226,7 @@ mod generate_tests {
struct increment_token();
impl PluginFunction for increment_token {
fn call(&self,
args: &mut [&mut Dynamic], pos: Position
args: &mut [&mut Dynamic]
) -> Result<Dynamic, Box<EvalAltResult>> {
debug_assert_eq!(args.len(), 1usize,
"wrong arg count: {} != {}", args.len(), 1usize);
@ -1249,7 +1311,7 @@ mod generate_tests {
struct int_foo_token();
impl PluginFunction for int_foo_token {
fn call(&self,
args: &mut [&mut Dynamic], pos: Position
args: &mut [&mut Dynamic]
) -> Result<Dynamic, Box<EvalAltResult>> {
debug_assert_eq!(args.len(), 1usize,
"wrong arg count: {} != {}", args.len(), 1usize);
@ -1315,7 +1377,7 @@ mod generate_tests {
struct int_foo_token();
impl PluginFunction for int_foo_token {
fn call(&self,
args: &mut [&mut Dynamic], pos: Position
args: &mut [&mut Dynamic]
) -> Result<Dynamic, Box<EvalAltResult>> {
debug_assert_eq!(args.len(), 1usize,
"wrong arg count: {} != {}", args.len(), 1usize);
@ -1381,7 +1443,7 @@ mod generate_tests {
struct int_foo_token();
impl PluginFunction for int_foo_token {
fn call(&self,
args: &mut [&mut Dynamic], pos: Position
args: &mut [&mut Dynamic]
) -> Result<Dynamic, Box<EvalAltResult>> {
debug_assert_eq!(args.len(), 2usize,
"wrong arg count: {} != {}", args.len(), 2usize);
@ -1452,7 +1514,7 @@ mod generate_tests {
struct int_foo_token();
impl PluginFunction for int_foo_token {
fn call(&self,
args: &mut [&mut Dynamic], pos: Position
args: &mut [&mut Dynamic]
) -> Result<Dynamic, Box<EvalAltResult>> {
debug_assert_eq!(args.len(), 2usize,
"wrong arg count: {} != {}", args.len(), 2usize);
@ -1519,7 +1581,7 @@ mod generate_tests {
struct get_by_index_token();
impl PluginFunction for get_by_index_token {
fn call(&self,
args: &mut [&mut Dynamic], pos: Position
args: &mut [&mut Dynamic]
) -> Result<Dynamic, Box<EvalAltResult>> {
debug_assert_eq!(args.len(), 2usize,
"wrong arg count: {} != {}", args.len(), 2usize);
@ -1591,7 +1653,7 @@ mod generate_tests {
struct get_by_index_token();
impl PluginFunction for get_by_index_token {
fn call(&self,
args: &mut [&mut Dynamic], pos: Position
args: &mut [&mut Dynamic]
) -> Result<Dynamic, Box<EvalAltResult>> {
debug_assert_eq!(args.len(), 2usize,
"wrong arg count: {} != {}", args.len(), 2usize);
@ -1660,7 +1722,7 @@ mod generate_tests {
struct set_by_index_token();
impl PluginFunction for set_by_index_token {
fn call(&self,
args: &mut [&mut Dynamic], pos: Position
args: &mut [&mut Dynamic]
) -> Result<Dynamic, Box<EvalAltResult>> {
debug_assert_eq!(args.len(), 3usize,
"wrong arg count: {} != {}", args.len(), 3usize);
@ -1736,7 +1798,7 @@ mod generate_tests {
struct set_by_index_token();
impl PluginFunction for set_by_index_token {
fn call(&self,
args: &mut [&mut Dynamic], pos: Position
args: &mut [&mut Dynamic]
) -> Result<Dynamic, Box<EvalAltResult>> {
debug_assert_eq!(args.len(), 3usize,
"wrong arg count: {} != {}", args.len(), 3usize);

4
src/any.rs
View File

@ -1136,6 +1136,7 @@ impl Dynamic {
}
/// Convert the `Dynamic` into `String` and return it.
/// If there are other references to the same string, a cloned copy is returned.
/// Returns the name of the actual type if the cast fails.
#[inline(always)]
pub fn take_string(self) -> Result<String, &'static str> {
@ -1145,7 +1146,8 @@ impl Dynamic {
/// Convert the `Dynamic` into `ImmutableString` and return it.
/// Returns the name of the actual type if the cast fails.
pub(crate) fn take_immutable_string(self) -> Result<ImmutableString, &'static str> {
#[inline]
pub fn take_immutable_string(self) -> Result<ImmutableString, &'static str> {
match self.0 {
Union::Str(s) => Ok(s),
Union::FnPtr(f) => Ok(f.take_data().0),

4
src/fn_call.rs
View File

@ -232,7 +232,7 @@ impl Engine {
// Run external function
let result = if func.is_plugin_fn() {
func.get_plugin_fn().call(args, Position::none())
func.get_plugin_fn().call(args)
} else {
func.get_native_fn()(self, lib, args)
};
@ -1099,7 +1099,7 @@ impl Engine {
self.call_script_fn(scope, mods, state, lib, &mut None, name, func, args, level)
}
Some(f) if f.is_plugin_fn() => f.get_plugin_fn().call(args.as_mut(), Position::none()),
Some(f) if f.is_plugin_fn() => f.get_plugin_fn().call(args.as_mut()),
Some(f) if f.is_native() => {
if !f.is_method() {
// Clone first argument

2
src/fn_register.rs
View File

@ -46,7 +46,7 @@ pub trait RegisterPlugin<PL: crate::plugin::Plugin> {
/// fn is_method_call(&self) -> bool { false }
/// fn is_varadic(&self) -> bool { false }
///
/// fn call(&self, args: &mut[&mut Dynamic], pos: Position) -> Result<Dynamic, Box<EvalAltResult>> {
/// fn call(&self, args: &mut[&mut Dynamic]) -> Result<Dynamic, Box<EvalAltResult>> {
/// let x1: NUMBER = std::mem::take(args[0]).clone().cast::<NUMBER>();
/// let y1: NUMBER = std::mem::take(args[1]).clone().cast::<NUMBER>();
/// let x2: NUMBER = std::mem::take(args[2]).clone().cast::<NUMBER>();

5
src/plugin.rs
View File

@ -3,7 +3,7 @@
pub use crate::{
fn_native::CallableFunction, stdlib::any::TypeId, stdlib::boxed::Box, stdlib::format,
stdlib::mem, stdlib::string::ToString, stdlib::vec as new_vec, stdlib::vec::Vec, Dynamic,
Engine, EvalAltResult, FnAccess, ImmutableString, Module, Position, RegisterResultFn,
Engine, EvalAltResult, FnAccess, ImmutableString, Module, RegisterResultFn,
};
#[cfg(not(features = "no_module"))]
@ -34,8 +34,7 @@ pub trait PluginFunction {
fn is_method_call(&self) -> bool;
fn is_varadic(&self) -> bool;
fn call(&self, args: &mut [&mut Dynamic], pos: Position)
-> Result<Dynamic, Box<EvalAltResult>>;
fn call(&self, args: &mut [&mut Dynamic]) -> Result<Dynamic, Box<EvalAltResult>>;
fn clone_boxed(&self) -> Box<dyn PluginFunction>;

9
tests/plugins.rs
View File

@ -24,6 +24,13 @@ mod test {
}
}
pub fn hash(_text: String) -> INT {
42
}
pub fn hash2(_text: &str) -> INT {
42
}
#[rhai_fn(name = "test", name = "hi")]
#[inline(always)]
pub fn len(array: &mut Array, mul: INT) -> INT {
@ -77,6 +84,8 @@ fn test_plugins_package() -> Result<(), Box<EvalAltResult>> {
#[cfg(not(feature = "no_object"))]
assert_eq!(engine.eval::<INT>("let a = [1, 2, 3]; a.foo")?, 1);
assert_eq!(engine.eval::<INT>(r#"hash("hello")"#)?, 42);
assert_eq!(engine.eval::<INT>(r#"hash2("hello")"#)?, 42);
assert_eq!(engine.eval::<INT>("let a = [1, 2, 3]; test(a, 2)")?, 6);
assert_eq!(engine.eval::<INT>("let a = [1, 2, 3]; hi(a, 2)")?, 6);
assert_eq!(engine.eval::<INT>("let a = [1, 2, 3]; test(a, 2)")?, 6);