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webidl: refactor method/getter/getter generation

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This commit is contained in:
R. Andrew Ohana
2018-06-14 02:03:52 -07:00
parent 0cd767c9d4
commit 400015a061
5 changed files with 422 additions and 477 deletions
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85
crates/backend/src/codegen.rs
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@ -1,10 +1,10 @@
use std::borrow::Cow;
use std::collections::HashSet;
use std::env;
use std::sync::atomic::{ATOMIC_USIZE_INIT, AtomicUsize, Ordering};
use std::sync::atomic::{AtomicUsize, Ordering, ATOMIC_USIZE_INIT};
use ast;
use proc_macro2::{Span, Ident, TokenStream};
use proc_macro2::{Ident, Span, TokenStream};
use quote::ToTokens;
use serde_json;
use shared;
@ -50,7 +50,7 @@ impl ToTokens for ast::Program {
if types.contains(ns) && i.kind.fits_on_impl() {
let kind = &i.kind;
(quote! { impl #ns { #kind } }).to_tokens(tokens);
continue
continue;
}
}
@ -240,7 +240,10 @@ impl ToTokens for ast::StructField {
let ty = &self.ty;
let getter = &self.getter;
let setter = &self.setter;
let desc = Ident::new(&format!("__wbindgen_describe_{}", getter), Span::call_site());
let desc = Ident::new(
&format!("__wbindgen_describe_{}", getter),
Span::call_site(),
);
(quote! {
#[no_mangle]
#[cfg(all(target_arch = "wasm32", not(target_os = "emscripten")))]
@ -270,7 +273,7 @@ impl ToTokens for ast::StructField {
}).to_tokens(tokens);
if self.opts.readonly() {
return
return;
}
(quote! {
@ -315,7 +318,7 @@ impl ToTokens for ast::Export {
offset = 1;
}
for (i, ty) in self.function.arguments.iter().enumerate() {
for (i, syn::ArgCaptured { ty, .. }) in self.function.arguments.iter().enumerate() {
let i = i + offset;
let ident = Ident::new(&format!("arg{}", i), Span::call_site());
match *ty {
@ -377,8 +380,8 @@ impl ToTokens for ast::Export {
};
}
None => {
ret_ty = quote!{};
convert_ret = quote!{};
ret_ty = quote!();
convert_ret = quote!();
}
}
let describe_ret = match &self.function.ret {
@ -406,7 +409,7 @@ impl ToTokens for ast::Export {
let descriptor_name = format!("__wbindgen_describe_{}", export_name);
let descriptor_name = Ident::new(&descriptor_name, Span::call_site());
let nargs = self.function.arguments.len() as u32;
let argtys = self.function.arguments.iter();
let argtys = self.function.arguments.iter().map(|arg| &arg.ty);
let tokens = quote! {
#[export_name = #export_name]
@ -559,37 +562,27 @@ impl ToTokens for ast::ImportFunction {
ast::ImportFunctionKind::Normal => {}
}
let vis = &self.function.rust_vis;
let ret = &self.function.rust_decl.output;
let fn_token = &self.function.rust_decl.fn_token;
let ret = match &self.function.ret {
Some(ty) => quote! { -> #ty },
None => quote!(),
};
let mut abi_argument_names = Vec::new();
let mut abi_arguments = Vec::new();
let mut arg_conversions = Vec::new();
let ret_ident = Ident::new("_ret", Span::call_site());
let names = self.function
.rust_decl
.inputs
.iter()
.map(|arg| {
match arg {
syn::FnArg::Captured(c) => c,
_ => panic!("arguments cannot be `self` or ignored"),
}
})
.map(|arg| {
match &arg.pat {
syn::Pat::Ident(syn::PatIdent {
by_ref: None,
ident,
subpat: None,
..
}) => ident.clone(),
_ => panic!("unsupported pattern in foreign function"),
}
});
for (i, syn::ArgCaptured { pat, ty, .. }) in self.function.arguments.iter().enumerate() {
let name = match pat {
syn::Pat::Ident(syn::PatIdent {
by_ref: None,
ident,
subpat: None,
..
}) => ident.clone(),
_ => panic!("unsupoported pattern in foreign function"),
};
for (i, (ty, name)) in self.function.arguments.iter().zip(names).enumerate() {
abi_argument_names.push(name.clone());
abi_arguments.push(quote! {
#name: <#ty as ::wasm_bindgen::convert::IntoWasmAbi>::Abi
@ -606,7 +599,7 @@ impl ToTokens for ast::ImportFunction {
}
let abi_ret;
let mut convert_ret;
match self.function.ret {
match &self.js_ret {
Some(syn::Type::Reference(_)) => {
panic!("cannot return references in imports yet");
}
@ -628,7 +621,7 @@ impl ToTokens for ast::ImportFunction {
}
}
let mut exceptional_ret = quote!{};
let mut exceptional_ret = quote!();
let exn_data = if self.function.opts.catch() {
let exn_data = Ident::new("exn_data", Span::call_site());
let exn_data_ptr = Ident::new("exn_data_ptr", Span::call_site());
@ -649,20 +642,18 @@ impl ToTokens for ast::ImportFunction {
let #exn_data_ptr = #exn_data.as_mut_ptr();
}
} else {
quote! {}
quote!()
};
let rust_name = &self.rust_name;
let import_name = &self.shim;
let attrs = &self.function.rust_attrs;
let arguments = self.function
.rust_decl
.inputs
.iter()
.skip(if is_method { 1 } else { 0 })
.collect::<Vec<_>>();
let arguments = &arguments[..];
let arguments = if is_method {
&self.function.arguments[1..]
} else {
&self.function.arguments[..]
};
let me = if is_method {
quote! { &self, }
@ -674,7 +665,7 @@ impl ToTokens for ast::ImportFunction {
#(#attrs)*
#[allow(bad_style)]
#[cfg(all(target_arch = "wasm32", not(target_os = "emscripten")))]
#vis extern #fn_token #rust_name(#me #(#arguments),*) #ret {
#vis extern fn #rust_name(#me #(#arguments),*) #ret {
::wasm_bindgen::__rt::link_this_library();
#[wasm_import_module = "__wbindgen_placeholder__"]
extern {
@ -695,7 +686,7 @@ impl ToTokens for ast::ImportFunction {
#(#attrs)*
#[allow(bad_style, unused_variables)]
#[cfg(not(all(target_arch = "wasm32", not(target_os = "emscripten"))))]
#vis extern #fn_token #rust_name(#me #(#arguments),*) #ret {
#vis extern fn #rust_name(#me #(#arguments),*) #ret {
panic!("cannot call wasm-bindgen imported functions on \
non-wasm targets");
}
@ -726,9 +717,9 @@ impl<'a> ToTokens for DescribeImport<'a> {
};
let describe_name = format!("__wbindgen_describe_{}", f.shim);
let describe_name = Ident::new(&describe_name, Span::call_site());
let argtys = f.function.arguments.iter();
let argtys = f.function.arguments.iter().map(|arg| &arg.ty);
let nargs = f.function.arguments.len() as u32;
let inform_ret = match f.function.ret {
let inform_ret = match &f.js_ret {
Some(ref t) => quote! { inform(1); <#t as WasmDescribe>::describe(); },
None => quote! { inform(0); },
};