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|
use crate::syntax::atom::Atom::*;
use crate::syntax::{
Atom, Derive, Enum, ExternFn, ExternType, Impl, Receiver, Ref, ResolvableName, Signature,
Slice, Struct, Ty1, Type, TypeAlias, Var,
};
use proc_macro2::{Ident, Span, TokenStream};
use quote::{quote_spanned, ToTokens};
use syn::Token;
impl ToTokens for Type {
fn to_tokens(&self, tokens: &mut TokenStream) {
match self {
Type::Ident(ident) => {
if ident.rust == CxxString {
let span = ident.rust.span();
tokens.extend(quote_spanned!(span=> ::cxx::));
}
ident.rust.to_tokens(tokens);
}
Type::RustBox(ty) | Type::UniquePtr(ty) | Type::CxxVector(ty) | Type::RustVec(ty) => {
ty.to_tokens(tokens)
}
Type::Ref(r) | Type::Str(r) | Type::SliceRefU8(r) => r.to_tokens(tokens),
Type::Slice(s) => s.to_tokens(tokens),
Type::Fn(f) => f.to_tokens(tokens),
Type::Void(span) => tokens.extend(quote_spanned!(*span=> ())),
}
}
}
impl ToTokens for Var {
fn to_tokens(&self, tokens: &mut TokenStream) {
self.ident.to_tokens(tokens);
Token).to_tokens(tokens);
self.ty.to_tokens(tokens);
}
}
impl ToTokens for Ty1 {
fn to_tokens(&self, tokens: &mut TokenStream) {
let span = self.name.span();
let name = self.name.to_string();
if let "UniquePtr" | "CxxVector" = name.as_str() {
tokens.extend(quote_spanned!(span=> ::cxx::));
} else if name == "Vec" {
tokens.extend(quote_spanned!(span=> ::std::vec::));
}
self.name.to_tokens(tokens);
self.langle.to_tokens(tokens);
self.inner.to_tokens(tokens);
self.rangle.to_tokens(tokens);
}
}
impl ToTokens for Ref {
fn to_tokens(&self, tokens: &mut TokenStream) {
self.ampersand.to_tokens(tokens);
self.lifetime.to_tokens(tokens);
self.mutability.to_tokens(tokens);
self.inner.to_tokens(tokens);
}
}
impl ToTokens for Slice {
fn to_tokens(&self, tokens: &mut TokenStream) {
self.bracket.surround(tokens, |tokens| {
self.inner.to_tokens(tokens);
});
}
}
impl ToTokens for Derive {
fn to_tokens(&self, tokens: &mut TokenStream) {
Ident::new(self.as_ref(), Span::call_site()).to_tokens(tokens);
}
}
impl ToTokens for Atom {
fn to_tokens(&self, tokens: &mut TokenStream) {
Ident::new(self.as_ref(), Span::call_site()).to_tokens(tokens);
}
}
impl ToTokens for ExternType {
fn to_tokens(&self, tokens: &mut TokenStream) {
// Notional token range for error reporting purposes.
self.type_token.to_tokens(tokens);
self.name.rust.to_tokens(tokens);
}
}
impl ToTokens for TypeAlias {
fn to_tokens(&self, tokens: &mut TokenStream) {
// Notional token range for error reporting purposes.
self.type_token.to_tokens(tokens);
self.name.rust.to_tokens(tokens);
}
}
impl ToTokens for Struct {
fn to_tokens(&self, tokens: &mut TokenStream) {
// Notional token range for error reporting purposes.
self.struct_token.to_tokens(tokens);
self.name.rust.to_tokens(tokens);
}
}
impl ToTokens for Enum {
fn to_tokens(&self, tokens: &mut TokenStream) {
// Notional token range for error reporting purposes.
self.enum_token.to_tokens(tokens);
self.name.rust.to_tokens(tokens);
}
}
impl ToTokens for ExternFn {
fn to_tokens(&self, tokens: &mut TokenStream) {
// Notional token range for error reporting purposes.
self.sig.fn_token.to_tokens(tokens);
self.semi_token.to_tokens(tokens);
}
}
impl ToTokens for Impl {
fn to_tokens(&self, tokens: &mut TokenStream) {
self.impl_token.to_tokens(tokens);
self.ty.to_tokens(tokens);
self.brace_token.surround(tokens, |_tokens| {});
}
}
impl ToTokens for Signature {
fn to_tokens(&self, tokens: &mut TokenStream) {
self.fn_token.to_tokens(tokens);
self.paren_token.surround(tokens, |tokens| {
self.args.to_tokens(tokens);
});
if let Some(ret) = &self.ret {
Token.to_tokens(tokens);
if let Some((result, langle, rangle)) = self.throws_tokens {
result.to_tokens(tokens);
langle.to_tokens(tokens);
ret.to_tokens(tokens);
rangle.to_tokens(tokens);
} else {
ret.to_tokens(tokens);
}
}
}
}
impl ToTokens for ResolvableName {
fn to_tokens(&self, tokens: &mut TokenStream) {
self.rust.to_tokens(tokens);
}
}
pub struct ReceiverType<'a>(&'a Receiver);
impl Receiver {
// &TheType
pub fn ty(&self) -> ReceiverType {
ReceiverType(self)
}
}
impl ToTokens for ReceiverType<'_> {
fn to_tokens(&self, tokens: &mut TokenStream) {
self.0.ampersand.to_tokens(tokens);
self.0.lifetime.to_tokens(tokens);
self.0.mutability.to_tokens(tokens);
self.0.ty.to_tokens(tokens);
}
}
|
