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Diffstat (limited to '')
-rw-r--r-- | src/tools/rust-analyzer/crates/proc-macro-srv/src/abis/abi_1_63/ra_server.rs | 834 |
1 files changed, 834 insertions, 0 deletions
diff --git a/src/tools/rust-analyzer/crates/proc-macro-srv/src/abis/abi_1_63/ra_server.rs b/src/tools/rust-analyzer/crates/proc-macro-srv/src/abis/abi_1_63/ra_server.rs new file mode 100644 index 000000000..05a565fbf --- /dev/null +++ b/src/tools/rust-analyzer/crates/proc-macro-srv/src/abis/abi_1_63/ra_server.rs @@ -0,0 +1,834 @@ +//! Rustc proc-macro server implementation with tt +//! +//! Based on idea from <https://github.com/fedochet/rust-proc-macro-expander> +//! The lib-proc-macro server backend is `TokenStream`-agnostic, such that +//! we could provide any TokenStream implementation. +//! The original idea from fedochet is using proc-macro2 as backend, +//! we use tt instead for better integration with RA. +//! +//! FIXME: No span and source file information is implemented yet + +use super::proc_macro::bridge::{self, server}; + +use std::collections::HashMap; +use std::hash::Hash; +use std::iter::FromIterator; +use std::ops::Bound; +use std::{ascii, vec::IntoIter}; + +type Group = tt::Subtree; +type TokenTree = tt::TokenTree; +type Punct = tt::Punct; +type Spacing = tt::Spacing; +type Literal = tt::Literal; +type Span = tt::TokenId; + +#[derive(Debug, Default, Clone)] +pub struct TokenStream { + pub token_trees: Vec<TokenTree>, +} + +impl TokenStream { + pub fn new() -> Self { + TokenStream::default() + } + + pub fn with_subtree(subtree: tt::Subtree) -> Self { + if subtree.delimiter.is_some() { + TokenStream { token_trees: vec![TokenTree::Subtree(subtree)] } + } else { + TokenStream { token_trees: subtree.token_trees } + } + } + + pub fn into_subtree(self) -> tt::Subtree { + tt::Subtree { delimiter: None, token_trees: self.token_trees } + } + + pub fn is_empty(&self) -> bool { + self.token_trees.is_empty() + } +} + +/// Creates a token stream containing a single token tree. +impl From<TokenTree> for TokenStream { + fn from(tree: TokenTree) -> TokenStream { + TokenStream { token_trees: vec![tree] } + } +} + +/// Collects a number of token trees into a single stream. +impl FromIterator<TokenTree> for TokenStream { + fn from_iter<I: IntoIterator<Item = TokenTree>>(trees: I) -> Self { + trees.into_iter().map(TokenStream::from).collect() + } +} + +/// A "flattening" operation on token streams, collects token trees +/// from multiple token streams into a single stream. +impl FromIterator<TokenStream> for TokenStream { + fn from_iter<I: IntoIterator<Item = TokenStream>>(streams: I) -> Self { + let mut builder = TokenStreamBuilder::new(); + streams.into_iter().for_each(|stream| builder.push(stream)); + builder.build() + } +} + +impl Extend<TokenTree> for TokenStream { + fn extend<I: IntoIterator<Item = TokenTree>>(&mut self, trees: I) { + self.extend(trees.into_iter().map(TokenStream::from)); + } +} + +impl Extend<TokenStream> for TokenStream { + fn extend<I: IntoIterator<Item = TokenStream>>(&mut self, streams: I) { + for item in streams { + for tkn in item { + match tkn { + tt::TokenTree::Subtree(subtree) if subtree.delimiter.is_none() => { + self.token_trees.extend(subtree.token_trees); + } + _ => { + self.token_trees.push(tkn); + } + } + } + } + } +} + +#[derive(Clone)] +pub struct SourceFile { + // FIXME stub +} + +type Level = super::proc_macro::Level; +type LineColumn = super::proc_macro::LineColumn; + +/// A structure representing a diagnostic message and associated children +/// messages. +#[derive(Clone, Debug)] +pub struct Diagnostic { + level: Level, + message: String, + spans: Vec<Span>, + children: Vec<Diagnostic>, +} + +impl Diagnostic { + /// Creates a new diagnostic with the given `level` and `message`. + pub fn new<T: Into<String>>(level: Level, message: T) -> Diagnostic { + Diagnostic { level, message: message.into(), spans: vec![], children: vec![] } + } +} + +// Rustc Server Ident has to be `Copyable` +// We use a stub here for bypassing +#[derive(Hash, Eq, PartialEq, Copy, Clone)] +pub struct IdentId(u32); + +#[derive(Clone, Hash, Eq, PartialEq)] +struct IdentData(tt::Ident); + +#[derive(Default)] +struct IdentInterner { + idents: HashMap<IdentData, u32>, + ident_data: Vec<IdentData>, +} + +impl IdentInterner { + fn intern(&mut self, data: &IdentData) -> u32 { + if let Some(index) = self.idents.get(data) { + return *index; + } + + let index = self.idents.len() as u32; + self.ident_data.push(data.clone()); + self.idents.insert(data.clone(), index); + index + } + + fn get(&self, index: u32) -> &IdentData { + &self.ident_data[index as usize] + } + + #[allow(unused)] + fn get_mut(&mut self, index: u32) -> &mut IdentData { + self.ident_data.get_mut(index as usize).expect("Should be consistent") + } +} + +pub struct TokenStreamBuilder { + acc: TokenStream, +} + +/// Public implementation details for the `TokenStream` type, such as iterators. +pub mod token_stream { + use std::str::FromStr; + + use super::{TokenStream, TokenTree}; + + /// An iterator over `TokenStream`'s `TokenTree`s. + /// The iteration is "shallow", e.g., the iterator doesn't recurse into delimited groups, + /// and returns whole groups as token trees. + impl IntoIterator for TokenStream { + type Item = TokenTree; + type IntoIter = super::IntoIter<TokenTree>; + + fn into_iter(self) -> Self::IntoIter { + self.token_trees.into_iter() + } + } + + type LexError = String; + + /// Attempts to break the string into tokens and parse those tokens into a token stream. + /// May fail for a number of reasons, for example, if the string contains unbalanced delimiters + /// or characters not existing in the language. + /// All tokens in the parsed stream get `Span::call_site()` spans. + /// + /// NOTE: some errors may cause panics instead of returning `LexError`. We reserve the right to + /// change these errors into `LexError`s later. + impl FromStr for TokenStream { + type Err = LexError; + + fn from_str(src: &str) -> Result<TokenStream, LexError> { + let (subtree, _token_map) = + mbe::parse_to_token_tree(src).ok_or("Failed to parse from mbe")?; + + let subtree = subtree_replace_token_ids_with_unspecified(subtree); + Ok(TokenStream::with_subtree(subtree)) + } + } + + impl ToString for TokenStream { + fn to_string(&self) -> String { + tt::pretty(&self.token_trees) + } + } + + fn subtree_replace_token_ids_with_unspecified(subtree: tt::Subtree) -> tt::Subtree { + tt::Subtree { + delimiter: subtree + .delimiter + .map(|d| tt::Delimiter { id: tt::TokenId::unspecified(), ..d }), + token_trees: subtree + .token_trees + .into_iter() + .map(token_tree_replace_token_ids_with_unspecified) + .collect(), + } + } + + fn token_tree_replace_token_ids_with_unspecified(tt: tt::TokenTree) -> tt::TokenTree { + match tt { + tt::TokenTree::Leaf(leaf) => { + tt::TokenTree::Leaf(leaf_replace_token_ids_with_unspecified(leaf)) + } + tt::TokenTree::Subtree(subtree) => { + tt::TokenTree::Subtree(subtree_replace_token_ids_with_unspecified(subtree)) + } + } + } + + fn leaf_replace_token_ids_with_unspecified(leaf: tt::Leaf) -> tt::Leaf { + match leaf { + tt::Leaf::Literal(lit) => { + tt::Leaf::Literal(tt::Literal { id: tt::TokenId::unspecified(), ..lit }) + } + tt::Leaf::Punct(punct) => { + tt::Leaf::Punct(tt::Punct { id: tt::TokenId::unspecified(), ..punct }) + } + tt::Leaf::Ident(ident) => { + tt::Leaf::Ident(tt::Ident { id: tt::TokenId::unspecified(), ..ident }) + } + } + } +} + +impl TokenStreamBuilder { + fn new() -> TokenStreamBuilder { + TokenStreamBuilder { acc: TokenStream::new() } + } + + fn push(&mut self, stream: TokenStream) { + self.acc.extend(stream.into_iter()) + } + + fn build(self) -> TokenStream { + self.acc + } +} + +pub struct FreeFunctions; + +#[derive(Clone)] +pub struct TokenStreamIter { + trees: IntoIter<TokenTree>, +} + +#[derive(Default)] +pub struct RustAnalyzer { + ident_interner: IdentInterner, + // FIXME: store span information here. +} + +impl server::Types for RustAnalyzer { + type FreeFunctions = FreeFunctions; + type TokenStream = TokenStream; + type Group = Group; + type Punct = Punct; + type Ident = IdentId; + type Literal = Literal; + type SourceFile = SourceFile; + type Diagnostic = Diagnostic; + type Span = Span; + type MultiSpan = Vec<Span>; +} + +impl server::FreeFunctions for RustAnalyzer { + fn track_env_var(&mut self, _var: &str, _value: Option<&str>) { + // FIXME: track env var accesses + // https://github.com/rust-lang/rust/pull/71858 + } + fn track_path(&mut self, _path: &str) {} +} + +impl server::TokenStream for RustAnalyzer { + fn is_empty(&mut self, stream: &Self::TokenStream) -> bool { + stream.is_empty() + } + fn from_str(&mut self, src: &str) -> Self::TokenStream { + use std::str::FromStr; + + Self::TokenStream::from_str(src).expect("cannot parse string") + } + fn to_string(&mut self, stream: &Self::TokenStream) -> String { + stream.to_string() + } + fn from_token_tree( + &mut self, + tree: bridge::TokenTree<Self::Group, Self::Punct, Self::Ident, Self::Literal>, + ) -> Self::TokenStream { + match tree { + bridge::TokenTree::Group(group) => { + let tree = TokenTree::from(group); + Self::TokenStream::from_iter(vec![tree]) + } + + bridge::TokenTree::Ident(IdentId(index)) => { + let IdentData(ident) = self.ident_interner.get(index).clone(); + let ident: tt::Ident = ident; + let leaf = tt::Leaf::from(ident); + let tree = TokenTree::from(leaf); + Self::TokenStream::from_iter(vec![tree]) + } + + bridge::TokenTree::Literal(literal) => { + let leaf = tt::Leaf::from(literal); + let tree = TokenTree::from(leaf); + Self::TokenStream::from_iter(vec![tree]) + } + + bridge::TokenTree::Punct(p) => { + let leaf = tt::Leaf::from(p); + let tree = TokenTree::from(leaf); + Self::TokenStream::from_iter(vec![tree]) + } + } + } + + fn expand_expr(&mut self, self_: &Self::TokenStream) -> Result<Self::TokenStream, ()> { + Ok(self_.clone()) + } + + fn concat_trees( + &mut self, + base: Option<Self::TokenStream>, + trees: Vec<bridge::TokenTree<Self::Group, Self::Punct, Self::Ident, Self::Literal>>, + ) -> Self::TokenStream { + let mut builder = TokenStreamBuilder::new(); + if let Some(base) = base { + builder.push(base); + } + for tree in trees { + builder.push(self.from_token_tree(tree)); + } + builder.build() + } + + fn concat_streams( + &mut self, + base: Option<Self::TokenStream>, + streams: Vec<Self::TokenStream>, + ) -> Self::TokenStream { + let mut builder = TokenStreamBuilder::new(); + if let Some(base) = base { + builder.push(base); + } + for stream in streams { + builder.push(stream); + } + builder.build() + } + + fn into_trees( + &mut self, + stream: Self::TokenStream, + ) -> Vec<bridge::TokenTree<Self::Group, Self::Punct, Self::Ident, Self::Literal>> { + stream + .into_iter() + .map(|tree| match tree { + tt::TokenTree::Leaf(tt::Leaf::Ident(ident)) => { + bridge::TokenTree::Ident(IdentId(self.ident_interner.intern(&IdentData(ident)))) + } + tt::TokenTree::Leaf(tt::Leaf::Literal(lit)) => bridge::TokenTree::Literal(lit), + tt::TokenTree::Leaf(tt::Leaf::Punct(punct)) => bridge::TokenTree::Punct(punct), + tt::TokenTree::Subtree(subtree) => bridge::TokenTree::Group(subtree), + }) + .collect() + } +} + +fn delim_to_internal(d: bridge::Delimiter) -> Option<tt::Delimiter> { + let kind = match d { + bridge::Delimiter::Parenthesis => tt::DelimiterKind::Parenthesis, + bridge::Delimiter::Brace => tt::DelimiterKind::Brace, + bridge::Delimiter::Bracket => tt::DelimiterKind::Bracket, + bridge::Delimiter::None => return None, + }; + Some(tt::Delimiter { id: tt::TokenId::unspecified(), kind }) +} + +fn delim_to_external(d: Option<tt::Delimiter>) -> bridge::Delimiter { + match d.map(|it| it.kind) { + Some(tt::DelimiterKind::Parenthesis) => bridge::Delimiter::Parenthesis, + Some(tt::DelimiterKind::Brace) => bridge::Delimiter::Brace, + Some(tt::DelimiterKind::Bracket) => bridge::Delimiter::Bracket, + None => bridge::Delimiter::None, + } +} + +fn spacing_to_internal(spacing: bridge::Spacing) -> Spacing { + match spacing { + bridge::Spacing::Alone => Spacing::Alone, + bridge::Spacing::Joint => Spacing::Joint, + } +} + +fn spacing_to_external(spacing: Spacing) -> bridge::Spacing { + match spacing { + Spacing::Alone => bridge::Spacing::Alone, + Spacing::Joint => bridge::Spacing::Joint, + } +} + +impl server::Group for RustAnalyzer { + fn new( + &mut self, + delimiter: bridge::Delimiter, + stream: Option<Self::TokenStream>, + ) -> Self::Group { + Self::Group { + delimiter: delim_to_internal(delimiter), + token_trees: stream.unwrap_or_default().token_trees, + } + } + fn delimiter(&mut self, group: &Self::Group) -> bridge::Delimiter { + delim_to_external(group.delimiter) + } + + // NOTE: Return value of do not include delimiter + fn stream(&mut self, group: &Self::Group) -> Self::TokenStream { + TokenStream { token_trees: group.token_trees.clone() } + } + + fn span(&mut self, group: &Self::Group) -> Self::Span { + group.delimiter.map(|it| it.id).unwrap_or_else(tt::TokenId::unspecified) + } + + fn set_span(&mut self, group: &mut Self::Group, span: Self::Span) { + if let Some(delim) = &mut group.delimiter { + delim.id = span; + } + } + + fn span_open(&mut self, group: &Self::Group) -> Self::Span { + // FIXME we only store one `TokenId` for the delimiters + group.delimiter.map(|it| it.id).unwrap_or_else(tt::TokenId::unspecified) + } + + fn span_close(&mut self, group: &Self::Group) -> Self::Span { + // FIXME we only store one `TokenId` for the delimiters + group.delimiter.map(|it| it.id).unwrap_or_else(tt::TokenId::unspecified) + } +} + +impl server::Punct for RustAnalyzer { + fn new(&mut self, ch: char, spacing: bridge::Spacing) -> Self::Punct { + tt::Punct { + char: ch, + spacing: spacing_to_internal(spacing), + id: tt::TokenId::unspecified(), + } + } + fn as_char(&mut self, punct: Self::Punct) -> char { + punct.char + } + fn spacing(&mut self, punct: Self::Punct) -> bridge::Spacing { + spacing_to_external(punct.spacing) + } + fn span(&mut self, punct: Self::Punct) -> Self::Span { + punct.id + } + fn with_span(&mut self, punct: Self::Punct, span: Self::Span) -> Self::Punct { + tt::Punct { id: span, ..punct } + } +} + +impl server::Ident for RustAnalyzer { + fn new(&mut self, string: &str, span: Self::Span, _is_raw: bool) -> Self::Ident { + IdentId(self.ident_interner.intern(&IdentData(tt::Ident { text: string.into(), id: span }))) + } + + fn span(&mut self, ident: Self::Ident) -> Self::Span { + self.ident_interner.get(ident.0).0.id + } + fn with_span(&mut self, ident: Self::Ident, span: Self::Span) -> Self::Ident { + let data = self.ident_interner.get(ident.0); + let new = IdentData(tt::Ident { id: span, ..data.0.clone() }); + IdentId(self.ident_interner.intern(&new)) + } +} + +impl server::Literal for RustAnalyzer { + fn debug_kind(&mut self, _literal: &Self::Literal) -> String { + // r-a: debug_kind and suffix are unsupported; corresponding client code has been changed to not call these. + // They must still be present to be ABI-compatible and work with upstream proc_macro. + "".to_owned() + } + fn from_str(&mut self, s: &str) -> Result<Self::Literal, ()> { + Ok(Literal { text: s.into(), id: tt::TokenId::unspecified() }) + } + fn symbol(&mut self, literal: &Self::Literal) -> String { + literal.text.to_string() + } + fn suffix(&mut self, _literal: &Self::Literal) -> Option<String> { + None + } + + fn to_string(&mut self, literal: &Self::Literal) -> String { + literal.to_string() + } + + fn integer(&mut self, n: &str) -> Self::Literal { + let n = match n.parse::<i128>() { + Ok(n) => n.to_string(), + Err(_) => n.parse::<u128>().unwrap().to_string(), + }; + Literal { text: n.into(), id: tt::TokenId::unspecified() } + } + + fn typed_integer(&mut self, n: &str, kind: &str) -> Self::Literal { + macro_rules! def_suffixed_integer { + ($kind:ident, $($ty:ty),*) => { + match $kind { + $( + stringify!($ty) => { + let n: $ty = n.parse().unwrap(); + format!(concat!("{}", stringify!($ty)), n) + } + )* + _ => unimplemented!("unknown args for typed_integer: n {}, kind {}", n, $kind), + } + } + } + + let text = def_suffixed_integer! {kind, u8, u16, u32, u64, u128, usize, i8, i16, i32, i64, i128, isize}; + + Literal { text: text.into(), id: tt::TokenId::unspecified() } + } + + fn float(&mut self, n: &str) -> Self::Literal { + let n: f64 = n.parse().unwrap(); + let mut text = f64::to_string(&n); + if !text.contains('.') { + text += ".0" + } + Literal { text: text.into(), id: tt::TokenId::unspecified() } + } + + fn f32(&mut self, n: &str) -> Self::Literal { + let n: f32 = n.parse().unwrap(); + let text = format!("{}f32", n); + Literal { text: text.into(), id: tt::TokenId::unspecified() } + } + + fn f64(&mut self, n: &str) -> Self::Literal { + let n: f64 = n.parse().unwrap(); + let text = format!("{}f64", n); + Literal { text: text.into(), id: tt::TokenId::unspecified() } + } + + fn string(&mut self, string: &str) -> Self::Literal { + let mut escaped = String::new(); + for ch in string.chars() { + escaped.extend(ch.escape_debug()); + } + Literal { text: format!("\"{}\"", escaped).into(), id: tt::TokenId::unspecified() } + } + + fn character(&mut self, ch: char) -> Self::Literal { + Literal { text: format!("'{}'", ch).into(), id: tt::TokenId::unspecified() } + } + + fn byte_string(&mut self, bytes: &[u8]) -> Self::Literal { + let string = bytes + .iter() + .cloned() + .flat_map(ascii::escape_default) + .map(Into::<char>::into) + .collect::<String>(); + + Literal { text: format!("b\"{}\"", string).into(), id: tt::TokenId::unspecified() } + } + + fn span(&mut self, literal: &Self::Literal) -> Self::Span { + literal.id + } + + fn set_span(&mut self, literal: &mut Self::Literal, span: Self::Span) { + literal.id = span; + } + + fn subspan( + &mut self, + _literal: &Self::Literal, + _start: Bound<usize>, + _end: Bound<usize>, + ) -> Option<Self::Span> { + // FIXME handle span + None + } +} + +impl server::SourceFile for RustAnalyzer { + // FIXME these are all stubs + fn eq(&mut self, _file1: &Self::SourceFile, _file2: &Self::SourceFile) -> bool { + true + } + fn path(&mut self, _file: &Self::SourceFile) -> String { + String::new() + } + fn is_real(&mut self, _file: &Self::SourceFile) -> bool { + true + } +} + +impl server::Diagnostic for RustAnalyzer { + fn new(&mut self, level: Level, msg: &str, spans: Self::MultiSpan) -> Self::Diagnostic { + let mut diag = Diagnostic::new(level, msg); + diag.spans = spans; + diag + } + + fn sub( + &mut self, + _diag: &mut Self::Diagnostic, + _level: Level, + _msg: &str, + _spans: Self::MultiSpan, + ) { + // FIXME handle diagnostic + // + } + + fn emit(&mut self, _diag: Self::Diagnostic) { + // FIXME handle diagnostic + // diag.emit() + } +} + +impl server::Span for RustAnalyzer { + fn debug(&mut self, span: Self::Span) -> String { + format!("{:?}", span.0) + } + fn def_site(&mut self) -> Self::Span { + // MySpan(self.span_interner.intern(&MySpanData(Span::def_site()))) + // FIXME handle span + tt::TokenId::unspecified() + } + fn call_site(&mut self) -> Self::Span { + // MySpan(self.span_interner.intern(&MySpanData(Span::call_site()))) + // FIXME handle span + tt::TokenId::unspecified() + } + fn source_file(&mut self, _span: Self::Span) -> Self::SourceFile { + SourceFile {} + } + fn save_span(&mut self, _span: Self::Span) -> usize { + // FIXME stub + 0 + } + fn recover_proc_macro_span(&mut self, _id: usize) -> Self::Span { + // FIXME stub + tt::TokenId::unspecified() + } + /// Recent feature, not yet in the proc_macro + /// + /// See PR: + /// https://github.com/rust-lang/rust/pull/55780 + fn source_text(&mut self, _span: Self::Span) -> Option<String> { + None + } + + fn parent(&mut self, _span: Self::Span) -> Option<Self::Span> { + // FIXME handle span + None + } + fn source(&mut self, span: Self::Span) -> Self::Span { + // FIXME handle span + span + } + fn start(&mut self, _span: Self::Span) -> LineColumn { + // FIXME handle span + LineColumn { line: 0, column: 0 } + } + fn end(&mut self, _span: Self::Span) -> LineColumn { + // FIXME handle span + LineColumn { line: 0, column: 0 } + } + fn join(&mut self, first: Self::Span, _second: Self::Span) -> Option<Self::Span> { + // Just return the first span again, because some macros will unwrap the result. + Some(first) + } + fn resolved_at(&mut self, _span: Self::Span, _at: Self::Span) -> Self::Span { + // FIXME handle span + tt::TokenId::unspecified() + } + + fn mixed_site(&mut self) -> Self::Span { + // FIXME handle span + tt::TokenId::unspecified() + } + + fn after(&mut self, _self_: Self::Span) -> Self::Span { + tt::TokenId::unspecified() + } + + fn before(&mut self, _self_: Self::Span) -> Self::Span { + tt::TokenId::unspecified() + } +} + +impl server::MultiSpan for RustAnalyzer { + fn new(&mut self) -> Self::MultiSpan { + // FIXME handle span + vec![] + } + + fn push(&mut self, other: &mut Self::MultiSpan, span: Self::Span) { + //TODP + other.push(span) + } +} + +#[cfg(test)] +mod tests { + use super::super::proc_macro::bridge::server::Literal; + use super::*; + + #[test] + fn test_ra_server_literals() { + let mut srv = RustAnalyzer { ident_interner: IdentInterner::default() }; + assert_eq!(srv.integer("1234").text, "1234"); + + assert_eq!(srv.typed_integer("12", "u8").text, "12u8"); + assert_eq!(srv.typed_integer("255", "u16").text, "255u16"); + assert_eq!(srv.typed_integer("1234", "u32").text, "1234u32"); + assert_eq!(srv.typed_integer("15846685", "u64").text, "15846685u64"); + assert_eq!(srv.typed_integer("15846685258", "u128").text, "15846685258u128"); + assert_eq!(srv.typed_integer("156788984", "usize").text, "156788984usize"); + assert_eq!(srv.typed_integer("127", "i8").text, "127i8"); + assert_eq!(srv.typed_integer("255", "i16").text, "255i16"); + assert_eq!(srv.typed_integer("1234", "i32").text, "1234i32"); + assert_eq!(srv.typed_integer("15846685", "i64").text, "15846685i64"); + assert_eq!(srv.typed_integer("15846685258", "i128").text, "15846685258i128"); + assert_eq!(srv.float("0").text, "0.0"); + assert_eq!(srv.float("15684.5867").text, "15684.5867"); + assert_eq!(srv.f32("15684.58").text, "15684.58f32"); + assert_eq!(srv.f64("15684.58").text, "15684.58f64"); + + assert_eq!(srv.string("hello_world").text, "\"hello_world\""); + assert_eq!(srv.character('c').text, "'c'"); + assert_eq!(srv.byte_string(b"1234586\x88").text, "b\"1234586\\x88\""); + + // u128::max + assert_eq!( + srv.integer("340282366920938463463374607431768211455").text, + "340282366920938463463374607431768211455" + ); + // i128::min + assert_eq!( + srv.integer("-170141183460469231731687303715884105728").text, + "-170141183460469231731687303715884105728" + ); + } + + #[test] + fn test_ra_server_to_string() { + let s = TokenStream { + token_trees: vec![ + tt::TokenTree::Leaf(tt::Leaf::Ident(tt::Ident { + text: "struct".into(), + id: tt::TokenId::unspecified(), + })), + tt::TokenTree::Leaf(tt::Leaf::Ident(tt::Ident { + text: "T".into(), + id: tt::TokenId::unspecified(), + })), + tt::TokenTree::Subtree(tt::Subtree { + delimiter: Some(tt::Delimiter { + id: tt::TokenId::unspecified(), + kind: tt::DelimiterKind::Brace, + }), + token_trees: vec![], + }), + ], + }; + + assert_eq!(s.to_string(), "struct T {}"); + } + + #[test] + fn test_ra_server_from_str() { + use std::str::FromStr; + let subtree_paren_a = tt::TokenTree::Subtree(tt::Subtree { + delimiter: Some(tt::Delimiter { + id: tt::TokenId::unspecified(), + kind: tt::DelimiterKind::Parenthesis, + }), + token_trees: vec![tt::TokenTree::Leaf(tt::Leaf::Ident(tt::Ident { + text: "a".into(), + id: tt::TokenId::unspecified(), + }))], + }); + + let t1 = TokenStream::from_str("(a)").unwrap(); + assert_eq!(t1.token_trees.len(), 1); + assert_eq!(t1.token_trees[0], subtree_paren_a); + + let t2 = TokenStream::from_str("(a);").unwrap(); + assert_eq!(t2.token_trees.len(), 2); + assert_eq!(t2.token_trees[0], subtree_paren_a); + + let underscore = TokenStream::from_str("_").unwrap(); + assert_eq!( + underscore.token_trees[0], + tt::TokenTree::Leaf(tt::Leaf::Ident(tt::Ident { + text: "_".into(), + id: tt::TokenId::unspecified(), + })) + ); + } +} |