From deba1fedfaac49804896d238e16aeb32ea8a2d97 Mon Sep 17 00:00:00 2001 From: Aleksey Kladov Date: Tue, 20 Aug 2019 19:16:57 +0300 Subject: :arrow_up: rustc_lexer --- crates/ra_syntax/src/parsing/lexer.rs | 136 ++++++++++++---------------------- 1 file changed, 48 insertions(+), 88 deletions(-) (limited to 'crates/ra_syntax/src/parsing') diff --git a/crates/ra_syntax/src/parsing/lexer.rs b/crates/ra_syntax/src/parsing/lexer.rs index 06822ea91..bdb01d40b 100644 --- a/crates/ra_syntax/src/parsing/lexer.rs +++ b/crates/ra_syntax/src/parsing/lexer.rs @@ -12,16 +12,16 @@ pub struct Token { pub len: TextUnit, } -fn match_literal_kind(kind: ra_rustc_lexer::LiteralKind) -> SyntaxKind { +fn match_literal_kind(kind: rustc_lexer::LiteralKind) -> SyntaxKind { match kind { - ra_rustc_lexer::LiteralKind::Int { .. } => INT_NUMBER, - ra_rustc_lexer::LiteralKind::Float { .. } => FLOAT_NUMBER, - ra_rustc_lexer::LiteralKind::Char { .. } => CHAR, - ra_rustc_lexer::LiteralKind::Byte { .. } => BYTE, - ra_rustc_lexer::LiteralKind::Str { .. } => STRING, - ra_rustc_lexer::LiteralKind::ByteStr { .. } => BYTE_STRING, - ra_rustc_lexer::LiteralKind::RawStr { .. } => RAW_STRING, - ra_rustc_lexer::LiteralKind::RawByteStr { .. } => RAW_BYTE_STRING, + rustc_lexer::LiteralKind::Int { .. } => INT_NUMBER, + rustc_lexer::LiteralKind::Float { .. } => FLOAT_NUMBER, + rustc_lexer::LiteralKind::Char { .. } => CHAR, + rustc_lexer::LiteralKind::Byte { .. } => BYTE, + rustc_lexer::LiteralKind::Str { .. } => STRING, + rustc_lexer::LiteralKind::ByteStr { .. } => BYTE_STRING, + rustc_lexer::LiteralKind::RawStr { .. } => RAW_STRING, + rustc_lexer::LiteralKind::RawByteStr { .. } => RAW_BYTE_STRING, } } @@ -32,32 +32,17 @@ pub fn tokenize(text: &str) -> Vec { } let mut text = text; let mut acc = Vec::new(); - if let Some(len) = ra_rustc_lexer::strip_shebang(text) { + if let Some(len) = rustc_lexer::strip_shebang(text) { acc.push(Token { kind: SHEBANG, len: TextUnit::from_usize(len) }); text = &text[len..]; } while !text.is_empty() { - let rustc_token = ra_rustc_lexer::first_token(text); - macro_rules! decompose { - ($t1:expr, $t2:expr) => {{ - acc.push(Token { kind: $t1, len: 1.into() }); - acc.push(Token { kind: $t2, len: 1.into() }); - text = &text[2..]; - continue; - }}; - ($t1:expr, $t2:expr, $t3:expr) => {{ - acc.push(Token { kind: $t1, len: 1.into() }); - acc.push(Token { kind: $t2, len: 1.into() }); - acc.push(Token { kind: $t3, len: 1.into() }); - text = &text[3..]; - continue; - }}; - } + let rustc_token = rustc_lexer::first_token(text); let kind = match rustc_token.kind { - ra_rustc_lexer::TokenKind::LineComment => COMMENT, - ra_rustc_lexer::TokenKind::BlockComment { .. } => COMMENT, - ra_rustc_lexer::TokenKind::Whitespace => WHITESPACE, - ra_rustc_lexer::TokenKind::Ident => { + rustc_lexer::TokenKind::LineComment => COMMENT, + rustc_lexer::TokenKind::BlockComment { .. } => COMMENT, + rustc_lexer::TokenKind::Whitespace => WHITESPACE, + rustc_lexer::TokenKind::Ident => { let token_text = &text[..rustc_token.len]; if token_text == "_" { UNDERSCORE @@ -65,62 +50,37 @@ pub fn tokenize(text: &str) -> Vec { SyntaxKind::from_keyword(&text[..rustc_token.len]).unwrap_or(IDENT) } } - ra_rustc_lexer::TokenKind::RawIdent => IDENT, - ra_rustc_lexer::TokenKind::Literal { kind, .. } => match_literal_kind(kind), - ra_rustc_lexer::TokenKind::Lifetime { .. } => LIFETIME, - ra_rustc_lexer::TokenKind::Semi => SEMI, - ra_rustc_lexer::TokenKind::Comma => COMMA, - ra_rustc_lexer::TokenKind::DotDotDot => decompose!(DOT, DOT, DOT), - ra_rustc_lexer::TokenKind::DotDotEq => decompose!(DOT, DOT, EQ), - ra_rustc_lexer::TokenKind::DotDot => decompose!(DOT, DOT), - ra_rustc_lexer::TokenKind::Dot => DOT, - ra_rustc_lexer::TokenKind::OpenParen => L_PAREN, - ra_rustc_lexer::TokenKind::CloseParen => R_PAREN, - ra_rustc_lexer::TokenKind::OpenBrace => L_CURLY, - ra_rustc_lexer::TokenKind::CloseBrace => R_CURLY, - ra_rustc_lexer::TokenKind::OpenBracket => L_BRACK, - ra_rustc_lexer::TokenKind::CloseBracket => R_BRACK, - ra_rustc_lexer::TokenKind::At => AT, - ra_rustc_lexer::TokenKind::Pound => POUND, - ra_rustc_lexer::TokenKind::Tilde => TILDE, - ra_rustc_lexer::TokenKind::Question => QUESTION, - ra_rustc_lexer::TokenKind::ColonColon => decompose!(COLON, COLON), - ra_rustc_lexer::TokenKind::Colon => COLON, - ra_rustc_lexer::TokenKind::Dollar => DOLLAR, - ra_rustc_lexer::TokenKind::EqEq => decompose!(EQ, EQ), - ra_rustc_lexer::TokenKind::Eq => EQ, - ra_rustc_lexer::TokenKind::FatArrow => decompose!(EQ, R_ANGLE), - ra_rustc_lexer::TokenKind::Ne => decompose!(EXCL, EQ), - ra_rustc_lexer::TokenKind::Not => EXCL, - ra_rustc_lexer::TokenKind::Le => decompose!(L_ANGLE, EQ), - ra_rustc_lexer::TokenKind::LArrow => decompose!(COLON, MINUS), - ra_rustc_lexer::TokenKind::Lt => L_ANGLE, - ra_rustc_lexer::TokenKind::ShlEq => decompose!(L_ANGLE, L_ANGLE, EQ), - ra_rustc_lexer::TokenKind::Shl => decompose!(L_ANGLE, L_ANGLE), - ra_rustc_lexer::TokenKind::Ge => decompose!(R_ANGLE, EQ), - ra_rustc_lexer::TokenKind::Gt => R_ANGLE, - ra_rustc_lexer::TokenKind::ShrEq => decompose!(R_ANGLE, R_ANGLE, EQ), - ra_rustc_lexer::TokenKind::Shr => decompose!(R_ANGLE, R_ANGLE), - ra_rustc_lexer::TokenKind::RArrow => decompose!(MINUS, R_ANGLE), - ra_rustc_lexer::TokenKind::Minus => MINUS, - ra_rustc_lexer::TokenKind::MinusEq => decompose!(MINUS, EQ), - ra_rustc_lexer::TokenKind::And => AMP, - ra_rustc_lexer::TokenKind::AndAnd => decompose!(AMP, AMP), - ra_rustc_lexer::TokenKind::AndEq => decompose!(AMP, EQ), - ra_rustc_lexer::TokenKind::Or => PIPE, - ra_rustc_lexer::TokenKind::OrOr => decompose!(PIPE, PIPE), - ra_rustc_lexer::TokenKind::OrEq => decompose!(PIPE, EQ), - ra_rustc_lexer::TokenKind::PlusEq => decompose!(PLUS, EQ), - ra_rustc_lexer::TokenKind::Plus => PLUS, - ra_rustc_lexer::TokenKind::StarEq => decompose!(STAR, EQ), - ra_rustc_lexer::TokenKind::Star => STAR, - ra_rustc_lexer::TokenKind::SlashEq => decompose!(SLASH, EQ), - ra_rustc_lexer::TokenKind::Slash => SLASH, - ra_rustc_lexer::TokenKind::CaretEq => decompose!(CARET, EQ), - ra_rustc_lexer::TokenKind::Caret => CARET, - ra_rustc_lexer::TokenKind::PercentEq => decompose!(PERCENT, EQ), - ra_rustc_lexer::TokenKind::Percent => PERCENT, - ra_rustc_lexer::TokenKind::Unknown => ERROR, + rustc_lexer::TokenKind::RawIdent => IDENT, + rustc_lexer::TokenKind::Literal { kind, .. } => match_literal_kind(kind), + rustc_lexer::TokenKind::Lifetime { .. } => LIFETIME, + rustc_lexer::TokenKind::Semi => SEMI, + rustc_lexer::TokenKind::Comma => COMMA, + rustc_lexer::TokenKind::Dot => DOT, + rustc_lexer::TokenKind::OpenParen => L_PAREN, + rustc_lexer::TokenKind::CloseParen => R_PAREN, + rustc_lexer::TokenKind::OpenBrace => L_CURLY, + rustc_lexer::TokenKind::CloseBrace => R_CURLY, + rustc_lexer::TokenKind::OpenBracket => L_BRACK, + rustc_lexer::TokenKind::CloseBracket => R_BRACK, + rustc_lexer::TokenKind::At => AT, + rustc_lexer::TokenKind::Pound => POUND, + rustc_lexer::TokenKind::Tilde => TILDE, + rustc_lexer::TokenKind::Question => QUESTION, + rustc_lexer::TokenKind::Colon => COLON, + rustc_lexer::TokenKind::Dollar => DOLLAR, + rustc_lexer::TokenKind::Eq => EQ, + rustc_lexer::TokenKind::Not => EXCL, + rustc_lexer::TokenKind::Lt => L_ANGLE, + rustc_lexer::TokenKind::Gt => R_ANGLE, + rustc_lexer::TokenKind::Minus => MINUS, + rustc_lexer::TokenKind::And => AMP, + rustc_lexer::TokenKind::Or => PIPE, + rustc_lexer::TokenKind::Plus => PLUS, + rustc_lexer::TokenKind::Star => STAR, + rustc_lexer::TokenKind::Slash => SLASH, + rustc_lexer::TokenKind::Caret => CARET, + rustc_lexer::TokenKind::Percent => PERCENT, + rustc_lexer::TokenKind::Unknown => ERROR, }; let token = Token { kind, len: TextUnit::from_usize(rustc_token.len) }; acc.push(token); @@ -130,12 +90,12 @@ pub fn tokenize(text: &str) -> Vec { } pub fn classify_literal(text: &str) -> Option { - let t = ra_rustc_lexer::first_token(text); + let t = rustc_lexer::first_token(text); if t.len != text.len() { return None; } let kind = match t.kind { - ra_rustc_lexer::TokenKind::Literal { kind, .. } => match_literal_kind(kind), + rustc_lexer::TokenKind::Literal { kind, .. } => match_literal_kind(kind), _ => return None, }; Some(Token { kind, len: TextUnit::from_usize(t.len) }) -- cgit v1.2.3