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G: start attributes
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commit
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@ -39,7 +39,7 @@ Grammar(
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"EQEQ",
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"FAT_ARROW",
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"NEQ",
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"NOT",
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"EXCL",
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"LIFETIME",
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"CHAR",
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"BYTE",
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@ -65,5 +65,6 @@ Grammar(
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"STRUCT_ITEM",
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"STRUCT_FIELD",
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"FN_ITEM",
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"ATTR",
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]
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)
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@ -129,7 +129,7 @@ fn next_token_inner(c: char, ptr: &mut Ptr) -> SyntaxKind {
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ptr.bump();
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NEQ
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}
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_ => NOT,
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_ => EXCL,
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},
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'-' => return if ptr.next_is('>') {
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ptr.bump();
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@ -17,10 +17,6 @@ pub fn file(p: &mut Parser) {
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})
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}
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fn inner_attributes(_: &mut Parser) {
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//TODO
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}
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fn item_first(p: &Parser) -> bool {
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let current = match p.current() {
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Some(c) => c,
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@ -58,6 +54,20 @@ fn fn_item(p: &mut Parser) {
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// Paths, types, attributes, and stuff //
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fn inner_attributes(p: &mut Parser) {
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many(p, inner_attribute)
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}
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fn inner_attribute(p: &mut Parser) -> bool {
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if !(p.lookahead(&[EXCL, POUND])) {
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return false;
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}
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node(p, ATTR, |p| {
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p.bump_n(2);
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});
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true
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}
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fn outer_attributes(_: &mut Parser) {
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}
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@ -143,9 +153,15 @@ impl<'p> Parser<'p> {
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}
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}
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pub(crate) fn optional(&mut self, kind: SyntaxKind) {
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fn optional(&mut self, kind: SyntaxKind) {
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if self.current_is(kind) {
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self.bump();
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}
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}
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fn bump_n(&mut self, n: u8) {
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for _ in 0..n {
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self.bump();
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}
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}
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}
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@ -86,6 +86,14 @@ impl<'t> Parser<'t> {
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Some(kind)
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}
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pub(crate) fn lookahead(&self, kinds: &[SyntaxKind]) -> bool {
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if self.non_ws_tokens[self.pos..].len() < kinds.len() {
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return false
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}
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kinds.iter().zip(self.non_ws_tokens[self.pos..].iter())
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.all(|(&k1, &(idx, _))| k1 == self.raw_tokens[idx].kind)
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}
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pub(crate) fn curly_block<F: FnOnce(&mut Parser)>(&mut self, f: F) -> bool {
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let old_level = self.curly_level;
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let old_limit = self.curly_limit;
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@ -38,7 +38,7 @@ pub const EQ: SyntaxKind = SyntaxKind(33);
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pub const EQEQ: SyntaxKind = SyntaxKind(34);
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pub const FAT_ARROW: SyntaxKind = SyntaxKind(35);
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pub const NEQ: SyntaxKind = SyntaxKind(36);
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pub const NOT: SyntaxKind = SyntaxKind(37);
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pub const EXCL: SyntaxKind = SyntaxKind(37);
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pub const LIFETIME: SyntaxKind = SyntaxKind(38);
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pub const CHAR: SyntaxKind = SyntaxKind(39);
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pub const BYTE: SyntaxKind = SyntaxKind(40);
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@ -62,8 +62,9 @@ pub const FILE: SyntaxKind = SyntaxKind(57);
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pub const STRUCT_ITEM: SyntaxKind = SyntaxKind(58);
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pub const STRUCT_FIELD: SyntaxKind = SyntaxKind(59);
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pub const FN_ITEM: SyntaxKind = SyntaxKind(60);
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pub const ATTR: SyntaxKind = SyntaxKind(61);
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static INFOS: [SyntaxInfo; 61] = [
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static INFOS: [SyntaxInfo; 62] = [
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SyntaxInfo { name: "USE_KW" },
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SyntaxInfo { name: "FN_KW" },
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SyntaxInfo { name: "STRUCT_KW" },
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@ -101,7 +102,7 @@ static INFOS: [SyntaxInfo; 61] = [
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SyntaxInfo { name: "EQEQ" },
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SyntaxInfo { name: "FAT_ARROW" },
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SyntaxInfo { name: "NEQ" },
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SyntaxInfo { name: "NOT" },
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SyntaxInfo { name: "EXCL" },
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SyntaxInfo { name: "LIFETIME" },
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SyntaxInfo { name: "CHAR" },
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SyntaxInfo { name: "BYTE" },
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@ -125,6 +126,7 @@ static INFOS: [SyntaxInfo; 61] = [
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SyntaxInfo { name: "STRUCT_ITEM" },
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SyntaxInfo { name: "STRUCT_FIELD" },
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SyntaxInfo { name: "FN_ITEM" },
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SyntaxInfo { name: "ATTR" },
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];
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pub(crate) fn syntax_info(kind: SyntaxKind) -> &'static SyntaxInfo {
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@ -58,7 +58,7 @@ EQ 1 "="
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WHITESPACE 1 " "
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FAT_ARROW 2 "=>"
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WHITESPACE 1 "\n"
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NOT 1 "!"
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EXCL 1 "!"
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WHITESPACE 1 " "
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NEQ 2 "!="
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WHITESPACE 1 "\n"
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10
tests/data/parser/ok/0006_inner_attributes.rs
Normal file
10
tests/data/parser/ok/0006_inner_attributes.rs
Normal file
@ -0,0 +1,10 @@
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#![attr]
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#![attr(true)]
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#![attr(ident)]
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#![attr(ident, 100, true, "true", ident = 100, ident = "hello", ident(100))]
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#![attr(100)]
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#![attr(enabled = true)]
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#![enabled(true)]
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#![attr("hello")]
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#![repr(C, align = 4)]
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#![repr(C, align(4))]
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135
tests/data/parser/ok/0006_inner_attributes.txt
Normal file
135
tests/data/parser/ok/0006_inner_attributes.txt
Normal file
@ -0,0 +1,135 @@
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FILE@[0; 236)
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ERROR@[0; 236)
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err: `expected item`
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POUND@[0; 1)
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EXCL@[1; 2)
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L_BRACK@[2; 3)
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IDENT@[3; 7)
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R_BRACK@[7; 8)
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WHITESPACE@[8; 9)
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POUND@[9; 10)
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EXCL@[10; 11)
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L_BRACK@[11; 12)
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IDENT@[12; 16)
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L_PAREN@[16; 17)
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IDENT@[17; 21)
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R_PAREN@[21; 22)
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R_BRACK@[22; 23)
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WHITESPACE@[23; 24)
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POUND@[24; 25)
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EXCL@[25; 26)
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L_BRACK@[26; 27)
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IDENT@[27; 31)
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L_PAREN@[31; 32)
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IDENT@[32; 37)
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R_PAREN@[37; 38)
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R_BRACK@[38; 39)
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WHITESPACE@[39; 40)
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POUND@[40; 41)
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EXCL@[41; 42)
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L_BRACK@[42; 43)
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IDENT@[43; 47)
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L_PAREN@[47; 48)
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IDENT@[48; 53)
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COMMA@[53; 54)
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WHITESPACE@[54; 55)
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INT_NUMBER@[55; 58)
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COMMA@[58; 59)
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WHITESPACE@[59; 60)
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IDENT@[60; 64)
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COMMA@[64; 65)
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WHITESPACE@[65; 66)
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STRING@[66; 72)
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COMMA@[72; 73)
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WHITESPACE@[73; 74)
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IDENT@[74; 79)
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WHITESPACE@[79; 80)
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EQ@[80; 81)
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WHITESPACE@[81; 82)
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INT_NUMBER@[82; 85)
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COMMA@[85; 86)
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WHITESPACE@[86; 87)
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IDENT@[87; 92)
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WHITESPACE@[92; 93)
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EQ@[93; 94)
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WHITESPACE@[94; 95)
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STRING@[95; 102)
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COMMA@[102; 103)
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WHITESPACE@[103; 104)
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IDENT@[104; 109)
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L_PAREN@[109; 110)
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INT_NUMBER@[110; 113)
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R_PAREN@[113; 114)
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R_PAREN@[114; 115)
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R_BRACK@[115; 116)
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WHITESPACE@[116; 117)
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POUND@[117; 118)
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EXCL@[118; 119)
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L_BRACK@[119; 120)
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IDENT@[120; 124)
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L_PAREN@[124; 125)
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INT_NUMBER@[125; 128)
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R_PAREN@[128; 129)
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R_BRACK@[129; 130)
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WHITESPACE@[130; 131)
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POUND@[131; 132)
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EXCL@[132; 133)
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L_BRACK@[133; 134)
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IDENT@[134; 138)
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L_PAREN@[138; 139)
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IDENT@[139; 146)
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WHITESPACE@[146; 147)
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EQ@[147; 148)
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WHITESPACE@[148; 149)
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IDENT@[149; 153)
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R_PAREN@[153; 154)
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R_BRACK@[154; 155)
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WHITESPACE@[155; 156)
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POUND@[156; 157)
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EXCL@[157; 158)
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L_BRACK@[158; 159)
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IDENT@[159; 166)
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L_PAREN@[166; 167)
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IDENT@[167; 171)
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R_PAREN@[171; 172)
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R_BRACK@[172; 173)
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WHITESPACE@[173; 174)
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POUND@[174; 175)
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EXCL@[175; 176)
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L_BRACK@[176; 177)
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IDENT@[177; 181)
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L_PAREN@[181; 182)
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STRING@[182; 189)
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R_PAREN@[189; 190)
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R_BRACK@[190; 191)
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WHITESPACE@[191; 192)
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POUND@[192; 193)
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EXCL@[193; 194)
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L_BRACK@[194; 195)
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IDENT@[195; 199)
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L_PAREN@[199; 200)
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IDENT@[200; 201)
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COMMA@[201; 202)
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WHITESPACE@[202; 203)
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IDENT@[203; 208)
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WHITESPACE@[208; 209)
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EQ@[209; 210)
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WHITESPACE@[210; 211)
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INT_NUMBER@[211; 212)
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R_PAREN@[212; 213)
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R_BRACK@[213; 214)
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WHITESPACE@[214; 215)
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POUND@[215; 216)
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EXCL@[216; 217)
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L_BRACK@[217; 218)
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IDENT@[218; 222)
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L_PAREN@[222; 223)
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IDENT@[223; 224)
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COMMA@[224; 225)
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WHITESPACE@[225; 226)
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IDENT@[226; 231)
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L_PAREN@[231; 232)
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INT_NUMBER@[232; 233)
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R_PAREN@[233; 234)
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R_PAREN@[234; 235)
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R_BRACK@[235; 236)
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@ -1,5 +1,6 @@
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Fixmes:
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Lexer:
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* Fix `is_whitespace`, add more tests
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* Add more thorough tests for idents for XID_Start & XID_Continue
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* Validate that float and integer literals use digits only of the appropriate
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@ -7,3 +8,7 @@ Fixmes:
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* Validation for unclosed char literal
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* Strings are completely wrong: more tests and comparison with libsyntax.
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* Comment lexing is completely wrong
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Parser:
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* Figure out what is the expected state of attribute grammar.
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Token trees or something more structured? Token trees would be unfortunate: no extend selection =/
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