diff options
Diffstat (limited to 'src/parser')
-rw-r--r-- | src/parser/event_parser/grammar.rs | 38 | ||||
-rw-r--r-- | src/parser/event_parser/mod.rs | 3 | ||||
-rw-r--r-- | src/parser/event_parser/parser.rs | 27 |
3 files changed, 61 insertions, 7 deletions
diff --git a/src/parser/event_parser/grammar.rs b/src/parser/event_parser/grammar.rs index be61483ec..77596fea6 100644 --- a/src/parser/event_parser/grammar.rs +++ b/src/parser/event_parser/grammar.rs | |||
@@ -1,4 +1,3 @@ | |||
1 | use super::Event; | ||
2 | use super::parser::Parser; | 1 | use super::parser::Parser; |
3 | 2 | ||
4 | use syntax_kinds::*; | 3 | use syntax_kinds::*; |
@@ -50,10 +49,26 @@ fn item(p: &mut Parser) -> Result { | |||
50 | ERR | 49 | ERR |
51 | } | 50 | } |
52 | 51 | ||
53 | fn struct_item(p: &mut Parser) -> Result{ | 52 | fn struct_item(p: &mut Parser) -> Result { |
54 | p.expect(IDENT)?; | 53 | p.expect(IDENT)?; |
55 | p.expect(L_CURLY)?; | 54 | p.curly_block(|p| { |
56 | p.expect(R_CURLY) | 55 | comma_list(p, struct_field) |
56 | }) | ||
57 | } | ||
58 | |||
59 | fn struct_field(p: &mut Parser) -> Result { | ||
60 | if !p.current_is(IDENT) { | ||
61 | return ERR; | ||
62 | } | ||
63 | p.start(STRUCT_FIELD); | ||
64 | p.bump(); | ||
65 | ignore_errors(|| { | ||
66 | p.expect(COLON)?; | ||
67 | p.expect(IDENT)?; | ||
68 | OK | ||
69 | }); | ||
70 | p.finish(); | ||
71 | OK | ||
57 | } | 72 | } |
58 | 73 | ||
59 | // Paths, types, attributes, and stuff // | 74 | // Paths, types, attributes, and stuff // |
@@ -78,4 +93,19 @@ fn skip_one_token(p: &mut Parser) { | |||
78 | p.start(ERROR); | 93 | p.start(ERROR); |
79 | p.bump().unwrap(); | 94 | p.bump().unwrap(); |
80 | p.finish(); | 95 | p.finish(); |
96 | } | ||
97 | |||
98 | fn ignore_errors<F: FnOnce() -> Result>(f: F) { | ||
99 | drop(f()); | ||
100 | } | ||
101 | |||
102 | fn comma_list<F: Fn(&mut Parser) -> Result>(p: &mut Parser, element: F) { | ||
103 | loop { | ||
104 | if element(p).is_err() { | ||
105 | return | ||
106 | } | ||
107 | if p.expect(COMMA).is_err() { | ||
108 | return | ||
109 | } | ||
110 | } | ||
81 | } \ No newline at end of file | 111 | } \ No newline at end of file |
diff --git a/src/parser/event_parser/mod.rs b/src/parser/event_parser/mod.rs index 1228236a9..3c3654b6b 100644 --- a/src/parser/event_parser/mod.rs +++ b/src/parser/event_parser/mod.rs | |||
@@ -1,6 +1,5 @@ | |||
1 | use {Token, TextUnit, SyntaxKind}; | 1 | use {Token, SyntaxKind}; |
2 | 2 | ||
3 | use syntax_kinds::*; | ||
4 | mod grammar; | 3 | mod grammar; |
5 | mod parser; | 4 | mod parser; |
6 | 5 | ||
diff --git a/src/parser/event_parser/parser.rs b/src/parser/event_parser/parser.rs index 36452ef67..04ef4fb28 100644 --- a/src/parser/event_parser/parser.rs +++ b/src/parser/event_parser/parser.rs | |||
@@ -1,7 +1,7 @@ | |||
1 | use {Token, SyntaxKind, TextUnit}; | 1 | use {Token, SyntaxKind, TextUnit}; |
2 | use super::{Event}; | 2 | use super::{Event}; |
3 | use super::super::is_insignificant; | 3 | use super::super::is_insignificant; |
4 | use syntax_kinds::{WHITESPACE, COMMENT}; | 4 | use syntax_kinds::{L_CURLY, R_CURLY, ERROR}; |
5 | 5 | ||
6 | pub struct Parser<'t> { | 6 | pub struct Parser<'t> { |
7 | text: &'t str, | 7 | text: &'t str, |
@@ -10,6 +10,7 @@ pub struct Parser<'t> { | |||
10 | 10 | ||
11 | pos: usize, | 11 | pos: usize, |
12 | events: Vec<Event>, | 12 | events: Vec<Event>, |
13 | curly_level: i32, | ||
13 | } | 14 | } |
14 | 15 | ||
15 | impl<'t> Parser<'t> { | 16 | impl<'t> Parser<'t> { |
@@ -30,6 +31,7 @@ impl<'t> Parser<'t> { | |||
30 | 31 | ||
31 | pos: 0, | 32 | pos: 0, |
32 | events: Vec::new(), | 33 | events: Vec::new(), |
34 | curly_level: 0, | ||
33 | } | 35 | } |
34 | } | 36 | } |
35 | 37 | ||
@@ -64,6 +66,11 @@ impl<'t> Parser<'t> { | |||
64 | 66 | ||
65 | pub(crate) fn bump(&mut self) -> Option<SyntaxKind> { | 67 | pub(crate) fn bump(&mut self) -> Option<SyntaxKind> { |
66 | let kind = self.current()?; | 68 | let kind = self.current()?; |
69 | match kind { | ||
70 | L_CURLY => self.curly_level += 1, | ||
71 | R_CURLY => self.curly_level -= 1, | ||
72 | _ => (), | ||
73 | } | ||
67 | self.pos += 1; | 74 | self.pos += 1; |
68 | self.event(Event::Token { kind, n_raw_tokens: 1 }); | 75 | self.event(Event::Token { kind, n_raw_tokens: 1 }); |
69 | Some(kind) | 76 | Some(kind) |
@@ -78,6 +85,24 @@ impl<'t> Parser<'t> { | |||
78 | } | 85 | } |
79 | } | 86 | } |
80 | 87 | ||
88 | pub(crate) fn curly_block<F: FnOnce(&mut Parser)>(&mut self, f: F) -> Result<(), ()> { | ||
89 | let level = self.curly_level; | ||
90 | self.expect(L_CURLY)?; | ||
91 | f(self); | ||
92 | assert!(self.curly_level > level); | ||
93 | if self.expect(R_CURLY).is_ok() { | ||
94 | return Ok(()); | ||
95 | } | ||
96 | self.start(ERROR); | ||
97 | while self.curly_level > level { | ||
98 | if self.bump().is_none() { | ||
99 | break; | ||
100 | } | ||
101 | } | ||
102 | self.finish(); | ||
103 | Ok(()) //??? | ||
104 | } | ||
105 | |||
81 | fn event(&mut self, event: Event) { | 106 | fn event(&mut self, event: Event) { |
82 | self.events.push(event) | 107 | self.events.push(event) |
83 | } | 108 | } |