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authorJeremy A. Kolb <[email protected]>2018-10-15 22:44:23 +0100
committerJeremy A. Kolb <[email protected]>2018-10-16 14:41:10 +0100
commit61f3a438d3a729a6be941bca1ff4c6a97a33f221 (patch)
tree6551967cc8c6e921b66071453ad7888a9121d326 /crates/ra_syntax/src/grammar/expressions
parent39cb6c6d3f78b193f5873c3492e530bbd24d5dd2 (diff)
Cargo Format
Run `cargo fmt` and ignore generated files
Diffstat (limited to 'crates/ra_syntax/src/grammar/expressions')
-rw-r--r--crates/ra_syntax/src/grammar/expressions/atom.rs58
-rw-r--r--crates/ra_syntax/src/grammar/expressions/mod.rs53
2 files changed, 74 insertions, 37 deletions
diff --git a/crates/ra_syntax/src/grammar/expressions/atom.rs b/crates/ra_syntax/src/grammar/expressions/atom.rs
index e21de68c5..11f766d33 100644
--- a/crates/ra_syntax/src/grammar/expressions/atom.rs
+++ b/crates/ra_syntax/src/grammar/expressions/atom.rs
@@ -13,9 +13,18 @@ use super::*;
13// let _ = b"e"; 13// let _ = b"e";
14// let _ = br"f"; 14// let _ = br"f";
15// } 15// }
16pub(crate) const LITERAL_FIRST: TokenSet = 16pub(crate) const LITERAL_FIRST: TokenSet = token_set![
17 token_set![TRUE_KW, FALSE_KW, INT_NUMBER, FLOAT_NUMBER, BYTE, CHAR, 17 TRUE_KW,
18 STRING, RAW_STRING, BYTE_STRING, RAW_BYTE_STRING]; 18 FALSE_KW,
19 INT_NUMBER,
20 FLOAT_NUMBER,
21 BYTE,
22 CHAR,
23 STRING,
24 RAW_STRING,
25 BYTE_STRING,
26 RAW_BYTE_STRING
27];
19 28
20pub(crate) fn literal(p: &mut Parser) -> Option<CompletedMarker> { 29pub(crate) fn literal(p: &mut Parser) -> Option<CompletedMarker> {
21 if !p.at_ts(LITERAL_FIRST) { 30 if !p.at_ts(LITERAL_FIRST) {
@@ -26,15 +35,31 @@ pub(crate) fn literal(p: &mut Parser) -> Option<CompletedMarker> {
26 Some(m.complete(p, LITERAL)) 35 Some(m.complete(p, LITERAL))
27} 36}
28 37
29pub(super) const ATOM_EXPR_FIRST: TokenSet = 38pub(super) const ATOM_EXPR_FIRST: TokenSet = token_set_union![
30 token_set_union![ 39 LITERAL_FIRST,
31 LITERAL_FIRST, 40 token_set![
32 token_set![L_CURLY, L_PAREN, L_BRACK, PIPE, MOVE_KW, IF_KW, WHILE_KW, MATCH_KW, UNSAFE_KW, 41 L_CURLY,
33 RETURN_KW, IDENT, SELF_KW, SUPER_KW, CRATE_KW, COLONCOLON, BREAK_KW, CONTINUE_KW, LIFETIME ], 42 L_PAREN,
34 ]; 43 L_BRACK,
44 PIPE,
45 MOVE_KW,
46 IF_KW,
47 WHILE_KW,
48 MATCH_KW,
49 UNSAFE_KW,
50 RETURN_KW,
51 IDENT,
52 SELF_KW,
53 SUPER_KW,
54 CRATE_KW,
55 COLONCOLON,
56 BREAK_KW,
57 CONTINUE_KW,
58 LIFETIME
59 ],
60];
35 61
36const EXPR_RECOVERY_SET: TokenSet = 62const EXPR_RECOVERY_SET: TokenSet = token_set![LET_KW];
37 token_set![LET_KW];
38 63
39pub(super) fn atom_expr(p: &mut Parser, r: Restrictions) -> Option<CompletedMarker> { 64pub(super) fn atom_expr(p: &mut Parser, r: Restrictions) -> Option<CompletedMarker> {
40 match literal(p) { 65 match literal(p) {
@@ -80,7 +105,7 @@ pub(super) fn atom_expr(p: &mut Parser, r: Restrictions) -> Option<CompletedMark
80 let m = p.start(); 105 let m = p.start();
81 p.bump(); 106 p.bump();
82 block_expr(p, Some(m)) 107 block_expr(p, Some(m))
83 }, 108 }
84 L_CURLY => block_expr(p, None), 109 L_CURLY => block_expr(p, None),
85 RETURN_KW => return_expr(p), 110 RETURN_KW => return_expr(p),
86 CONTINUE_KW => continue_expr(p), 111 CONTINUE_KW => continue_expr(p),
@@ -119,7 +144,14 @@ fn tuple_expr(p: &mut Parser) -> CompletedMarker {
119 } 144 }
120 } 145 }
121 p.expect(R_PAREN); 146 p.expect(R_PAREN);
122 m.complete(p, if saw_expr && !saw_comma { PAREN_EXPR } else { TUPLE_EXPR }) 147 m.complete(
148 p,
149 if saw_expr && !saw_comma {
150 PAREN_EXPR
151 } else {
152 TUPLE_EXPR
153 },
154 )
123} 155}
124 156
125// test array_expr 157// test array_expr
diff --git a/crates/ra_syntax/src/grammar/expressions/mod.rs b/crates/ra_syntax/src/grammar/expressions/mod.rs
index 20e0fa328..60c8602f9 100644
--- a/crates/ra_syntax/src/grammar/expressions/mod.rs
+++ b/crates/ra_syntax/src/grammar/expressions/mod.rs
@@ -1,23 +1,32 @@
1mod atom; 1mod atom;
2 2
3use super::*;
4pub(super) use self::atom::{literal, LITERAL_FIRST};
5pub(crate) use self::atom::match_arm_list; 3pub(crate) use self::atom::match_arm_list;
4pub(super) use self::atom::{literal, LITERAL_FIRST};
5use super::*;
6 6
7const EXPR_FIRST: TokenSet = LHS_FIRST; 7const EXPR_FIRST: TokenSet = LHS_FIRST;
8 8
9pub(super) fn expr(p: &mut Parser) -> BlockLike { 9pub(super) fn expr(p: &mut Parser) -> BlockLike {
10 let r = Restrictions { forbid_structs: false, prefer_stmt: false }; 10 let r = Restrictions {
11 forbid_structs: false,
12 prefer_stmt: false,
13 };
11 expr_bp(p, r, 1) 14 expr_bp(p, r, 1)
12} 15}
13 16
14pub(super) fn expr_stmt(p: &mut Parser) -> BlockLike { 17pub(super) fn expr_stmt(p: &mut Parser) -> BlockLike {
15 let r = Restrictions { forbid_structs: false, prefer_stmt: true }; 18 let r = Restrictions {
19 forbid_structs: false,
20 prefer_stmt: true,
21 };
16 expr_bp(p, r, 1) 22 expr_bp(p, r, 1)
17} 23}
18 24
19fn expr_no_struct(p: &mut Parser) { 25fn expr_no_struct(p: &mut Parser) {
20 let r = Restrictions { forbid_structs: true, prefer_stmt: false }; 26 let r = Restrictions {
27 forbid_structs: true,
28 prefer_stmt: false,
29 };
21 expr_bp(p, r, 1); 30 expr_bp(p, r, 1);
22} 31}
23 32
@@ -107,10 +116,8 @@ enum Op {
107fn current_op(p: &Parser) -> (u8, Op) { 116fn current_op(p: &Parser) -> (u8, Op) {
108 if let Some(t) = p.next3() { 117 if let Some(t) = p.next3() {
109 match t { 118 match t {
110 (L_ANGLE, L_ANGLE, EQ) => 119 (L_ANGLE, L_ANGLE, EQ) => return (1, Op::Composite(SHLEQ, 3)),
111 return (1, Op::Composite(SHLEQ, 3)), 120 (R_ANGLE, R_ANGLE, EQ) => return (1, Op::Composite(SHREQ, 3)),
112 (R_ANGLE, R_ANGLE, EQ) =>
113 return (1, Op::Composite(SHREQ, 3)),
114 _ => (), 121 _ => (),
115 } 122 }
116 } 123 }
@@ -201,11 +208,10 @@ fn is_block(kind: SyntaxKind) -> bool {
201 } 208 }
202} 209}
203 210
204const LHS_FIRST: TokenSet = 211const LHS_FIRST: TokenSet = token_set_union![
205 token_set_union![ 212 token_set![AMP, STAR, EXCL, DOTDOT, MINUS],
206 token_set![AMP, STAR, EXCL, DOTDOT, MINUS], 213 atom::ATOM_EXPR_FIRST,
207 atom::ATOM_EXPR_FIRST, 214];
208 ];
209 215
210fn lhs(p: &mut Parser, r: Restrictions) -> Option<CompletedMarker> { 216fn lhs(p: &mut Parser, r: Restrictions) -> Option<CompletedMarker> {
211 let m; 217 let m;
@@ -265,11 +271,13 @@ fn postfix_expr(p: &mut Parser, r: Restrictions, mut lhs: CompletedMarker) -> Co
265 // } 271 // }
266 L_PAREN if allow_calls => call_expr(p, lhs), 272 L_PAREN if allow_calls => call_expr(p, lhs),
267 L_BRACK if allow_calls => index_expr(p, lhs), 273 L_BRACK if allow_calls => index_expr(p, lhs),
268 DOT if p.nth(1) == IDENT => if p.nth(2) == L_PAREN || p.nth(2) == COLONCOLON { 274 DOT if p.nth(1) == IDENT => {
269 method_call_expr(p, lhs) 275 if p.nth(2) == L_PAREN || p.nth(2) == COLONCOLON {
270 } else { 276 method_call_expr(p, lhs)
271 field_expr(p, lhs) 277 } else {
272 }, 278 field_expr(p, lhs)
279 }
280 }
273 DOT if p.nth(1) == INT_NUMBER => field_expr(p, lhs), 281 DOT if p.nth(1) == INT_NUMBER => field_expr(p, lhs),
274 // test postfix_range 282 // test postfix_range
275 // fn foo() { let x = 1..; } 283 // fn foo() { let x = 1..; }
@@ -318,10 +326,7 @@ fn index_expr(p: &mut Parser, lhs: CompletedMarker) -> CompletedMarker {
318// y.bar::<T>(1, 2,); 326// y.bar::<T>(1, 2,);
319// } 327// }
320fn method_call_expr(p: &mut Parser, lhs: CompletedMarker) -> CompletedMarker { 328fn method_call_expr(p: &mut Parser, lhs: CompletedMarker) -> CompletedMarker {
321 assert!( 329 assert!(p.at(DOT) && p.nth(1) == IDENT && (p.nth(2) == L_PAREN || p.nth(2) == COLONCOLON));
322 p.at(DOT) && p.nth(1) == IDENT
323 && (p.nth(2) == L_PAREN || p.nth(2) == COLONCOLON)
324 );
325 let m = lhs.precede(p); 330 let m = lhs.precede(p);
326 p.bump(); 331 p.bump();
327 name_ref(p); 332 name_ref(p);
@@ -410,7 +415,7 @@ fn path_expr(p: &mut Parser, r: Restrictions) -> CompletedMarker {
410 items::macro_call_after_excl(p); 415 items::macro_call_after_excl(p);
411 m.complete(p, MACRO_CALL) 416 m.complete(p, MACRO_CALL)
412 } 417 }
413 _ => m.complete(p, PATH_EXPR) 418 _ => m.complete(p, PATH_EXPR),
414 } 419 }
415} 420}
416 421