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-rw-r--r--xtask/src/ast_src.rs22
-rw-r--r--xtask/src/codegen/gen_syntax.rs87
-rw-r--r--xtask/src/codegen/rust.ungram621
-rw-r--r--xtask/src/metrics.rs132
4 files changed, 414 insertions, 448 deletions
diff --git a/xtask/src/ast_src.rs b/xtask/src/ast_src.rs
index 114898e38..adc191254 100644
--- a/xtask/src/ast_src.rs
+++ b/xtask/src/ast_src.rs
@@ -113,12 +113,12 @@ pub(crate) const KINDS_SRC: KindsSrc = KindsSrc {
113 "TUPLE_TYPE", 113 "TUPLE_TYPE",
114 "NEVER_TYPE", 114 "NEVER_TYPE",
115 "PATH_TYPE", 115 "PATH_TYPE",
116 "POINTER_TYPE", 116 "PTR_TYPE",
117 "ARRAY_TYPE", 117 "ARRAY_TYPE",
118 "SLICE_TYPE", 118 "SLICE_TYPE",
119 "REFERENCE_TYPE", 119 "REF_TYPE",
120 "PLACEHOLDER_TYPE", 120 "INFER_TYPE",
121 "FN_POINTER_TYPE", 121 "FN_PTR_TYPE",
122 "FOR_TYPE", 122 "FOR_TYPE",
123 "IMPL_TRAIT_TYPE", 123 "IMPL_TRAIT_TYPE",
124 "DYN_TRAIT_TYPE", 124 "DYN_TRAIT_TYPE",
@@ -126,13 +126,13 @@ pub(crate) const KINDS_SRC: KindsSrc = KindsSrc {
126 "PAREN_PAT", 126 "PAREN_PAT",
127 "REF_PAT", 127 "REF_PAT",
128 "BOX_PAT", 128 "BOX_PAT",
129 "BIND_PAT", 129 "IDENT_PAT",
130 "PLACEHOLDER_PAT", 130 "WILDCARD_PAT",
131 "DOT_DOT_PAT", 131 "REST_PAT",
132 "PATH_PAT", 132 "PATH_PAT",
133 "RECORD_PAT", 133 "RECORD_PAT",
134 "RECORD_FIELD_PAT_LIST", 134 "RECORD_PAT_FIELD_LIST",
135 "RECORD_FIELD_PAT", 135 "RECORD_PAT_FIELD",
136 "TUPLE_STRUCT_PAT", 136 "TUPLE_STRUCT_PAT",
137 "TUPLE_PAT", 137 "TUPLE_PAT",
138 "SLICE_PAT", 138 "SLICE_PAT",
@@ -144,7 +144,7 @@ pub(crate) const KINDS_SRC: KindsSrc = KindsSrc {
144 "ARRAY_EXPR", 144 "ARRAY_EXPR",
145 "PAREN_EXPR", 145 "PAREN_EXPR",
146 "PATH_EXPR", 146 "PATH_EXPR",
147 "LAMBDA_EXPR", 147 "CLOSURE_EXPR",
148 "IF_EXPR", 148 "IF_EXPR",
149 "WHILE_EXPR", 149 "WHILE_EXPR",
150 "CONDITION", 150 "CONDITION",
@@ -208,7 +208,7 @@ pub(crate) const KINDS_SRC: KindsSrc = KindsSrc {
208 "LIFETIME_PARAM", 208 "LIFETIME_PARAM",
209 "TYPE_PARAM", 209 "TYPE_PARAM",
210 "CONST_PARAM", 210 "CONST_PARAM",
211 "TYPE_ARG_LIST", 211 "GENERIC_ARG_LIST",
212 "LIFETIME_ARG", 212 "LIFETIME_ARG",
213 "TYPE_ARG", 213 "TYPE_ARG",
214 "ASSOC_TYPE_ARG", 214 "ASSOC_TYPE_ARG",
diff --git a/xtask/src/codegen/gen_syntax.rs b/xtask/src/codegen/gen_syntax.rs
index 45b788bdb..cafad8070 100644
--- a/xtask/src/codegen/gen_syntax.rs
+++ b/xtask/src/codegen/gen_syntax.rs
@@ -10,7 +10,7 @@ use std::{
10 10
11use proc_macro2::{Punct, Spacing}; 11use proc_macro2::{Punct, Spacing};
12use quote::{format_ident, quote}; 12use quote::{format_ident, quote};
13use ungrammar::{Grammar, Rule}; 13use ungrammar::{rust_grammar, Grammar, Rule};
14 14
15use crate::{ 15use crate::{
16 ast_src::{AstEnumSrc, AstNodeSrc, AstSrc, Cardinality, Field, KindsSrc, KINDS_SRC}, 16 ast_src::{AstEnumSrc, AstNodeSrc, AstSrc, Cardinality, Field, KindsSrc, KINDS_SRC},
@@ -19,9 +19,7 @@ use crate::{
19}; 19};
20 20
21pub fn generate_syntax(mode: Mode) -> Result<()> { 21pub fn generate_syntax(mode: Mode) -> Result<()> {
22 let grammar = include_str!("rust.ungram") 22 let grammar = rust_grammar();
23 .parse::<Grammar>()
24 .unwrap_or_else(|err| panic!("\n \x1b[91merror\x1b[0m: {}\n", err));
25 let ast = lower(&grammar); 23 let ast = lower(&grammar);
26 24
27 let syntax_kinds_file = project_root().join(codegen::SYNTAX_KINDS); 25 let syntax_kinds_file = project_root().join(codegen::SYNTAX_KINDS);
@@ -153,25 +151,10 @@ fn generate_nodes(kinds: KindsSrc<'_>, grammar: &AstSrc) -> Result<String> {
153 quote!(impl ast::#trait_name for #name {}) 151 quote!(impl ast::#trait_name for #name {})
154 }); 152 });
155 153
156 ( 154 let ast_node = if en.name == "Stmt" {
155 quote! {}
156 } else {
157 quote! { 157 quote! {
158 #[pretty_doc_comment_placeholder_workaround]
159 #[derive(Debug, Clone, PartialEq, Eq, Hash)]
160 pub enum #name {
161 #(#variants(#variants),)*
162 }
163
164 #(#traits)*
165 },
166 quote! {
167 #(
168 impl From<#variants> for #name {
169 fn from(node: #variants) -> #name {
170 #name::#variants(node)
171 }
172 }
173 )*
174
175 impl AstNode for #name { 158 impl AstNode for #name {
176 fn can_cast(kind: SyntaxKind) -> bool { 159 fn can_cast(kind: SyntaxKind) -> bool {
177 match kind { 160 match kind {
@@ -196,6 +179,28 @@ fn generate_nodes(kinds: KindsSrc<'_>, grammar: &AstSrc) -> Result<String> {
196 } 179 }
197 } 180 }
198 } 181 }
182 }
183 };
184
185 (
186 quote! {
187 #[pretty_doc_comment_placeholder_workaround]
188 #[derive(Debug, Clone, PartialEq, Eq, Hash)]
189 pub enum #name {
190 #(#variants(#variants),)*
191 }
192
193 #(#traits)*
194 },
195 quote! {
196 #(
197 impl From<#variants> for #name {
198 fn from(node: #variants) -> #name {
199 #name::#variants(node)
200 }
201 }
202 )*
203 #ast_node
199 }, 204 },
200 ) 205 )
201 }) 206 })
@@ -476,7 +481,13 @@ impl Field {
476 }; 481 };
477 format_ident!("{}_token", name) 482 format_ident!("{}_token", name)
478 } 483 }
479 Field::Node { name, .. } => format_ident!("{}", name), 484 Field::Node { name, .. } => {
485 if name == "type" {
486 format_ident!("ty")
487 } else {
488 format_ident!("{}", name)
489 }
490 }
480 } 491 }
481 } 492 }
482 fn ty(&self) -> proc_macro2::Ident { 493 fn ty(&self) -> proc_macro2::Ident {
@@ -491,13 +502,7 @@ fn lower(grammar: &Grammar) -> AstSrc {
491 let mut res = AstSrc::default(); 502 let mut res = AstSrc::default();
492 res.tokens = vec!["Whitespace".into(), "Comment".into(), "String".into(), "RawString".into()]; 503 res.tokens = vec!["Whitespace".into(), "Comment".into(), "String".into(), "RawString".into()];
493 504
494 let nodes = grammar 505 let nodes = grammar.iter().collect::<Vec<_>>();
495 .iter()
496 .filter(|&node| match grammar[node].rule {
497 Rule::Node(it) if it == node => false,
498 _ => true,
499 })
500 .collect::<Vec<_>>();
501 506
502 for &node in &nodes { 507 for &node in &nodes {
503 let name = grammar[node].name.clone(); 508 let name = grammar[node].name.clone();
@@ -531,6 +536,7 @@ fn lower_enum(grammar: &Grammar, rule: &Rule) -> Option<Vec<String>> {
531 for alternative in alternatives { 536 for alternative in alternatives {
532 match alternative { 537 match alternative {
533 Rule::Node(it) => variants.push(grammar[*it].name.clone()), 538 Rule::Node(it) => variants.push(grammar[*it].name.clone()),
539 Rule::Token(it) if grammar[*it].name == ";" => (),
534 _ => return None, 540 _ => return None,
535 } 541 }
536 } 542 }
@@ -572,6 +578,24 @@ fn lower_rule(acc: &mut Vec<Field>, grammar: &Grammar, label: Option<&String>, r
572 } 578 }
573 Rule::Labeled { label: l, rule } => { 579 Rule::Labeled { label: l, rule } => {
574 assert!(label.is_none()); 580 assert!(label.is_none());
581 let manually_implemented = matches!(
582 l.as_str(),
583 "lhs"
584 | "rhs"
585 | "then_branch"
586 | "else_branch"
587 | "start"
588 | "end"
589 | "op"
590 | "index"
591 | "base"
592 | "value"
593 | "trait"
594 | "self_ty"
595 );
596 if manually_implemented {
597 return;
598 }
575 lower_rule(acc, grammar, Some(l), rule); 599 lower_rule(acc, grammar, Some(l), rule);
576 } 600 }
577 Rule::Seq(rules) | Rule::Alt(rules) => { 601 Rule::Seq(rules) | Rule::Alt(rules) => {
@@ -687,6 +711,9 @@ fn extract_struct_trait(node: &mut AstNodeSrc, trait_name: &str, methods: &[&str
687 711
688fn extract_enum_traits(ast: &mut AstSrc) { 712fn extract_enum_traits(ast: &mut AstSrc) {
689 for enm in &mut ast.enums { 713 for enm in &mut ast.enums {
714 if enm.name == "Stmt" {
715 continue;
716 }
690 let nodes = &ast.nodes; 717 let nodes = &ast.nodes;
691 let mut variant_traits = enm 718 let mut variant_traits = enm
692 .variants 719 .variants
diff --git a/xtask/src/codegen/rust.ungram b/xtask/src/codegen/rust.ungram
index 375df301f..aca23890c 100644
--- a/xtask/src/codegen/rust.ungram
+++ b/xtask/src/codegen/rust.ungram
@@ -1,3 +1,63 @@
1//*************************//
2// Names, Paths and Macros //
3//*************************//
4
5Name =
6 'ident'
7
8NameRef =
9 'ident' | 'int_number'
10
11Path =
12 (qualifier:Path '::')? segment:PathSegment
13
14PathSegment =
15 'crate' | 'self' | 'super'
16| '::' NameRef
17| NameRef GenericArgList?
18| NameRef ParamList RetType?
19| '<' PathType ('as' PathType)? '>'
20
21GenericArgList =
22 '::'? '<' (GenericArg (',' GenericArg)* ','?)? '>'
23
24GenericArg =
25 TypeArg
26| AssocTypeArg
27| LifetimeArg
28| ConstArg
29
30TypeArg =
31 Type
32
33AssocTypeArg =
34 NameRef (':' TypeBoundList | '=' Type)
35
36LifetimeArg =
37 'lifetime'
38
39ConstArg =
40 Expr
41
42MacroCall =
43 Attr* Path '!' Name? TokenTree ';'?
44
45TokenTree =
46 '(' ')'
47| '{' '}'
48| '[' ']'
49
50MacroItems =
51 Item*
52
53MacroStmts =
54 statements:Stmt*
55 Expr?
56
57//*************************//
58// Items //
59//*************************//
60
1SourceFile = 61SourceFile =
2 'shebang'? 62 'shebang'?
3 Attr* 63 Attr*
@@ -61,22 +121,22 @@ ParamList =
61SelfParam = 121SelfParam =
62 Attr* ( 122 Attr* (
63 ('&' 'lifetime'?)? 'mut'? 'self' 123 ('&' 'lifetime'?)? 'mut'? 'self'
64 | 'mut'? 'self' ':' ty:TypeRef 124 | 'mut'? 'self' ':' Type
65 ) 125 )
66 126
67Param = 127Param =
68 Attr* ( 128 Attr* (
69 Pat (':' ty:TypeRef) 129 Pat (':' Type)
70 | ty:TypeRef 130 | Type
71 | '...' 131 | '...'
72 ) 132 )
73 133
74RetType = 134RetType =
75 '->' ty:TypeRef 135 '->' Type
76 136
77TypeAlias = 137TypeAlias =
78 Attr* Visibility? 'default'? 'type' Name GenericParamList? (':' TypeBoundList?)? WhereClause? 138 Attr* Visibility? 'default'? 'type' Name GenericParamList? (':' TypeBoundList?)? WhereClause?
79 '=' ty:TypeRef ';' 139 '=' Type ';'
80 140
81Struct = 141Struct =
82 Attr* Visibility? 'struct' Name GenericParamList? ( 142 Attr* Visibility? 'struct' Name GenericParamList? (
@@ -88,13 +148,13 @@ RecordFieldList =
88 '{' fields:(RecordField (',' RecordField)* ','?)? '}' 148 '{' fields:(RecordField (',' RecordField)* ','?)? '}'
89 149
90RecordField = 150RecordField =
91 Attr* Visibility? Name ':' ty:TypeRef 151 Attr* Visibility? Name ':' Type
92 152
93TupleFieldList = 153TupleFieldList =
94 '(' fields:(TupleField (',' TupleField)* ','?)? ')' 154 '(' fields:(TupleField (',' TupleField)* ','?)? ')'
95 155
96TupleField = 156TupleField =
97 Attr* Visibility? ty:TypeRef 157 Attr* Visibility? Type
98 158
99FieldList = 159FieldList =
100 RecordFieldList 160 RecordFieldList
@@ -114,12 +174,17 @@ Union =
114 Attr* Visibility? 'union' Name GenericParamList? WhereClause? 174 Attr* Visibility? 'union' Name GenericParamList? WhereClause?
115 RecordFieldList 175 RecordFieldList
116 176
177AdtDef =
178 Enum
179| Struct
180| Union
181
117Const = 182Const =
118 Attr* Visibility? 'default'? 'const' (Name | '_') ':' ty:TypeRef 183 Attr* Visibility? 'default'? 'const' (Name | '_') ':' Type
119 '=' body:Expr ';' 184 '=' body:Expr ';'
120 185
121Static = 186Static =
122 Attr* Visibility? 'static'? 'mut'? Name ':' ty:TypeRef 187 Attr* Visibility? 'static'? 'mut'? Name ':' Type
123 '=' body:Expr ';' 188 '=' body:Expr ';'
124 189
125Trait = 190Trait =
@@ -131,18 +196,17 @@ AssocItemList =
131 '{' Attr* AssocItem* '}' 196 '{' Attr* AssocItem* '}'
132 197
133AssocItem = 198AssocItem =
134 Fn 199 Const
135| TypeAlias 200| Fn
136| Const
137| MacroCall 201| MacroCall
202| TypeAlias
138 203
139Impl = 204Impl =
140 Attr* Visibility? 205 Attr* Visibility?
141 'default'? 'unsafe'? 'impl' 'const'? GenericParamList? ( 206 'default'? 'unsafe'? 'impl' 'const'? GenericParamList?
142 TypeRef 207 ('!'? target_trait:Type 'for')? target_type:Type
143 | '!'? TypeRef 'for' TypeRef 208 WhereClause?
144 ) WhereClause? 209 AssocItemList
145 AssocItemList
146 210
147ExternBlock = 211ExternBlock =
148 Attr* Abi ExternItemList 212 Attr* Abi ExternItemList
@@ -157,20 +221,26 @@ GenericParamList =
157 '<' (GenericParam (',' GenericParam)* ','?)? '>' 221 '<' (GenericParam (',' GenericParam)* ','?)? '>'
158 222
159GenericParam = 223GenericParam =
160 LifetimeParam 224 ConstParam
225| LifetimeParam
161| TypeParam 226| TypeParam
162| ConstParam
163 227
164TypeParam = 228TypeParam =
165 Attr* Name (':' TypeBoundList?)? 229 Attr* Name (':' TypeBoundList?)?
166 ('=' default_type:TypeRef)? 230 ('=' default_type:Type)?
167 231
168ConstParam = 232ConstParam =
169 Attr* 'const' Name ':' ty:TypeRef 233 Attr* 'const' Name ':' Type
170 ('=' default_val:Expr)? 234 ('=' default_val:Expr)?
171 235
172LifetimeParam = 236LifetimeParam =
173 Attr* 'lifetime' 237 Attr* 'lifetime' (':' TypeBoundList?)?
238
239WhereClause =
240 'where' predicates:(WherePred (',' WherePred)* ','?)
241
242WherePred =
243 ('for' GenericParamList)? ('lifetime' | Type) ':' TypeBoundList
174 244
175Visibility = 245Visibility =
176 'pub' ('(' 246 'pub' ('('
@@ -183,362 +253,335 @@ Visibility =
183Attr = 253Attr =
184 '#' '!'? '[' Path ('=' Literal | TokenTree)? ']' 254 '#' '!'? '[' Path ('=' Literal | TokenTree)? ']'
185 255
186ParenType = 256//****************************//
187 '(' ty:TypeRef ')' 257// Statements and Expressions //
258//****************************//
188 259
189TupleType = 260Stmt =
190 '(' fields:TypeRef* ')' 261 ExprStmt
262| Item
263| LetStmt
191 264
192NeverType = 265LetStmt =
193 '!' 266 Attr* 'let' Pat (':' Type)?
267 '=' initializer:Expr ';'
194 268
195PathType = 269ExprStmt =
196 Path 270 Attr* Expr ';'?
197 271
198PointerType = 272Expr =
199 '*' ('const' | 'mut') ty:TypeRef 273 ArrayExpr
274| AwaitExpr
275| BinExpr
276| BlockExpr
277| BoxExpr
278| BreakExpr
279| CallExpr
280| CastExpr
281| ClosureExpr
282| ContinueExpr
283| EffectExpr
284| FieldExpr
285| ForExpr
286| IfExpr
287| IndexExpr
288| Literal
289| LoopExpr
290| MacroCall
291| MatchExpr
292| MethodCallExpr
293| ParenExpr
294| PathExpr
295| PrefixExpr
296| RangeExpr
297| RecordExpr
298| RefExpr
299| ReturnExpr
300| TryExpr
301| TupleExpr
302| WhileExpr
200 303
201ArrayType = 304Literal =
202 '[' ty:TypeRef ';' Expr ']' 305 Attr* value:(
306 'int_number' | 'float_number'
307 | 'string' | 'raw_string'
308 | 'byte_string' | 'raw_byte_string'
309 | 'true' | 'false'
310 | 'char' | 'byte'
311 )
203 312
204SliceType = 313PathExpr =
205 '[' ty:TypeRef ']' 314 Attr* Path
206 315
207ReferenceType = 316BlockExpr =
208 '&' 'lifetime'? 'mut'? ty:TypeRef 317 '{'
318 Attr*
319 statements:Stmt*
320 Expr?
321 '}'
209 322
210PlaceholderType = 323RefExpr =
211 '_' 324 Attr* '&' ('raw' |'mut' | 'const') Expr
212 325
213FnPointerType = 326TryExpr =
214 Abi 'unsafe'? 'fn' ParamList RetType? 327 Attr* Expr '?'
215 328
216ForType = 329EffectExpr =
217 'for' GenericParamList ty:TypeRef 330 Attr* Label? ('try' | 'unsafe' | 'async') BlockExpr
218 331
219ImplTraitType = 332PrefixExpr =
220 'impl' TypeBoundList 333 Attr* op:('-' | '!' | '*') Expr
221 334
222DynTraitType = 335BinExpr =
223 'dyn' TypeBoundList 336 Attr*
337 lhs:Expr
338 op:(
339 '||' | '&&'
340 | '==' | '!=' | '<=' | '>=' | '<' | '>'
341 | '+' | '*' | '-' | '/' | '%' | '<<' | '>>' | '^' | '|' | '&'
342 | '=' | '+=' | '/=' | '*=' | '%=' | '>>=' | '<<=' | '-=' | '|=' | '&=' | '^='
343 )
344 rhs:Expr
224 345
225TupleExpr = 346CastExpr =
226 Attr* '(' Expr* ')' 347 Attr* Expr 'as' Type
348
349ParenExpr =
350 Attr* '(' Attr* Expr ')'
227 351
228ArrayExpr = 352ArrayExpr =
229 Attr* '[' (Expr* | Expr ';' Expr) ']' 353 Attr* '[' Attr* (
354 (Expr (',' Expr)* ','?)?
355 | Expr ';' Expr
356 ) ']'
230 357
231ParenExpr = 358IndexExpr =
232 Attr* '(' Expr ')' 359 Attr* base:Expr '[' index:Expr ']'
233 360
234PathExpr = 361TupleExpr =
235 Path 362 Attr* '(' Attr* fields:(Expr (',' Expr)* ','?)? ')'
363
364RecordExpr =
365 Path RecordExprFieldList
366
367RecordExprFieldList =
368 '{'
369 Attr*
370 fields:(RecordExprField (',' RecordExprField)* ','?)
371 ('..' spread:Expr)?
372 '}'
373
374RecordExprField =
375 Attr* NameRef (':' Expr)?
376
377CallExpr =
378 Attr* Expr ArgList
379
380ArgList =
381 '(' args:(Expr (',' Expr)* ','?)? ')'
382
383MethodCallExpr =
384 Attr* Expr '.' NameRef GenericArgList? ArgList
385
386FieldExpr =
387 Attr* Expr '.' NameRef
236 388
237LambdaExpr = 389ClosureExpr =
238 Attr* 'static'? 'async'? 'move'? ParamList RetType? 390 Attr* 'static'? 'async'? 'move'? ParamList RetType?
239 body:Expr 391 body:Expr
240 392
241IfExpr = 393IfExpr =
242 Attr* 'if' Condition 394 Attr* 'if' Condition then_branch:BlockExpr
395 ('else' else_branch:(IfExpr | BlockExpr))?
243 396
244Condition = 397Condition =
245 'let' Pat '=' Expr 398 'let' Pat '=' Expr
246| Expr 399| Expr
247 400
248EffectExpr =
249 Attr* Label? ('try' | 'unsafe' | 'async') BlockExpr
250
251LoopExpr = 401LoopExpr =
252 Attr* Label? 'loop' 402 Attr* Label? 'loop'
253 loop_body:BlockExpr? 403 loop_body:BlockExpr
254 404
255ForExpr = 405ForExpr =
256 Attr* Label? 'for' Pat 'in' iterable:Expr 406 Attr* Label? 'for' Pat 'in' iterable:Expr
257 loop_body:BlockExpr? 407 loop_body:BlockExpr
258 408
259WhileExpr = 409WhileExpr =
260 Attr* Label? 'while' Condition 410 Attr* Label? 'while' Condition
261 loop_body:BlockExpr? 411 loop_body:BlockExpr
262 412
263ContinueExpr = 413Label =
264 Attr* 'continue' 'lifetime'? 414 'lifetime'
265 415
266BreakExpr = 416BreakExpr =
267 Attr* 'break' 'lifetime'? Expr? 417 Attr* 'break' 'lifetime'? Expr?
268 418
269Label = 419ContinueExpr =
270 'lifetime' 420 Attr* 'continue' 'lifetime'?
271
272BlockExpr =
273 Attr* Label
274 '{'
275 Item*
276 statements:Stmt*
277 Expr?
278 '}'
279 421
280ReturnExpr = 422RangeExpr =
281 Attr* 'return' Expr 423 Attr* start:Expr? op:('..' | '..=') end:Expr?
282 424
283CallExpr = 425MatchExpr =
284 Attr* Expr ArgList 426 Attr* 'match' Expr MatchArmList
285 427
286MethodCallExpr = 428MatchArmList =
287 Attr* Expr '.' NameRef TypeArgList? ArgList 429 '{'
430 Attr*
431 arms:MatchArm*
432 '}'
288 433
289ArgList = 434MatchArm =
290 '(' args:Expr* ')' 435 Attr* Pat guard:MatchGuard? '=>' Expr ','?
291 436
292FieldExpr = 437MatchGuard =
293 Attr* Expr '.' NameRef 438 'if' Expr
294 439
295IndexExpr = 440ReturnExpr =
296 Attr* '[' ']' 441 Attr* 'return' Expr?
297 442
298AwaitExpr = 443AwaitExpr =
299 Attr* Expr '.' 'await' 444 Attr* Expr '.' 'await'
300 445
301TryExpr =
302 Attr* Expr '?'
303
304CastExpr =
305 Attr* Expr 'as' ty:TypeRef
306
307RefExpr =
308 Attr* '&' ('raw' | 'mut' | 'const') Expr
309
310PrefixExpr =
311 Attr* Expr
312
313BoxExpr = 446BoxExpr =
314 Attr* 'box' Expr 447 Attr* 'box' Expr
315 448
316RangeExpr = 449//*************************//
317 Attr* 450// Types //
451//*************************//
318 452
319BinExpr = 453Type =
320 Attr* 454 ArrayType
321 455| DynTraitType
322Literal = 456| FnPointerType
323 'int_number' 457| ForType
458| ImplTraitType
459| InferType
460| NeverType
461| ParenType
462| PathType
463| PointerType
464| ReferenceType
465| SliceType
466| TupleType
324 467
325MatchExpr = 468ParenType =
326 Attr* 'match' Expr MatchArmList 469 '(' Type ')'
327 470
328MatchArmList = 471NeverType =
329 '{' arms:MatchArm* '}' 472 '!'
330 473
331MatchArm = 474PathType =
332 Attr* Pat guard:MatchGuard? '=>' Expr 475 Path
333 476
334MatchGuard = 477TupleType =
335 'if' Expr 478 '(' fields:(Type (',' Type)* ','?)? ')'
336 479
337RecordExpr = 480PointerType =
338 Path RecordExprFieldList 481 '*' ('const' | 'mut') Type
339 482
340RecordExprFieldList = 483ReferenceType =
341 '{' 484 '&' 'lifetime'? 'mut'? Type
342 fields:RecordExprField*
343 ('..' spread:Expr)?
344 '}'
345 485
346RecordExprField = 486ArrayType =
347 Attr* NameRef (':' Expr)? 487 '[' Type ';' Expr ']'
348 488
349OrPat = 489SliceType =
350 Pat* 490 '[' Type ']'
351 491
352ParenPat = 492InferType =
353 '(' Pat ')' 493 '_'
354 494
355RefPat = 495FnPointerType =
356 '&' 'mut'? Pat 496 'const'? 'async'? 'unsafe'? Abi? 'fn' ParamList RetType?
357 497
358BoxPat = 498ForType =
359 'box' Path 499 'for' GenericParamList Type
360 500
361BindPat = 501ImplTraitType =
362 Attr* 'ref'? 'mut'? Name ('@' Pat)? 502 'impl' TypeBoundList
363 503
364PlaceholderPat = 504DynTraitType =
365 '_' 505 'dyn' TypeBoundList
366 506
367DotDotPat = 507TypeBoundList =
368 '..' 508 bounds:(TypeBound ('+' TypeBound)* '+'?)
369 509
370PathPat = 510TypeBound =
371 Path 511 'lifetime'
512| '?'? Type
372 513
373SlicePat = 514//************************//
374 '[' args:Pat* ']' 515// Patterns //
516//************************//
375 517
376RangePat = 518Pat =
377 '..' | '..=' 519 IdentPat
520| BoxPat
521| RestPat
522| LiteralPat
523| MacroPat
524| OrPat
525| ParenPat
526| PathPat
527| WildcardPat
528| RangePat
529| RecordPat
530| RefPat
531| SlicePat
532| TuplePat
533| TupleStructPat
378 534
379LiteralPat = 535LiteralPat =
380 Literal 536 Literal
381 537
382MacroPat = 538IdentPat =
383 MacroCall 539 Attr* 'ref'? 'mut'? Name ('@' Pat)?
540
541WildcardPat =
542 '_'
543
544RangePat =
545 start:Pat op:('..' | '..=') end:Pat
546
547RefPat =
548 '&' 'mut'? Pat
384 549
385RecordPat = 550RecordPat =
386 Path RecordFieldPatList 551 Path RecordPatFieldList
387 552
388RecordFieldPatList = 553RecordPatFieldList =
389 '{' 554 '{'
390 record_field_pats:RecordFieldPat* 555 fields:(RecordPatField (',' RecordPatField)* ','?)
391 BindPat*
392 '..'? 556 '..'?
393 '}' 557 '}'
394 558
395RecordFieldPat = 559RecordPatField =
396 Attr* NameRef ':' Pat 560 Attr* (NameRef ':')? Pat
397 561
398TupleStructPat = 562TupleStructPat =
399 Path '(' args:Pat* ')' 563 Path '(' fields:(Pat (',' Pat)* ','?)? ')'
400 564
401TuplePat = 565TuplePat =
402 '(' args:Pat* ')' 566 '(' fields:(Pat (',' Pat)* ','?)? ')'
403
404Name =
405 'ident'
406
407NameRef =
408 'ident' | 'int_number'
409
410MacroCall =
411 Attr* Path '!' Name? TokenTree ';'?
412
413MacroDef =
414 Name TokenTree
415
416TokenTree =
417 '(' ')' | '{' '}' | '[' ']'
418
419MacroItems =
420 Item*
421
422MacroStmts =
423 statements:Stmt*
424 Expr?
425
426TypeBound =
427 'lifetime' | 'const'? TypeRef
428
429TypeBoundList =
430 bounds:TypeBound*
431
432WherePred =
433 ('for' GenericParamList)? ('lifetime' | TypeRef) ':' TypeBoundList
434
435WhereClause =
436 'where' predicates:WherePred*
437
438ExprStmt =
439 Attr* Expr ';'
440
441LetStmt =
442 Attr* 'let' Pat (':' ty:TypeRef)
443 '=' initializer:Expr ';'
444
445Path =
446 (qualifier:Path '::')? segment:PathSegment
447
448PathSegment =
449 '::' | 'crate' | 'self' | 'super'
450| '<' NameRef TypeArgList ParamList RetType PathType '>'
451
452TypeArgList =
453 '::'? '<'
454 TypeArg*
455 LifetimeArg*
456 AssocTypeArg*
457 ConstArg*
458 '>'
459 567
460TypeArg = 568ParenPat =
461 TypeRef 569 '(' Pat ')'
462
463AssocTypeArg =
464 NameRef (':' TypeBoundList | '=' TypeRef)
465
466LifetimeArg =
467 'lifetime'
468 570
469ConstArg = 571SlicePat =
470 Literal | BlockExpr BlockExpr 572 '[' (Pat (',' Pat)* ','?)? ']'
471 573
472AdtDef = 574PathPat =
473 Struct 575 Path
474| Enum
475| Union
476 576
477TypeRef = 577OrPat =
478 ParenType 578 (Pat ('|' Pat)* '|'?)
479| TupleType
480| NeverType
481| PathType
482| PointerType
483| ArrayType
484| SliceType
485| ReferenceType
486| PlaceholderType
487| FnPointerType
488| ForType
489| ImplTraitType
490| DynTraitType
491 579
492Stmt = 580BoxPat =
493 LetStmt 581 'box' Pat
494| ExprStmt
495 582
496Pat = 583RestPat =
497 OrPat 584 '..'
498| ParenPat
499| RefPat
500| BoxPat
501| BindPat
502| PlaceholderPat
503| DotDotPat
504| PathPat
505| RecordPat
506| TupleStructPat
507| TuplePat
508| SlicePat
509| RangePat
510| LiteralPat
511| MacroPat
512 585
513Expr = 586MacroPat =
514 TupleExpr 587 MacroCall
515| ArrayExpr
516| ParenExpr
517| PathExpr
518| LambdaExpr
519| IfExpr
520| LoopExpr
521| ForExpr
522| WhileExpr
523| ContinueExpr
524| BreakExpr
525| Label
526| BlockExpr
527| ReturnExpr
528| MatchExpr
529| RecordExpr
530| CallExpr
531| IndexExpr
532| MethodCallExpr
533| FieldExpr
534| AwaitExpr
535| TryExpr
536| EffectExpr
537| CastExpr
538| RefExpr
539| PrefixExpr
540| RangeExpr
541| BinExpr
542| Literal
543| MacroCall
544| BoxExpr
diff --git a/xtask/src/metrics.rs b/xtask/src/metrics.rs
index 9ac3fa51d..4bade2c7e 100644
--- a/xtask/src/metrics.rs
+++ b/xtask/src/metrics.rs
@@ -1,7 +1,6 @@
1use std::{ 1use std::{
2 collections::BTreeMap, 2 collections::BTreeMap,
3 env, 3 env,
4 fmt::{self, Write as _},
5 io::Write as _, 4 io::Write as _,
6 path::Path, 5 path::Path,
7 time::{Instant, SystemTime, UNIX_EPOCH}, 6 time::{Instant, SystemTime, UNIX_EPOCH},
@@ -127,40 +126,21 @@ impl Metrics {
127 self.metrics.insert(name.into(), (value, unit)); 126 self.metrics.insert(name.into(), (value, unit));
128 } 127 }
129 128
130 fn json(&self) -> Json { 129 fn json(&self) -> String {
131 let mut json = Json::default(); 130 let mut buf = String::new();
132 self.to_json(&mut json); 131 self.to_json(write_json::object(&mut buf));
133 json 132 buf
134 } 133 }
135 fn to_json(&self, json: &mut Json) {
136 json.begin_object();
137 {
138 json.field("host");
139 self.host.to_json(json);
140
141 json.field("timestamp");
142 let timestamp = self.timestamp.duration_since(UNIX_EPOCH).unwrap();
143 json.number(timestamp.as_secs() as f64);
144 134
145 json.field("revision"); 135 fn to_json(&self, mut obj: write_json::Object<'_>) {
146 json.string(&self.revision); 136 self.host.to_json(obj.object("host"));
147 137 let timestamp = self.timestamp.duration_since(UNIX_EPOCH).unwrap();
148 json.field("metrics"); 138 obj.number("timestamp", timestamp.as_secs() as f64);
149 json.begin_object(); 139 obj.string("revision", &self.revision);
150 { 140 let mut metrics = obj.object("metrics");
151 for (k, (value, unit)) in &self.metrics { 141 for (k, (value, unit)) in &self.metrics {
152 json.field(k); 142 metrics.array(k).number(*value as f64).string(unit);
153 json.begin_array();
154 {
155 json.number(*value as f64);
156 json.string(unit);
157 }
158 json.end_array();
159 }
160 }
161 json.end_object()
162 } 143 }
163 json.end_object();
164 } 144 }
165} 145}
166 146
@@ -189,91 +169,7 @@ impl Host {
189 Ok(line[field.len()..].trim().to_string()) 169 Ok(line[field.len()..].trim().to_string())
190 } 170 }
191 } 171 }
192 fn to_json(&self, json: &mut Json) { 172 fn to_json(&self, mut obj: write_json::Object<'_>) {
193 json.begin_object(); 173 obj.string("os", &self.os).string("cpu", &self.cpu).string("mem", &self.mem);
194 {
195 json.field("os");
196 json.string(&self.os);
197
198 json.field("cpu");
199 json.string(&self.cpu);
200
201 json.field("mem");
202 json.string(&self.mem);
203 }
204 json.end_object();
205 }
206}
207
208struct State {
209 obj: bool,
210 first: bool,
211}
212
213#[derive(Default)]
214struct Json {
215 stack: Vec<State>,
216 buf: String,
217}
218
219impl Json {
220 fn begin_object(&mut self) {
221 self.stack.push(State { obj: true, first: true });
222 self.buf.push('{');
223 }
224 fn end_object(&mut self) {
225 self.stack.pop();
226 self.buf.push('}')
227 }
228 fn begin_array(&mut self) {
229 self.stack.push(State { obj: false, first: true });
230 self.buf.push('[');
231 }
232 fn end_array(&mut self) {
233 self.stack.pop();
234 self.buf.push(']')
235 }
236 fn field(&mut self, name: &str) {
237 self.object_comma();
238 self.string_token(name);
239 self.buf.push(':');
240 }
241 fn string(&mut self, value: &str) {
242 self.array_comma();
243 self.string_token(value);
244 }
245 fn string_token(&mut self, value: &str) {
246 self.buf.push('"');
247 self.buf.extend(value.escape_default());
248 self.buf.push('"');
249 }
250 fn number(&mut self, value: f64) {
251 self.array_comma();
252 write!(self.buf, "{}", value).unwrap();
253 }
254
255 fn array_comma(&mut self) {
256 let state = self.stack.last_mut().unwrap();
257 if state.obj {
258 return;
259 }
260 if !state.first {
261 self.buf.push(',');
262 }
263 state.first = false;
264 }
265
266 fn object_comma(&mut self) {
267 let state = self.stack.last_mut().unwrap();
268 if !state.first {
269 self.buf.push(',');
270 }
271 state.first = false;
272 }
273}
274
275impl fmt::Display for Json {
276 fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
277 write!(f, "{}", self.buf)
278 } 174 }
279} 175}
generated by cgit v1.2.3 (git 2.25.1) at 2025-02-28 18:32:09 +0000