1 # This file is part of NIT ( http://www.nitlanguage.org ).
3 # Licensed under the Apache License, Version 2.0 (the "License");
4 # you may not use this file except in compliance with the License.
5 # You may obtain a copy of the License at
7 # http://www.apache.org/licenses/LICENSE-2.0
9 # Unless required by applicable law or agreed to in writing, software
10 # distributed under the License is distributed on an "AS IS" BASIS,
11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 # See the License for the specific language governing permissions and
13 # limitations under the License.
15 # AST nodes of the Nit language
16 # Was previously based on parser_abs.nit.
21 private import console
23 # Root of the AST class-hierarchy
25 # Location is set during AST building. Once built, location cannon be null.
26 # However, manual instantiated nodes may need more care.
27 var location
: Location is writable, noinit
29 # The location of the important part of the node (identifier or whatever)
30 fun hot_location
: Location do return location
32 # Display a message for the colored location of the node
33 fun debug
(message
: String)
35 sys
.stderr
.write
"{hot_location} {self.class_name}: {message}\n{hot_location.colored_line("0;32")}\n"
38 # Is `self` a token or a pure-structural production like `AQId`?
39 fun is_structural
: Bool do return false
41 # Write the subtree on stdout.
43 # Visit the subtree and display it with additional and useful information.
45 # By default, this displays all kind of nodes and the corresponding lines of codes.
47 # See `ASTDump` for details.
48 fun dump_tree
(display_structural
, display_line
: nullable Bool)
50 var d
= new ASTDump(display_structural
or else true, display_line
or else true)
52 d
.write_to
(sys
.stdout
)
55 # Information to display on a node
57 # Refine this method to add additional information on each node type.
58 fun dump_info
(v
: ASTDump): String do return ""
60 # Parent of the node in the AST
61 var parent
: nullable ANode = null
63 # The topmost ancestor of the element
64 # This just apply `parent` until the first one
70 if p
== null then return res
75 # The most specific common parent between `self` and `other`
76 # Return null if the two node are unrelated (distinct root)
77 fun common_parent
(other
: ANode): nullable ANode
79 # First, get the same depth
80 var s
: nullable ANode = self
81 var o
: nullable ANode = other
82 var d
= s
.depth
- o
.depth
91 assert o
.depth
== s
.depth
92 # Second, go up until same in found
100 # Number of nodes between `self` and the `root` of the AST
101 # ENSURE `self == self.root implies result == 0 `
102 # ENSURE `self != self.root implies result == self.parent.depth + 1`
109 if p
== null then return res
115 # Replace a child with an other node in the AST
116 private fun replace_child
(old_child
: ANode, new_child
: nullable ANode) is abstract
118 # Detach a node from its parent
119 # Aborts if the node is not detachable. use `replace_with` instead
120 # REQUIRE: parent != null
121 # REQUIRE: is_detachable
122 # ENDURE: parent == null
125 assert parent
!= null
126 parent
.replace_child
(self, null)
130 # Replace itself with an other node in the AST
131 # REQUIRE: parent != null
132 # ENSURE: node.parent == old(parent)
133 # ENSURE: parent == null
134 fun replace_with
(node
: ANode)
136 assert parent
!= null
137 parent
.replace_child
(self, node
)
141 # Visit all nodes in order.
142 # Thus, call `v.enter_visit(e)` for each child `e`
143 fun visit_all
(v
: Visitor) is abstract
145 # Do a deep search and return an array of tokens that match a given text
146 fun collect_tokens_by_text
(text
: String): Array[Token]
148 var v
= new CollectTokensByTextVisitor(text
)
153 # Do a deep search and return an array of node that are annotated
154 # The attached node can be retrieved by two invocations of parent
155 fun collect_annotations_by_name
(name
: String): Array[AAnnotation]
157 var v
= new CollectAnnotationsByNameVisitor(name
)
163 private class CollectTokensByTextVisitor
166 var result
= new Array[Token]
167 redef fun visit
(node
)
170 if node
isa Token and node
.text
== text
then result
.add
(node
)
174 private class CollectAnnotationsByNameVisitor
177 var result
= new Array[AAnnotation]
178 redef fun visit
(node
)
181 if node
isa AAnnotation and node
.n_atid
.n_id
.text
== name
then result
.add
(node
)
185 # A helper class to handle (print) Nit AST as an OrderedTree
188 super OrderedTree[ANode]
190 # Reference to the last parent in the Ordered Tree
191 # Is used to handle the initial node parent and workaround possible inconsistent `ANode::parent`
192 private var last_parent
: nullable ANode = null
194 # Display tokens and structural production?
196 # Should tokens (and structural production like AQId) be displayed?
197 var display_structural
: Bool
201 # Should each new line be displayed (numbered and in gray)?
202 var display_line
: Bool
204 # Current line number (when printing lines)
209 if not display_structural
and n
.is_structural
then return
217 redef fun write_line
(o
, n
, p
)
220 var ls
= n
.location
.line_start
221 var file
= n
.location
.file
223 if ls
> line
and file
!= null then
224 if line
== 0 then line
= ls
- 1
227 o
.write
"{line}\t{file.get_line(line)}\n".light_gray
238 return "{n.class_name} {n.dump_info(self)} @{n.location}"
242 fun yellow
(s
: String): String do return s
.yellow
245 fun red
(s
: String): String do return s
.red
248 # A sequence of nodes
249 # It is a specific class (instead of using a Array) to track the parent/child relation when nodes are added or removed
250 class ANodes[E
: ANode]
252 private var parent
: ANode
253 private var items
= new Array[E
]
254 redef fun iterator
do return items
.iterator
255 redef fun reverse_iterator
do return items
.reverse_iterator
256 redef fun length
do return items
.length
257 redef fun is_empty
do return items
.is_empty
276 var res
= items
.shift
288 redef fun []=(index
, e
)
290 hook_remove
(self[index
])
294 redef fun remove_at
(index
)
296 hook_remove
(items
[index
])
297 items
.remove_at
(index
)
299 private fun hook_add
(e
: E
)
301 #assert e.parent == null
304 private fun hook_remove
(e
: E
)
306 assert e
.parent
== parent
310 # Used in parent constructor to fill elements
311 private fun unsafe_add_all
(nodes
: Collection[Object])
313 var parent
= self.parent
321 private fun replace_child
(old_child
: ANode, new_child
: nullable ANode): Bool
323 var parent
= self.parent
324 for i
in [0..length
[ do
325 if self[i
] == old_child
then
326 if new_child
!= null then
327 assert new_child
isa E
329 new_child
.parent
= parent
339 private fun visit_all
(v
: Visitor)
341 for n
in self do v
.enter_visit
(n
)
345 # Ancestor of all tokens
346 # A token is a node that has a `text` but no children.
350 # The raw content on the token
351 fun text
: String is abstract
353 # The raw content on the token
354 fun text
=(text
: String) is abstract
356 # The previous token in the Lexer.
357 # May have disappeared in the AST
358 var prev_token
: nullable Token = null
360 # The next token in the Lexer.
361 # May have disappeared in the AST
362 var next_token
: nullable Token = null
364 # Is `self` a token discarded from the AST?
366 # Loose tokens are not present in the AST.
367 # It means they were identified by the lexer but were discarded by the parser.
368 # It also means that they are not visited or manipulated by AST-related functions.
370 # Each loose token is attached to the non-loose token that precedes or follows it.
371 # The rules are the following:
373 # * tokens that follow a non-loose token on a same line are attached to it.
375 # * other tokens, thus that precede a non-loose token on the same line or the next one,
376 # are attached to this one. See `prev_looses`.
378 # Loose tokens are mostly end of lines (`TEol`) and comments (`TComment`).
379 # Whitespace are ignored by the lexer, so they are not even considered as loose tokens.
380 # See `blank_before` to get the whitespace that separate tokens.
383 redef fun is_structural
do return true
385 redef fun dump_info
(v
) do return " {text.escape_to_c}"
387 # Loose tokens that precede `self`.
389 # These tokens start the line or belong to a line with only loose tokens.
390 var prev_looses
= new Array[Token] is lazy
392 # Loose tokens that follow `self`
394 # These tokens are on the same line than `self`.
395 var next_looses
= new Array[Token] is lazy
397 # The verbatim blank text between `prev_token` and `self`
398 fun blank_before
: String
400 if prev_token
== null then return ""
401 var from
= prev_token
.location
.pend
+1
402 var to
= location
.pstart
403 return location
.file
.string
.substring
(from
,to-from
)
406 redef fun to_s
: String do
410 redef fun visit_all
(v
: Visitor) do end
411 redef fun replace_child
(old_child
: ANode, new_child
: nullable ANode) do end
414 redef class SourceFile
415 # The first token parser by the lexer
416 # May have disappeared in the final AST
417 var first_token
: nullable Token = null
419 # The first token parser by the lexer
420 # May have disappeared in the final AST
421 var last_token
: nullable Token = null
424 # Ancestor of all productions
425 # A production is a node without text but that usually has children.
429 # All the annotations attached directly to the node
430 var n_annotations
: nullable AAnnotations = null is writable
432 # Return all its annotations of a given name in the order of their declaration
433 # Retun an empty array if no such an annotation.
434 fun get_annotations
(name
: String): Array[AAnnotation]
436 var res
= new Array[AAnnotation]
437 var nas
= n_annotations
438 if nas
!= null then for na
in nas
.n_items
do
439 if na
.name
!= name
then continue
442 if self isa AClassdef then for na
in n_propdefs
do
443 if na
isa AAnnotPropdef then
444 if na
.name
!= name
then continue
452 redef fun replace_with
(n
: ANode)
456 if not isset n
._location
and isset _location
then n
._location
= _location
460 # Abstract standard visitor on the AST
461 abstract class Visitor
462 # What the visitor do when a node is visited
463 # Concrete visitors should implement this method.
465 protected fun visit
(e
: ANode) is abstract
467 # Ask the visitor to visit a given node.
468 # Usually automatically called by visit_all* methods.
469 # This method should not be redefined
470 fun enter_visit
(e
: nullable ANode)
472 if e
== null then return
473 var old
= _current_node
479 # The current visited node
480 var current_node
: nullable ANode = null is writable
483 # Token of end of line (basically `\n`)
492 # Token of a line of comments
493 # Starts with the `#` and contains the final end-of-line (if any)
498 # A token associated with a keyword
499 abstract class TokenKeyword
503 return "keyword '{text}'"
507 # The deprecated keyword `package`.
512 # The keyword `module`
517 # The keyword `import`
522 # The keyword `class`
527 # The keyword `abstract`
532 # The keyword `interface`
537 # The keywords `enum` ane `universal`
562 # The keyword `redef`
577 # The keyword `catch`
587 # The keyword `extern`
592 # The keyword `public`
597 # The keyword `protected`
602 # The keyword `private`
607 # The keyword `intrude`
627 # The keyword `while`
657 # The keyword `implies`
667 # The keyword `return`
672 # The keyword `continue`
677 # The keyword `break`
682 # The keyword `abort`
687 # The keyword `assert`
707 # The keyword `super`
722 # The keyword `false`
737 # The keyword `nullable`
742 # The keyword `isset`
747 # The keyword `label`
757 # The keyword `yield`
762 # The special keyword `__DEBUG__`
807 # A token associated with an operator (and other lookalike symbols)
808 abstract class TokenOperator
812 return "operator '{text}'"
996 # A class (or formal type) identifier. They start with an uppercase.
1001 do return "type identifier '{text}'"
1005 # A standard identifier (variable, method...). They start with a lowercase.
1010 do return "identifier '{text}'"
1014 # An attribute identifier. They start with an underscore.
1019 do return "attribute '{text}'"
1023 # A token of a literal value (string, integer, etc).
1024 abstract class TokenLiteral
1028 do return "literal value '{text}'"
1037 # A literal floating point number
1042 # A literal character
1052 # The starting part of a super string (between `"` and `{`)
1057 # The middle part of a super string (between `}` and `{`)
1062 # The final part of a super string (between `}` and `"`)
1067 # A malformed string
1072 do return "malformed string {text}"
1081 do return "malformed character {text}"
1085 # A extern code block
1086 class TExternCodeSegment
1095 return "end of file"
1099 # A mark of an error
1103 # A lexical error (unexpected character)
1107 # A syntactic error (unexpected token)
1112 # The main node of a Nit source-file
1116 # The declaration part of the module
1117 var n_moduledecl
: nullable AModuledecl = null is writable
1119 # List of importation clauses
1120 var n_imports
= new ANodes[AImport](self)
1122 # List of extern blocks
1123 var n_extern_code_blocks
= new ANodes[AExternCodeBlock](self)
1125 # List of class definition (including top-level methods and the main)
1126 var n_classdefs
= new ANodes[AClassdef](self)
1129 # Abstract class for definition of entities
1130 abstract class ADefinition
1133 var n_doc
: nullable ADoc = null is writable
1135 # The `redef` keyword
1136 var n_kwredef
: nullable TKwredef = null is writable
1138 # The declared visibility
1139 var n_visibility
: nullable AVisibility = null is writable
1142 # The declaration of the module with the documentation, name, and annotations
1146 # The `module` keyword
1147 var n_kwmodule
: TKwmodule is writable, noinit
1149 # The declared module name
1150 var n_name
: AModuleName is writable, noinit
1153 # A import clause of a module
1154 abstract class AImport
1157 # The declared visibility
1158 var n_visibility
: AVisibility is writable, noinit
1160 # The `import` keyword
1161 var n_kwimport
: TKwimport is writable, noinit
1164 # A standard import clause. eg `import x`
1167 # The imported module name
1168 var n_name
: AModuleName is writable, noinit
1171 # The special import clause of the kernel module. eg `import end`
1174 # The `end` keyword, that indicate the root module
1175 var n_kwend
: TKwend is writable, noinit
1178 # A visibility modifier
1180 # The public visibility is an empty production (no keyword).
1182 # Note: even if some visibilities are only valid on some placse (for instance, no `protected` class or no `intrude` method)
1183 # the parser has no such a restriction, therefore the semantic phases has to check that the visibilities make sense.
1184 abstract class AVisibility
1188 # An implicit or explicit public visibility modifier
1189 class APublicVisibility
1191 # The `public` keyword, if any
1192 var n_kwpublic
: nullable TKwpublic = null is writable
1194 # An explicit private visibility modifier
1195 class APrivateVisibility
1197 # The `private` keyword
1198 var n_kwprivate
: TKwprivate is writable, noinit
1200 # An explicit protected visibility modifier
1201 class AProtectedVisibility
1203 # The `protected` keyword
1204 var n_kwprotected
: TKwprotected is writable, noinit
1206 # An explicit intrude visibility modifier
1207 class AIntrudeVisibility
1209 # The `intrude` keyword
1210 var n_kwintrude
: TKwintrude is writable, noinit
1213 # A class definition
1214 # While most definition are `AStdClassdef`
1215 # There is tow special case of class definition
1216 abstract class AClassdef
1218 # All the declared properties (including the main method)
1219 var n_propdefs
= new ANodes[APropdef](self)
1222 # A standard class definition with a name, superclasses and properties
1227 # The class kind (interface, abstract class, etc.)
1228 var n_classkind
: AClasskind is writable, noinit
1230 # The name of the class
1231 var n_qid
: nullable AQclassid = null is writable
1234 var n_obra
: nullable TObra = null is writable
1236 # The list of formal parameter types
1237 var n_formaldefs
= new ANodes[AFormaldef](self)
1240 var n_cbra
: nullable TCbra = null is writable
1242 # The extern block code
1243 var n_extern_code_block
: nullable AExternCodeBlock = null is writable
1246 var n_kwend
: TKwend is writable, noinit
1248 fun n_superclasses
: Array[ASuperPropdef] do
1249 return [for d
in n_propdefs
do if d
isa ASuperPropdef then d
]
1252 redef fun hot_location
do return n_qid
.location
1255 # The implicit class definition of the implicit main method
1260 # The implicit class definition of the top-level methods
1265 # The modifier for the kind of class (abstract, interface, etc.)
1266 abstract class AClasskind
1270 # A default, or concrete class modifier (just `class`)
1271 class AConcreteClasskind
1274 # The `class` keyword.
1275 var n_kwclass
: TKwclass is writable, noinit
1278 # An abstract class modifier (`abstract class`)
1279 class AAbstractClasskind
1282 # The `abstract` keyword.
1283 var n_kwabstract
: TKwabstract is writable, noinit
1285 # The `class` keyword.
1286 var n_kwclass
: TKwclass is writable, noinit
1289 # An interface class modifier (`interface`)
1290 class AInterfaceClasskind
1293 # The `interface` keyword.
1294 var n_kwinterface
: TKwinterface is writable, noinit
1297 # An enum/universal class modifier (`enum class`)
1298 class AEnumClasskind
1301 # The `enum` keyword.
1302 var n_kwenum
: TKwenum is writable, noinit
1305 # An extern class modifier (`extern class`)
1306 class AExternClasskind
1309 # The `extern` keyword.
1310 var n_kwextern
: TKwextern is writable, noinit
1312 # The `class` keyword.
1313 var n_kwclass
: nullable TKwclass = null is writable
1316 # The definition of a formal generic parameter type. eg `X: Y`
1320 # The name of the parameter type
1321 var n_id
: TClassid is writable, noinit
1323 # The bound of the parameter type
1324 var n_type
: nullable AType = null is writable
1327 # The definition of a property
1328 abstract class APropdef
1332 # A definition of an attribute
1333 # For historical reason, old-syle and new-style attributes use the same `ANode` sub-class
1338 var n_kwvar
: TKwvar is writable, noinit
1340 # The identifier for a new-style attribute
1341 var n_id2
: TId is writable, noinit
1343 # The declared type of the attribute
1344 var n_type
: nullable AType = null is writable
1347 var n_assign
: nullable TAssign = null is writable
1349 # The initial value, if any (set with `=`)
1350 var n_expr
: nullable AExpr = null is writable
1353 var n_kwdo
: nullable TKwdo = null is writable
1355 # The initial value, if any (set with `do return`)
1356 var n_block
: nullable AExpr = null is writable
1359 var n_kwend
: nullable TKwend = null is writable
1361 redef fun hot_location
1363 return n_id2
.location
1367 # A definition of all kind of method (including constructors)
1371 # The `fun` keyword, if any
1372 var n_kwmeth
: nullable TKwmeth = null is writable
1374 # The `init` keyword, if any
1375 var n_kwinit
: nullable TKwinit = null is writable
1377 # The `new` keyword, if any
1378 var n_kwnew
: nullable TKwnew = null is writable
1380 # The name of the method, if any
1381 var n_methid
: nullable AMethid = null is writable
1383 # The signature of the method, if any
1384 var n_signature
: nullable ASignature = null is writable
1387 var n_kwdo
: nullable TKwdo = null is writable
1389 # The body (in Nit) of the method, if any
1390 var n_block
: nullable AExpr = null is writable
1393 var n_kwend
: nullable TKwend = null is writable
1395 # The list of declared callbacks (for extern methods)
1396 var n_extern_calls
: nullable AExternCalls = null is writable
1398 # The body (in extern code) of the method, if any
1399 var n_extern_code_block
: nullable AExternCodeBlock = null is writable
1401 redef fun hot_location
1403 if n_methid
!= null then
1404 return n_methid
.location
1405 else if n_kwinit
!= null then
1406 return n_kwinit
.location
1407 else if n_kwnew
!= null then
1408 return n_kwnew
.location
1415 # The implicit main method
1416 class AMainMethPropdef
1425 # A super-class. eg `super X`
1430 var n_kwsuper
: TKwsuper is writable, noinit
1432 # The super-class (indicated as a type)
1433 var n_type
: AType is writable, noinit
1437 # Declaration of callbacks for extern methods
1441 # The `import` keyword
1442 var n_kwimport
: TKwimport is writable, noinit
1444 # The list of declared callbacks
1445 var n_extern_calls
: ANodes[AExternCall] = new ANodes[AExternCall](self)
1448 # A single callback declaration
1449 abstract class AExternCall
1453 # A single callback declaration on a method
1454 abstract class APropExternCall
1458 # A single callback declaration on a method on the current receiver
1459 class ALocalPropExternCall
1460 super APropExternCall
1462 # The name of the called-back method
1463 var n_methid
: AMethid is writable, noinit
1466 # A single callback declaration on a method on an explicit receiver type.
1467 class AFullPropExternCall
1468 super APropExternCall
1470 # The type of the receiver of the called-back method
1471 var n_type
: AType is writable, noinit
1474 var n_dot
: nullable TDot = null is writable
1476 # The name of the called-back method
1477 var n_methid
: AMethid is writable, noinit
1480 # A single callback declaration on a method on a constructor
1481 class AInitPropExternCall
1482 super APropExternCall
1484 # The allocated type
1485 var n_type
: AType is writable, noinit
1488 # A single callback declaration on a `super` call
1489 class ASuperExternCall
1492 # The `super` keyword
1493 var n_kwsuper
: TKwsuper is writable, noinit
1496 # A single callback declaration on a cast
1497 abstract class ACastExternCall
1501 # A single callback declaration on a cast to a given type
1502 class ACastAsExternCall
1503 super ACastExternCall
1505 # The origin type of the cast
1506 var n_from_type
: AType is writable, noinit
1509 var n_dot
: nullable TDot = null is writable
1512 var n_kwas
: TKwas is writable, noinit
1514 # The destination of the cast
1515 var n_to_type
: AType is writable, noinit
1518 # A single callback declaration on a cast to a nullable type
1519 class AAsNullableExternCall
1520 super ACastExternCall
1522 # The origin type to cast as nullable
1523 var n_type
: AType is writable, noinit
1526 var n_kwas
: TKwas is writable, noinit
1528 # The `nullable` keyword
1529 var n_kwnullable
: TKwnullable is writable, noinit
1532 # A single callback declaration on a cast to a non-nullable type
1533 class AAsNotNullableExternCall
1534 super ACastExternCall
1536 # The destination type on a cast to not nullable
1537 var n_type
: AType is writable, noinit
1540 var n_kwas
: TKwas is writable, noinit
1543 var n_kwnot
: TKwnot is writable, noinit
1545 # The `nullable` keyword
1546 var n_kwnullable
: TKwnullable is writable, noinit
1549 # A definition of a virtual type
1553 # The `type` keyword
1554 var n_kwtype
: TKwtype is writable, noinit
1556 # The name of the virtual type
1557 var n_qid
: AQclassid is writable, noinit
1559 # The bound of the virtual type
1560 var n_type
: AType is writable, noinit
1563 # The identifier of a method in a method declaration.
1564 # There is a specific class because of operator and setters.
1565 abstract class AMethid
1569 # A method name with a simple identifier
1573 # The simple identifier
1574 var n_id
: TId is writable, noinit
1577 # A method name for an operator
1578 class AOperatorMethid
1581 # The associated operator symbol
1582 var n_op
: Token is writable, noinit
1586 super AOperatorMethid
1591 super AOperatorMethid
1596 super AOperatorMethid
1599 # A method name `**`
1600 class AStarstarMethid
1601 super AOperatorMethid
1606 super AOperatorMethid
1610 class APercentMethid
1611 super AOperatorMethid
1616 super AOperatorMethid
1621 super AOperatorMethid
1626 super AOperatorMethid
1631 super AOperatorMethid
1634 # A method name `==`
1636 super AOperatorMethid
1639 # A method name `!=`
1641 super AOperatorMethid
1644 # A method name `<=`
1646 super AOperatorMethid
1649 # A method name `>=`
1651 super AOperatorMethid
1656 super AOperatorMethid
1661 super AOperatorMethid
1664 # A method name `<<`
1666 super AOperatorMethid
1669 # A method name `>>`
1671 super AOperatorMethid
1674 # A method name `<=>`
1675 class AStarshipMethid
1676 super AOperatorMethid
1679 # A method name `[]`
1684 var n_obra
: TObra is writable, noinit
1687 var n_cbra
: TCbra is writable, noinit
1690 # A setter method name with a simple identifier (with a `=`)
1694 # The base identifier
1695 var n_id
: TId is writable, noinit
1698 var n_assign
: TAssign is writable, noinit
1701 # A method name `[]=`
1702 class ABraassignMethid
1706 var n_obra
: TObra is writable, noinit
1709 var n_cbra
: TCbra is writable, noinit
1712 var n_assign
: TAssign is writable, noinit
1715 # A potentially qualified simple identifier `foo::bar::baz`
1718 # The qualifier, if any
1719 var n_qualified
: nullable AQualified = null is writable
1721 # The final identifier
1722 var n_id
: TId is writable, noinit
1724 redef fun is_structural
do return true
1727 # A potentially qualified class identifier `foo::bar::Baz`
1730 # The qualifier, if any
1731 var n_qualified
: nullable AQualified = null is writable
1733 # The final identifier
1734 var n_id
: TClassid is writable, noinit
1736 redef fun is_structural
do return true
1739 # A signature in a method definition. eg `(x,y:X,z:Z):T`
1744 var n_opar
: nullable TOpar = null is writable
1746 # The list of parameters
1747 var n_params
= new ANodes[AParam](self)
1750 var n_cpar
: nullable TCpar = null is writable
1753 var n_type
: nullable AType = null is writable
1756 # A parameter definition in a signature. eg `x:X`
1760 # The name of the parameter
1761 var n_id
: TId is writable, noinit
1763 # The type of the parameter, if any
1764 var n_type
: nullable AType = null is writable
1766 # The `...` symbol to indicate varargs
1767 var n_dotdotdot
: nullable TDotdotdot = null is writable
1770 # A static type. eg `nullable X[Y]`
1773 # The `nullable` keyword
1774 var n_kwnullable
: nullable TKwnullable = null is writable
1776 # The name of the class or of the formal type
1777 var n_qid
: AQclassid is writable, noinit
1779 # The opening bracket
1780 var n_obra
: nullable TObra = null is writable
1782 # Type arguments for a generic type
1783 var n_types
= new ANodes[AType](self)
1785 # The closing bracket
1786 var n_cbra
: nullable TCbra = null is writable
1789 # A label at the end of a block or in a break/continue statement. eg `label x`
1793 # The `label` keyword
1794 var n_kwlabel
: TKwlabel is writable, noinit
1796 # The name of the label, if any
1797 var n_id
: nullable TId is writable, noinit
1800 # Expression and statements
1801 # From a AST point of view there is no distinction between statement and expressions (even if the parser has to distinguish them)
1802 abstract class AExpr
1806 # A sequence of `AExpr` (usually statements)
1807 # The last `AExpr` gives the value of the whole block
1811 # The list of statements in the bloc.
1812 # The last element is often considered as an expression that give the value of the whole block.
1813 var n_expr
= new ANodes[AExpr](self)
1816 var n_kwend
: nullable TKwend = null is writable
1819 # A declaration of a local variable. eg `var x: X = y`
1824 var n_kwvar
: nullable TKwvar = null is writable
1826 # The name of the local variable
1827 var n_id
: TId is writable, noinit
1829 # The declaration type of the local variable
1830 var n_type
: nullable AType = null is writable
1832 # The `=` symbol (for the initial value)
1833 var n_assign
: nullable TAssign = null is writable
1835 # The initial value, if any
1836 var n_expr
: nullable AExpr = null is writable
1839 # A `return` statement. eg `return x`
1843 # The `return` keyword
1844 var n_kwreturn
: nullable TKwreturn = null is writable
1847 # A `yield` statement. eg `yield x`
1851 # The `yield` keyword
1852 var n_kwyield
: nullable TKwyield = null is writable
1854 # The return value, if any
1855 var n_expr
: nullable AExpr = null is writable
1858 # Something that has a label.
1859 abstract class ALabelable
1862 # The associated label declatation
1863 var n_label
: nullable ALabel = null is writable
1866 # A `break` or a `continue`
1867 abstract class AEscapeExpr
1871 # The return value, if nay (unused currently)
1872 var n_expr
: nullable AExpr = null is writable
1875 # A `break` statement.
1879 # The `break` keyword
1880 var n_kwbreak
: TKwbreak is writable, noinit
1883 # An `abort` statement
1887 # The `abort` keyword
1888 var n_kwabort
: TKwabort is writable, noinit
1891 # A `continue` statement
1895 # The `continue` keyword.
1896 var n_kwcontinue
: nullable TKwcontinue = null is writable
1905 var n_kwdo
: TKwdo is writable, noinit
1907 # The list of statements of the `do`.
1908 var n_block
: nullable AExpr = null is writable
1910 # The `catch` keyword
1911 var n_kwcatch
: nullable TKwcatch = null is writable
1913 # The do catch block
1914 var n_catch
: nullable AExpr = null is writable
1922 var n_kwif
: TKwif is writable, noinit
1924 # The expression used as the condition of the `if`
1925 var n_expr
: AExpr is writable, noinit
1927 # The `then` keyword
1928 var n_kwthen
: TKwthen is writable, noinit
1930 # The body of the `then` part
1931 var n_then
: nullable AExpr = null is writable
1933 # The `else` keyword
1934 var n_kwelse
: nullable TKwelse = null is writable
1936 # The body of the `else` part
1937 var n_else
: nullable AExpr = null is writable
1940 # A `if` expression (ternary conditional). eg. `if true then 1 else 0`
1945 var n_kwif
: TKwif is writable, noinit
1947 # The expression used as the condition of the `if`
1948 var n_expr
: AExpr is writable, noinit
1950 # The `then` keyword
1951 var n_kwthen
: TKwthen is writable, noinit
1953 # The expression in the `then` part
1954 var n_then
: AExpr is writable, noinit
1956 # The `else` keyword
1957 var n_kwelse
: TKwelse is writable, noinit
1959 # The expression in the `else` part
1960 var n_else
: AExpr is writable, noinit
1963 # A `while` statement
1968 # The `while` keyword
1969 var n_kwwhile
: TKwwhile is writable, noinit
1971 # The expression used as the condition of the `while`
1972 var n_expr
: AExpr is writable, noinit
1975 var n_kwdo
: TKwdo is writable, noinit
1977 # The body of the loop
1978 var n_block
: nullable AExpr = null is writable
1981 # A `loop` statement
1986 # The `loop` keyword
1987 var n_kwloop
: TKwloop is writable, noinit
1989 # The body of the loop
1990 var n_block
: nullable AExpr = null is writable
1999 var n_kwfor
: TKwfor is writable, noinit
2001 # The list of groups to iterate
2002 var n_groups
= new ANodes[AForGroup](self)
2005 var n_kwdo
: TKwdo is writable, noinit
2007 # The body of the loop
2008 var n_block
: nullable AExpr = null is writable
2011 # A collection iterated by a for, its automatic variables and its implicit iterator.
2013 # Standard `for` iterate on a single collection.
2014 # Multiple `for` can iterate on more than one collection at once.
2018 # The list of name of the automatic variables
2019 var n_ids
= new ANodes[TId](self)
2022 var n_kwin
: TKwin is writable, noinit
2024 # The expression used as the collection to iterate on
2025 var n_expr
: AExpr is writable, noinit
2028 # A `with` statement
2033 # The `with` keyword
2034 var n_kwwith
: TKwwith is writable, noinit
2036 # The expression used to get the value to control
2037 var n_expr
: AExpr is writable, noinit
2040 var n_kwdo
: TKwdo is writable, noinit
2042 # The body of the loop
2043 var n_block
: nullable AExpr = null is writable
2046 # An `assert` statement
2050 # The `assert` keyword
2051 var n_kwassert
: TKwassert is writable, noinit
2053 # The name of the assert, if any
2054 var n_id
: nullable TId = null is writable
2056 # The expression used as the condition of the `assert`
2057 var n_expr
: AExpr is writable, noinit
2059 # The `else` keyword
2060 var n_kwelse
: nullable TKwelse = null is writable
2062 # The body to execute when the assert fails
2063 var n_else
: nullable AExpr = null is writable
2066 # Whatever is a simple assignment. eg `= something`
2067 abstract class AAssignFormExpr
2071 var n_assign
: TAssign is writable, noinit
2073 # The right-value to assign.
2074 var n_value
: AExpr is writable, noinit
2077 # Whatever is a combined assignment. eg `+= something`
2078 abstract class AReassignFormExpr
2081 # The combined operator (eg. `+=`)
2082 var n_assign_op
: AAssignOp is writable, noinit
2084 # The right-value to apply on the combined operator.
2085 var n_value
: AExpr is writable, noinit
2088 # A `once` expression. eg `once x`
2092 # The `once` keyword
2093 var n_kwonce
: TKwonce is writable, noinit
2095 # The expression to evaluate only one time
2096 var n_expr
: AExpr is writable, noinit
2099 # A polymorphic invocation of a method
2100 # The form of the invocation (name, arguments, etc.) are specific
2101 abstract class ASendExpr
2103 # The receiver of the method invocation
2104 var n_expr
: AExpr is writable, noinit
2107 # A binary operation on a method
2108 abstract class ABinopExpr
2112 var n_op
: Token is writable, noinit
2114 # The second operand of the operation
2115 # Note: the receiver (`n_expr`) is the first operand
2116 var n_expr2
: AExpr is writable, noinit
2118 # The name of the operator (eg '+')
2119 fun operator
: String is abstract
2122 # Something that is boolean expression
2123 abstract class ABoolExpr
2127 # Something that is binary boolean expression
2128 abstract class ABinBoolExpr
2131 # The first boolean operand
2132 var n_expr
: AExpr is writable, noinit
2135 var n_op
: Token is writable, noinit
2137 # The second boolean operand
2138 var n_expr2
: AExpr is writable, noinit
2146 # A `and` expression
2151 # A `or else` expression
2155 # The `else` keyword
2156 var n_kwelse
: TKwelse is writable, noinit
2159 # A `implies` expression
2164 # A `not` expression
2169 var n_kwnot
: TKwnot is writable, noinit
2171 # The boolean operand of the `not`
2172 var n_expr
: AExpr is writable, noinit
2175 # A `==` or a `!=` expression
2177 # Both have a similar effect on adaptive typing, so this class factorizes the common behavior.
2185 redef fun operator
do return "=="
2191 redef fun operator
do return "!="
2197 redef fun operator
do return "<"
2203 redef fun operator
do return "<="
2209 redef fun operator
do return "<<"
2215 redef fun operator
do return ">"
2221 redef fun operator
do return ">="
2227 redef fun operator
do return ">>"
2230 # A type-ckeck expression. eg `x isa T`
2234 # The expression to check
2235 var n_expr
: AExpr is writable, noinit
2238 var n_kwisa
: TKwisa is writable, noinit
2240 # The destination type to check to
2241 var n_type
: AType is writable, noinit
2247 redef fun operator
do return "+"
2253 redef fun operator
do return "-"
2256 # A `<=>` expression
2259 redef fun operator
do return "<=>"
2265 redef fun operator
do return "*"
2271 redef fun operator
do return "**"
2277 redef fun operator
do return "/"
2283 redef fun operator
do return "%"
2289 redef fun operator
do return "|"
2295 redef fun operator
do return "^"
2301 redef fun operator
do return "&"
2304 # A unary operation on a method
2305 abstract class AUnaryopExpr
2309 var n_op
: Token is writable, noinit
2311 # The name of the operator (eg '+')
2312 fun operator
: String is abstract
2315 # A unary minus expression. eg `-x`
2318 redef fun operator
do return "-"
2321 # A unary plus expression. eg `+x`
2324 redef fun operator
do return "+"
2327 # A unary `~` expression
2330 redef fun operator
do return "~"
2333 # An explicit instantiation. eg `new T`
2338 var n_kwnew
: TKwnew is writable, noinit
2340 # The `type` keyword
2341 var n_type
: AType is writable, noinit
2343 # The name of the named-constructor, if any
2344 var n_qid
: nullable AQid = null is writable
2346 # The arguments of the `new`
2347 var n_args
: AExprs is writable, noinit
2350 # Whatever is a old-style attribute access
2351 abstract class AAttrFormExpr
2354 # The receiver of the attribute
2355 var n_expr
: AExpr is writable, noinit
2357 # The name of the attribute
2358 var n_id
: TAttrid is writable, noinit
2362 # The read of an attribute. eg `x._a`
2367 # The assignment of an attribute. eg `x._a=y`
2368 class AAttrAssignExpr
2370 super AAssignFormExpr
2373 # Whatever looks-like a call with a standard method and any number of arguments.
2374 abstract class ACallFormExpr
2377 # The name of the method
2378 var n_qid
: AQid is writable, noinit
2380 # The arguments of the call
2381 var n_args
: AExprs is writable, noinit
2384 # A complex setter call (standard or brackets)
2385 abstract class ASendReassignFormExpr
2387 super AReassignFormExpr
2390 # A complex attribute assignment. eg `x._a+=y`
2391 class AAttrReassignExpr
2393 super AReassignFormExpr
2396 # A call with a standard method-name and any number of arguments. eg `x.m(y)`. OR just a simple id
2397 # Note: because the parser cannot distinguish a variable read with a method call with an implicit receiver and no arguments, it always returns a `ACallExpr`.
2398 # Semantic analysis have to transform them to instance of `AVarExpr`.
2403 # A setter call with a standard method-name and any number of arguments. eg `x.m(y)=z`. OR just a simple assignment.
2404 # Note: because the parser cannot distinguish a variable write with a setter call with an implicit receiver and no arguments, it always returns a `ACallAssignExpr`.
2405 # Semantic analysis have to transform them to instance of `AVarAssignExpr`.
2406 class ACallAssignExpr
2408 super AAssignFormExpr
2411 # A complex setter call with a standard method-name and any number of arguments. eg `x.m(y)+=z`. OR just a simple complex assignment.
2412 # Note: because the parser cannot distinguish a variable write with a complex setter call with an implicit receiver and no arguments, it always returns a `ACallReassignExpr`.
2413 # Semantic analysis have to transform them to instance of `AVarReassignExpr`.
2414 class ACallReassignExpr
2416 super ASendReassignFormExpr
2419 # A call to `super`. OR a call of a super-constructor
2423 # The qualifier part before the super (currenlty unused)
2424 var n_qualified
: nullable AQualified = null is writable
2426 # The `super` keyword
2427 var n_kwsuper
: TKwsuper is writable, noinit
2429 # The arguments of the super
2430 var n_args
: AExprs is writable, noinit
2433 # A call to the `init` constructor.
2434 # Note: because `init` is a keyword and not a `TId`, the explicit call to init cannot be a `ACallFormExpr`.
2438 # The `init` keyword
2439 var n_kwinit
: TKwinit is writable, noinit
2441 # The arguments of the init
2442 var n_args
: AExprs is writable, noinit
2445 # Whatever looks-like a call of the brackets `[]` operator.
2446 abstract class ABraFormExpr
2449 # The arguments inside the brackets
2450 var n_args
: AExprs is writable, noinit
2453 # A call of the brackets operator. eg `x[y,z]`
2458 # A setter call of the bracket operator. eg `x[y,z]=t`
2459 class ABraAssignExpr
2461 super AAssignFormExpr
2464 # Whatever is an access to a local variable
2465 abstract class AVarFormExpr
2468 # The name of the attribute
2469 var n_id
: TId is writable, noinit
2472 # A complex setter call of the bracket operator. eg `x[y,z]+=t`
2473 class ABraReassignExpr
2475 super ASendReassignFormExpr
2478 # A local variable read access.
2479 # The parser cannot instantiate them, see `ACallExpr`.
2484 # A local variable simple assignment access
2485 # The parser cannot instantiate them, see `ACallAssignExpr`.
2486 class AVarAssignExpr
2488 super AAssignFormExpr
2491 # A local variable complex assignment access
2492 # The parser cannot instantiate them, see `ACallReassignExpr`.
2493 class AVarReassignExpr
2495 super AReassignFormExpr
2498 # A literal range, open or closed
2499 abstract class ARangeExpr
2502 # The left (lower) element of the range
2503 var n_expr
: AExpr is writable, noinit
2506 var n_dotdot
: TDotdot is writable, noinit
2508 # The right (upper) element of the range
2509 var n_expr2
: AExpr is writable, noinit
2512 # A closed literal range. eg `[x..y]`
2516 # The opening bracket `[`
2517 var n_obra
: TObra is writable, noinit
2519 # The closing bracket `]`
2520 var n_cbra
: TCbra is writable, noinit
2523 # An open literal range. eg `[x..y[`
2527 # The opening bracket `[`
2528 var n_obra
: TObra is writable, noinit
2530 # The closing bracket `[` (because open range)
2531 var n_cbra
: TObra is writable, noinit
2534 # A literal array. eg. `[x,y,z]`
2538 # The opening bracket `[`
2539 var n_obra
: TObra is writable, noinit
2541 # The elements of the array
2542 var n_exprs
= new ANodes[AExpr](self)
2544 # The type of the element of the array (if any)
2545 var n_type
: nullable AType = null is writable
2547 # The closing bracket `]`
2548 var n_cbra
: TCbra is writable, noinit
2555 # The `self` keyword
2556 var n_kwself
: nullable TKwself = null is writable
2559 # When there is no explicit receiver, `self` is implicit
2560 class AImplicitSelfExpr
2564 # A `true` boolean literal constant
2568 # The `true` keyword
2569 var n_kwtrue
: TKwtrue is writable, noinit
2572 # A `false` boolean literal constant
2576 # The `false` keyword
2577 var n_kwfalse
: TKwfalse is writable, noinit
2580 # A `null` literal constant
2584 # The `null` keyword
2585 var n_kwnull
: TKwnull is writable, noinit
2588 # An integer literal
2593 var n_integer
: TInteger is writable, noinit
2601 var n_float
: TFloat is writable, noinit
2604 # A character literal
2608 # The character token
2609 var n_char
: TChar is writable, noinit
2613 abstract class AStringFormExpr
2617 var n_string
: Token is writable, noinit
2620 # A simple string. eg. `"abc"`
2622 super AStringFormExpr
2625 # The start of a superstring. eg `"abc{`
2626 class AStartStringExpr
2627 super AStringFormExpr
2630 # The middle of a superstring. eg `}abc{`
2631 class AMidStringExpr
2632 super AStringFormExpr
2635 # The end of a superstrng. eg `}abc"`
2636 class AEndStringExpr
2637 super AStringFormExpr
2640 # A superstring literal. eg `"a{x}b{y}c"`
2641 # Each part is modeled a sequence of expression. eg. `["a{, x, }b{, y, }c"]`
2642 class ASuperstringExpr
2645 # The list of the expressions of the superstring
2646 var n_exprs
= new ANodes[AExpr](self)
2649 # A simple parenthesis. eg `(x)`
2653 # The opening parenthesis
2654 var n_opar
: TOpar is writable, noinit
2656 # The inner expression
2657 var n_expr
: AExpr is writable, noinit
2659 # The closing parenthesis
2660 var n_cpar
: TCpar is writable, noinit
2663 # A cast, against a type or `not null`
2667 # The expression to cast
2668 var n_expr
: AExpr is writable, noinit
2671 var n_kwas
: TKwas is writable, noinit
2673 # The opening parenthesis
2674 var n_opar
: nullable TOpar = null is writable
2676 # The closing parenthesis
2677 var n_cpar
: nullable TCpar = null is writable
2680 # A type cast. eg `x.as(T)`
2684 # The target type to cast to
2685 var n_type
: AType is writable, noinit
2688 # A as-not-null cast. eg `x.as(not null)`
2689 class AAsNotnullExpr
2693 var n_kwnot
: TKwnot is writable, noinit
2695 # The `null` keyword
2696 var n_kwnull
: TKwnull is writable, noinit
2699 # A is-set check of old-style attributes. eg `isset x._a`
2700 class AIssetAttrExpr
2703 # The `isset` keyword
2704 var n_kwisset
: TKwisset is writable, noinit
2707 # An ellipsis notation used to pass an expression as it, in a vararg parameter
2711 # The passed expression
2712 var n_expr
: AExpr is writable, noinit
2715 var n_dotdotdot
: TDotdotdot is writable, noinit
2718 # An named notation used to pass an expression by name in a parameter
2722 # The name of the argument
2723 var n_id
: TId is writable, noinit
2726 var n_assign
: TAssign is writable, noinit
2728 # The passed expression
2729 var n_expr
: AExpr is writable, noinit
2732 # A list of expression separated with commas (arguments for instance)
2736 # The list of expressions
2737 var n_exprs
= new ANodes[AExpr](self)
2740 # A special expression that encapsulates a static type
2741 # Can only be found in special construction like arguments of annotations.
2745 # The encapsulated type
2746 var n_type
: AType is writable, noinit
2749 # A special expression that encapsulates a method identifier
2750 # Can only be found in special construction like arguments of annotations.
2755 var n_expr
: AExpr is writable, noinit
2757 # The encapsulated method identifier
2758 var n_id
: AMethid is writable, noinit
2761 # A special expression that encapsulate an annotation
2762 # Can only be found in special construction like arguments of annotations.
2764 # The encapsulated annotations are in `n_annotations`
2769 # A special expression to debug types
2770 class ADebugTypeExpr
2773 # The `debug` keyword
2774 var n_kwdebug
: TKwdebug is writable, noinit
2776 # The `type` keyword
2777 var n_kwtype
: TKwtype is writable, noinit
2779 # The expression to check
2780 var n_expr
: AExpr is writable, noinit
2783 var n_type
: AType is writable, noinit
2786 # A list of expression separated with commas (arguments for instance)
2787 abstract class AExprs
2790 # The list of expressions
2791 var n_exprs
= new ANodes[AExpr](self)
2794 # A simple list of expressions
2799 # A list of expressions enclosed in parentheses
2803 # The opening parenthesis
2804 var n_opar
: TOpar is writable, noinit
2806 # The closing parenthesis
2807 var n_cpar
: TCpar is writable, noinit
2810 # A list of expressions enclosed in brackets
2814 # The opening bracket
2815 var n_obra
: TObra is writable, noinit
2817 # The closing bracket
2818 var n_cbra
: TCbra is writable, noinit
2821 # A complex assignment operator. (`+=` and `-=`)
2822 abstract class AAssignOp
2825 # The combined assignment operator
2826 var n_op
: Token is writable, noinit
2828 # The name of the operator without the `=` (eg '+')
2829 fun operator
: String is abstract
2832 # A `+=` assignment operation
2836 redef fun operator
do return "+"
2839 # A `-=` assignment operation
2840 class AMinusAssignOp
2843 redef fun operator
do return "-"
2846 # A `*=` assignment operation
2850 redef fun operator
do return "*"
2853 # A `/=` assignment operation
2854 class ASlashAssignOp
2857 redef fun operator
do return "/"
2860 # A `%=` assignment operation
2861 class APercentAssignOp
2864 redef fun operator
do return "%"
2867 # A `**=` assignment operation
2868 class AStarstarAssignOp
2871 redef fun operator
do return "**"
2874 # A `|=` assignment operation
2878 redef fun operator
do return "|"
2881 # A `^=` assignment operation
2882 class ACaretAssignOp
2885 redef fun operator
do return "^"
2888 # A `&=` assignment operation
2892 redef fun operator
do return "&"
2895 # A `<<=` assignment operation
2899 redef fun operator
do return "<<"
2902 # A `>>=` assignment operation
2906 redef fun operator
do return ">>"
2909 # A possibly fully-qualified module identifier
2913 # The starting quad (`::`)
2914 var n_quad
: nullable TQuad = null is writable
2916 # The list of quad-separated package/group identifiers
2917 var n_path
= new ANodes[TId](self)
2919 # The final module identifier
2920 var n_id
: TId is writable, noinit
2923 # A language declaration for an extern block
2928 var n_kwin
: TKwin is writable, noinit
2931 var n_string
: TString is writable, noinit
2934 # An full extern block
2935 class AExternCodeBlock
2938 # The language declration
2939 var n_in_language
: nullable AInLanguage = null is writable
2941 # The block of extern code
2942 var n_extern_code_segment
: TExternCodeSegment is writable, noinit
2945 # A possible full method qualifier.
2949 # The starting quad (`::`)
2950 var n_quad
: nullable TQuad = null is writable
2952 # The list of quad-separated package/group/module identifiers
2953 var n_id
= new ANodes[TId](self)
2955 # A class identifier
2956 var n_classid
: nullable TClassid = null is writable
2959 # A documentation of a definition
2960 # It contains the block of comments just above the declaration
2964 # A list of lines of comment
2965 var n_comment
= new ANodes[TComment](self)
2968 # A group of annotation on a node
2970 # This same class is used for the 3 kind of annotations:
2972 # * *is* annotations. eg `module foo is bar`.
2973 # * *at* annotations. eg `foo@bar` or `foo@(bar,baz)`.
2974 # * *class* annotations, defined in classes.
2978 # The `is` keyword, for *is* annotations
2979 var n_kwis
: nullable TKwis = null is writable
2981 # The `@` symbol, for *at* annotations
2982 var n_at
: nullable TAt = null is writable
2984 # The opening parenthesis in *at* annotations
2985 var n_opar
: nullable TOpar = null is writable
2987 # The list of annotations
2988 var n_items
= new ANodes[AAnnotation](self)
2990 # The closing parenthesis in *at* annotations
2991 var n_cpar
: nullable TCpar = null is writable
2993 # The `end` keyword, for *is* annotations
2994 var n_kwend
: nullable TKwend = null is writable
2997 # A single annotation
3001 # The name of the annotation
3002 var n_atid
: AAtid is writable, noinit
3004 # The opening parenthesis of the arguments
3005 var n_opar
: nullable TOpar = null is writable
3007 # The list of arguments
3008 var n_args
= new ANodes[AExpr](self)
3010 # The closing parenthesis
3011 var n_cpar
: nullable TCpar = null is writable
3013 # The name of the annotation
3016 return n_atid
.n_id
.text
3020 # An annotation name
3021 abstract class AAtid
3024 # The identifier of the annotation.
3025 # Can be a TId of a keyword
3026 var n_id
: Token is writable, noinit
3029 # An annotation name based on an identifier
3034 # An annotation name based on the keyword `extern`
3039 # An annotation name based on the keyword `import`
3044 # An annotation name based on the keyword `abstract`
3045 class AKwabstractAtid
3049 # The root of the AST
3054 var n_base
: nullable AModule is writable
3056 # The end of file (or error) token
3057 var n_eof
: EOF is writable