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 can not 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` and `universal`
542 # The keyword `subset`
567 # The keyword `redef`
582 # The keyword `catch`
592 # The keyword `extern`
597 # The keyword `public`
602 # The keyword `protected`
607 # The keyword `private`
612 # The keyword `intrude`
632 # The keyword `while`
662 # The keyword `implies`
672 # The keyword `return`
677 # The keyword `continue`
682 # The keyword `break`
687 # The keyword `abort`
692 # The keyword `assert`
712 # The keyword `super`
727 # The keyword `false`
742 # The keyword `nullable`
747 # The keyword `isset`
752 # The keyword `label`
762 # The keyword `yield`
767 # The special keyword `__DEBUG__`
812 # A token associated with an operator (and other lookalike symbols)
813 abstract class TokenOperator
817 return "operator '{text}'"
1001 # A class (or formal type) identifier. They start with an uppercase.
1006 do return "type identifier '{text}'"
1010 # A standard identifier (variable, method...). They start with a lowercase.
1015 do return "identifier '{text}'"
1019 # An attribute identifier. They start with an underscore.
1024 do return "attribute '{text}'"
1028 # A token of a literal value (string, integer, etc).
1029 abstract class TokenLiteral
1033 do return "literal value '{text}'"
1042 # A literal floating point number
1047 # A literal character
1057 # The starting part of a super string (between `"` and `{`)
1062 # The middle part of a super string (between `}` and `{`)
1067 # The final part of a super string (between `}` and `"`)
1072 # A malformed string
1077 do return "malformed string {text}"
1086 do return "malformed character {text}"
1090 # A extern code block
1091 class TExternCodeSegment
1100 return "end of file"
1104 # A mark of an error
1108 # A lexical error (unexpected character)
1112 # A syntactic error (unexpected token)
1117 # The main node of a Nit source-file
1121 # The declaration part of the module
1122 var n_moduledecl
: nullable AModuledecl = null is writable
1124 # List of importation clauses
1125 var n_imports
= new ANodes[AImport](self)
1127 # List of extern blocks
1128 var n_extern_code_blocks
= new ANodes[AExternCodeBlock](self)
1130 # List of class definition (including top-level methods and the main)
1131 var n_classdefs
= new ANodes[AClassdef](self)
1134 # Abstract class for definition of entities
1135 abstract class ADefinition
1138 var n_doc
: nullable ADoc = null is writable
1140 # The `redef` keyword
1141 var n_kwredef
: nullable TKwredef = null is writable
1143 # The declared visibility
1144 var n_visibility
: nullable AVisibility = null is writable
1147 # The declaration of the module with the documentation, name, and annotations
1151 # The `module` keyword
1152 var n_kwmodule
: TKwmodule is writable, noinit
1154 # The declared module name
1155 var n_name
: AModuleName is writable, noinit
1158 # A import clause of a module
1159 abstract class AImport
1162 # The declared visibility
1163 var n_visibility
: AVisibility is writable, noinit
1165 # The `import` keyword
1166 var n_kwimport
: TKwimport is writable, noinit
1169 # A standard import clause. eg `import x`
1172 # The imported module name
1173 var n_name
: AModuleName is writable, noinit
1176 # The special import clause of the kernel module. eg `import end`
1179 # The `end` keyword, that indicate the root module
1180 var n_kwend
: TKwend is writable, noinit
1183 # A visibility modifier
1185 # The public visibility is an empty production (no keyword).
1187 # Note: even if some visibilities are only valid on some placse (for instance, no `protected` class or no `intrude` method)
1188 # the parser has no such a restriction, therefore the semantic phases has to check that the visibilities make sense.
1189 abstract class AVisibility
1193 # An implicit or explicit public visibility modifier
1194 class APublicVisibility
1196 # The `public` keyword, if any
1197 var n_kwpublic
: nullable TKwpublic = null is writable
1199 # An explicit private visibility modifier
1200 class APrivateVisibility
1202 # The `private` keyword
1203 var n_kwprivate
: TKwprivate is writable, noinit
1205 # An explicit protected visibility modifier
1206 class AProtectedVisibility
1208 # The `protected` keyword
1209 var n_kwprotected
: TKwprotected is writable, noinit
1211 # An explicit intrude visibility modifier
1212 class AIntrudeVisibility
1214 # The `intrude` keyword
1215 var n_kwintrude
: TKwintrude is writable, noinit
1218 # A class definition
1220 # While most definitions are `AStdClassdef`s,
1221 # there are 2 special cases of class definitions.
1222 abstract class AClassdef
1224 # All the declared properties (including the main method)
1225 var n_propdefs
= new ANodes[APropdef](self)
1228 # A standard class definition with a name, superclasses and properties
1233 # The class kind (interface, abstract class, etc.)
1234 var n_classkind
: AClasskind is writable, noinit
1236 # The name of the class
1237 var n_qid
: nullable AQclassid = null is writable
1240 var n_obra
: nullable TObra = null is writable
1242 # The list of formal parameter types
1243 var n_formaldefs
= new ANodes[AFormaldef](self)
1246 var n_cbra
: nullable TCbra = null is writable
1248 # The extern block code
1249 var n_extern_code_block
: nullable AExternCodeBlock = null is writable
1252 var n_kwend
: TKwend is writable, noinit
1254 fun n_superclasses
: Array[ASuperPropdef] do
1255 return [for d
in n_propdefs
do if d
isa ASuperPropdef then d
]
1258 redef fun hot_location
do return n_qid
.location
1261 # The implicit class definition of the implicit main method
1266 # The implicit class definition of the top-level methods
1271 # The modifier for the kind of class (abstract, interface, etc.)
1272 abstract class AClasskind
1276 # A default, or concrete class modifier (just `class`)
1277 class AConcreteClasskind
1280 # The `class` keyword.
1281 var n_kwclass
: TKwclass is writable, noinit
1284 # An abstract class modifier (`abstract class`)
1285 class AAbstractClasskind
1288 # The `abstract` keyword.
1289 var n_kwabstract
: TKwabstract is writable, noinit
1291 # The `class` keyword.
1292 var n_kwclass
: TKwclass is writable, noinit
1295 # An interface class modifier (`interface`)
1296 class AInterfaceClasskind
1299 # The `interface` keyword.
1300 var n_kwinterface
: TKwinterface is writable, noinit
1303 # An enum/universal class modifier (`enum class`)
1304 class AEnumClasskind
1307 # The `enum` keyword.
1308 var n_kwenum
: TKwenum is writable, noinit
1311 # An extern class modifier (`extern class`)
1312 class AExternClasskind
1315 # The `extern` keyword.
1316 var n_kwextern
: TKwextern is writable, noinit
1318 # The `class` keyword.
1319 var n_kwclass
: nullable TKwclass = null is writable
1322 class ASubsetClasskind
1325 # The `subset` keyword.
1326 var n_kwsubset
: TKwsubset is writable, noinit
1328 redef fun visit_all
(v
) do
1329 # TODO: Remove this redefinition once generated from the grammar.
1330 v
.enter_visit
(n_kwsubset
)
1334 # The definition of a formal generic parameter type. eg `X: Y`
1338 # The name of the parameter type
1339 var n_id
: TClassid is writable, noinit
1341 # The bound of the parameter type
1342 var n_type
: nullable AType = null is writable
1345 # The definition of a property
1346 abstract class APropdef
1350 # A definition of an attribute
1351 # For historical reason, old-syle and new-style attributes use the same `ANode` sub-class
1356 var n_kwvar
: TKwvar is writable, noinit
1358 # The identifier for a new-style attribute
1359 var n_id2
: TId is writable, noinit
1361 # The declared type of the attribute
1362 var n_type
: nullable AType = null is writable
1365 var n_assign
: nullable TAssign = null is writable
1367 # The initial value, if any (set with `=`)
1368 var n_expr
: nullable AExpr = null is writable
1371 var n_kwdo
: nullable TKwdo = null is writable
1373 # The initial value, if any (set with `do return`)
1374 var n_block
: nullable AExpr = null is writable
1377 var n_kwend
: nullable TKwend = null is writable
1379 redef fun hot_location
1381 return n_id2
.location
1385 # A definition of all kind of method (including constructors)
1389 # The `fun` keyword, if any
1390 var n_kwmeth
: nullable TKwmeth = null is writable
1392 # The `init` keyword, if any
1393 var n_kwinit
: nullable TKwinit = null is writable
1395 # The `isa` keyword, if any
1396 var n_kwisa
: nullable TKwisa = null is writable
1398 # The `new` keyword, if any
1399 var n_kwnew
: nullable TKwnew = null is writable
1401 # The name of the method, if any
1402 var n_methid
: nullable AMethid = null is writable
1404 # The signature of the method, if any
1405 var n_signature
: nullable ASignature = null is writable
1408 var n_kwdo
: nullable TKwdo = null is writable
1410 # The body (in Nit) of the method, if any
1411 var n_block
: nullable AExpr = null is writable
1414 var n_kwend
: nullable TKwend = null is writable
1416 # The list of declared callbacks (for extern methods)
1417 var n_extern_calls
: nullable AExternCalls = null is writable
1419 # The body (in extern code) of the method, if any
1420 var n_extern_code_block
: nullable AExternCodeBlock = null is writable
1422 redef fun hot_location
1424 if n_methid
!= null then
1425 return n_methid
.location
1426 else if n_kwinit
!= null then
1427 return n_kwinit
.location
1428 else if n_kwnew
!= null then
1429 return n_kwnew
.location
1436 # The implicit main method
1437 class AMainMethPropdef
1446 # A super-class. eg `super X`
1451 var n_kwsuper
: TKwsuper is writable, noinit
1453 # The super-class (indicated as a type)
1454 var n_type
: AType is writable, noinit
1458 # Declaration of callbacks for extern methods
1462 # The `import` keyword
1463 var n_kwimport
: TKwimport is writable, noinit
1465 # The list of declared callbacks
1466 var n_extern_calls
: ANodes[AExternCall] = new ANodes[AExternCall](self)
1469 # A single callback declaration
1470 abstract class AExternCall
1474 # A single callback declaration on a method
1475 abstract class APropExternCall
1479 # A single callback declaration on a method on the current receiver
1480 class ALocalPropExternCall
1481 super APropExternCall
1483 # The name of the called-back method
1484 var n_methid
: AMethid is writable, noinit
1487 # A single callback declaration on a method on an explicit receiver type.
1488 class AFullPropExternCall
1489 super APropExternCall
1491 # The type of the receiver of the called-back method
1492 var n_type
: AType is writable, noinit
1495 var n_dot
: nullable TDot = null is writable
1497 # The name of the called-back method
1498 var n_methid
: AMethid is writable, noinit
1501 # A single callback declaration on a method on a constructor
1502 class AInitPropExternCall
1503 super APropExternCall
1505 # The allocated type
1506 var n_type
: AType is writable, noinit
1509 # A single callback declaration on a `super` call
1510 class ASuperExternCall
1513 # The `super` keyword
1514 var n_kwsuper
: TKwsuper is writable, noinit
1517 # A single callback declaration on a cast
1518 abstract class ACastExternCall
1522 # A single callback declaration on a cast to a given type
1523 class ACastAsExternCall
1524 super ACastExternCall
1526 # The origin type of the cast
1527 var n_from_type
: AType is writable, noinit
1530 var n_dot
: nullable TDot = null is writable
1533 var n_kwas
: TKwas is writable, noinit
1535 # The destination of the cast
1536 var n_to_type
: AType is writable, noinit
1539 # A single callback declaration on a cast to a nullable type
1540 class AAsNullableExternCall
1541 super ACastExternCall
1543 # The origin type to cast as nullable
1544 var n_type
: AType is writable, noinit
1547 var n_kwas
: TKwas is writable, noinit
1549 # The `nullable` keyword
1550 var n_kwnullable
: TKwnullable is writable, noinit
1553 # A single callback declaration on a cast to a non-nullable type
1554 class AAsNotNullableExternCall
1555 super ACastExternCall
1557 # The destination type on a cast to not nullable
1558 var n_type
: AType is writable, noinit
1561 var n_kwas
: TKwas is writable, noinit
1564 var n_kwnot
: TKwnot is writable, noinit
1566 # The `nullable` keyword
1567 var n_kwnullable
: TKwnullable is writable, noinit
1570 # A definition of a virtual type
1574 # The `type` keyword
1575 var n_kwtype
: TKwtype is writable, noinit
1577 # The name of the virtual type
1578 var n_qid
: AQclassid is writable, noinit
1580 # The bound of the virtual type
1581 var n_type
: AType is writable, noinit
1584 # The identifier of a method in a method declaration.
1585 # There is a specific class because of operator and setters.
1586 abstract class AMethid
1590 # A method name with a simple identifier
1594 # The simple identifier
1595 var n_id
: TId is writable, noinit
1598 # A method name for an operator
1599 class AOperatorMethid
1602 # The associated operator symbol
1603 var n_op
: Token is writable, noinit
1607 super AOperatorMethid
1612 super AOperatorMethid
1617 super AOperatorMethid
1620 # A method name `**`
1621 class AStarstarMethid
1622 super AOperatorMethid
1627 super AOperatorMethid
1631 class APercentMethid
1632 super AOperatorMethid
1637 super AOperatorMethid
1642 super AOperatorMethid
1647 super AOperatorMethid
1652 super AOperatorMethid
1655 # A method name `==`
1657 super AOperatorMethid
1660 # A method name `!=`
1662 super AOperatorMethid
1665 # A method name `<=`
1667 super AOperatorMethid
1670 # A method name `>=`
1672 super AOperatorMethid
1677 super AOperatorMethid
1682 super AOperatorMethid
1685 # A method name `<<`
1687 super AOperatorMethid
1690 # A method name `>>`
1692 super AOperatorMethid
1695 # A method name `<=>`
1696 class AStarshipMethid
1697 super AOperatorMethid
1700 # A method name `[]`
1705 var n_obra
: TObra is writable, noinit
1708 var n_cbra
: TCbra is writable, noinit
1711 # A setter method name with a simple identifier (with a `=`)
1715 # The base identifier
1716 var n_id
: TId is writable, noinit
1719 var n_assign
: TAssign is writable, noinit
1722 # A method name `[]=`
1723 class ABraassignMethid
1727 var n_obra
: TObra is writable, noinit
1730 var n_cbra
: TCbra is writable, noinit
1733 var n_assign
: TAssign is writable, noinit
1736 # A potentially qualified simple identifier `foo::bar::baz`
1739 # The qualifier, if any
1740 var n_qualified
: nullable AQualified = null is writable
1742 # The final identifier
1743 var n_id
: TId is writable, noinit
1745 redef fun is_structural
do return true
1748 # A potentially qualified class identifier `foo::bar::Baz`
1751 # The qualifier, if any
1752 var n_qualified
: nullable AQualified = null is writable
1754 # The final identifier
1755 var n_id
: TClassid is writable, noinit
1757 redef fun is_structural
do return true
1760 # A signature in a method definition. eg `(x,y:X,z:Z):T`
1765 var n_opar
: nullable TOpar = null is writable
1767 # The list of parameters
1768 var n_params
= new ANodes[AParam](self)
1771 var n_cpar
: nullable TCpar = null is writable
1774 var n_type
: nullable AType = null is writable
1777 # A parameter definition in a signature. eg `x:X`
1781 # The name of the parameter
1782 var n_id
: TId is writable, noinit
1784 # The type of the parameter, if any
1785 var n_type
: nullable AType = null is writable
1787 # The `...` symbol to indicate varargs
1788 var n_dotdotdot
: nullable TDotdotdot = null is writable
1791 # A static type. eg `nullable X[Y]`
1794 # The `nullable` keyword
1795 var n_kwnullable
: nullable TKwnullable = null is writable
1797 # The name of the class or of the formal type
1798 var n_qid
: AQclassid is writable, noinit
1800 # The opening bracket
1801 var n_obra
: nullable TObra = null is writable
1803 # Type arguments for a generic type
1804 var n_types
= new ANodes[AType](self)
1806 # The closing bracket
1807 var n_cbra
: nullable TCbra = null is writable
1810 # A label at the end of a block or in a break/continue statement. eg `label x`
1814 # The `label` keyword
1815 var n_kwlabel
: TKwlabel is writable, noinit
1817 # The name of the label, if any
1818 var n_id
: nullable TId is writable, noinit
1821 # Expression and statements
1822 # From a AST point of view there is no distinction between statement and expressions (even if the parser has to distinguish them)
1823 abstract class AExpr
1827 # A sequence of `AExpr` (usually statements)
1828 # The last `AExpr` gives the value of the whole block
1832 # The list of statements in the bloc.
1833 # The last element is often considered as an expression that give the value of the whole block.
1834 var n_expr
= new ANodes[AExpr](self)
1837 var n_kwend
: nullable TKwend = null is writable
1840 # A declaration of a local variable. eg `var x: X = y`
1845 var n_kwvar
: nullable TKwvar = null is writable
1847 # The name of the local variable
1848 var n_id
: TId is writable, noinit
1850 # The declaration type of the local variable
1851 var n_type
: nullable AType = null is writable
1853 # The `=` symbol (for the initial value)
1854 var n_assign
: nullable TAssign = null is writable
1856 # The initial value, if any
1857 var n_expr
: nullable AExpr = null is writable
1860 # A `return` statement. eg `return x`
1864 # The `return` keyword
1865 var n_kwreturn
: nullable TKwreturn = null is writable
1868 # A `yield` statement. eg `yield x`
1872 # The `yield` keyword
1873 var n_kwyield
: nullable TKwyield = null is writable
1875 # The return value, if any
1876 var n_expr
: nullable AExpr = null is writable
1879 # Something that has a label.
1880 abstract class ALabelable
1883 # The associated label declatation
1884 var n_label
: nullable ALabel = null is writable
1887 # A `break` or a `continue`
1888 abstract class AEscapeExpr
1892 # The return value, if nay (unused currently)
1893 var n_expr
: nullable AExpr = null is writable
1896 # A `break` statement.
1900 # The `break` keyword
1901 var n_kwbreak
: TKwbreak is writable, noinit
1904 # An `abort` statement
1908 # The `abort` keyword
1909 var n_kwabort
: TKwabort is writable, noinit
1912 # A `continue` statement
1916 # The `continue` keyword.
1917 var n_kwcontinue
: nullable TKwcontinue = null is writable
1926 var n_kwdo
: TKwdo is writable, noinit
1928 # The list of statements of the `do`.
1929 var n_block
: nullable AExpr = null is writable
1931 # The `catch` keyword
1932 var n_kwcatch
: nullable TKwcatch = null is writable
1934 # The do catch block
1935 var n_catch
: nullable AExpr = null is writable
1943 var n_kwif
: TKwif is writable, noinit
1945 # The expression used as the condition of the `if`
1946 var n_expr
: AExpr is writable, noinit
1948 # The `then` keyword
1949 var n_kwthen
: TKwthen is writable, noinit
1951 # The body of the `then` part
1952 var n_then
: nullable AExpr = null is writable
1954 # The `else` keyword
1955 var n_kwelse
: nullable TKwelse = null is writable
1957 # The body of the `else` part
1958 var n_else
: nullable AExpr = null is writable
1961 # A `if` expression (ternary conditional). eg. `if true then 1 else 0`
1966 var n_kwif
: TKwif is writable, noinit
1968 # The expression used as the condition of the `if`
1969 var n_expr
: AExpr is writable, noinit
1971 # The `then` keyword
1972 var n_kwthen
: TKwthen is writable, noinit
1974 # The expression in the `then` part
1975 var n_then
: AExpr is writable, noinit
1977 # The `else` keyword
1978 var n_kwelse
: TKwelse is writable, noinit
1980 # The expression in the `else` part
1981 var n_else
: AExpr is writable, noinit
1984 # A `while` statement
1989 # The `while` keyword
1990 var n_kwwhile
: TKwwhile is writable, noinit
1992 # The expression used as the condition of the `while`
1993 var n_expr
: AExpr is writable, noinit
1996 var n_kwdo
: TKwdo is writable, noinit
1998 # The body of the loop
1999 var n_block
: nullable AExpr = null is writable
2002 # A `loop` statement
2007 # The `loop` keyword
2008 var n_kwloop
: TKwloop is writable, noinit
2010 # The body of the loop
2011 var n_block
: nullable AExpr = null is writable
2020 var n_kwfor
: TKwfor is writable, noinit
2022 # The list of groups to iterate
2023 var n_groups
= new ANodes[AForGroup](self)
2026 var n_kwdo
: TKwdo is writable, noinit
2028 # The body of the loop
2029 var n_block
: nullable AExpr = null is writable
2032 # A collection iterated by a for, its automatic variables and its implicit iterator.
2034 # Standard `for` iterate on a single collection.
2035 # Multiple `for` can iterate on more than one collection at once.
2039 # The list of name of the automatic variables
2040 var n_ids
= new ANodes[TId](self)
2043 var n_kwin
: TKwin is writable, noinit
2045 # The expression used as the collection to iterate on
2046 var n_expr
: AExpr is writable, noinit
2049 # A `with` statement
2054 # The `with` keyword
2055 var n_kwwith
: TKwwith is writable, noinit
2057 # The expression used to get the value to control
2058 var n_expr
: AExpr is writable, noinit
2061 var n_kwdo
: TKwdo is writable, noinit
2063 # The body of the loop
2064 var n_block
: nullable AExpr = null is writable
2067 # An `assert` statement
2071 # The `assert` keyword
2072 var n_kwassert
: TKwassert is writable, noinit
2074 # The name of the assert, if any
2075 var n_id
: nullable TId = null is writable
2077 # The expression used as the condition of the `assert`
2078 var n_expr
: AExpr is writable, noinit
2080 # The `else` keyword
2081 var n_kwelse
: nullable TKwelse = null is writable
2083 # The body to execute when the assert fails
2084 var n_else
: nullable AExpr = null is writable
2087 # Whatever is a simple assignment. eg `= something`
2088 abstract class AAssignFormExpr
2092 var n_assign
: TAssign is writable, noinit
2094 # The right-value to assign.
2095 var n_value
: AExpr is writable, noinit
2098 # Whatever is a combined assignment. eg `+= something`
2099 abstract class AReassignFormExpr
2102 # The combined operator (eg. `+=`)
2103 var n_assign_op
: AAssignOp is writable, noinit
2105 # The right-value to apply on the combined operator.
2106 var n_value
: AExpr is writable, noinit
2109 # A `once` expression. eg `once x`
2113 # The `once` keyword
2114 var n_kwonce
: TKwonce is writable, noinit
2116 # The expression to evaluate only one time
2117 var n_expr
: AExpr is writable, noinit
2120 # A polymorphic invocation of a method
2121 # The form of the invocation (name, arguments, etc.) are specific
2122 abstract class ASendExpr
2124 # The receiver of the method invocation
2125 var n_expr
: AExpr is writable, noinit
2128 # A binary operation on a method
2129 abstract class ABinopExpr
2133 var n_op
: Token is writable, noinit
2135 # The second operand of the operation
2136 # Note: the receiver (`n_expr`) is the first operand
2137 var n_expr2
: AExpr is writable, noinit
2139 # The name of the operator (eg '+')
2140 fun operator
: String is abstract
2143 # Something that is boolean expression
2144 abstract class ABoolExpr
2148 # Something that is binary boolean expression
2149 abstract class ABinBoolExpr
2152 # The first boolean operand
2153 var n_expr
: AExpr is writable, noinit
2156 var n_op
: Token is writable, noinit
2158 # The second boolean operand
2159 var n_expr2
: AExpr is writable, noinit
2167 # A `and` expression
2172 # A `or else` expression
2176 # The `else` keyword
2177 var n_kwelse
: TKwelse is writable, noinit
2180 # A `implies` expression
2185 # A `not` expression
2190 var n_kwnot
: TKwnot is writable, noinit
2192 # The boolean operand of the `not`
2193 var n_expr
: AExpr is writable, noinit
2196 # A `==` or a `!=` expression
2198 # Both have a similar effect on adaptive typing, so this class factorizes the common behavior.
2206 redef fun operator
do return "=="
2212 redef fun operator
do return "!="
2218 redef fun operator
do return "<"
2224 redef fun operator
do return "<="
2230 redef fun operator
do return "<<"
2236 redef fun operator
do return ">"
2242 redef fun operator
do return ">="
2248 redef fun operator
do return ">>"
2251 # A type-ckeck expression. eg `x isa T`
2255 # The expression to check
2256 var n_expr
: AExpr is writable, noinit
2259 var n_kwisa
: TKwisa is writable, noinit
2261 # The destination type to check to
2262 var n_type
: AType is writable, noinit
2268 redef fun operator
do return "+"
2274 redef fun operator
do return "-"
2277 # A `<=>` expression
2280 redef fun operator
do return "<=>"
2286 redef fun operator
do return "*"
2292 redef fun operator
do return "**"
2298 redef fun operator
do return "/"
2304 redef fun operator
do return "%"
2310 redef fun operator
do return "|"
2316 redef fun operator
do return "^"
2322 redef fun operator
do return "&"
2325 # A unary operation on a method
2326 abstract class AUnaryopExpr
2330 var n_op
: Token is writable, noinit
2332 # The name of the operator (eg '+')
2333 fun operator
: String is abstract
2336 # A unary minus expression. eg `-x`
2339 redef fun operator
do return "-"
2342 # A unary plus expression. eg `+x`
2345 redef fun operator
do return "+"
2348 # A unary `~` expression
2351 redef fun operator
do return "~"
2354 # An explicit instantiation. eg `new T`
2359 var n_kwnew
: TKwnew is writable, noinit
2361 # The `type` keyword
2362 var n_type
: AType is writable, noinit
2364 # The name of the named-constructor, if any
2365 var n_qid
: nullable AQid = null is writable
2367 # The arguments of the `new`
2368 var n_args
: AExprs is writable, noinit
2371 # Whatever is a old-style attribute access
2372 abstract class AAttrFormExpr
2375 # The receiver of the attribute
2376 var n_expr
: AExpr is writable, noinit
2378 # The name of the attribute
2379 var n_id
: TAttrid is writable, noinit
2383 # The read of an attribute. eg `x._a`
2388 # The assignment of an attribute. eg `x._a=y`
2389 class AAttrAssignExpr
2391 super AAssignFormExpr
2394 # Whatever looks-like a call with a standard method and any number of arguments.
2395 abstract class ACallFormExpr
2398 # The name of the method
2399 var n_qid
: AQid is writable, noinit
2401 # The arguments of the call
2402 var n_args
: AExprs is writable, noinit
2405 # A complex setter call (standard or brackets)
2406 abstract class ASendReassignFormExpr
2408 super AReassignFormExpr
2411 # A complex attribute assignment. eg `x._a+=y`
2412 class AAttrReassignExpr
2414 super AReassignFormExpr
2417 # A call with a standard method-name and any number of arguments. eg `x.m(y)`. OR just a simple id
2418 # 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`.
2419 # Semantic analysis have to transform them to instance of `AVarExpr`.
2424 # A setter call with a standard method-name and any number of arguments. eg `x.m(y)=z`. OR just a simple assignment.
2425 # 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`.
2426 # Semantic analysis have to transform them to instance of `AVarAssignExpr`.
2427 class ACallAssignExpr
2429 super AAssignFormExpr
2432 # 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.
2433 # 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`.
2434 # Semantic analysis have to transform them to instance of `AVarReassignExpr`.
2435 class ACallReassignExpr
2437 super ASendReassignFormExpr
2440 # A call to `super`. OR a call of a super-constructor
2444 # The qualifier part before the super (currenlty unused)
2445 var n_qualified
: nullable AQualified = null is writable
2447 # The `super` keyword
2448 var n_kwsuper
: TKwsuper is writable, noinit
2450 # The arguments of the super
2451 var n_args
: AExprs is writable, noinit
2454 # A call to the `init` constructor.
2455 # Note: because `init` is a keyword and not a `TId`, the explicit call to init cannot be a `ACallFormExpr`.
2459 # The `init` keyword
2460 var n_kwinit
: TKwinit is writable, noinit
2462 # The arguments of the init
2463 var n_args
: AExprs is writable, noinit
2466 # Whatever looks-like a call of the brackets `[]` operator.
2467 abstract class ABraFormExpr
2470 # The arguments inside the brackets
2471 var n_args
: AExprs is writable, noinit
2474 # A call of the brackets operator. eg `x[y,z]`
2479 # A setter call of the bracket operator. eg `x[y,z]=t`
2480 class ABraAssignExpr
2482 super AAssignFormExpr
2485 # Whatever is an access to a local variable
2486 abstract class AVarFormExpr
2489 # The name of the attribute
2490 var n_id
: TId is writable, noinit
2493 # A complex setter call of the bracket operator. eg `x[y,z]+=t`
2494 class ABraReassignExpr
2496 super ASendReassignFormExpr
2499 # A local variable read access.
2500 # The parser cannot instantiate them, see `ACallExpr`.
2505 # A local variable simple assignment access
2506 # The parser cannot instantiate them, see `ACallAssignExpr`.
2507 class AVarAssignExpr
2509 super AAssignFormExpr
2512 # A local variable complex assignment access
2513 # The parser cannot instantiate them, see `ACallReassignExpr`.
2514 class AVarReassignExpr
2516 super AReassignFormExpr
2519 # A literal range, open or closed
2520 abstract class ARangeExpr
2523 # The left (lower) element of the range
2524 var n_expr
: AExpr is writable, noinit
2527 var n_dotdot
: TDotdot is writable, noinit
2529 # The right (upper) element of the range
2530 var n_expr2
: AExpr is writable, noinit
2533 # A closed literal range. eg `[x..y]`
2537 # The opening bracket `[`
2538 var n_obra
: TObra is writable, noinit
2540 # The closing bracket `]`
2541 var n_cbra
: TCbra is writable, noinit
2544 # An open literal range. eg `[x..y[`
2548 # The opening bracket `[`
2549 var n_obra
: TObra is writable, noinit
2551 # The closing bracket `[` (because open range)
2552 var n_cbra
: TObra is writable, noinit
2555 # A literal array. eg. `[x,y,z]`
2559 # The opening bracket `[`
2560 var n_obra
: TObra is writable, noinit
2562 # The elements of the array
2563 var n_exprs
= new ANodes[AExpr](self)
2565 # The type of the element of the array (if any)
2566 var n_type
: nullable AType = null is writable
2568 # The closing bracket `]`
2569 var n_cbra
: TCbra is writable, noinit
2576 # The `self` keyword
2577 var n_kwself
: nullable TKwself = null is writable
2580 # When there is no explicit receiver, `self` is implicit
2581 class AImplicitSelfExpr
2585 # A `true` boolean literal constant
2589 # The `true` keyword
2590 var n_kwtrue
: TKwtrue is writable, noinit
2593 # A `false` boolean literal constant
2597 # The `false` keyword
2598 var n_kwfalse
: TKwfalse is writable, noinit
2601 # A `null` literal constant
2605 # The `null` keyword
2606 var n_kwnull
: TKwnull is writable, noinit
2609 # An integer literal
2614 var n_integer
: TInteger is writable, noinit
2622 var n_float
: TFloat is writable, noinit
2625 # A character literal
2629 # The character token
2630 var n_char
: TChar is writable, noinit
2634 abstract class AStringFormExpr
2638 var n_string
: Token is writable, noinit
2641 # A simple string. eg. `"abc"`
2643 super AStringFormExpr
2646 # The start of a superstring. eg `"abc{`
2647 class AStartStringExpr
2648 super AStringFormExpr
2651 # The middle of a superstring. eg `}abc{`
2652 class AMidStringExpr
2653 super AStringFormExpr
2656 # The end of a superstrng. eg `}abc"`
2657 class AEndStringExpr
2658 super AStringFormExpr
2661 # A superstring literal. eg `"a{x}b{y}c"`
2662 # Each part is modeled a sequence of expression. eg. `["a{, x, }b{, y, }c"]`
2663 class ASuperstringExpr
2666 # The list of the expressions of the superstring
2667 var n_exprs
= new ANodes[AExpr](self)
2670 # A simple parenthesis. eg `(x)`
2674 # The opening parenthesis
2675 var n_opar
: TOpar is writable, noinit
2677 # The inner expression
2678 var n_expr
: AExpr is writable, noinit
2680 # The closing parenthesis
2681 var n_cpar
: TCpar is writable, noinit
2684 # A cast, against a type or `not null`
2688 # The expression to cast
2689 var n_expr
: AExpr is writable, noinit
2692 var n_kwas
: TKwas is writable, noinit
2694 # The opening parenthesis
2695 var n_opar
: nullable TOpar = null is writable
2697 # The closing parenthesis
2698 var n_cpar
: nullable TCpar = null is writable
2701 # A type cast. eg `x.as(T)`
2705 # The target type to cast to
2706 var n_type
: AType is writable, noinit
2709 # A as-not-null cast. eg `x.as(not null)`
2710 class AAsNotnullExpr
2714 var n_kwnot
: TKwnot is writable, noinit
2716 # The `null` keyword
2717 var n_kwnull
: TKwnull is writable, noinit
2720 # A is-set check of old-style attributes. eg `isset x._a`
2721 class AIssetAttrExpr
2724 # The `isset` keyword
2725 var n_kwisset
: TKwisset is writable, noinit
2728 # An ellipsis notation used to pass an expression as it, in a vararg parameter
2732 # The passed expression
2733 var n_expr
: AExpr is writable, noinit
2736 var n_dotdotdot
: TDotdotdot is writable, noinit
2739 # An named notation used to pass an expression by name in a parameter
2743 # The name of the argument
2744 var n_id
: TId is writable, noinit
2747 var n_assign
: TAssign is writable, noinit
2749 # The passed expression
2750 var n_expr
: AExpr is writable, noinit
2753 # A list of expression separated with commas (arguments for instance)
2757 # The list of expressions
2758 var n_exprs
= new ANodes[AExpr](self)
2761 # A special expression that encapsulates a static type
2762 # Can only be found in special construction like arguments of annotations.
2766 # The encapsulated type
2767 var n_type
: AType is writable, noinit
2770 # A special expression that encapsulates a method identifier
2771 # Can only be found in special construction like arguments of annotations.
2776 var n_expr
: AExpr is writable, noinit
2778 # The encapsulated method identifier
2779 var n_id
: AMethid is writable, noinit
2782 # A special expression that encapsulate an annotation
2783 # Can only be found in special construction like arguments of annotations.
2785 # The encapsulated annotations are in `n_annotations`
2790 # A special expression to debug types
2791 class ADebugTypeExpr
2794 # The `debug` keyword
2795 var n_kwdebug
: TKwdebug is writable, noinit
2797 # The `type` keyword
2798 var n_kwtype
: TKwtype is writable, noinit
2800 # The expression to check
2801 var n_expr
: AExpr is writable, noinit
2804 var n_type
: AType is writable, noinit
2807 # A list of expression separated with commas (arguments for instance)
2808 abstract class AExprs
2811 # The list of expressions
2812 var n_exprs
= new ANodes[AExpr](self)
2815 # A simple list of expressions
2820 # A list of expressions enclosed in parentheses
2824 # The opening parenthesis
2825 var n_opar
: TOpar is writable, noinit
2827 # The closing parenthesis
2828 var n_cpar
: TCpar is writable, noinit
2831 # A list of expressions enclosed in brackets
2835 # The opening bracket
2836 var n_obra
: TObra is writable, noinit
2838 # The closing bracket
2839 var n_cbra
: TCbra is writable, noinit
2842 # A complex assignment operator. (`+=` and `-=`)
2843 abstract class AAssignOp
2846 # The combined assignment operator
2847 var n_op
: Token is writable, noinit
2849 # The name of the operator without the `=` (eg '+')
2850 fun operator
: String is abstract
2853 # A `+=` assignment operation
2857 redef fun operator
do return "+"
2860 # A `-=` assignment operation
2861 class AMinusAssignOp
2864 redef fun operator
do return "-"
2867 # A `*=` assignment operation
2871 redef fun operator
do return "*"
2874 # A `/=` assignment operation
2875 class ASlashAssignOp
2878 redef fun operator
do return "/"
2881 # A `%=` assignment operation
2882 class APercentAssignOp
2885 redef fun operator
do return "%"
2888 # A `**=` assignment operation
2889 class AStarstarAssignOp
2892 redef fun operator
do return "**"
2895 # A `|=` assignment operation
2899 redef fun operator
do return "|"
2902 # A `^=` assignment operation
2903 class ACaretAssignOp
2906 redef fun operator
do return "^"
2909 # A `&=` assignment operation
2913 redef fun operator
do return "&"
2916 # A `<<=` assignment operation
2920 redef fun operator
do return "<<"
2923 # A `>>=` assignment operation
2927 redef fun operator
do return ">>"
2930 # A possibly fully-qualified module identifier
2934 # The starting quad (`::`)
2935 var n_quad
: nullable TQuad = null is writable
2937 # The list of quad-separated package/group identifiers
2938 var n_path
= new ANodes[TId](self)
2940 # The final module identifier
2941 var n_id
: TId is writable, noinit
2944 # A language declaration for an extern block
2949 var n_kwin
: TKwin is writable, noinit
2952 var n_string
: TString is writable, noinit
2955 # An full extern block
2956 class AExternCodeBlock
2959 # The language declration
2960 var n_in_language
: nullable AInLanguage = null is writable
2962 # The block of extern code
2963 var n_extern_code_segment
: TExternCodeSegment is writable, noinit
2966 # A possible full method qualifier.
2970 # The starting quad (`::`)
2971 var n_quad
: nullable TQuad = null is writable
2973 # The list of quad-separated package/group/module identifiers
2974 var n_id
= new ANodes[TId](self)
2976 # A class identifier
2977 var n_classid
: nullable TClassid = null is writable
2980 # A documentation of a definition
2981 # It contains the block of comments just above the declaration
2985 # A list of lines of comment
2986 var n_comment
= new ANodes[TComment](self)
2989 # A group of annotation on a node
2991 # This same class is used for the 3 kind of annotations:
2993 # * *is* annotations. eg `module foo is bar`.
2994 # * *at* annotations. eg `foo@bar` or `foo@(bar,baz)`.
2995 # * *class* annotations, defined in classes.
2999 # The `is` keyword, for *is* annotations
3000 var n_kwis
: nullable TKwis = null is writable
3002 # The `@` symbol, for *at* annotations
3003 var n_at
: nullable TAt = null is writable
3005 # The opening parenthesis in *at* annotations
3006 var n_opar
: nullable TOpar = null is writable
3008 # The list of annotations
3009 var n_items
= new ANodes[AAnnotation](self)
3011 # The closing parenthesis in *at* annotations
3012 var n_cpar
: nullable TCpar = null is writable
3014 # The `end` keyword, for *is* annotations
3015 var n_kwend
: nullable TKwend = null is writable
3018 # A single annotation
3022 # The name of the annotation
3023 var n_atid
: AAtid is writable, noinit
3025 # The opening parenthesis of the arguments
3026 var n_opar
: nullable TOpar = null is writable
3028 # The list of arguments
3029 var n_args
= new ANodes[AExpr](self)
3031 # The closing parenthesis
3032 var n_cpar
: nullable TCpar = null is writable
3034 # The name of the annotation
3037 return n_atid
.n_id
.text
3041 # An annotation name
3042 abstract class AAtid
3045 # The identifier of the annotation.
3047 # Can be a TId or a keyword.
3048 var n_id
: Token is writable, noinit
3051 # An annotation name based on an identifier
3056 # An annotation name based on the keyword `extern`
3061 # An annotation name based on the keyword `import`
3066 # An annotation name based on the keyword `abstract`
3067 class AKwabstractAtid
3071 # The root of the AST
3076 var n_base
: nullable AModule is writable
3078 # The end of file (or error) token
3079 var n_eof
: EOF is writable