# AST nodes of the Nit language
# Was previously based on parser_abs.nit.
-package parser_nodes
+module parser_nodes
import location
# Root of the AST class-hierarchy
abstract class ANode
- var _location: nullable Location = null
-
# Location is set during AST building. Once built, location cannon be null.
# However, manual instantiated nodes may need more care.
- fun location: Location do return _location.as(not null)
+ var location: Location is writable, noinit
# The location of the important part of the node (identifier or whatever)
fun hot_location: Location do return location
# Display a message for the colored location of the node
fun debug(message: String)
do
- print "{hot_location} {self.class_name}: {message}\n{hot_location.colored_line("0;32")}"
+ sys.stderr.write "{hot_location} {self.class_name}: {message}\n{hot_location.colored_line("0;32")}\n"
end
# Parent of the node in the AST
- readable writable var _parent: nullable ANode = null
+ var parent: nullable ANode = null
+
+ # The topmost ancestor of the element
+ # This just apply `parent` until the first one
+ fun root: ANode
+ do
+ var res = self
+ loop
+ var p = res.parent
+ if p == null then return res
+ res = p
+ end
+ end
+
+ # The most specific common parent between `self` and `other`
+ # Return null if the two node are unrelated (distinct root)
+ fun common_parent(other: ANode): nullable ANode
+ do
+ # First, get the same depth
+ var s: nullable ANode = self
+ var o: nullable ANode = other
+ var d = s.depth - o.depth
+ while d > 0 do
+ s = s.parent
+ d -= 1
+ end
+ while d < 0 do
+ o = o.parent
+ d += 1
+ end
+ assert o.depth == s.depth
+ # Second, go up until same in found
+ while s != o do
+ s = s.parent
+ o = o.parent
+ end
+ return s
+ end
- # Protect form invalid instantiation of nodes
- private init do end
+ # Number of nodes between `self` and the `root` of the AST
+ # ENSURE `self == self.root implies result == 0 `
+ # ENSURE `self != self.root implies result == self.parent.depth + 1`
+ fun depth: Int
+ do
+ var n = self
+ var res = 0
+ loop
+ var p = n.parent
+ if p == null then return res
+ n = p
+ res += 1
+ end
+ end
# Replace a child with an other node in the AST
private fun replace_child(old_child: ANode, new_child: nullable ANode) is abstract
# ENDURE: parent == null
fun detach
do
- assert _parent != null
- _parent.replace_child(self, null)
- _parent = null
+ assert parent != null
+ parent.replace_child(self, null)
+ parent = null
end
# Replace itself with an other node in the AST
# ENSURE: parent == null
fun replace_with(node: ANode)
do
- assert _parent != null
- _parent.replace_child(self, node)
- _parent = null
+ assert parent != null
+ parent.replace_child(self, node)
+ parent = null
end
# Visit all nodes in order.
assert e.parent == parent
e.parent = null
end
+
+ # Used in parent contructor to fill elements
+ private fun unsafe_add_all(nodes: Collection[Object])
+ do
+ var parent = self.parent
+ for n in nodes do
+ assert n isa E
+ add n
+ n.parent = parent
+ end
+ end
+
+ private fun replace_child(old_child: ANode, new_child: nullable ANode): Bool
+ do
+ var parent = self.parent
+ for i in [0..length[ do
+ if self[i] == old_child then
+ if new_child != null then
+ assert new_child isa E
+ self[i] = new_child
+ new_child.parent = parent
+ else
+ self.remove_at(i)
+ end
+ return true
+ end
+ end
+ return false
+ end
+
+ private fun visit_all(v: Visitor)
+ do
+ for n in self do v.enter_visit(n)
+ end
end
# Ancestor of all tokens
fun text: String is abstract
fun text=(text: String) is abstract
+ # The previous token in the Lexer.
+ # May have disapeared in the AST
+ var prev_token: nullable Token = null
+
+ # The next token in the Lexer.
+ # May have disapeared in the AST
+ var next_token: nullable Token = null
+
+ # The verbatim blank text between `prev_token` and `self`
+ fun blank_before: String
+ do
+ if prev_token == null then return ""
+ var from = prev_token.location.pend+1
+ var to = location.pstart
+ return location.file.string.substring(from,to-from)
+ end
+
redef fun to_s: String do
return "'{text}'"
end
redef fun replace_child(old_child: ANode, new_child: nullable ANode) do end
end
+redef class SourceFile
+ # The first token parser by the lexer
+ # May have disapeared in the final AST
+ var first_token: nullable Token = null
+
+ # The first token parser by the lexer
+ # May have disapeared in the final AST
+ var last_token: nullable Token = null
+end
+
# Ancestor of all productions
# A production is a node without text but that usually has children.
abstract class Prod
super ANode
- fun location=(l: Location) do _location = l
-
# All the annotations attached directly to the node
- readable var _n_annotations: nullable AAnnotations = null
+ var n_annotations: nullable AAnnotations = null is writable
redef fun replace_with(n: ANode)
do
super
assert n isa Prod
- if n._location == null then n._location = _location
+ if not isset n._location and isset _location then n._location = _location
end
end
end
# The current visited node
- readable var _current_node: nullable ANode = null
+ var current_node: nullable ANode = null is writable
end
# Token of end of line (basically `\n`)
return "keyword '{text}'"
end
end
+class TKwpackage
+ super TokenKeyword
+end
class TKwmodule
super TokenKeyword
end
class TKwdo
super TokenKeyword
end
-class TKwreadable
- super TokenKeyword
-end
-class TKwwritable
- super TokenKeyword
-end
class TKwvar
super TokenKeyword
end
-class TKwintern
+class TKwextern
super TokenKeyword
end
-class TKwextern
+class TKwpublic
super TokenKeyword
end
class TKwprotected
class TKwor
super TokenKeyword
end
+class TKwimplies
+ super TokenKeyword
+end
class TKwnot
super TokenKeyword
end
super TokenOperator
end
class TDotdotdot
- super TokenOperator
+ super Token
end
class TDotdot
- super TokenOperator
+ super Token
end
class TDot
- super TokenOperator
+ super Token
end
class TPlus
super TokenOperator
class TStar
super TokenOperator
end
+class TStarstar
+ super TokenOperator
+end
class TSlash
super TokenOperator
end
class TNumber
super TokenLiteral
end
+class THexNumber
+ super TokenLiteral
+end
class TFloat
super TokenLiteral
end
super TokenLiteral
end
class TEndString
- super Token
+ super TokenLiteral
end
# A malformed string
class AModule
super Prod
- readable var _n_moduledecl: nullable AModuledecl = null
- readable var _n_imports: ANodes[AImport] = new ANodes[AImport](self)
- readable var _n_extern_code_blocks: ANodes[AExternCodeBlock] = new ANodes[AExternCodeBlock](self)
- readable var _n_classdefs: ANodes[AClassdef] = new ANodes[AClassdef](self)
+ var n_moduledecl: nullable AModuledecl = null is writable
+ var n_imports: ANodes[AImport] = new ANodes[AImport](self)
+ var n_extern_code_blocks: ANodes[AExternCodeBlock] = new ANodes[AExternCodeBlock](self)
+ var n_classdefs: ANodes[AClassdef] = new ANodes[AClassdef](self)
end
# The declaration of the module with the documentation, name, and annotations
class AModuledecl
super Prod
- readable var _n_doc: nullable ADoc = null
- readable var _n_kwmodule: TKwmodule
- readable var _n_name: AModuleName
+ var n_doc: nullable ADoc = null is writable
+ var n_kwredef: nullable TKwredef = null is writable
+ var n_visibility: AVisibility is writable, noinit
+ var n_kwmodule: TKwmodule is writable, noinit
+ var n_name: AModuleName is writable, noinit
end
# A import clause of a module
# A standard import clause. eg `import x`
class AStdImport
super AImport
- readable var _n_visibility: AVisibility
- readable var _n_kwimport: TKwimport
- readable var _n_name: AModuleName
+ var n_visibility: AVisibility is writable, noinit
+ var n_kwimport: TKwimport is writable, noinit
+ var n_name: AModuleName is writable, noinit
end
# The special import clause of the kernel module. eg `import end`
class ANoImport
super AImport
- readable var _n_visibility: AVisibility
- readable var _n_kwimport: TKwimport
- readable var _n_kwend: TKwend
+ var n_visibility: AVisibility is writable, noinit
+ var n_kwimport: TKwimport is writable, noinit
+ var n_kwend: TKwend is writable, noinit
end
# A visibility modifier
end
class APublicVisibility
super AVisibility
+ var n_kwpublic: nullable TKwpublic is writable
end
class APrivateVisibility
super AVisibility
- readable var _n_kwprivate: TKwprivate
+ var n_kwprivate: TKwprivate is writable, noinit
end
class AProtectedVisibility
super AVisibility
- readable var _n_kwprotected: TKwprotected
+ var n_kwprotected: TKwprotected is writable, noinit
end
class AIntrudeVisibility
super AVisibility
- readable var _n_kwintrude: TKwintrude
+ var n_kwintrude: TKwintrude is writable, noinit
end
# A class definition
# While most definition are `AStdClassdef`
# There is tow special case of class definition
-abstract class AClassdef super Prod
- readable var _n_propdefs: ANodes[APropdef] = new ANodes[APropdef](self)
+abstract class AClassdef
+ super Prod
+ var n_propdefs: ANodes[APropdef] = new ANodes[APropdef](self)
end
# A standard class definition with a name, superclasses and properties
class AStdClassdef
super AClassdef
- readable var _n_doc: nullable ADoc = null
- readable var _n_kwredef: nullable TKwredef = null
- readable var _n_visibility: AVisibility
- readable var _n_classkind: AClasskind
- readable var _n_id: nullable TClassid = null
- readable var _n_formaldefs: ANodes[AFormaldef] = new ANodes[AFormaldef](self)
- readable var _n_extern_code_block: nullable AExternCodeBlock = null
- readable var _n_superclasses: ANodes[ASuperclass] = new ANodes[ASuperclass](self)
- readable var _n_kwend: TKwend
+ var n_doc: nullable ADoc = null is writable
+ var n_kwredef: nullable TKwredef = null is writable
+ var n_visibility: AVisibility is writable, noinit
+ var n_classkind: AClasskind is writable, noinit
+ var n_id: nullable TClassid = null is writable
+ var n_formaldefs: ANodes[AFormaldef] = new ANodes[AFormaldef](self)
+ var n_extern_code_block: nullable AExternCodeBlock = null is writable
+ var n_superclasses: ANodes[ASuperclass] = new ANodes[ASuperclass](self)
+ var n_kwend: TKwend is writable, noinit
redef fun hot_location do return n_id.location
end
end
class AConcreteClasskind
super AClasskind
- readable var _n_kwclass: TKwclass
+ var n_kwclass: TKwclass is writable, noinit
end
class AAbstractClasskind
super AClasskind
- readable var _n_kwabstract: TKwabstract
- readable var _n_kwclass: TKwclass
+ var n_kwabstract: TKwabstract is writable, noinit
+ var n_kwclass: TKwclass is writable, noinit
end
class AInterfaceClasskind
super AClasskind
- readable var _n_kwinterface: TKwinterface
+ var n_kwinterface: TKwinterface is writable, noinit
end
class AEnumClasskind
super AClasskind
- readable var _n_kwenum: TKwenum
+ var n_kwenum: TKwenum is writable, noinit
end
class AExternClasskind
super AClasskind
- readable var _n_kwextern: TKwextern
- readable var _n_kwclass: nullable TKwclass = null
+ var n_kwextern: TKwextern is writable, noinit
+ var n_kwclass: nullable TKwclass = null is writable
end
# The definition of a formal generic parameter type. eg `X: Y`
class AFormaldef
super Prod
- readable var _n_id: TClassid
+ var n_id: TClassid is writable, noinit
# The bound of the parameter type
- readable var _n_type: nullable AType = null
+ var n_type: nullable AType = null is writable
end
# A super-class. eg `super X`
class ASuperclass
super Prod
- readable var _n_kwsuper: TKwsuper
- readable var _n_type: AType
+ var n_kwsuper: TKwsuper is writable, noinit
+ var n_type: AType is writable, noinit
end
# The definition of a property
abstract class APropdef
super Prod
- readable var _n_doc: nullable ADoc = null
+ var n_doc: nullable ADoc = null is writable
+ var n_kwredef: nullable TKwredef = null is writable
+ var n_visibility: nullable AVisibility = null is writable
end
# A definition of an attribute
# For historical reason, old-syle and new-style attributes use the same `ANode` sub-class
class AAttrPropdef
super APropdef
- readable var _n_kwredef: nullable TKwredef = null
- readable var _n_visibility: AVisibility
- readable var _n_kwvar: TKwvar
-
- # The identifier for an old-style attribute (null if new-style)
- readable var _n_id: nullable TAttrid
+ var n_kwvar: TKwvar is writable, noinit
# The identifier for a new-style attribute (null if old-style)
- readable var _n_id2: nullable TId
+ var n_id2: TId is writable, noinit
- readable var _n_type: nullable AType = null
- readable var _n_readable: nullable AAble = null
- readable var _n_writable: nullable AAble = null
+ var n_type: nullable AType = null is writable
# The initial value, if any
- readable var _n_expr: nullable AExpr = null
+ var n_expr: nullable AExpr = null is writable
redef fun hot_location
do
- if n_id != null then return n_id.location else return n_id2.location
+ return n_id2.location
end
end
# A definition of all kind of method (including constructors)
-abstract class AMethPropdef
+class AMethPropdef
super APropdef
- readable var _n_kwredef: nullable TKwredef = null
- readable var _n_visibility: nullable AVisibility
- readable var _n_methid: nullable AMethid = null
- readable var _n_signature: nullable ASignature
+ var n_kwmeth: nullable TKwmeth = null is writable
+ var n_kwinit: nullable TKwinit = null is writable
+ var n_kwnew: nullable TKwnew = null is writable
+ var n_methid: nullable AMethid = null is writable
+ var n_signature: nullable ASignature = null is writable
+ var n_block: nullable AExpr = null is writable
+ var n_extern_calls: nullable AExternCalls = null is writable
+ var n_extern_code_block: nullable AExternCodeBlock = null is writable
redef fun hot_location
do
if n_methid != null then
return n_methid.location
+ else if n_kwinit != null then
+ return n_kwinit.location
+ else if n_kwnew != null then
+ return n_kwnew.location
else
return location
end
end
end
-# A method marked abstract
-# *deferred* is a old synonynmous of *abstract* that comes from PRM, that comes from Eiffel.
-class ADeferredMethPropdef
- super AMethPropdef
- readable var _n_kwmeth: TKwmeth
-end
-
-# A method marked intern
-class AInternMethPropdef
- super AMethPropdef
- readable var _n_kwmeth: TKwmeth
-end
-
-# A method of a constructor marked extern
-abstract class AExternPropdef
- super AMethPropdef
- readable var _n_extern: nullable TString = null
- readable var _n_extern_calls: nullable AExternCalls = null
- readable var _n_extern_code_block: nullable AExternCodeBlock = null
-end
-
-# A method marked extern
-class AExternMethPropdef
- super AExternPropdef
- readable var _n_kwmeth: TKwmeth
-end
-
-# A method with a body
-class AConcreteMethPropdef
- super AMethPropdef
- readable var _n_kwmeth: nullable TKwmeth
- readable var _n_block: nullable AExpr = null
-end
-
-# A constructor
-abstract class AInitPropdef
- super AMethPropdef
-end
-
-# A constructor with a body
-class AConcreteInitPropdef
- super AConcreteMethPropdef
- super AInitPropdef
- readable var _n_kwinit: TKwinit
- redef fun hot_location do return n_kwinit.location
-end
-
-# A constructor marked extern (defined with the `new` keyword)
-class AExternInitPropdef
- super AExternPropdef
- super AInitPropdef
- readable var _n_kwnew: TKwnew
-end
-
# The implicit main method
class AMainMethPropdef
- super AConcreteMethPropdef
+ super AMethPropdef
end
# Declaration of callbacks for extern methods
class AExternCalls
super Prod
- readable var _n_kwimport: TKwimport
- readable var _n_extern_calls: ANodes[AExternCall] = new ANodes[AExternCall](self)
+ var n_kwimport: TKwimport is writable, noinit
+ var n_extern_calls: ANodes[AExternCall] = new ANodes[AExternCall](self)
end
abstract class AExternCall
super Prod
end
class ALocalPropExternCall
super APropExternCall
- readable var _n_methid: AMethid
+ var n_methid: AMethid is writable, noinit
end
class AFullPropExternCall
super APropExternCall
- readable var _n_classid: TClassid
- readable var _n_quad: nullable TQuad = null
- readable var _n_methid: AMethid
+ var n_type: AType is writable, noinit
+ var n_dot: nullable TDot = null is writable
+ var n_methid: AMethid is writable, noinit
end
class AInitPropExternCall
super APropExternCall
- readable var _n_classid: TClassid
+ var n_type: AType is writable, noinit
end
class ASuperExternCall
super AExternCall
- readable var _n_kwsuper: TKwsuper
+ var n_kwsuper: TKwsuper is writable, noinit
end
abstract class ACastExternCall
super AExternCall
end
class ACastAsExternCall
super ACastExternCall
- readable var _n_from_type: AType
- readable var _n_kwas: TKwas
- readable var _n_to_type: AType
+ var n_from_type: AType is writable, noinit
+ var n_dot: nullable TDot = null is writable
+ var n_kwas: TKwas is writable, noinit
+ var n_to_type: AType is writable, noinit
end
class AAsNullableExternCall
super ACastExternCall
- readable var _n_type: AType
- readable var _n_kwas: TKwas
- readable var _n_kwnullable: TKwnullable
+ var n_type: AType is writable, noinit
+ var n_kwas: TKwas is writable, noinit
+ var n_kwnullable: TKwnullable is writable, noinit
end
class AAsNotNullableExternCall
super ACastExternCall
- readable var _n_type: AType
- readable var _n_kwas: TKwas
- readable var _n_kwnot: TKwnot
- readable var _n_kwnullable: TKwnullable
+ var n_type: AType is writable, noinit
+ var n_kwas: TKwas is writable, noinit
+ var n_kwnot: TKwnot is writable, noinit
+ var n_kwnullable: TKwnullable is writable, noinit
end
# A definition of a virtual type
class ATypePropdef
super APropdef
- readable var _n_kwredef: nullable TKwredef = null
- readable var _n_visibility: AVisibility
- readable var _n_kwtype: TKwtype
- readable var _n_id: TClassid
- readable var _n_type: AType
-end
-
-# A `writable` or `readable` modifier
-abstract class AAble
- super Prod
- readable var _n_visibility: nullable AVisibility = null
- readable var _n_kwredef: nullable TKwredef = null
-end
-
-# A `readable` modifier
-class AReadAble
- super AAble
- readable var _n_kwreadable: TKwreadable
-end
-
-# A `writable` modifier
-class AWriteAble
- super AAble
- readable var _n_kwwritable: TKwwritable
+ var n_kwtype: TKwtype is writable, noinit
+ var n_id: TClassid is writable, noinit
+ var n_type: AType is writable, noinit
end
# The identifier of a method in a method declaration.
end
class AIdMethid
super AMethid
- readable var _n_id: TId
+ var n_id: TId is writable, noinit
end
class APlusMethid
super AMethid
- readable var _n_plus: TPlus
+ var n_plus: TPlus is writable, noinit
end
class AMinusMethid
super AMethid
- readable var _n_minus: TMinus
+ var n_minus: TMinus is writable, noinit
end
class AStarMethid
super AMethid
- readable var _n_star: TStar
+ var n_star: TStar is writable, noinit
+end
+class AStarstarMethid
+ super AMethid
+ var n_starstar: TStarstar is writable, noinit
end
class ASlashMethid
super AMethid
- readable var _n_slash: TSlash
+ var n_slash: TSlash is writable, noinit
end
class APercentMethid
super AMethid
- readable var _n_percent: TPercent
+ var n_percent: TPercent is writable, noinit
end
class AEqMethid
super AMethid
- readable var _n_eq: TEq
+ var n_eq: TEq is writable, noinit
end
class ANeMethid
super AMethid
- readable var _n_ne: TNe
+ var n_ne: TNe is writable, noinit
end
class ALeMethid
super AMethid
- readable var _n_le: TLe
+ var n_le: TLe is writable, noinit
end
class AGeMethid
super AMethid
- readable var _n_ge: TGe
+ var n_ge: TGe is writable, noinit
end
class ALtMethid
super AMethid
- readable var _n_lt: TLt
+ var n_lt: TLt is writable, noinit
end
class AGtMethid
super AMethid
- readable var _n_gt: TGt
+ var n_gt: TGt is writable, noinit
end
class ALlMethid
super AMethid
- readable writable var _n_ll: TLl
+ var n_ll: TLl is writable, noinit
end
class AGgMethid
super AMethid
- readable writable var _n_gg: TGg
+ var n_gg: TGg is writable, noinit
end
class ABraMethid
super AMethid
- readable var _n_obra: TObra
- readable var _n_cbra: TCbra
+ var n_obra: TObra is writable, noinit
+ var n_cbra: TCbra is writable, noinit
end
class AStarshipMethid
super AMethid
- readable var _n_starship: TStarship
+ var n_starship: TStarship is writable, noinit
end
class AAssignMethid
super AMethid
- readable var _n_id: TId
- readable var _n_assign: TAssign
+ var n_id: TId is writable, noinit
+ var n_assign: TAssign is writable, noinit
end
class ABraassignMethid
super AMethid
- readable var _n_obra: TObra
- readable var _n_cbra: TCbra
- readable var _n_assign: TAssign
+ var n_obra: TObra is writable, noinit
+ var n_cbra: TCbra is writable, noinit
+ var n_assign: TAssign is writable, noinit
end
# A signature in a method definition. eg `(x,y:X,z:Z):T`
class ASignature
super Prod
- readable var _n_opar: nullable TOpar = null
- readable var _n_params: ANodes[AParam] = new ANodes[AParam](self)
- readable var _n_cpar: nullable TCpar = null
- readable var _n_type: nullable AType = null
- readable var _n_closure_decls: ANodes[AClosureDecl] = new ANodes[AClosureDecl](self)
+ var n_opar: nullable TOpar = null is writable
+ var n_params: ANodes[AParam] = new ANodes[AParam](self)
+ var n_cpar: nullable TCpar = null is writable
+ var n_type: nullable AType = null is writable
end
# A parameter definition in a signature. eg `x:X`
class AParam
super Prod
- readable var _n_id: TId
- readable var _n_type: nullable AType = null
- readable var _n_dotdotdot: nullable TDotdotdot = null
-end
-
-class AClosureDecl
- super Prod
- readable var _n_kwbreak: nullable TKwbreak = null
- readable var _n_bang: TBang
- readable var _n_id: TId
- readable var _n_signature: ASignature
- readable var _n_expr: nullable AExpr = null
+ var n_id: TId is writable, noinit
+ var n_type: nullable AType = null is writable
+ var n_dotdotdot: nullable TDotdotdot = null is writable
end
# A static type. eg `nullable X[Y]`
class AType
super Prod
- readable var _n_kwnullable: nullable TKwnullable = null
+ var n_kwnullable: nullable TKwnullable = null is writable
# The name of the class or of the formal type
- readable var _n_id: TClassid
+ var n_id: TClassid is writable, noinit
# Type arguments for a generic type
- readable var _n_types: ANodes[AType] = new ANodes[AType](self)
+ var n_types: ANodes[AType] = new ANodes[AType](self)
end
# A label at the end of a block or in a break/continue statement. eg `label x`
class ALabel
super Prod
- readable var _n_kwlabel: TKwlabel
- readable var _n_id: TId
+ var n_kwlabel: TKwlabel is writable, noinit
+ var n_id: nullable TId is writable
end
# Expression and statements
# The last AExpr gives the value of the whole block
class ABlockExpr
super AExpr
- readable var _n_expr: ANodes[AExpr] = new ANodes[AExpr](self)
- readable var _n_kwend: nullable TKwend = null
+ var n_expr: ANodes[AExpr] = new ANodes[AExpr](self)
+ var n_kwend: nullable TKwend = null is writable
end
# A declaration of a local variable. eg `var x: X = y`
class AVardeclExpr
super AExpr
- readable var _n_kwvar: TKwvar
- readable var _n_id: TId
- readable var _n_type: nullable AType = null
- readable var _n_assign: nullable TAssign = null
+ var n_kwvar: TKwvar is writable, noinit
+ var n_id: TId is writable, noinit
+ var n_type: nullable AType = null is writable
+ var n_assign: nullable TAssign = null is writable
# The initial value, if any
- readable var _n_expr: nullable AExpr = null
+ var n_expr: nullable AExpr = null is writable
end
# A `return` statement. eg `return x`
class AReturnExpr
super AExpr
- readable var _n_kwreturn: nullable TKwreturn = null
- readable var _n_expr: nullable AExpr = null
+ var n_kwreturn: nullable TKwreturn = null is writable
+ var n_expr: nullable AExpr = null is writable
end
# Something that has a label.
abstract class ALabelable
super Prod
- readable var _n_label: nullable ALabel = null
+ var n_label: nullable ALabel = null is writable
end
# A `break` statement.
class ABreakExpr
super AExpr
super ALabelable
- readable var _n_kwbreak: TKwbreak
- readable var _n_expr: nullable AExpr = null
+ var n_kwbreak: TKwbreak is writable, noinit
+ var n_expr: nullable AExpr = null is writable
end
# An `abort` statement
class AAbortExpr
super AExpr
- readable var _n_kwabort: TKwabort
+ var n_kwabort: TKwabort is writable, noinit
end
# A `continue` statement
class AContinueExpr
super AExpr
super ALabelable
- readable var _n_kwcontinue: nullable TKwcontinue = null
- readable var _n_expr: nullable AExpr = null
+ var n_kwcontinue: nullable TKwcontinue = null is writable
+ var n_expr: nullable AExpr = null is writable
end
# A `do` statement
class ADoExpr
super AExpr
super ALabelable
- readable var _n_kwdo: TKwdo
- readable var _n_block: nullable AExpr = null
+ var n_kwdo: TKwdo is writable, noinit
+ var n_block: nullable AExpr = null is writable
end
# A `if` statement
class AIfExpr
super AExpr
- readable var _n_kwif: TKwif
- readable var _n_expr: AExpr
- readable var _n_then: nullable AExpr = null
- readable var _n_else: nullable AExpr = null
+ var n_kwif: TKwif is writable, noinit
+ var n_expr: AExpr is writable, noinit
+ var n_then: nullable AExpr = null is writable
+ var n_else: nullable AExpr = null is writable
end
# A `if` expression
class AIfexprExpr
super AExpr
- readable var _n_kwif: TKwif
- readable var _n_expr: AExpr
- readable var _n_kwthen: TKwthen
- readable var _n_then: AExpr
- readable var _n_kwelse: TKwelse
- readable var _n_else: AExpr
+ var n_kwif: TKwif is writable, noinit
+ var n_expr: AExpr is writable, noinit
+ var n_kwthen: TKwthen is writable, noinit
+ var n_then: AExpr is writable, noinit
+ var n_kwelse: TKwelse is writable, noinit
+ var n_else: AExpr is writable, noinit
end
# A `while` statement
class AWhileExpr
super AExpr
super ALabelable
- readable var _n_kwwhile: TKwwhile
- readable var _n_expr: AExpr
- readable var _n_kwdo: TKwdo
- readable var _n_block: nullable AExpr = null
+ var n_kwwhile: TKwwhile is writable, noinit
+ var n_expr: AExpr is writable, noinit
+ var n_kwdo: TKwdo is writable, noinit
+ var n_block: nullable AExpr = null is writable
end
# A `loop` statement
class ALoopExpr
super AExpr
super ALabelable
- readable var _n_kwloop: TKwloop
- readable var _n_block: nullable AExpr = null
+ var n_kwloop: TKwloop is writable, noinit
+ var n_block: nullable AExpr = null is writable
end
# A `for` statement
class AForExpr
super AExpr
super ALabelable
- readable var _n_kwfor: TKwfor
- readable var _n_ids: ANodes[TId] = new ANodes[TId](self)
- readable var _n_expr: AExpr
- readable var _n_kwdo: TKwdo
- readable var _n_block: nullable AExpr = null
+ var n_kwfor: TKwfor is writable, noinit
+ var n_ids: ANodes[TId] = new ANodes[TId](self)
+ var n_expr: AExpr is writable, noinit
+ var n_kwdo: TKwdo is writable, noinit
+ var n_block: nullable AExpr = null is writable
end
# An `assert` statement
class AAssertExpr
super AExpr
- readable var _n_kwassert: TKwassert
- readable var _n_id: nullable TId = null
- readable var _n_expr: AExpr
- readable var _n_else: nullable AExpr = null
+ var n_kwassert: TKwassert is writable, noinit
+ var n_id: nullable TId = null is writable
+ var n_expr: AExpr is writable, noinit
+ var n_else: nullable AExpr = null is writable
end
# Whatever is a simple assignment. eg `= something`
abstract class AAssignFormExpr
super AExpr
- readable var _n_assign: TAssign
- readable var _n_value: AExpr
+ var n_assign: TAssign is writable, noinit
+ var n_value: AExpr is writable, noinit
end
# Whatever is a combined assignment. eg `+= something`
abstract class AReassignFormExpr
super AExpr
- readable var _n_assign_op: AAssignOp
- readable var _n_value: AExpr
+ var n_assign_op: AAssignOp is writable, noinit
+ var n_value: AExpr is writable, noinit
end
# A `once` expression. eg `once x`
class AOnceExpr
super AProxyExpr
- readable var _n_kwonce: TKwonce
+ var n_kwonce: TKwonce is writable, noinit
end
# A polymorphic invocation of a method
abstract class ASendExpr
super AExpr
# The receiver of the method invocation
- readable var _n_expr: AExpr
- readable var _n_closure_defs: ANodes[AClosureDef] = new ANodes[AClosureDef](self)
+ var n_expr: AExpr is writable, noinit
end
# A binary operation on a method
super ASendExpr
# The second operand of the operation
# Note: the receiver (`n_expr`) is the first operand
- readable var _n_expr2: AExpr
+ var n_expr2: AExpr is writable, noinit
end
# Something that is boolean expression
# A `or` expression
class AOrExpr
super ABoolExpr
- readable var _n_expr: AExpr
- readable var _n_expr2: AExpr
+ var n_expr: AExpr is writable, noinit
+ var n_expr2: AExpr is writable, noinit
end
# A `and` expression
class AAndExpr
super ABoolExpr
- readable var _n_expr: AExpr
- readable var _n_expr2: AExpr
+ var n_expr: AExpr is writable, noinit
+ var n_expr2: AExpr is writable, noinit
end
# A `or else` expression
class AOrElseExpr
super ABoolExpr
- readable var _n_expr: AExpr
- readable var _n_expr2: AExpr
+ var n_expr: AExpr is writable, noinit
+ var n_expr2: AExpr is writable, noinit
+end
+
+# A `implies` expression
+class AImpliesExpr
+ super ABoolExpr
+ var n_expr: AExpr is writable, noinit
+ var n_expr2: AExpr is writable, noinit
end
# A `not` expression
class ANotExpr
super ABoolExpr
- readable var _n_kwnot: TKwnot
- readable var _n_expr: AExpr
+ var n_kwnot: TKwnot is writable, noinit
+ var n_expr: AExpr is writable, noinit
end
# A `==` expression
super ABinopExpr
end
-# A `is` expression
-class AEeExpr
- super ABoolExpr
- readable var _n_expr: AExpr
- readable var _n_expr2: AExpr
-end
-
# A `!=` expression
class ANeExpr
super ABinopExpr
# A type-ckeck expression. eg `x isa T`
class AIsaExpr
super ABoolExpr
- readable var _n_expr: AExpr
- readable var _n_type: AType
+ var n_expr: AExpr is writable, noinit
+ var n_type: AType is writable, noinit
end
# A `+` expression
super ABinopExpr
end
+# A `**` expression
+class AStarstarExpr
+ super ABinopExpr
+end
+
# A `/` expression
class ASlashExpr
super ABinopExpr
# A unary minus expression. eg `-x`
class AUminusExpr
super ASendExpr
- readable var _n_minus: TMinus
+ var n_minus: TMinus is writable, noinit
end
# An explicit instantiation. eg `new T`
class ANewExpr
super AExpr
- readable var _n_kwnew: TKwnew
- readable var _n_type: AType
+ var n_kwnew: TKwnew is writable, noinit
+ var n_type: AType is writable, noinit
# The name of the named-constructor, if any
- readable var _n_id: nullable TId = null
- readable var _n_args: AExprs
+ var n_id: nullable TId = null is writable
+ var n_args: AExprs is writable, noinit
end
# Whatever is a old-style attribute access
super AExpr
# The receiver of the attribute
- readable var _n_expr: AExpr
+ var n_expr: AExpr is writable, noinit
# The name of the attribute
- readable var _n_id: TAttrid
+ var n_id: TAttrid is writable, noinit
+
end
# The read of an attribute. eg `x._a`
super ASendExpr
# The name of the method
- readable var _n_id: TId
+ var n_id: TId is writable, noinit
# The arguments of the call
- readable var _n_args: AExprs
+ var n_args: AExprs is writable, noinit
end
# A complex setter call (standard or brackets)
end
# A call with a standard method-name and any number of arguments. eg `x.m(y)`. OR just a simple id
-# 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.
+# 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`.
# Semantic analysis have to transform them to instance of `AVarExpr`.
class ACallExpr
super ACallFormExpr
end
# A setter call with a standard method-name and any number of arguments. eg `x.m(y)=z`. OR just a simple assignment.
-# 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.
+# 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`.
# Semantic analysis have to transform them to instance of `AVarAssignExpr`.
class ACallAssignExpr
super ACallFormExpr
end
# 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.
-# Note: because the parser cannot distinguish a variable write with a compex setter call with an implicit receiver and no arguments. it always returns a ACallReassignExpr.
+# Note: because the parser cannot distinguish a variable write with a compex setter call with an implicit receiver and no arguments, it always returns a `ACallReassignExpr`.
# Semantic analysis have to transform them to instance of `AVarReassignExpr`.
class ACallReassignExpr
super ACallFormExpr
# A call to `super`. OR a call of a super-constructor
class ASuperExpr
super AExpr
- readable var _n_qualified: nullable AQualified = null
- readable var _n_kwsuper: TKwsuper
- readable var _n_args: AExprs
+ var n_qualified: nullable AQualified = null is writable
+ var n_kwsuper: TKwsuper is writable, noinit
+ var n_args: AExprs is writable, noinit
end
# A call to the `init` constructor.
-# Note: because `init` is a keyword and not a `TId`, the explicit call to init cannot be a ACallFormExpr
+# Note: because `init` is a keyword and not a `TId`, the explicit call to init cannot be a ACallFormExpr.
class AInitExpr
super ASendExpr
- readable var _n_kwinit: TKwinit
- readable var _n_args: AExprs
+ var n_kwinit: TKwinit is writable, noinit
+ var n_args: AExprs is writable, noinit
end
# Whatever looks-like a call of the brackets `[]` operator.
abstract class ABraFormExpr
super ASendExpr
- readable var _n_args: AExprs
+ var n_args: AExprs is writable, noinit
end
# A call of the brackets operator. eg `x[y,z]`
# Whatever is an access to a local variable
abstract class AVarFormExpr
super AExpr
- readable var _n_id: TId
+ var n_id: TId is writable, noinit
end
# A complex setter call of the bracket operator. eg `x[y,z]+=t`
super ASendReassignFormExpr
end
-class AClosureCallExpr
- super AExpr
- readable var _n_id: TId
- readable var _n_args: AExprs
- readable var _n_closure_defs: ANodes[AClosureDef] = new ANodes[AClosureDef](self)
-end
-
# A local variable read access.
# The parser cannot instantiate them, see `ACallExpr`.
class AVarExpr
end
# A local variable simple assigment access
-# The parser cannot instantiate them, see `ACallAssingExpr`.
+# The parser cannot instantiate them, see `ACallAssignExpr`.
class AVarAssignExpr
super AVarFormExpr
super AAssignFormExpr
end
# A local variable complex assignment access
-# The parser cannot instantiate them, see `ACallReassingExpr`.
+# The parser cannot instantiate them, see `ACallReassignExpr`.
class AVarReassignExpr
super AVarFormExpr
super AReassignFormExpr
# A literal range, open or closed
abstract class ARangeExpr
super AExpr
- readable var _n_expr: AExpr
- readable var _n_expr2: AExpr
+ var n_expr: AExpr is writable, noinit
+ var n_expr2: AExpr is writable, noinit
end
# A closed literal range. eg `[x..y]`
class ACrangeExpr
super ARangeExpr
- readable var _n_obra: TObra
- readable var _n_cbra: TCbra
+ var n_obra: TObra is writable, noinit
+ var n_cbra: TCbra is writable, noinit
end
# An open literal range. eg `[x..y[`
class AOrangeExpr
super ARangeExpr
- readable var _n_obra: TObra
- readable var _n_cbra: TObra
+ var n_obra: TObra is writable, noinit
+ var n_cbra: TObra is writable, noinit
end
# A literal array. eg. `[x,y,z]`
class AArrayExpr
super AExpr
- readable var _n_exprs: AExprs
+ var n_obra: TObra is writable, noinit
+ var n_exprs: AExprs is writable, noinit
+ var n_type: nullable AType = null is writable
+ var n_cbra: TCbra is writable, noinit
end
# A read of `self`
class ASelfExpr
super AExpr
- readable var _n_kwself: nullable TKwself
+ var n_kwself: nullable TKwself is writable
end
# When there is no explicit receiver, `self` is implicit
# A `true` boolean literal constant
class ATrueExpr
super ABoolExpr
- readable var _n_kwtrue: TKwtrue
+ var n_kwtrue: TKwtrue is writable, noinit
end
# A `false` boolean literal constant
class AFalseExpr
super ABoolExpr
- readable var _n_kwfalse: TKwfalse
+ var n_kwfalse: TKwfalse is writable, noinit
end
# A `null` literal constant
class ANullExpr
super AExpr
- readable var _n_kwnull: TKwnull
+ var n_kwnull: TKwnull is writable, noinit
end
# An integer literal
class AIntExpr
super AExpr
- readable var _n_number: TNumber
+end
+# An integer literal in decimal format
+class ADecIntExpr
+ super AIntExpr
+ var n_number: TNumber is writable, noinit
+end
+# An integer literal in hexadecimal format
+class AHexIntExpr
+ super AIntExpr
+ var n_hex_number: THexNumber is writable, noinit
end
# A float literal
class AFloatExpr
super AExpr
- readable var _n_float: TFloat
+ var n_float: TFloat is writable, noinit
end
# A character literal
class ACharExpr
super AExpr
- readable var _n_char: TChar
+ var n_char: TChar is writable, noinit
end
# A string literal
abstract class AStringFormExpr
super AExpr
- readable var _n_string: Token
+ var n_string: Token is writable, noinit
end
# A simple string. eg. `"abc"`
super AStringFormExpr
end
-# A superstring literal. eg "a{x}b{y}c"
-# Each part is modelized a sequence of expression. eg. ["a{, x, }b{, y, }c"]
+# A superstring literal. eg `"a{x}b{y}c"`
+# Each part is modelized a sequence of expression. eg. `["a{, x, }b{, y, }c"]`
class ASuperstringExpr
super AExpr
- readable var _n_exprs: ANodes[AExpr] = new ANodes[AExpr](self)
+ var n_exprs: ANodes[AExpr] = new ANodes[AExpr](self)
end
# A simple parenthesis. eg `(x)`
class AParExpr
super AProxyExpr
- readable var _n_opar: TOpar
- readable var _n_cpar: TCpar
+ var n_opar: TOpar is writable, noinit
+ var n_cpar: TCpar is writable, noinit
end
# Whatevej just contains (and mimic) an other expression
abstract class AProxyExpr
super AExpr
- readable var _n_expr: AExpr
+ var n_expr: AExpr is writable, noinit
end
# A type cast. eg `x.as(T)`
class AAsCastExpr
super AExpr
- readable var _n_expr: AExpr
- readable var _n_kwas: TKwas
- readable var _n_opar: TOpar
- readable var _n_type: AType
- readable var _n_cpar: TCpar
+ var n_expr: AExpr is writable, noinit
+ var n_kwas: TKwas is writable, noinit
+ var n_opar: nullable TOpar = null is writable
+ var n_type: AType is writable, noinit
+ var n_cpar: nullable TCpar = null is writable
end
# A as-not-null cast. eg `x.as(not null)`
class AAsNotnullExpr
super AExpr
- readable var _n_expr: AExpr
- readable var _n_kwas: TKwas
- readable var _n_opar: TOpar
- readable var _n_kwnot: TKwnot
- readable var _n_kwnull: TKwnull
- readable var _n_cpar: TCpar
+ var n_expr: AExpr is writable, noinit
+ var n_kwas: TKwas is writable, noinit
+ var n_opar: nullable TOpar = null is writable
+ var n_kwnot: TKwnot is writable, noinit
+ var n_kwnull: TKwnull is writable, noinit
+ var n_cpar: nullable TCpar = null is writable
end
# A is-set check of old-style attributes. eg `isset x._a`
class AIssetAttrExpr
super AAttrFormExpr
- readable var _n_kwisset: TKwisset
+ var n_kwisset: TKwisset is writable, noinit
+end
+
+# A elyspis notation used to pass an expression as it in a vararg parameter
+class AVarargExpr
+ super AExpr
+ var n_expr: AExpr is writable, noinit
+ var n_dotdotdot: TDotdotdot is writable, noinit
end
# A list of expression separated with commas (arguments for instance)
abstract class AExprs
super Prod
- readable var _n_exprs: ANodes[AExpr] = new ANodes[AExpr](self)
+ var n_exprs: ANodes[AExpr] = new ANodes[AExpr](self)
end
+
class ADebugTypeExpr
super AExpr
- readable var _n_kwdebug: TKwdebug
- readable var _n_kwtype: TKwtype
- readable var _n_expr: AExpr
- readable var _n_type: AType
+ var n_kwdebug: TKwdebug is writable, noinit
+ var n_kwtype: TKwtype is writable, noinit
+ var n_expr: AExpr is writable, noinit
+ var n_type: AType is writable, noinit
end
# A simple list of expressions
# A list of expressions enclosed in parentheses
class AParExprs
super AExprs
- readable var _n_opar: TOpar
- readable var _n_cpar: TCpar
+ var n_opar: TOpar is writable, noinit
+ var n_cpar: TCpar is writable, noinit
end
# A list of expressions enclosed in brackets
class ABraExprs
super AExprs
- readable var _n_obra: TObra
- readable var _n_cbra: TCbra
+ var n_obra: TObra is writable, noinit
+ var n_cbra: TCbra is writable, noinit
end
# A complex assignment operator. eg `+=`
end
class APlusAssignOp
super AAssignOp
- readable var _n_pluseq: TPluseq
+ var n_pluseq: TPluseq is writable, noinit
end
class AMinusAssignOp
super AAssignOp
- readable var _n_minuseq: TMinuseq
+ var n_minuseq: TMinuseq is writable, noinit
end
-class AClosureDef
- super ALabelable
- readable var _n_bang: TBang
- readable var _n_id: AClosureId
- readable var _n_ids: ANodes[TId] = new ANodes[TId](self)
- readable var _n_kwdo: nullable TKwdo = null
- readable var _n_expr: nullable AExpr = null
- redef fun hot_location do return n_id.location
-end
-abstract class AClosureId
- super Prod
-end
-class ASimpleClosureId
- super AClosureId
- readable var _n_id: TId
-end
-class ABreakClosureId
- super AClosureId
- readable var _n_kwbreak: TKwbreak
-end
class AModuleName
super Prod
- readable var _n_quad: nullable TQuad = null
- readable var _n_path: ANodes[TId] = new ANodes[TId](self)
- readable var _n_id: TId
+ var n_quad: nullable TQuad = null is writable
+ var n_path: ANodes[TId] = new ANodes[TId](self)
+ var n_id: TId is writable, noinit
end
class AInLanguage
super Prod
- readable var _n_kwin: TKwin
- readable var _n_string: TString
+ var n_kwin: TKwin is writable, noinit
+ var n_string: TString is writable, noinit
end
class AExternCodeBlock
super Prod
- readable var _n_in_language: nullable AInLanguage = null
- readable var _n_extern_code_segment: TExternCodeSegment
+ var n_in_language: nullable AInLanguage = null is writable
+ var n_extern_code_segment: TExternCodeSegment is writable, noinit
end
class AQualified
super Prod
- readable var _n_quad: nullable TQuad = null
- readable var _n_id: ANodes[TId] = new ANodes[TId](self)
- readable var _n_classid: nullable TClassid = null
+ var n_quad: nullable TQuad = null is writable
+ var n_id: ANodes[TId] = new ANodes[TId](self)
+ var n_classid: nullable TClassid = null is writable
end
# A documentation of a definition
# It contains the block of comments just above the declaration
class ADoc
super Prod
- readable var _n_comment: ANodes[TComment] = new ANodes[TComment](self)
+ var n_comment: ANodes[TComment] = new ANodes[TComment](self)
end
class AAnnotations
super Prod
- readable var _n_at: nullable TAt = null
- readable var _n_opar: nullable TOpar = null
- readable var _n_items: ANodes[AAnnotation] = new ANodes[AAnnotation](self)
- readable var _n_cpar: nullable TCpar = null
+ var n_at: nullable TAt = null is writable
+ var n_opar: nullable TOpar = null is writable
+ var n_items: ANodes[AAnnotation] = new ANodes[AAnnotation](self)
+ var n_cpar: nullable TCpar = null is writable
end
class AAnnotation
super Prod
- readable var _n_atid: AAtid
- readable var _n_opar: nullable TOpar = null
- readable var _n_args: ANodes[AAtArg] = new ANodes[AAtArg](self)
- readable var _n_cpar: nullable TCpar = null
+ var n_doc: nullable ADoc = null is writable
+ var n_kwredef: nullable TKwredef = null is writable
+ var n_visibility: nullable AVisibility is writable
+ var n_atid: AAtid is writable, noinit
+ var n_opar: nullable TOpar = null is writable
+ var n_args: ANodes[AAtArg] = new ANodes[AAtArg](self)
+ var n_cpar: nullable TCpar = null is writable
end
abstract class AAtArg
super Prod
end
class ATypeAtArg
super AAtArg
- readable var _n_type: AType
+ var n_type: AType is writable, noinit
end
class AExprAtArg
super AAtArg
- readable var _n_expr: AExpr
+ var n_expr: AExpr is writable, noinit
end
class AAtAtArg
super AAtArg
end
abstract class AAtid
super Prod
- readable var _n_id: Token
+ var n_id: Token is writable, noinit
end
class AIdAtid
super AAtid
class AKwexternAtid
super AAtid
end
-class AKwinternAtid
- super AAtid
-end
-class AKwreadableAtid
- super AAtid
-end
-class AKwwritableAtid
+class AKwimportAtid
super AAtid
end
-class AKwimportAtid
+class AKwabstractAtid
super AAtid
end
# The root of the AST
class Start
super Prod
- readable var _n_base: nullable AModule
- readable var _n_eof: EOF
+ var n_base: nullable AModule is writable
+ var n_eof: EOF is writable, noinit
init(n_base: nullable AModule, n_eof: EOF)
do
self._n_base = n_base
nitlanguage / nit.git / blobdiff