# This file is part of NIT ( http://www.nitlanguage.org ).
#
-# Copyright 2008-2009 Jean Privat <jean@pryen.org>
-# Copyright 2009 Jean-Sebastien Gelinas <calestar@gmail.com>
-#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
import location
-# Root of the AST hierarchy
+# Root of the AST class-hierarchy
abstract class ANode
- var _location: nullable Location
- # Location is set during AST building. Once built, location cannon be null
- # However, manual instanciated nodes may need mode care
+ 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)
+
# The location of the important part of the node (identifier or whatever)
fun hot_location: Location do return location
- init do end
# Display a message for the colored location of the node
fun debug(message: String)
end
# Parent of the node in the AST
- readable writable var _parent: nullable ANode
+ readable writable var _parent: nullable ANode = null
+
+ # Protect form invalid instantiation of nodes
+ private init do end
# Remove a child from the AST
fun remove_child(child: ANode)
end
# Visit all nodes in order.
- # Thus, call "v.visit(e)" for each node e
+ # Thus, call `v.enter_visit(e)` for each child `e`
fun visit_all(v: Visitor) is abstract
end
# Ancestor of all tokens
+# A token is a node that has a `text` but no children.
abstract class Token
super ANode
+
+ # The raw content on the token
fun text: String is abstract
fun text=(text: String) is abstract
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
redef fun replace_with(n: ANode)
- do
- super
- assert n isa Prod
+ do
+ super
+ assert n isa Prod
n.location = location
- end
+ end
end
-# Abstract standard visitor
+# Abstract standard visitor on the AST
abstract class Visitor
# What the visitor do when a node is visited
- # Concrete visitors should redefine this method.
- protected fun visit(e: nullable ANode) is abstract
+ # Concrete visitors should implement this method.
+ # @toimplement
+ protected fun visit(e: nullable ANode) is abstract
- # Ask the visitor to visit a given node.
- # Usually automatically called by visit_all* methods.
- # This methos should not be redefined
- fun enter_visit(e: nullable ANode)
+ # Ask the visitor to visit a given node.
+ # Usually automatically called by visit_all* methods.
+ # This method should not be redefined
+ fun enter_visit(e: nullable ANode)
do
var old = _current_node
_current_node = e
readable var _current_node: nullable ANode = null
end
+# Token of end of line (basically `\n`)
class TEol
super Token
redef fun to_s
return "end of line"
end
end
+
+# Token of a line of comments
+# Starts with the `#` and contains the final end-of-line (if any)
class TComment
super Token
end
+
+# A token associated with a keyword
abstract class TokenKeyword
super Token
redef fun to_s
class TAssign
super Token
end
+
+# A token associated with an operator (and other lookalike symbols)
abstract class TokenOperator
super Token
redef fun to_s
class TAt
super Token
end
+
+# A class (or formal type) identifier. They start with an uppercase.
class TClassid
super Token
redef fun to_s
do return "type identifier '{text}'"
end
end
+
+# A standard identifier (variable, method...). They start with a lowercase.
class TId
super Token
redef fun to_s
do return "identifier '{text}'"
end
end
+
+# An attribute identifier. They start with an underscore.
class TAttrid
super Token
redef fun to_s
do return "attribute '{text}'"
end
end
+
+# A token of a literal value (string, integer, etc).
abstract class TokenLiteral
super Token
redef fun to_s
class TEndString
super Token
end
+
+# A malformed string
class TBadString
super Token
redef fun to_s
do return "malformed string {text}"
end
end
+
+# A malformed char
class TBadChar
super Token
redef fun to_s
do return "malformed character {text}"
end
end
+
class TExternCodeSegment
super Token
end
+
+# A end of file
class EOF
super Token
redef fun to_s
return "end of file"
end
end
+
+# A mark of an error
class AError
super EOF
end
super AError
end
+# The main node of a Nit source-file
class AModule
super Prod
- readable var _n_moduledecl: nullable AModuledecl = null
- readable var _n_imports: List[AImport] = new List[AImport]
+
+ readable var _n_moduledecl: nullable AModuledecl = null
+ readable var _n_imports: List[AImport] = new List[AImport]
readable var _n_extern_code_blocks: List[AExternCodeBlock] = new List[AExternCodeBlock]
- readable var _n_classdefs: List[AClassdef] = new List[AClassdef]
+ readable var _n_classdefs: List[AClassdef] = new List[AClassdef]
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
+ readable var _n_doc: nullable ADoc = null
+ readable var _n_kwmodule: TKwmodule
+ readable var _n_name: AModuleName
end
-abstract class AImport super Prod end
+
+# A import clause of a module
+abstract class AImport
+ super Prod
+end
+
+# 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
+ readable var _n_visibility: AVisibility
+ readable var _n_kwimport: TKwimport
+ readable var _n_name: AModuleName
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
+ readable var _n_visibility: AVisibility
+ readable var _n_kwimport: TKwimport
+ readable var _n_kwend: TKwend
+end
+
+# A visibility modifier
+#
+# The public visibility is an empty production (no keyword).
+#
+# Note: even if some visibilities are only valid on some placse (for instance, no `protected` class or no `intrude` method)
+# the parser has no such a restriction, therefore the semantic phases has to check that the visibilities make sense.
+abstract class AVisibility
+ super Prod
end
-abstract class AVisibility super Prod end
class APublicVisibility
super AVisibility
end
class APrivateVisibility
super AVisibility
- readable var _n_kwprivate: TKwprivate
+ readable var _n_kwprivate: TKwprivate
end
class AProtectedVisibility
super AVisibility
- readable var _n_kwprotected: TKwprotected
+ readable var _n_kwprotected: TKwprotected
end
class AIntrudeVisibility
super AVisibility
- readable var _n_kwintrude: TKwintrude
+ readable var _n_kwintrude: TKwintrude
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: List[APropdef] = new List[APropdef]
+ readable var _n_propdefs: List[APropdef] = new List[APropdef]
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: List[AFormaldef] = new List[AFormaldef]
+ 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: List[AFormaldef] = new List[AFormaldef]
readable var _n_extern_code_block: nullable AExternCodeBlock = null
- readable var _n_superclasses: List[ASuperclass] = new List[ASuperclass]
- readable var _n_kwend: TKwend
- redef fun hot_location do return n_id.location
+ readable var _n_superclasses: List[ASuperclass] = new List[ASuperclass]
+ readable var _n_kwend: TKwend
+ redef fun hot_location do return n_id.location
end
+
+# The implicit class definition of the implicit main method
class ATopClassdef
super AClassdef
end
+
+# The implicit class definition of the top-level methods
class AMainClassdef
super AClassdef
end
-abstract class AClasskind super Prod end
+
+# The modifier for the kind of class (abstract, interface, etc.)
+abstract class AClasskind
+ super Prod
+end
class AConcreteClasskind
super AClasskind
- readable var _n_kwclass: TKwclass
+ readable var _n_kwclass: TKwclass
end
class AAbstractClasskind
super AClasskind
- readable var _n_kwabstract: TKwabstract
- readable var _n_kwclass: TKwclass
+ readable var _n_kwabstract: TKwabstract
+ readable var _n_kwclass: TKwclass
end
class AInterfaceClasskind
super AClasskind
- readable var _n_kwinterface: TKwinterface
+ readable var _n_kwinterface: TKwinterface
end
class AEnumClasskind
super AClasskind
- readable var _n_kwenum: TKwenum
+ readable var _n_kwenum: TKwenum
end
class AExternClasskind
- super AClasskind
- readable var _n_kwextern: TKwextern
- readable var _n_kwclass: nullable TKwclass = null
+ super AClasskind
+ readable var _n_kwextern: TKwextern
+ readable var _n_kwclass: nullable TKwclass = null
end
+
+# The definition of a formal generic parameter type. eg `X: Y`
class AFormaldef
super Prod
- readable var _n_id: TClassid
- readable var _n_type: nullable AType = null
+ readable var _n_id: TClassid
+ # The bound of the parameter type
+ readable var _n_type: nullable AType = null
end
+
+# A super-class. eg `super X`
class ASuperclass
super Prod
- readable var _n_kwsuper: TKwsuper
- readable var _n_type: AType
+ readable var _n_kwsuper: TKwsuper
+ readable var _n_type: AType
end
-abstract class APropdef super Prod
- readable var _n_doc: nullable ADoc = null
+
+# The definition of a property
+abstract class APropdef
+ super Prod
+ readable var _n_doc: nullable ADoc = null
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
- readable var _n_id: nullable TAttrid
- readable var _n_id2: nullable TId
- readable var _n_type: nullable AType = null
- readable var _n_readable: nullable AAble = null
- readable var _n_writable: nullable AAble = null
- readable var _n_expr: nullable AExpr = null
- redef fun hot_location
- do
- if n_id != null then return n_id.location else return n_id2.location
- end
+ 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
+
+ # The identifier for a new-style attribute (null if old-style)
+ readable var _n_id2: nullable TId
+
+ readable var _n_type: nullable AType = null
+ readable var _n_readable: nullable AAble = null
+ readable var _n_writable: nullable AAble = null
+
+ # The initial value, if any
+ readable var _n_expr: nullable AExpr = null
+ redef fun hot_location
+ do
+ if n_id != null then return n_id.location else return n_id2.location
+ end
end
+
+# A definition of all kind of method (including constructors)
abstract 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
- redef fun hot_location
- do
- if n_methid != null then
- return n_methid.location
- else
- return location
- end
- end
+ 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
+ redef fun hot_location
+ do
+ if n_methid != null then
+ return n_methid.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
+ readable var _n_kwmeth: TKwmeth
end
+
+# A method marked intern
class AInternMethPropdef
super AMethPropdef
- readable var _n_kwmeth: TKwmeth
+ 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
+ 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
+ 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
+ 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
+ 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
+ readable var _n_kwnew: TKwnew
end
+
+# The implicit main method
class AMainMethPropdef
super AConcreteMethPropdef
end
+
+# Declaration of callbacks for extern methods
class AExternCalls
super Prod
- readable var _n_kwimport: TKwimport
- readable var _n_extern_calls: List[AExternCall] = new List[AExternCall]
+ readable var _n_kwimport: TKwimport
+ readable var _n_extern_calls: List[AExternCall] = new List[AExternCall]
end
abstract class AExternCall
super Prod
end
abstract class APropExternCall
-super AExternCall
+ super AExternCall
end
class ALocalPropExternCall
-super APropExternCall
- readable var _n_methid: AMethid
+ super APropExternCall
+ readable var _n_methid: AMethid
end
class AFullPropExternCall
-super APropExternCall
- readable var _n_classid: TClassid
- readable var _n_quad: nullable TQuad = null
- readable var _n_methid: AMethid
+ super APropExternCall
+ readable var _n_classid: TClassid
+ readable var _n_quad: nullable TQuad = null
+ readable var _n_methid: AMethid
end
class AInitPropExternCall
-super APropExternCall
- readable var _n_classid: TClassid
+ super APropExternCall
+ readable var _n_classid: TClassid
end
class ASuperExternCall
-super AExternCall
- readable var _n_kwsuper: TKwsuper
+ super AExternCall
+ readable var _n_kwsuper: TKwsuper
end
abstract class ACastExternCall
-super AExternCall
+ super AExternCall
end
class ACastAsExternCall
-super ACastExternCall
- readable var _n_from_type: AType
- readable var _n_kwas: TKwas
- readable var _n_to_type: AType
+ super ACastExternCall
+ readable var _n_from_type: AType
+ readable var _n_kwas: TKwas
+ readable var _n_to_type: AType
end
class AAsNullableExternCall
-super ACastExternCall
- readable var _n_type: AType
- readable var _n_kwas: TKwas
- readable var _n_kwnullable: TKwnullable
+ super ACastExternCall
+ readable var _n_type: AType
+ readable var _n_kwas: TKwas
+ readable var _n_kwnullable: TKwnullable
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
+ super ACastExternCall
+ readable var _n_type: AType
+ readable var _n_kwas: TKwas
+ readable var _n_kwnot: TKwnot
+ readable var _n_kwnullable: TKwnullable
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
+ 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
-abstract class AAble super Prod
- readable var _n_visibility: nullable AVisibility = null
- readable var _n_kwredef: nullable TKwredef = null
+
+# 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
+ readable var _n_kwreadable: TKwreadable
end
+
+# A `writable` modifier
class AWriteAble
super AAble
- readable var _n_kwwritable: TKwwritable
+ readable var _n_kwwritable: TKwwritable
+end
+
+# The identifier of a method in a method declaration.
+# There is a specific class because of operator and setters.
+abstract class AMethid
+ super Prod
end
-abstract class AMethid super Prod end
class AIdMethid
super AMethid
- readable var _n_id: TId
+ readable var _n_id: TId
end
class APlusMethid
super AMethid
- readable var _n_plus: TPlus
+ readable var _n_plus: TPlus
end
class AMinusMethid
super AMethid
- readable var _n_minus: TMinus
+ readable var _n_minus: TMinus
end
class AStarMethid
super AMethid
- readable var _n_star: TStar
+ readable var _n_star: TStar
end
class ASlashMethid
super AMethid
- readable var _n_slash: TSlash
+ readable var _n_slash: TSlash
end
class APercentMethid
super AMethid
- readable var _n_percent: TPercent
+ readable var _n_percent: TPercent
end
class AEqMethid
super AMethid
- readable var _n_eq: TEq
+ readable var _n_eq: TEq
end
class ANeMethid
super AMethid
- readable var _n_ne: TNe
+ readable var _n_ne: TNe
end
class ALeMethid
super AMethid
- readable var _n_le: TLe
+ readable var _n_le: TLe
end
class AGeMethid
super AMethid
- readable var _n_ge: TGe
+ readable var _n_ge: TGe
end
class ALtMethid
super AMethid
- readable var _n_lt: TLt
+ readable var _n_lt: TLt
end
class AGtMethid
super AMethid
- readable var _n_gt: TGt
+ readable var _n_gt: TGt
end
class ALlMethid
super AMethid
- readable writable var _n_ll: TLl
+ readable writable var _n_ll: TLl
end
class AGgMethid
super AMethid
- readable writable var _n_gg: TGg
+ readable writable var _n_gg: TGg
end
class ABraMethid
super AMethid
- readable var _n_obra: TObra
- readable var _n_cbra: TCbra
+ readable var _n_obra: TObra
+ readable var _n_cbra: TCbra
end
class AStarshipMethid
super AMethid
- readable var _n_starship: TStarship
+ readable var _n_starship: TStarship
end
class AAssignMethid
super AMethid
- readable var _n_id: TId
- readable var _n_assign: TAssign
+ readable var _n_id: TId
+ readable var _n_assign: TAssign
end
class ABraassignMethid
super AMethid
- readable var _n_obra: TObra
- readable var _n_cbra: TCbra
- readable var _n_assign: TAssign
+ readable var _n_obra: TObra
+ readable var _n_cbra: TCbra
+ readable var _n_assign: TAssign
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: List[AParam] = new List[AParam]
- readable var _n_cpar: nullable TCpar = null
- readable var _n_type: nullable AType = null
- readable var _n_closure_decls: List[AClosureDecl] = new List[AClosureDecl]
+ readable var _n_opar: nullable TOpar = null
+ readable var _n_params: List[AParam] = new List[AParam]
+ readable var _n_cpar: nullable TCpar = null
+ readable var _n_type: nullable AType = null
+ readable var _n_closure_decls: List[AClosureDecl] = new List[AClosureDecl]
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
+ 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
+ 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
end
+
+# A static type. eg `nullable X[Y]`
class AType
super Prod
- readable var _n_kwnullable: nullable TKwnullable = null
- readable var _n_id: TClassid
- readable var _n_types: List[AType] = new List[AType]
+ readable var _n_kwnullable: nullable TKwnullable = null
+
+ # The name of the class or of the formal type
+ readable var _n_id: TClassid
+
+ # Type arguments for a generic type
+ readable var _n_types: List[AType] = new List[AType]
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
+ readable var _n_kwlabel: TKwlabel
+ readable var _n_id: TId
end
-abstract class AExpr super Prod end
+
+# Expression and statements
+# From a AST point of view there is no distinction between statement and expressions (even if the parser has to distinguish them)
+abstract class AExpr
+ super Prod
+end
+
+# A sequence of AExpr (usually statements)
+# The last AExpr gives the value of the whole block
class ABlockExpr
super AExpr
- readable var _n_expr: List[AExpr] = new List[AExpr]
- readable var _n_kwend: nullable TKwend = null
+ readable var _n_expr: List[AExpr] = new List[AExpr]
+ readable var _n_kwend: nullable TKwend = null
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
- readable var _n_expr: nullable AExpr = null
+ readable var _n_kwvar: TKwvar
+ readable var _n_id: TId
+ readable var _n_type: nullable AType = null
+ readable var _n_assign: nullable TAssign = null
+
+ # The initial value, if any
+ readable var _n_expr: nullable AExpr = null
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
+ readable var _n_kwreturn: nullable TKwreturn = null
+ readable var _n_expr: nullable AExpr = null
end
+
+# Something that has a label.
abstract class ALabelable
super Prod
- readable var _n_label: nullable ALabel = null
+ readable var _n_label: nullable ALabel = null
end
+
+# A `break` statement.
class ABreakExpr
super AExpr
super ALabelable
- readable var _n_kwbreak: TKwbreak
- readable var _n_expr: nullable AExpr = null
+ readable var _n_kwbreak: TKwbreak
+ readable var _n_expr: nullable AExpr = null
end
+
+# An `abort` statement
class AAbortExpr
super AExpr
- readable var _n_kwabort: TKwabort
+ readable var _n_kwabort: TKwabort
end
+
+# A `continue` statement
class AContinueExpr
super AExpr
super ALabelable
- readable var _n_kwcontinue: nullable TKwcontinue = null
- readable var _n_expr: nullable AExpr = null
+ readable var _n_kwcontinue: nullable TKwcontinue = null
+ readable var _n_expr: nullable AExpr = null
end
+
+# A `do` statement
class ADoExpr
super AExpr
super ALabelable
- readable var _n_kwdo: TKwdo
- readable var _n_block: nullable AExpr = null
+ readable var _n_kwdo: TKwdo
+ readable var _n_block: nullable AExpr = null
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
+ readable var _n_kwif: TKwif
+ readable var _n_expr: AExpr
+ readable var _n_then: nullable AExpr = null
+ readable var _n_else: nullable AExpr = null
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
+ 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
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
+ readable var _n_kwwhile: TKwwhile
+ readable var _n_expr: AExpr
+ readable var _n_kwdo: TKwdo
+ readable var _n_block: nullable AExpr = null
end
+
+# A `loop` statement
class ALoopExpr
super AExpr
super ALabelable
- readable var _n_kwloop: TKwloop
- readable var _n_block: nullable AExpr = null
+ readable var _n_kwloop: TKwloop
+ readable var _n_block: nullable AExpr = null
end
+
+# A `for` statement
class AForExpr
super AExpr
super ALabelable
- readable var _n_kwfor: TKwfor
- readable var _n_ids: List[TId] = new List[TId]
- readable var _n_expr: AExpr
- readable var _n_kwdo: TKwdo
- readable var _n_block: nullable AExpr = null
+ readable var _n_kwfor: TKwfor
+ readable var _n_ids: List[TId] = new List[TId]
+ readable var _n_expr: AExpr
+ readable var _n_kwdo: TKwdo
+ readable var _n_block: nullable AExpr = null
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
+ readable var _n_kwassert: TKwassert
+ readable var _n_id: nullable TId = null
+ readable var _n_expr: AExpr
+ readable var _n_else: nullable AExpr = null
end
+
+# Whatever is a simple assignment. eg `= something`
abstract class AAssignFormExpr
super AExpr
- readable var _n_assign: TAssign
- readable var _n_value: AExpr
+ readable var _n_assign: TAssign
+ readable var _n_value: AExpr
end
+
+# Whatever is a combined assignment. eg `+= something`
abstract class AReassignFormExpr
super AExpr
- readable var _n_assign_op: AAssignOp
- readable var _n_value: AExpr
+ readable var _n_assign_op: AAssignOp
+ readable var _n_value: AExpr
end
+
+# A `once` expression. eg `once x`
class AOnceExpr
super AProxyExpr
- readable var _n_kwonce: TKwonce
+ readable var _n_kwonce: TKwonce
end
+
+# A polymorphic invocation of a method
+# The form of the invocation (name, arguments, etc) are specific
abstract class ASendExpr
super AExpr
- readable var _n_expr: AExpr
- readable var _n_closure_defs: List[AClosureDef] = new List[AClosureDef]
+ # The receiver of the method invocation
+ readable var _n_expr: AExpr
+ readable var _n_closure_defs: List[AClosureDef] = new List[AClosureDef]
end
+
+# A binary operation on a method
abstract class ABinopExpr
super ASendExpr
- readable var _n_expr2: AExpr
+ # The second operand of the operation
+ # Note: the receiver (`n_expr`) is the first operand
+ readable var _n_expr2: AExpr
end
+
+# Something that is boolean expression
abstract class ABoolExpr
super AExpr
end
+
+# A `or` expression
class AOrExpr
super ABoolExpr
- readable var _n_expr: AExpr
- readable var _n_expr2: AExpr
+ readable var _n_expr: AExpr
+ readable var _n_expr2: AExpr
end
+
+# A `and` expression
class AAndExpr
super ABoolExpr
- readable var _n_expr: AExpr
- readable var _n_expr2: AExpr
+ readable var _n_expr: AExpr
+ readable var _n_expr2: AExpr
end
+
+# A `or else` expression
class AOrElseExpr
super ABoolExpr
- readable var _n_expr: AExpr
- readable var _n_expr2: AExpr
+ readable var _n_expr: AExpr
+ readable var _n_expr2: AExpr
end
+
+# A `not` expression
class ANotExpr
super ABoolExpr
- readable var _n_kwnot: TKwnot
- readable var _n_expr: AExpr
+ readable var _n_kwnot: TKwnot
+ readable var _n_expr: AExpr
end
+
+# A `==` expression
class AEqExpr
super ABinopExpr
end
+
+# A `is` expression
class AEeExpr
super ABoolExpr
- readable var _n_expr: AExpr
- readable var _n_expr2: AExpr
+ readable var _n_expr: AExpr
+ readable var _n_expr2: AExpr
end
+
+# A `!=` expression
class ANeExpr
super ABinopExpr
end
+
+# A `<` expression
class ALtExpr
super ABinopExpr
end
+
+# A `<=` expression
class ALeExpr
super ABinopExpr
end
+
+# A `<<` expression
class ALlExpr
super ABinopExpr
end
+
+# A `>` expression
class AGtExpr
super ABinopExpr
end
+
+# A `>=` expression
class AGeExpr
super ABinopExpr
end
+
+# A `>>` expression
class AGgExpr
super ABinopExpr
end
+
+# A type-ckeck expression. eg `x isa T`
class AIsaExpr
super ABoolExpr
- readable var _n_expr: AExpr
- readable var _n_type: AType
+ readable var _n_expr: AExpr
+ readable var _n_type: AType
end
+
+# A `+` expression
class APlusExpr
super ABinopExpr
end
+
+# A `-` expression
class AMinusExpr
super ABinopExpr
end
+
+# A `<=>` expression
class AStarshipExpr
super ABinopExpr
end
+
+# A `*` expression
class AStarExpr
super ABinopExpr
end
+
+# A `/` expression
class ASlashExpr
super ABinopExpr
end
+
+# A `%` expression
class APercentExpr
super ABinopExpr
end
+
+# A unary minus expression. eg `-x`
class AUminusExpr
super ASendExpr
- readable var _n_minus: TMinus
+ readable var _n_minus: TMinus
end
+
+# An explicit instantiation. eg `new T`
class ANewExpr
super AExpr
- readable var _n_kwnew: TKwnew
- readable var _n_type: AType
- readable var _n_id: nullable TId = null
- readable var _n_args: AExprs
+ readable var _n_kwnew: TKwnew
+ readable var _n_type: AType
+
+ # The name of the named-constructor, if any
+ readable var _n_id: nullable TId = null
+ readable var _n_args: AExprs
end
+
+# Whatever is a old-style attribute access
abstract class AAttrFormExpr
super AExpr
- readable var _n_expr: AExpr
- readable var _n_id: TAttrid
+
+ # The receiver of the attribute
+ readable var _n_expr: AExpr
+
+ # The name of the attribute
+ readable var _n_id: TAttrid
end
+
+# The read of an attribute. eg `x._a`
class AAttrExpr
super AAttrFormExpr
end
+
+# The assignment of an attribute. eg `x._a=y`
class AAttrAssignExpr
super AAttrFormExpr
super AAssignFormExpr
end
+
+# Whatever looks-like a call with a standard method and any number of arguments.
abstract class ACallFormExpr
super ASendExpr
- readable var _n_id: TId
- readable var _n_args: AExprs
+
+ # The name of the method
+ readable var _n_id: TId
+
+ # The arguments of the call
+ readable var _n_args: AExprs
end
+
+# A complex setter call (standard or brackets)
abstract class ASendReassignFormExpr
super ASendExpr
super AReassignFormExpr
end
+
+# A complex attribute assignment. eg `x._a+=y`
class AAttrReassignExpr
super AAttrFormExpr
super AReassignFormExpr
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.
+# 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.
+# Semantic analysis have to transform them to instance of `AVarAssignExpr`.
class ACallAssignExpr
super ACallFormExpr
super AAssignFormExpr
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.
+# Semantic analysis have to transform them to instance of `AVarReassignExpr`.
class ACallReassignExpr
super ACallFormExpr
super ASendReassignFormExpr
end
+
+# 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
+ readable var _n_qualified: nullable AQualified = null
+ readable var _n_kwsuper: TKwsuper
+ readable var _n_args: AExprs
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
class AInitExpr
super ASendExpr
- readable var _n_kwinit: TKwinit
- readable var _n_args: AExprs
+ readable var _n_kwinit: TKwinit
+ readable var _n_args: AExprs
end
+
+# Whatever looks-like a call of the brackets `[]` operator.
abstract class ABraFormExpr
super ASendExpr
- readable var _n_args: AExprs
+ readable var _n_args: AExprs
end
+
+# A call of the brackets operator. eg `x[y,z]`
class ABraExpr
super ABraFormExpr
end
+
+# A setter call of the bracket operator. eg `x[y,z]=t`
class ABraAssignExpr
super ABraFormExpr
super AAssignFormExpr
end
+
+# Whatever is an access to a local variable
abstract class AVarFormExpr
super AExpr
- readable var _n_id: TId
+ readable var _n_id: TId
end
+
+# A complex setter call of the bracket operator. eg `x[y,z]+=t`
class ABraReassignExpr
super ABraFormExpr
super ASendReassignFormExpr
end
+
class AClosureCallExpr
super AExpr
- readable var _n_id: TId
- readable var _n_args: AExprs
- readable var _n_closure_defs: List[AClosureDef] = new List[AClosureDef]
+ readable var _n_id: TId
+ readable var _n_args: AExprs
+ readable var _n_closure_defs: List[AClosureDef] = new List[AClosureDef]
end
+
+# A local variable read access.
+# The parser cannot instantiate them, see `ACallExpr`.
class AVarExpr
super AVarFormExpr
end
+
+# A local variable simple assigment access
+# The parser cannot instantiate them, see `ACallAssingExpr`.
class AVarAssignExpr
super AVarFormExpr
super AAssignFormExpr
end
+
+# A local variable complex assignment access
+# The parser cannot instantiate them, see `ACallReassingExpr`.
class AVarReassignExpr
super AVarFormExpr
super AReassignFormExpr
end
+
+# A literal range, open or closed
abstract class ARangeExpr
super AExpr
- readable var _n_expr: AExpr
- readable var _n_expr2: AExpr
+ readable var _n_expr: AExpr
+ readable var _n_expr2: AExpr
end
+
+# A closed literal range. eg `[x..y]`
class ACrangeExpr
super ARangeExpr
readable var _n_obra: TObra
readable var _n_cbra: TCbra
end
+
+# An open literal range. eg `[x..y[`
class AOrangeExpr
super ARangeExpr
readable var _n_obra: TObra
readable var _n_cbra: TObra
end
+
+# A literal array. eg. `[x,y,z]`
class AArrayExpr
super AExpr
- readable var _n_exprs: AExprs
+ readable var _n_exprs: AExprs
end
+
+# A read of `self`
class ASelfExpr
super AExpr
- readable var _n_kwself: nullable TKwself
+ readable var _n_kwself: nullable TKwself
end
+
+# When there is no explicit receiver, `self` is implicit
class AImplicitSelfExpr
super ASelfExpr
end
+
+# A `true` boolean literal constant
class ATrueExpr
super ABoolExpr
- readable var _n_kwtrue: TKwtrue
+ readable var _n_kwtrue: TKwtrue
end
+# A `false` boolean literal constant
class AFalseExpr
super ABoolExpr
- readable var _n_kwfalse: TKwfalse
+ readable var _n_kwfalse: TKwfalse
end
+# A `null` literal constant
class ANullExpr
super AExpr
- readable var _n_kwnull: TKwnull
+ readable var _n_kwnull: TKwnull
end
+# An integer literal
class AIntExpr
super AExpr
- readable var _n_number: TNumber
+ readable var _n_number: TNumber
end
+# A float literal
class AFloatExpr
super AExpr
- readable var _n_float: TFloat
+ readable var _n_float: TFloat
end
+# A character literal
class ACharExpr
super AExpr
- readable var _n_char: TChar
+ readable var _n_char: TChar
end
+# A string literal
abstract class AStringFormExpr
super AExpr
- readable var _n_string: Token
+ readable var _n_string: Token
end
+
+# A simple string. eg. `"abc"`
class AStringExpr
super AStringFormExpr
end
+
+# The start of a superstring. eg `"abc{`
class AStartStringExpr
super AStringFormExpr
end
+
+# The middle of a superstring. eg `}abc{`
class AMidStringExpr
super AStringFormExpr
end
+
+# The end of a superstrng. eg `}abc"`
class AEndStringExpr
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"]
class ASuperstringExpr
super AExpr
- readable var _n_exprs: List[AExpr] = new List[AExpr]
+ readable var _n_exprs: List[AExpr] = new List[AExpr]
end
+
+# A simple parenthesis. eg `(x)`
class AParExpr
super AProxyExpr
- readable var _n_opar: TOpar
- readable var _n_cpar: TCpar
+ readable var _n_opar: TOpar
+ readable var _n_cpar: TCpar
end
+
+# Whatevej just contains (and mimic) an other expression
abstract class AProxyExpr
super AExpr
- readable var _n_expr: AExpr
+ readable var _n_expr: AExpr
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
+ 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
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
+ 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
end
+
+# A is-set check of old-style attributes. eg `isset x._a`
class AIssetAttrExpr
super AAttrFormExpr
- readable var _n_kwisset: TKwisset
+ readable var _n_kwisset: TKwisset
end
+
+# A list of expression separated with commas (arguments for instance)
abstract class AExprs
super Prod
- readable var _n_exprs: List[AExpr] = new List[AExpr]
+ readable var _n_exprs: List[AExpr] = new List[AExpr]
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
+ readable var _n_kwdebug: TKwdebug
+ readable var _n_kwtype: TKwtype
+ readable var _n_expr: AExpr
+ readable var _n_type: AType
end
+
+# A simple list of expressions
class AListExprs
super AExprs
end
+
+# A list of expressions enclosed in parentheses
class AParExprs
super AExprs
- readable var _n_opar: TOpar
- readable var _n_cpar: TCpar
+ readable var _n_opar: TOpar
+ readable var _n_cpar: TCpar
end
+
+# A list of expressions enclosed in brackets
class ABraExprs
super AExprs
- readable var _n_obra: TObra
- readable var _n_cbra: TCbra
+ readable var _n_obra: TObra
+ readable var _n_cbra: TCbra
+end
+
+# A complex assignment operator. eg `+=`
+abstract class AAssignOp
+ super Prod
end
-abstract class AAssignOp super Prod end
class APlusAssignOp
super AAssignOp
- readable var _n_pluseq: TPluseq
+ readable var _n_pluseq: TPluseq
end
class AMinusAssignOp
super AAssignOp
- readable var _n_minuseq: TMinuseq
+ readable var _n_minuseq: TMinuseq
end
+
class AClosureDef
super ALabelable
- readable var _n_bang: TBang
- readable var _n_id: AClosureId
- readable var _n_ids: List[TId] = new List[TId]
- readable var _n_kwdo: nullable TKwdo = null
- readable var _n_expr: nullable AExpr = null
- redef fun hot_location do return n_id.location
+ readable var _n_bang: TBang
+ readable var _n_id: AClosureId
+ readable var _n_ids: List[TId] = new List[TId]
+ 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
+ readable var _n_id: TId
end
class ABreakClosureId
super AClosureId
- readable var _n_kwbreak: TKwbreak
+ readable var _n_kwbreak: TKwbreak
end
class AModuleName
-super Prod
- readable var _n_quad: nullable TQuad = null
- readable var _n_path: List[TId] = new List[TId]
- readable var _n_id: TId
+ super Prod
+ readable var _n_quad: nullable TQuad = null
+ readable var _n_path: List[TId] = new List[TId]
+ readable var _n_id: TId
end
class AInLanguage
super Prod
- readable var _n_kwin: TKwin
- readable var _n_string: TString
+ readable var _n_kwin: TKwin
+ readable var _n_string: TString
end
class AExternCodeBlock
super Prod
- readable var _n_in_language: nullable AInLanguage = null
- readable var _n_extern_code_segment: TExternCodeSegment
+ readable var _n_in_language: nullable AInLanguage = null
+ readable var _n_extern_code_segment: TExternCodeSegment
end
class AQualified
super Prod
- readable var _n_quad: nullable TQuad = null
- readable var _n_id: List[TId] = new List[TId]
- readable var _n_classid: nullable TClassid = null
+ readable var _n_quad: nullable TQuad = null
+ readable var _n_id: List[TId] = new List[TId]
+ readable var _n_classid: nullable TClassid = null
end
+
+# A documentation of a definition
+# It contains the block of comments just above the declaration
class ADoc
super Prod
- readable var _n_comment: List[TComment] = new List[TComment]
+ readable var _n_comment: List[TComment] = new List[TComment]
end
class AAnnotations
super AAtid
end
+# The root of the AST
class Start
super Prod
- readable var _n_base: nullable AModule
- readable var _n_eof: EOF
- init(n_base: nullable AModule, n_eof: EOF)
- do
- self._n_base = n_base
- self._n_eof = n_eof
- end
+ readable var _n_base: nullable AModule
+ readable var _n_eof: EOF
+ init(n_base: nullable AModule, n_eof: EOF)
+ do
+ self._n_base = n_base
+ self._n_eof = n_eof
+ end
end
nitlanguage / nit.git / commitdiff