[nit.git] / src / parser / parser_nodes.nit

# 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
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# AST nodes of the Nit language
# Was previously based on parser_abs.nit.
package parser_nodes

import location

# Root of the AST 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
        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)
        do
                print "{hot_location} {self.class_name}: {message}\n{hot_location.colored_line("0;32")}"
        end
end

# Ancestor of all tokens
abstract class Token
        super ANode
        fun text: String is abstract

        redef fun to_s: String do
                return "'{text}'"
        end
end

# Ancestor of all productions
abstract class Prod
        super ANode
        fun location=(l: Location) do _location = l
end
class TEol
        super Token
        redef fun to_s
        do
                return "end of line"
        end
end
class TComment
        super Token
end
abstract class TokenKeyword
        super Token
        redef fun to_s
        do
                return "keyword '{text}'"
        end
end
class TKwmodule
        super TokenKeyword
end
class TKwimport
        super TokenKeyword
end
class TKwclass
        super TokenKeyword
end
class TKwabstract
        super TokenKeyword
end
class TKwinterface
        super TokenKeyword
end
class TKwenum
        super TokenKeyword
end
class TKwspecial
        super TokenKeyword
end
class TKwend
        super TokenKeyword
end
class TKwmeth
        super TokenKeyword
end
class TKwtype
        super TokenKeyword
end
class TKwinit
        super TokenKeyword
end
class TKwredef
        super TokenKeyword
end
class TKwis
        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
        super TokenKeyword
end
class TKwextern
        super TokenKeyword
end
class TKwprotected
        super TokenKeyword
end
class TKwprivate
        super TokenKeyword
end
class TKwintrude
        super TokenKeyword
end
class TKwif
        super TokenKeyword
end
class TKwthen
        super TokenKeyword
end
class TKwelse
        super TokenKeyword
end
class TKwwhile
        super TokenKeyword
end
class TKwloop
        super TokenKeyword
end
class TKwfor
        super TokenKeyword
end
class TKwin
        super TokenKeyword
end
class TKwand
        super TokenKeyword
end
class TKwor
        super TokenKeyword
end
class TKwnot
        super TokenKeyword
end
class TKwreturn
        super TokenKeyword
end
class TKwcontinue
        super TokenKeyword
end
class TKwbreak
        super TokenKeyword
end
class TKwabort
        super TokenKeyword
end
class TKwassert
        super TokenKeyword
end
class TKwnew
        super TokenKeyword
end
class TKwisa
        super TokenKeyword
end
class TKwonce
        super TokenKeyword
end
class TKwsuper
        super TokenKeyword
end
class TKwself
        super TokenKeyword
end
class TKwtrue
        super TokenKeyword
end
class TKwfalse
        super TokenKeyword
end
class TKwnull
        super TokenKeyword
end
class TKwas
        super TokenKeyword
end
class TKwnullable
        super TokenKeyword
end
class TKwisset
        super TokenKeyword
end
class TKwlabel
        super TokenKeyword
end
class TKwdebug
        super Token
end
class TOpar
        super Token
end
class TCpar
        super Token
end
class TObra
        super Token
end
class TCbra
        super Token
end
class TComma
        super Token
end
class TColumn
        super Token
end
class TQuad
        super Token
end
class TAssign
        super Token
end
abstract class TokenOperator
        super Token
        redef fun to_s
        do
                return "operator '{text}'"
        end
end
class TPluseq
        super TokenOperator
end
class TMinuseq
        super TokenOperator
end
class TDotdotdot
        super TokenOperator
end
class TDotdot
        super TokenOperator
end
class TDot
        super TokenOperator
end
class TPlus
        super TokenOperator
end
class TMinus
        super TokenOperator
end
class TStar
        super TokenOperator
end
class TSlash
        super TokenOperator
end
class TPercent
        super TokenOperator
end
class TEq
        super TokenOperator
end
class TNe
        super TokenOperator
end
class TLt
        super TokenOperator
end
class TLe
        super TokenOperator
end
class TLl
        super TokenOperator
end
class TGt
        super TokenOperator
end
class TGe
        super TokenOperator
end
class TGg
        super TokenOperator
end
class TStarship
        super TokenOperator
end
class TBang
        super TokenOperator
end
class TClassid
        super Token
        redef fun to_s
        do
                do return "type identifier '{text}'"
        end
end
class TId
        super Token
        redef fun to_s
        do
                do return "identifier '{text}'"
        end
end
class TAttrid
        super Token
        redef fun to_s
        do
                do return "attribute '{text}'"
        end
end
abstract class TokenLiteral
        super Token
        redef fun to_s
        do
                do return "literal value '{text}'"
        end
end
class TNumber
        super TokenLiteral
end
class TFloat
        super TokenLiteral
end
class TChar
        super TokenLiteral
end
class TString
        super TokenLiteral
end
class TStartString
        super TokenLiteral
end
class TMidString
        super TokenLiteral
end
class TEndString
        super Token
end
class TBadString
        super Token
        redef fun to_s
        do
                do return "malformed string {text}"
        end
end
class TBadChar
        super Token
        redef fun to_s
        do
                do return "malformed character {text}"
        end
end
class TExternCodeSegment
        super Token
end
class EOF
        super Token
private init noinit do end
        redef fun to_s
        do
                return "end of file"
        end
end
class AError
        super EOF
private init noinit do end
end

class AModule
        super Prod
    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]
end
class AModuledecl
        super Prod
    readable var _n_doc: nullable ADoc = null
    readable var _n_kwmodule: TKwmodule
    readable var _n_name: AModuleName
end
abstract class AImport super Prod end
class AStdImport
        super AImport
    readable var _n_visibility: AVisibility
    readable var _n_kwimport: TKwimport
    readable var _n_name: AModuleName
end
class ANoImport
        super AImport
    readable var _n_visibility: AVisibility
    readable var _n_kwimport: TKwimport
    readable var _n_kwend: TKwend
end
abstract class AVisibility super Prod end
class APublicVisibility
        super AVisibility
end
class APrivateVisibility
        super AVisibility
    readable var _n_kwprivate: TKwprivate
end
class AProtectedVisibility
        super AVisibility
    readable var _n_kwprotected: TKwprotected
end
class AIntrudeVisibility
        super AVisibility
    readable var _n_kwintrude: TKwintrude
end
abstract class AClassdef super Prod
    readable var _n_propdefs: List[APropdef] = new List[APropdef]
end
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_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
end
class ATopClassdef
        super AClassdef
end
class AMainClassdef
        super AClassdef
end
abstract class AClasskind super Prod end
class AConcreteClasskind
        super AClasskind
    readable var _n_kwclass: TKwclass
end
class AAbstractClasskind
        super AClasskind
    readable var _n_kwabstract: TKwabstract
    readable var _n_kwclass: TKwclass
end
class AInterfaceClasskind
        super AClasskind
    readable var _n_kwinterface: TKwinterface
end
class AEnumClasskind
        super AClasskind
    readable var _n_kwenum: TKwenum
end
class AExternClasskind
       super AClasskind
    readable var _n_kwextern: TKwextern
end
class AFormaldef
        super Prod
    readable var _n_id: TClassid
    readable var _n_type: nullable AType = null
end
class ASuperclass
        super Prod
    readable var _n_kwspecial: nullable TKwspecial = null
    readable var _n_kwsuper: nullable TKwsuper = null
    readable var _n_type: AType
end
abstract class APropdef super Prod
    readable var _n_doc: nullable ADoc = null
end
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
end
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
end
class ADeferredMethPropdef
        super AMethPropdef
    readable var _n_kwmeth: TKwmeth
end
class AInternMethPropdef
        super AMethPropdef
    readable var _n_kwmeth: TKwmeth
end
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
class AExternMethPropdef
        super AMethPropdef
        super AExternPropdef
    readable var _n_kwmeth: TKwmeth
end
class AConcreteMethPropdef
        super AMethPropdef
    readable var _n_kwmeth: nullable TKwmeth
    readable var _n_block: nullable AExpr = null
end
abstract class AInitPropdef
        super AMethPropdef
end
class AConcreteInitPropdef
        super AConcreteMethPropdef
        super AInitPropdef
    readable var _n_kwinit: TKwinit
    redef fun hot_location do return n_kwinit.location
end
class AExternInitPropdef
        super AExternPropdef
        super AInitPropdef
    readable var _n_kwnew: TKwnew
end
class AMainMethPropdef
        super AConcreteMethPropdef
end
class AExternCalls
        super Prod
    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
special AExternCall
end
class ALocalPropExternCall
special APropExternCall
    readable var _n_methid: AMethid
end
class AFullPropExternCall
special APropExternCall
    readable var _n_classid: TClassid
    readable var _n_quad: nullable TQuad = null
    readable var _n_methid: AMethid
end
class AInitPropExternCall
special APropExternCall
    readable var _n_classid: TClassid
end
class ASuperExternCall
special AExternCall
    readable var _n_kwsuper: TKwsuper
end
abstract class ACastExternCall
special AExternCall
end
class ACastAsExternCall
special ACastExternCall
    readable var _n_from_type: AType
    readable var _n_kwas: TKwas
    readable var _n_to_type: AType
end
class AAsNullableExternCall
special ACastExternCall
    readable var _n_type: AType
    readable var _n_kwas: TKwas
    readable var _n_kwnullable: TKwnullable
end
class AAsNotNullableExternCall
special ACastExternCall
    readable var _n_type: AType
    readable var _n_kwas: TKwas
    readable var _n_kwnot: TKwnot
    readable var _n_kwnullable: TKwnullable
end
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
abstract class AAble super Prod
    readable var _n_visibility: nullable AVisibility = null
    readable var _n_kwredef: nullable TKwredef = null
end
class AReadAble
        super AAble
    readable var _n_kwreadable: TKwreadable
end
class AWriteAble
        super AAble
    readable var _n_kwwritable: TKwwritable
end
abstract class AMethid super Prod end
class AIdMethid
        super AMethid
    readable var _n_id: TId
end
class APlusMethid
        super AMethid
    readable var _n_plus: TPlus
end
class AMinusMethid
        super AMethid
    readable var _n_minus: TMinus
end
class AStarMethid
        super AMethid
    readable var _n_star: TStar
end
class ASlashMethid
        super AMethid
    readable var _n_slash: TSlash
end
class APercentMethid
        super AMethid
    readable var _n_percent: TPercent
end
class AEqMethid
        super AMethid
    readable var _n_eq: TEq
end
class ANeMethid
        super AMethid
    readable var _n_ne: TNe
end
class ALeMethid
        super AMethid
    readable var _n_le: TLe
end
class AGeMethid
        super AMethid
    readable var _n_ge: TGe
end
class ALtMethid
        super AMethid
    readable var _n_lt: TLt
end
class AGtMethid
        super AMethid
    readable var _n_gt: TGt
end
class ALlMethid
        super AMethid
    readable writable var _n_ll: TLl
end
class AGgMethid
        super AMethid
    readable writable var _n_gg: TGg
end
class ABraMethid
        super AMethid
    readable var _n_obra: TObra
    readable var _n_cbra: TCbra
end
class AStarshipMethid
        super AMethid
    readable var _n_starship: TStarship
end
class AAssignMethid
        super AMethid
    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
end
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]
end
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
end
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]
end
class ALabel
        super Prod
    readable var _n_kwlabel: TKwlabel
    readable var _n_id: TId
end
abstract class AExpr super Prod end
class ABlockExpr
        super AExpr
    readable var _n_expr: List[AExpr] = new List[AExpr]
    readable var _n_kwend: nullable TKwend = null
end
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
end
class AReturnExpr
        super AExpr
    readable var _n_kwreturn: nullable TKwreturn = null
    readable var _n_expr: nullable AExpr = null
end
abstract class ALabelable
        super Prod
    readable var _n_label: nullable ALabel = null
end
class ABreakExpr
        super AExpr
        super ALabelable
    readable var _n_kwbreak: TKwbreak
    readable var _n_expr: nullable AExpr = null
end
class AAbortExpr
        super AExpr
    readable var _n_kwabort: TKwabort
end
class AContinueExpr
        super AExpr
        super ALabelable
    readable var _n_kwcontinue: nullable TKwcontinue = null
    readable var _n_expr: nullable AExpr = null
end
class ADoExpr
        super AExpr
        super ALabelable
    readable var _n_kwdo: TKwdo
    readable var _n_block: nullable AExpr = null
end
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
end
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
end
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
end
class ALoopExpr
        super AExpr
        super ALabelable
    readable var _n_kwloop: TKwloop
    readable var _n_block: nullable AExpr = null
end
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
end
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
end
abstract class AAssignFormExpr
        super AExpr
    readable var _n_assign: TAssign
    readable var _n_value: AExpr
end
abstract class AReassignFormExpr
        super AExpr
    readable var _n_assign_op: AAssignOp
    readable var _n_value: AExpr
end
class AOnceExpr
        super AProxyExpr
    readable var _n_kwonce: TKwonce
end
abstract class ASendExpr
        super AExpr
    readable var _n_expr: AExpr
    readable var _n_closure_defs: List[AClosureDef] = new List[AClosureDef]
end
abstract class ABinopExpr
        super ASendExpr
    readable var _n_expr2: AExpr
end
abstract class ABoolExpr
        super AExpr
end
class AOrExpr
        super ABoolExpr
    readable var _n_expr: AExpr
    readable var _n_expr2: AExpr
end
class AAndExpr
        super ABoolExpr
    readable var _n_expr: AExpr
    readable var _n_expr2: AExpr
end
class AOrElseExpr
        super ABoolExpr
    readable var _n_expr: AExpr
    readable var _n_expr2: AExpr
end
class ANotExpr
        super ABoolExpr
    readable var _n_kwnot: TKwnot
    readable var _n_expr: AExpr
end
class AEqExpr
        super ABinopExpr
end
class AEeExpr
        super ABoolExpr
    readable var _n_expr: AExpr
    readable var _n_expr2: AExpr
end
class ANeExpr
        super ABinopExpr
end
class ALtExpr
        super ABinopExpr
end
class ALeExpr
        super ABinopExpr
end
class ALlExpr
        super ABinopExpr
end
class AGtExpr
        super ABinopExpr
end
class AGeExpr
        super ABinopExpr
end
class AGgExpr
        super ABinopExpr
end
class AIsaExpr
        super ABoolExpr
    readable var _n_expr: AExpr
    readable var _n_type: AType
end
class APlusExpr
        super ABinopExpr
end
class AMinusExpr
        super ABinopExpr
end
class AStarshipExpr
        super ABinopExpr
end
class AStarExpr
        super ABinopExpr
end
class ASlashExpr
        super ABinopExpr
end
class APercentExpr
        super ABinopExpr
end
class AUminusExpr
        super ASendExpr
    readable var _n_minus: TMinus
end
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
end
abstract class AAttrFormExpr
        super AExpr
    readable var _n_expr: AExpr
    readable var _n_id: TAttrid
end
class AAttrExpr
        super AAttrFormExpr
end
class AAttrAssignExpr
        super AAttrFormExpr
        super AAssignFormExpr
end
abstract class ACallFormExpr
        super ASendExpr
    readable var _n_id: TId
    readable var _n_args: AExprs
end
abstract class ASendReassignFormExpr
        super ASendExpr
        super AReassignFormExpr
end
class AAttrReassignExpr
        super AExpr
        super AAttrFormExpr
        super AReassignFormExpr
end
class ACallExpr
        super ACallFormExpr
end
class ACallAssignExpr
        super ACallFormExpr
        super AAssignFormExpr
end
class ACallReassignExpr
        super AExpr
        super ACallFormExpr
        super ASendReassignFormExpr
end
class ASuperExpr
        super AExpr
    readable var _n_qualified: nullable AQualified = null
    readable var _n_kwsuper: TKwsuper
    readable var _n_args: AExprs
end
class AInitExpr
        super ASendExpr
    readable var _n_kwinit: TKwinit
    readable var _n_args: AExprs
end
abstract class ABraFormExpr
        super ASendExpr
    readable var _n_args: AExprs
end
class ABraExpr
        super ABraFormExpr
end
class ABraAssignExpr
        super ABraFormExpr
        super AAssignFormExpr
end
abstract class AVarFormExpr
        super AExpr
    readable var _n_id: TId
end
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]
end
class AVarExpr
        super AVarFormExpr
end
class AVarAssignExpr
        super AVarFormExpr
        super AAssignFormExpr
end
class AVarReassignExpr
        super AVarFormExpr
        super AReassignFormExpr
end
abstract class ARangeExpr
        super AExpr
    readable var _n_expr: AExpr
    readable var _n_expr2: AExpr
end
class ACrangeExpr
        super ARangeExpr
        readable var _n_obra: TObra
        readable var _n_cbra: TCbra
end
class AOrangeExpr
        super ARangeExpr
        readable var _n_obra: TObra
        readable var _n_cbra: TObra
end
class AArrayExpr
        super AExpr
    readable var _n_exprs: AExprs
end
class ASelfExpr
        super AExpr
    readable var _n_kwself: nullable TKwself
end
class AImplicitSelfExpr
        super ASelfExpr
end
class ATrueExpr
        super ABoolExpr
    readable var _n_kwtrue: TKwtrue
end
class AFalseExpr
        super ABoolExpr
    readable var _n_kwfalse: TKwfalse
end
class ANullExpr
        super AExpr
    readable var _n_kwnull: TKwnull
end
class AIntExpr
        super AExpr
    readable var _n_number: TNumber
end
class AFloatExpr
        super AExpr
    readable var _n_float: TFloat
end
class ACharExpr
        super AExpr
    readable var _n_char: TChar
end
abstract class AStringFormExpr
        super AExpr
end
class AStringExpr
        super AStringFormExpr
    readable var _n_string: TString
end
class AStartStringExpr
        super AStringFormExpr
    readable var _n_string: TStartString
end
class AMidStringExpr
        super AStringFormExpr
    readable var _n_string: TMidString
end
class AEndStringExpr
        super AStringFormExpr
    readable var _n_string: TEndString
end
class ASuperstringExpr
        super AExpr
    readable var _n_exprs: List[AExpr] = new List[AExpr]
end
class AParExpr
        super AProxyExpr
    readable var _n_opar: TOpar
    readable var _n_cpar: TCpar
end
abstract class AProxyExpr
        super AExpr
    readable var _n_expr: AExpr
end
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
end
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
end
class AIssetAttrExpr
        super AAttrFormExpr
    readable var _n_kwisset: TKwisset
end
abstract class AExprs
        super Prod 
    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
end
class AListExprs
        super AExprs
end
class AParExprs
        super AExprs
    readable var _n_opar: TOpar
    readable var _n_cpar: TCpar
end
class ABraExprs
        super AExprs
    readable var _n_obra: TObra
    readable var _n_cbra: TCbra
end
abstract class AAssignOp super Prod end
class APlusAssignOp
        super AAssignOp
    readable var _n_pluseq: TPluseq
end
class AMinusAssignOp
        super AAssignOp
    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
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
special 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
end
class AExternCodeBlock
        super Prod
    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
end
class ADoc
        super Prod
    readable var _n_comment: List[TComment] = new List[TComment]
end

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
end