X-Git-Url: http://nitlanguage.org diff --git a/src/parser/nit.sablecc3xx b/src/parser/nit.sablecc3xx index 87d0f84..6455b05 100644 --- a/src/parser/nit.sablecc3xx +++ b/src/parser/nit.sablecc3xx @@ -1,7 +1,7 @@ /* This file is part of NIT ( http://www.nitlanguage.org ). * - * Copyright 2008 Jean Privat + * Copyright 2008-2009 Jean Privat * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. @@ -57,17 +57,16 @@ blank = (' ' | tab)+; eol = eol_helper; comment = '#' any* eol_helper; -kwpackage = 'package'; +kwmodule = 'package'|'module'; kwimport = 'import'; kwclass = 'class'; kwabstract = 'abstract'; kwinterface = 'interface'; -kwuniversal = 'universal'; +kwenum = 'universal'|'enum'; kwspecial = 'special'; kwend = 'end'; -kwmeth = 'meth'; +kwmeth = 'fun'; kwtype = 'type'; -kwattr = 'attr'; kwinit = 'init'; kwredef = 'redef'; kwis = 'is'; @@ -84,6 +83,7 @@ kwif = 'if'; kwthen = 'then'; kwelse = 'else'; kwwhile = 'while'; +kwloop = 'loop'; kwfor = 'for'; kwin = 'in'; kwand = 'and'; @@ -103,7 +103,9 @@ kwtrue = 'true'; kwfalse = 'false'; kwnull = 'null'; kwas = 'as'; -kwwith = 'with'; +kwnullable = 'nullable'; +kwisset = 'isset'; +kwlabel = 'label'; opar = '('; cpar = ')'; @@ -127,9 +129,12 @@ eq = '=='; ne = '!='; lt = '<'; le = '<='; +ll = '<<'; gt = '>'; ge = '>='; +gg = '>>'; starship = '<=>'; +bang='!'; classid = uppercase letter*; id = lowercase letter*; @@ -156,36 +161,38 @@ Productions /* MODULES *******************************************************************/ module - = packagedecl? [imports]:import* [classdefs]:classdef* implicit_top_class? implicit_main_class? {-> New module(packagedecl, [imports.import],[classdefs.classdef,implicit_top_class.classdef,implicit_main_class.classdef])}; + = moduledecl? [imports]:import* [classdefs]:classdef* implicit_top_class? implicit_main_class? {-> New module(moduledecl, [imports.import],[classdefs.classdef,implicit_top_class.classdef,implicit_main_class.classdef])}; -packagedecl - = [doc]:no kwpackage no id [n2]:n1 {-> New packagedecl(doc.doc, kwpackage, id)}; +moduledecl + = [doc]:no kwmodule no id [n2]:n1 {-> New moduledecl(doc.doc, kwmodule, id)}; import - = [doc]:no visibility kwimport no id [n2]:n1 {-> New import(visibility, kwimport, id)} + = {std} [doc]:no visibility kwimport no id [n2]:n1 {-> New import.std(visibility, kwimport, id)} | {no} [doc]:no visibility kwimport no kwend [n2]:n1 {-> New import.no(visibility, kwimport, kwend)} ; implicit_top_class {-> classdef} - = tl_propdefs {-> New classdef.top([tl_propdefs.propdef])}; + = propdefs_toplevel+ {-> New classdef.top([propdefs_toplevel.propdef])}; implicit_main_class {-> classdef?} = implicit_main_meth {-> New classdef.main([implicit_main_meth.propdef])} | {null} n {-> Null} ; implicit_main_meth {-> propdef} - = [doc]:no stmts no {-> New propdef.main_meth(Null, stmts.expr)}; + = [doc]:no stmts {-> New propdef.main_meth(Null, stmts.expr)} + | {n} [doc]:no stmtsn {-> New propdef.main_meth(Null, stmtsn.expr)} + ; /* CLASSES *******************************************************************/ classdef - = [doc]:no redef visibility classkind no classid formaldefs? [specials]:special* propdefs? [n2]:no kwend {-> New classdef(doc.doc, redef.kwredef, visibility, classkind, classid, [formaldefs.formaldef], [specials.superclass], [propdefs.propdef])}; + = [doc]:no redef visibility classkind no classid formaldefs? [specials]:special* propdefs* [n2]:no kwend {-> New classdef.std(doc.doc, redef.kwredef, visibility, classkind, classid, [formaldefs.formaldef], [specials.superclass], [propdefs.propdef])}; redef {-> kwredef?} = kwredef? {-> kwredef}; classkind = {concrete} kwclass | {abstract} kwabstract kwclass | {interface} kwinterface - | {universal} kwuniversal + | {enum} kwenum ; formaldefs {-> formaldef*} @@ -196,38 +203,34 @@ formaldef = classid typing? {-> New formaldef(classid, typing.type)}; special {-> superclass} - = no kwspecial [n2]:no type {-> New superclass(kwspecial, type)}; - -propdefs {-> propdef*} - = propdef n1 propdefs_tail* {-> [propdef, propdefs_tail.propdef]}; -propdefs_tail {-> propdef} - = propdef n1 {-> propdef}; -propdef - = {attr} [doc]:no readable writable redef visibility kwattr attrid typing? {-> New propdef.attr(doc.doc, readable.able, writable.able, redef.kwredef, visibility, kwattr, attrid, typing.type, Null)} - | {attr2} [doc]:no readable writable redef visibility kwattr attrid typing? assign [n2]:no expr {-> New propdef.attr(doc.doc, readable.able, writable.able, redef.kwredef, visibility, kwattr, attrid, typing.type, expr)} - | {deferred} [doc]:no redef visibility kwmeth methid signature kwis kwabstract {-> New propdef.deferred_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature)} - | {intern} [doc]:no redef visibility kwmeth methid signature kwis kwintern {-> New propdef.intern_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature)} - | {extern} [doc]:no redef visibility kwmeth methid signature kwis kwextern string? {-> New propdef.extern_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature, string)} - | {meth} [doc]:no redef visibility kwmeth methid signature kwdo stmtso kwend? {-> New propdef.concrete_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature, stmtso.expr)} - | {init} [doc]:no redef visibility kwinit methid? signature kwdo stmtso kwend? {-> New propdef.concrete_init(doc.doc, redef.kwredef, visibility, kwinit, methid, signature, stmtso.expr)} - | {type} [doc]:no redef visibility kwtype classid typing {-> New propdef.type(doc.doc, redef.kwredef, visibility, kwtype, classid, typing.type)} + = {special} no kwspecial [n2]:no type {-> New superclass(kwspecial, Null, type)} + | {super} no kwsuper [n2]:no type {-> New superclass(Null, kwsuper, type)} + ; + +propdefs~toplevel {-> propdef} + = propdef~toplevel n1 {-> propdef~toplevel.propdef} ; -readable {-> able?} +propdef~toplevel {-> propdef} + = {meth} [doc]:no redef visibility kwmeth methid signature kwdo stmtso kwend? {-> New propdef.concrete_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature, stmtso.expr)} + | {assign_return} [doc]:no redef visibility kwmeth methid signature_withret assign no assign_return {-> New propdef.concrete_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature_withret.signature, assign_return.expr)} +!toplevel| {deferred} [doc]:no redef visibility kwmeth methid signature kwis kwabstract {-> New propdef.deferred_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature)} +!toplevel| {intern} [doc]:no redef visibility kwmeth methid signature kwis kwintern {-> New propdef.intern_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature)} + | {extern} [doc]:no redef visibility kwmeth methid signature kwis kwextern string? {-> New propdef.extern_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature, string)} +!toplevel| {var} [doc]:no readable? writable? redef visibility kwvar attrid typing? {-> New propdef.attr(doc.doc, readable.able, writable.able, redef.kwredef, visibility, kwvar, attrid, Null, typing.type, Null)} +!toplevel| {var2} [doc]:no readable? writable? redef visibility kwvar attrid typing? assign [n2]:no expr {-> New propdef.attr(doc.doc, readable.able, writable.able, redef.kwredef, visibility, kwvar, attrid, Null, typing.type, expr)} +!toplevel| {var3} [doc]:no redef visibility kwvar id typing? writable2? {-> New propdef.attr(doc.doc, Null, writable2.able, redef.kwredef, visibility, kwvar, Null, id, typing.type, Null)} +!toplevel| {var4} [doc]:no redef visibility kwvar id typing? writable2? assign [n2]:no expr {-> New propdef.attr(doc.doc, Null, writable2.able, redef.kwredef, visibility, kwvar, Null, id, typing.type, expr)} +!toplevel| {init} [doc]:no redef visibility kwinit methid? signature kwdo stmtso kwend? {-> New propdef.concrete_init(doc.doc, redef.kwredef, visibility, kwinit, methid, signature, stmtso.expr)} +!toplevel| {type} [doc]:no redef visibility kwtype classid typing {-> New propdef.type(doc.doc, redef.kwredef, visibility, kwtype, classid, typing.type)} + ; +readable {-> able} = redef kwreadable {-> New able.read(redef.kwredef, kwreadable)} - | {empty} {-> Null} ; -writable {-> able?} - = redef kwwritable {-> New able.write(redef.kwredef, kwwritable)} - | {empty} {-> Null} +writable {-> able} + = redef kwwritable {-> New able.write(redef.kwredef, Null, kwwritable)} ; - -tl_propdefs {-> propdef*} - = tl_propdef n1 tl_propdefs_tail* {-> [tl_propdef.propdef, tl_propdefs_tail.propdef]}; -tl_propdefs_tail {-> propdef} - = tl_propdef n1 {-> tl_propdef.propdef}; -tl_propdef {-> propdef} - = {extern} [doc]:no redef visibility kwmeth methid signature kwis kwextern string? {-> New propdef.extern_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature, string)} - | {meth} [doc]:no redef visibility kwmeth methid signature kwdo stmtso {-> New propdef.concrete_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature, stmtso.expr)} +writable2 {-> able} + = redef visibility kwwritable {-> New able.write(redef.kwredef, visibility, kwwritable)} ; visibility @@ -237,28 +240,32 @@ visibility | {intrude} kwintrude no {-> New visibility.intrude(kwintrude)} ; -methid - = {id} id - | {plus} plus - | {minus} minus - | {star} star - | {slash} slash - | {percent} percent - | {eq} eq - | {ne} ne - | {le} le - | {ge} ge - | {lt} lt - | {gt} gt - | {bra} obra cbra - | {starship} starship - | {assign} id assign - | {braassign} obra cbra assign - ; - -signature - = params? typing? closure_decls {-> New signature([params.param], typing.type, [closure_decls.closure_decl])} - | {noclosures} params? typing? no {-> New signature([params.param], typing.type, [])} +methid {-> methid} + = {id} id {-> New methid.id(id)} + | {plus} plus {-> New methid.plus(plus)} + | {minus} minus {-> New methid.minus(minus)} + | {star} star {-> New methid.star(star)} + | {slash} slash {-> New methid.slash(slash)} + | {percent} percent {-> New methid.percent(percent)} + | {eq} eq {-> New methid.eq(eq)} + | {ne} ne {-> New methid.ne(ne)} + | {le} le {-> New methid.le(le)} + | {ge} ge {-> New methid.ge(ge)} + | {lt} lt {-> New methid.lt(lt)} + | {gt} gt {-> New methid.gt(gt)} + | {ll} ll {-> New methid.ll(ll)} + | {gg} gg {-> New methid.gg(gg)} + | {bra} obra cbra {-> New methid.bra(obra, cbra)} + | {starship} starship {-> New methid.starship(starship)} + | {assign} id assign {-> New methid.assign(id, assign)} + | {braassign} obra cbra assign {-> New methid.braassign(obra, cbra, assign)} + ; + +signature~withret {-> signature} + = params? typing closure_decls {-> New signature([params.param], typing.type, [closure_decls.closure_decl])} + | {noclosures} params? typing no {-> New signature([params.param], typing.type, [])} +!withret| {noret} params? closure_decls {-> New signature([params.param], Null, [closure_decls.closure_decl])} +!withret| {noretnoclosures} params? no {-> New signature([params.param], Null, [])} ; signature_noclosures {-> signature} @@ -278,16 +285,21 @@ param closure_decls {->closure_decl*} = no closure_decl+ {-> [closure_decl]}; closure_decl - = kwwith kwbreak? [no2]:no id signature_noclosures n {-> New closure_decl(kwwith, kwbreak, id, signature_noclosures.signature, Null)} - | {optionnal} kwwith kwbreak? [no2]:no id signature_noclosures kwdo stmtso n {-> New closure_decl(kwwith, kwbreak, id, signature_noclosures.signature, stmtso.expr)} + = kwbreak? bang id signature_noclosures n {-> New closure_decl(kwbreak, bang, id, signature_noclosures.signature, Null)} + | {optionnal} kwbreak? bang id signature_noclosures kwdo stmtso n {-> New closure_decl(kwbreak, bang, id, signature_noclosures.signature, stmtso.expr)} + | {assign} kwbreak? bang id signature_noclosures assign no assign_continue n {-> New closure_decl(kwbreak, bang, id, signature_noclosures.signature, assign_continue.expr)} + ; + +assign_return{-> expr} + = expr_final {-> New expr.return(Null, expr_final.expr)} ; + /* TYPES *********************************************************************/ -type/*B3*//*B*/ {-> type} - = {simple} classid {-> New type(classid, [])} -/*N*/ | {generic} classid obra no types [n2]:no cbra {-> New type(classid, [types.type])} +type~nobra {-> type} + = {simple} kwnullable? classid {-> New type(kwnullable, classid, [])} +!nobra | {generic} kwnullable? classid obra no types [n2]:no cbra {-> New type(kwnullable, classid, [types.type])} ; -/*E*/ types {-> type*} = type types_tail* {-> [type, types_tail.type]}; types_tail {-> type} @@ -296,164 +308,193 @@ typing {-> type} = column no type {-> type}; /* STATMENTS *****************************************************************/ -stmtso/*B2*/ {-> expr?} - = {oneline} stmt/*B2*/ {-> stmt/*B2*/.expr} - | {block} n stmts [n2]:n kwend {-> stmts.expr} - | {emptyblock} n kwend {-> Null} - | {emptyoneline} kwend {-> Null} +stmtso~withelse~withend {-> expr?} + = {block} n stmtsn kwend {-> stmtsn.expr} + | {emptyblock} n kwend {-> New expr.block([])} + | {emptyoneline} kwend {-> New expr.block([])} +!withend| {oneline} stmt~withelse {-> stmt~withelse.expr} ; stmts {-> expr} = stmt stmts_tail* {-> New expr.block([stmt.expr, stmts_tail.expr])}; +stmtsn {-> expr} + = stmt stmts_tail* n {-> New expr.block([stmt.expr, stmts_tail.expr])}; stmts_tail {-> expr} = n stmt {-> stmt.expr}; -stmt/*B2*/ {-> expr} - = {vardecl} vardecl/*B2*/ {-> vardecl/*B2*/.expr} - | {assign} assignment/*B2*/ {-> assignment/*B2*/.expr} - | {return} kwreturn expr_final/*B2*/? {-> New expr.return(kwreturn, expr_final/*B2*/.expr)} - | {break} kwbreak expr_final/*B2*/? {-> New expr.break(kwbreak, expr_final/*B2*/.expr)} +stmt~withelse {-> expr} + = {vardecl} vardecl~withelse {-> vardecl~withelse.expr} + | {assign} assignment~withelse {-> assignment~withelse.expr} + | {return} kwreturn expr_final~withelse? {-> New expr.return(kwreturn, expr_final~withelse.expr)} + | {break} kwbreak label? expr_final~withelse? {-> New expr.break(kwbreak, label, expr_final~withelse.expr)} | {abort} kwabort {-> New expr.abort(kwabort)} - | {continue} kwcontinue expr_final/*B2*/? {-> New expr.continue(kwcontinue, expr_final/*B2*/.expr)} - | {do} do/*B2*/ {-> do/*B2*/.expr} - | {if} if/*B2*/ {-> if/*B2*/.expr} - | {while} while/*B2*/ {-> while/*B2*/.expr} - | {for} for/*B2*/ {-> for/*B2*/.expr} - | {assert} assert/*B2*/ {-> assert/*B2*/.expr} -// | {expr} expr {-> expr.expr} - | {call} recv id args_nopar closure_defs/*B2*/? {-> New expr.call(recv.expr, id, [args_nopar.expr], [closure_defs/*B2*/.closure_def])} + | {continue} kwcontinue label? expr_final~withelse? {-> New expr.continue(kwcontinue, label, expr_final~withelse.expr)} + | {do} do~withelse {-> do~withelse.expr} + | {if} if~withelse {-> if~withelse.expr} + | {while} while~withelse {-> while~withelse.expr} + | {loop} loop~withelse {-> loop~withelse.expr} + | {for} for~withelse {-> for~withelse.expr} + | {assert} assert~withelse {-> assert~withelse.expr} + | {call} recv id args_nopar closure_defs~withelse? {-> New expr.call(recv.expr, id, [args_nopar.expr], [closure_defs~withelse.closure_def])} | {super} qualified? kwsuper args_nopar {-> New expr.super(qualified, kwsuper, [args_nopar.expr])} | {init} recv kwinit args_nopar {-> New expr.init(recv.expr, kwinit, [args_nopar.expr])} ; -closure_defs/*B2*/ {-> closure_def*} - = {one} closure_def_last/*B2*/ {-> [closure_def_last/*B2*/.closure_def]} - | closure_def closure_defs/*B2*/ {-> [closure_def, closure_defs/*B2*/.closure_def]} +label= kwlabel id; + +closure_defs~withelse {-> closure_def*} + = {one} closure_def_last~withelse {-> [closure_def_last~withelse.closure_def]} + | closure_def closure_defs~withelse {-> [closure_def, closure_defs~withelse.closure_def]} ; -closure_def_last/*B2*/ {-> closure_def} - = kwwith idlist? kwdo stmtso/*B2*/ {-> New closure_def(kwwith, [idlist.id], kwdo, stmtso/*B2*/.expr)} +closure_def_last~withelse {-> closure_def} + = bang [id]:closure_id idlist? kwdo stmtso_withend label {-> New closure_def(bang, id, [idlist.id], kwdo, stmtso_withend.expr, label)} + | {nolabel} bang [id]:closure_id idlist? kwdo stmtso~withelse {-> New closure_def(bang, id, [idlist.id], kwdo, stmtso~withelse.expr, Null)} + | {assign} bang [id]:closure_id idlist? assign no assign_continue~withelse {-> New closure_def(bang, id, [idlist.id], Null, assign_continue~withelse.expr, Null)} ; closure_def {-> closure_def} - = kwwith idlist? kwdo n stmts [n2]:n {-> New closure_def(kwwith, [idlist.id], kwdo, stmts.expr)} - | {empty} kwwith idlist? kwdo n {-> New closure_def(kwwith, [idlist.id], kwdo, Null)} + = bang [id]:closure_id idlist? kwdo n stmtsn {-> New closure_def(bang, id, [idlist.id], kwdo, stmtsn.expr, Null)} + | {empty} bang [id]:closure_id idlist? kwdo n {-> New closure_def(bang, id, [idlist.id], kwdo, Null, Null)} + ; +closure_id + = {simple} id + | {break} kwbreak ; -vardecl/*B2*/{-> expr} +assign_continue~withelse{-> expr} + = expr_final~withelse {-> New expr.continue(Null, Null, expr_final~withelse.expr)} + ; + +vardecl~withelse{-> expr} = kwvar id typing? {-> New expr.vardecl(kwvar, id, typing.type, Null, Null)} - | {assign} kwvar id typing? assign no expr_final/*B2*/ {-> New expr.vardecl(kwvar, id, typing.type, assign, expr_final/*B2*/.expr)} + | {assign} kwvar id typing? assign no expr_final~withelse {-> New expr.vardecl(kwvar, id, typing.type, assign, expr_final~withelse.expr)} ; -assignment/*B2*/ {-> expr} - = {attr} recv attrid assign expr_final/*B2*/ {-> New expr.attr_assign(recv.expr, attrid, assign, expr_final/*B2*/.expr)} - | {call} recv id args assign expr_final/*B2*/ {-> New expr.call_assign(recv.expr, id, [args.expr], assign, expr_final/*B2*/.expr)} - | {bra} expr_atom braargs assign expr_final/*B2*/ {-> New expr.bra_assign(expr_atom.expr, [braargs.expr], assign, expr_final/*B2*/.expr)} - | {attr_re} recv attrid assign_op expr_final/*B2*/ {-> New expr.attr_reassign(recv.expr, attrid, assign_op, expr_final/*B2*/.expr)} - | {call_re} recv id args assign_op expr_final/*B2*/ {-> New expr.call_reassign(recv.expr, id, [args.expr], assign_op, expr_final/*B2*/.expr)} - | {bra_re} expr_atom braargs assign_op expr_final/*B2*/ {-> New expr.bra_reassign(expr_atom.expr, [braargs.expr], assign_op, expr_final/*B2*/.expr)} +assignment~withelse {-> expr} + = {attr} recv attrid assign expr_final~withelse {-> New expr.attr_assign(recv.expr, attrid, assign, expr_final~withelse.expr)} + | {call} recv id args assign expr_final~withelse {-> New expr.call_assign(recv.expr, id, [args.expr], assign, expr_final~withelse.expr)} + | {bra} expr_atom braargs assign expr_final~withelse {-> New expr.bra_assign(expr_atom.expr, [braargs.expr], assign, expr_final~withelse.expr)} + | {attr_re} recv attrid assign_op expr_final~withelse {-> New expr.attr_reassign(recv.expr, attrid, assign_op, expr_final~withelse.expr)} + | {call_re} recv id args assign_op expr_final~withelse {-> New expr.call_reassign(recv.expr, id, [args.expr], assign_op, expr_final~withelse.expr)} + | {bra_re} expr_atom braargs assign_op expr_final~withelse {-> New expr.bra_reassign(expr_atom.expr, [braargs.expr], assign_op, expr_final~withelse.expr)} ; assign_op = {plus} pluseq | {minus} minuseq ; -do/*B2*/ {-> expr} - = kwdo stmtso/*B2*/ {-> New expr.do(kwdo, stmtso/*B2*/.expr)} +do~withelse {-> expr} + = kwdo stmtso_withend label {-> New expr.do(kwdo, stmtso_withend.expr, label)} + | {nolabel} kwdo stmtso~withelse {-> New expr.do(kwdo, stmtso~withelse.expr, Null)} ; -if/*B2*/ {-> expr} - = {onelineelse} kwif no expr [n2]:no kwthen stmt_withelse kwelse stmtso/*B2*/ {-> New expr.if(kwif, expr, stmt_withelse.expr, stmtso/*B2*/.expr)} -/*N2*/ | {oneline} kwif no expr [n2]:no kwthen stmt {-> New expr.if(kwif, expr, stmt.expr, Null)} -/*N2*/ | {block} kwif no expr [n2]:no kwthen [n3]:n stmts [n4]:n elsepartblock {-> New expr.if(kwif, expr, stmts.expr, elsepartblock.expr)} -/*N2*/ | {emptyblock} kwif no expr [n2]:no kwthen [n3]:n? elsepartblock {-> New expr.if(kwif, expr, Null, elsepartblock.expr)} +if~withelse {-> expr} + = {onelineelse} kwif no expr [n2]:no kwthen stmt_withelse kwelse stmtso~withelse {-> New expr.if(kwif, expr, stmt_withelse.expr, stmtso~withelse.expr)} +!withelse | {oneline} kwif no expr [n2]:no kwthen stmt {-> New expr.if(kwif, expr, stmt.expr, Null)} +!withelse | {block} kwif no expr [n2]:no kwthen [n3]:n stmtsn elsepartblock {-> New expr.if(kwif, expr, stmtsn.expr, elsepartblock.expr)} +!withelse | {emptyblock} kwif no expr [n2]:no kwthen [n3]:n? elsepartblock {-> New expr.if(kwif, expr, Null, elsepartblock.expr)} ; elsepartblock {-> expr?} = {else} kwelse stmtso {-> stmtso.expr} | {empty} kwend {-> Null} ; -while/*B2*/ {-> expr} - = kwwhile no expr [n2]:no kwdo stmtso/*B2*/ {-> New expr.while(kwwhile, expr, kwdo, stmtso/*B2*/.expr)}; - -for/*B2*/ {-> expr} - = for_vardecl [n4]:no kwdo stmtso/*B2*/ {-> New expr.for(for_vardecl.expr, kwdo, stmtso/*B2*/.expr)}; -for_vardecl {-> expr} - = kwfor no id [n2]:no kwin [n3]:no expr {-> New expr.for_vardecl(kwfor, id, expr)}; +loop~withelse {-> expr} + = kwloop stmtso_withend label {-> New expr.loop(kwloop, stmtso_withend.expr, label)} + | {nolabel} kwloop stmtso~withelse {-> New expr.loop(kwloop, stmtso~withelse.expr, Null)} + ; + +while~withelse {-> expr} + = kwwhile no expr [n2]:no kwdo stmtso_withend label {-> New expr.while(kwwhile, expr, kwdo, stmtso_withend.expr, label)} + | {nolabel} kwwhile no expr [n2]:no kwdo stmtso~withelse {-> New expr.while(kwwhile, expr, kwdo, stmtso~withelse.expr, Null)} + ; + +for~withelse {-> expr} + = kwfor no [ids]:idlist [n2]:no kwin [n3]:no expr [n4]:no kwdo stmtso_withend label {-> New expr.for(kwfor, [ids.id], expr, kwdo, stmtso_withend.expr, label)} + | {nolabel} kwfor no [ids]:idlist [n2]:no kwin [n3]:no expr [n4]:no kwdo stmtso~withelse {-> New expr.for(kwfor, [ids.id], expr, kwdo, stmtso~withelse.expr, Null)} + ; -assert/*B2*/ {-> expr} - = kwassert assertid? expr_final/*B2*/ {-> New expr.assert(kwassert, assertid.id, expr_final/*B2*/.expr)}; +assert~withelse {-> expr} + = {else} kwassert assertid? expr_final_withelse kwelse stmtso~withelse {-> New expr.assert(kwassert, assertid.id, expr_final_withelse.expr, stmtso~withelse.expr)} +!withelse| {noelse} kwassert assertid? expr_final {-> New expr.assert(kwassert, assertid.id, expr_final.expr, Null)} + ; assertid {-> id} = id column {-> id}; /* EXPRESSIONS ***************************************************************/ -expr_final/*B3*//*B2*//*B*/ {-> expr} - = expr/*B3*//*B*/ {-> expr/*B3*//*B*/.expr} - | {closure_call} recv/*B*/ id args closure_defs/*B2*/ {-> New expr.call(recv/*B*/.expr, id, [args.expr], [closure_defs/*B2*/.closure_def])} -/*N*//*N3*/ | {closure_bra} expr_atom braargs closure_defs/*B2*/ {-> New expr.bra(expr_atom.expr, [braargs.expr], [closure_defs/*B2*/.closure_def])} +expr_final~nopar~withelse~nobra {-> expr} + = expr~nopar~nobra {-> expr~nopar~nobra.expr} + | {closure_call} recv~nobra id args closure_defs~withelse {-> New expr.call(recv~nobra.expr, id, [args.expr], [closure_defs~withelse.closure_def])} +!nobra!nopar | {closure_bra} expr_atom braargs closure_defs~withelse {-> New expr.bra(expr_atom.expr, [braargs.expr], [closure_defs~withelse.closure_def])} ; -expr/*B3*//*B*/ {-> expr} - = expr_and/*B3*//*B*/ {-> expr_and/*B3*//*B*/.expr} - | {ifexpr} kwif [n1]:no expr [n2]:no kwthen [n3]:no [then]:expr [n4]:no kwelse [n5]:no [else]:expr/*B3*//*B*/ {-> New expr.ifexpr(kwif, expr, kwthen, then, kwelse, else.expr)} +expr~nopar~nobra {-> expr} + = expr_and~nopar~nobra {-> expr_and~nopar~nobra.expr} + | {ifexpr} kwif [n1]:no expr [n2]:no kwthen [n3]:no [then]:expr [n4]:no kwelse [n5]:no [else]:expr~nopar~nobra {-> New expr.ifexpr(kwif, expr, kwthen, then, kwelse, else.expr)} ; -expr_and/*B3*//*B*/ {-> expr} - = expr_not/*B3*//*B*/ {-> expr_not/*B3*//*B*/.expr} - | {or} expr_and/*B3*//*B*/ kwor no expr_not/*B3*//*B*/ {-> New expr.or(expr_and/*B3*//*B*/.expr, expr_not/*B3*//*B*/.expr)} - | {and} expr_and/*B3*//*B*/ kwand no expr_not/*B3*//*B*/ {-> New expr.and(expr_and/*B3*//*B*/.expr, expr_not/*B3*//*B*/.expr)} +expr_and~nopar~nobra {-> expr} + = expr_not~nopar~nobra {-> expr_not~nopar~nobra.expr} + | {or} expr_and~nopar~nobra kwor no expr_not~nopar~nobra {-> New expr.or(expr_and~nopar~nobra.expr, expr_not~nopar~nobra.expr)} + | {and} expr_and~nopar~nobra kwand no expr_not~nopar~nobra {-> New expr.and(expr_and~nopar~nobra.expr, expr_not~nopar~nobra.expr)} + | {or_else} expr_and~nopar~nobra kwor kwelse no expr_not~nopar~nobra {-> New expr.or_else(expr_and~nopar~nobra.expr, expr_not~nopar~nobra.expr)} ; -expr_not/*B3*//*B*/ {-> expr} - = expr_eq/*B3*//*B*/ {-> expr_eq/*B3*//*B*/.expr} - | {not} kwnot no expr_not/*B3*//*B*/ {-> New expr.not(kwnot, expr_not/*B3*//*B*/.expr)} +expr_not~nopar~nobra {-> expr} + = expr_eq~nopar~nobra {-> expr_eq~nopar~nobra.expr} + | {not} kwnot no expr_not~nopar~nobra {-> New expr.not(kwnot, expr_not~nopar~nobra.expr)} ; -expr_eq/*B3*//*B*/ {-> expr} - = expr_add/*B3*//*B*/ {-> expr_add/*B3*//*B*/.expr} - | {eq} expr_add/*B3*//*B*/ eq no [expr2]:expr_add/*B3*//*B*/ {-> New expr.eq(expr_add/*B3*//*B*/.expr, expr2.expr)} - | {ee} expr_add/*B3*//*B*/ kwis no [expr2]:expr_add/*B3*//*B*/ {-> New expr.ee(expr_add/*B3*//*B*/.expr, expr2.expr)} - | {ne} expr_add/*B3*//*B*/ ne no [expr2]:expr_add/*B3*//*B*/ {-> New expr.ne(expr_add/*B3*//*B*/.expr, expr2.expr)} - | {lt} expr_add/*B3*//*B*/ lt no [expr2]:expr_add/*B3*//*B*/ {-> New expr.lt(expr_add/*B3*//*B*/.expr, expr2.expr)} - | {le} expr_add/*B3*//*B*/ le no [expr2]:expr_add/*B3*//*B*/ {-> New expr.le(expr_add/*B3*//*B*/.expr, expr2.expr)} - | {gt} expr_add/*B3*//*B*/ gt no [expr2]:expr_add/*B3*//*B*/ {-> New expr.gt(expr_add/*B3*//*B*/.expr, expr2.expr)} - | {ge} expr_add/*B3*//*B*/ ge no [expr2]:expr_add/*B3*//*B*/ {-> New expr.ge(expr_add/*B3*//*B*/.expr, expr2.expr)} - | {starship} expr_add/*B3*//*B*/ starship no [expr2]:expr_add/*B3*//*B*/ {-> New expr.starship(expr_add/*B3*//*B*/.expr, expr2.expr)} - | {isa} expr_add/*B3*//*B*/ kwisa no type/*B3*//*B*/ {-> New expr.isa(expr_add/*B3*//*B*/.expr, type/*B3*//*B*/.type)} +expr_eq~nopar~nobra {-> expr} + = expr_add~nopar~nobra {-> expr_add~nopar~nobra.expr} + | {eq} expr_add~nopar~nobra eq no [expr2]:expr_add~nopar~nobra {-> New expr.eq(expr_add~nopar~nobra.expr, expr2.expr)} + | {ee} expr_add~nopar~nobra kwis no [expr2]:expr_add~nopar~nobra {-> New expr.ee(expr_add~nopar~nobra.expr, expr2.expr)} + | {ne} expr_add~nopar~nobra ne no [expr2]:expr_add~nopar~nobra {-> New expr.ne(expr_add~nopar~nobra.expr, expr2.expr)} + | {lt} expr_add~nopar~nobra lt no [expr2]:expr_add~nopar~nobra {-> New expr.lt(expr_add~nopar~nobra.expr, expr2.expr)} + | {le} expr_add~nopar~nobra le no [expr2]:expr_add~nopar~nobra {-> New expr.le(expr_add~nopar~nobra.expr, expr2.expr)} + | {ll} expr_eq~nopar~nobra ll no [expr2]:expr_add~nopar~nobra {-> New expr.ll(expr_eq~nopar~nobra.expr, expr2.expr)} + | {gt} expr_add~nopar~nobra gt no [expr2]:expr_add~nopar~nobra {-> New expr.gt(expr_add~nopar~nobra.expr, expr2.expr)} + | {ge} expr_add~nopar~nobra ge no [expr2]:expr_add~nopar~nobra {-> New expr.ge(expr_add~nopar~nobra.expr, expr2.expr)} + | {gg} expr_eq~nopar~nobra gg no [expr2]:expr_add~nopar~nobra {-> New expr.gg(expr_eq~nopar~nobra.expr, expr2.expr)} + | {starship} expr_add~nopar~nobra starship no [expr2]:expr_add~nopar~nobra {-> New expr.starship(expr_add~nopar~nobra.expr, expr2.expr)} + | {isa} expr_add~nopar~nobra kwisa no type~nobra {-> New expr.isa(expr_add~nopar~nobra.expr, type~nobra.type)} ; -expr_add/*B3*//*B*/ {-> expr} - = expr_mul/*B3*//*B*/ {-> expr_mul/*B3*//*B*/.expr} - | {plus} expr_add/*B3*//*B*/ plus no [expr2]:expr_mul/*B3*//*B*/ {-> New expr.plus(expr_add/*B3*//*B*/.expr, expr2.expr)} - | {minus} expr_add/*B3*//*B*/ minus no [expr2]:expr_mul/*B3*//*B*/ {-> New expr.minus(expr_add/*B3*//*B*/.expr, expr2.expr)} +expr_add~nopar~nobra {-> expr} + = expr_mul~nopar~nobra {-> expr_mul~nopar~nobra.expr} + | {plus} expr_add~nopar~nobra plus no [expr2]:expr_mul~nopar~nobra {-> New expr.plus(expr_add~nopar~nobra.expr, expr2.expr)} + | {minus} expr_add~nopar~nobra minus no [expr2]:expr_mul~nopar~nobra {-> New expr.minus(expr_add~nopar~nobra.expr, expr2.expr)} ; -expr_mul/*B3*//*B*/ {-> expr} - = expr_minus/*B3*//*B*/ {-> expr_minus/*B3*//*B*/.expr} - | {star} expr_mul/*B3*//*B*/ star no [expr2]:expr_minus/*B3*//*B*/ {-> New expr.star(expr_mul/*B3*//*B*/.expr, expr2.expr)} - | {slash} expr_mul/*B3*//*B*/ slash no [expr2]:expr_minus/*B3*//*B*/ {-> New expr.slash(expr_mul/*B3*//*B*/.expr, expr2.expr)} - | {percent} expr_mul/*B3*//*B*/ percent no [expr2]:expr_minus/*B3*//*B*/ {-> New expr.percent(expr_mul/*B3*//*B*/.expr, expr2.expr)} +expr_mul~nopar~nobra {-> expr} + = expr_minus~nopar~nobra {-> expr_minus~nopar~nobra.expr} + | {star} expr_mul~nopar~nobra star no [expr2]:expr_minus~nopar~nobra {-> New expr.star(expr_mul~nopar~nobra.expr, expr2.expr)} + | {slash} expr_mul~nopar~nobra slash no [expr2]:expr_minus~nopar~nobra {-> New expr.slash(expr_mul~nopar~nobra.expr, expr2.expr)} + | {percent} expr_mul~nopar~nobra percent no [expr2]:expr_minus~nopar~nobra {-> New expr.percent(expr_mul~nopar~nobra.expr, expr2.expr)} ; -expr_minus/*B3*//*B*/ {-> expr} - = expr_new/*B3*//*B*/ {-> expr_new/*B3*//*B*/.expr} - | {minus} minus no expr_minus/*B3*//*B*/ {-> New expr.uminus(minus, expr_minus/*B3*//*B*/.expr)} - | {once} kwonce no expr_minus/*B3*//*B*/ {-> New expr.once(kwonce, expr_minus/*B3*//*B*/.expr)} +expr_minus~nopar~nobra {-> expr} + = expr_new~nopar~nobra {-> expr_new~nopar~nobra.expr} + | {minus} minus no expr_minus~nopar~nobra {-> New expr.uminus(minus, expr_minus~nopar~nobra.expr)} + | {once} kwonce no expr_minus~nopar~nobra {-> New expr.once(kwonce, expr_minus~nopar~nobra.expr)} ; -expr_new/*B3*//*B*/ {-> expr} - = expr_atom/*B3*//*B*/ {-> expr_atom/*B3*//*B*/.expr} - | {new} kwnew no type/*B3*//*B*/ args {-> New expr.new(kwnew, type/*B3*//*B*/.type, Null, [args.expr])} +expr_new~nopar~nobra {-> expr} + = expr_atom~nopar~nobra {-> expr_atom~nopar~nobra.expr} + | {new} kwnew no type~nobra args {-> New expr.new(kwnew, type~nobra.type, Null, [args.expr])} + | {isset_attr} kwisset recv~nopar~nobra attrid {-> New expr.isset_attr(kwisset, recv~nopar~nobra.expr, attrid)} ; -expr_atom/*B3*//*B*/ {-> expr} - = {attr} recv/*B3*//*B*/ attrid {-> New expr.attr(recv/*B3*//*B*/.expr, attrid)} - | {call} recv/*B3*//*B*/ id args {-> New expr.call(recv/*B3*//*B*/.expr, id, [args.expr], [])} +expr_atom~nopar~nobra {-> expr} + = {attr} recv~nopar~nobra attrid {-> New expr.attr(recv~nopar~nobra.expr, attrid)} + | {call} recv~nopar~nobra id args {-> New expr.call(recv~nopar~nobra.expr, id, [args.expr], [])} | {super} qualified? kwsuper args {-> New expr.super(qualified, kwsuper, [args.expr])} - | {init} recv/*B3*//*B*/ kwinit args {-> New expr.init(recv/*B3*//*B*/.expr, kwinit, [args.expr])} -/*N*//*N3*/ | {bra} expr_atom braargs {-> New expr.bra(expr_atom.expr, [braargs.expr], [])} - | {new} kwnew no type/*B3*//*B*/ dot [n2]:no id args {-> New expr.new(kwnew, type/*B3*//*B*/.type, id, [args.expr])} -/*N*//*N3*/ | {range} obra no expr [n2]:no dotdot [n3]:no [expr2]:expr_nobra [n4]:no cbra {-> New expr.crange(expr, expr2.expr)} -/*N*//*N3*/ | {orange} obra no expr [n2]:no dotdot [n3]:no [expr2]:expr_nobra [n4]:no [cbra]:obra {-> New expr.orange(expr, expr2.expr)} -/*N*//*N3*/ | {array} braargs {-> New expr.array([braargs.expr])} + | {init} recv~nopar~nobra kwinit args {-> New expr.init(recv~nopar~nobra.expr, kwinit, [args.expr])} +!nobra | {bra} expr_atom~nopar braargs {-> New expr.bra(expr_atom~nopar.expr, [braargs.expr], [])} + | {new} kwnew no type~nobra dot [n2]:no id args {-> New expr.new(kwnew, type~nobra.type, id, [args.expr])} +// !nopar to unambiguise 'foo[5].bar' between '(foo[5]).bar' and 'foo([5].bar), +!nobra!nopar | {range} obra no expr [n2]:no dotdot [n3]:no [expr2]:expr_nobra [n4]:no cbra {-> New expr.crange(expr, expr2.expr)} +!nobra!nopar | {orange} obra no expr [n2]:no dotdot [n3]:no [expr2]:expr_nobra [n4]:no [cbra]:obra {-> New expr.orange(expr, expr2.expr)} +!nobra!nopar | {array} braargs {-> New expr.array([braargs.expr])} | {self} kwself {-> New expr.self(kwself)} | {true} kwtrue {-> New expr.true(kwtrue)} | {false} kwfalse {-> New expr.false(kwfalse)} @@ -463,8 +504,9 @@ expr_atom/*B3*//*B*/ {-> expr} | {char} char {-> New expr.char(char)} | {string} string {-> New expr.string(string)} | {superstring} superstring {-> superstring.expr} -/*N3*/ | {par} opar expr cpar {-> expr} - | {as_cast} expr_atom/*B3*//*B*/ dot no kwas [n2]:no opar [n3]:no type [n4]:no cpar {-> New expr.as_cast(expr_atom/*B3*//*B*/.expr, kwas, type)} +!nopar | {par} opar expr cpar {-> expr} + | {as_cast} expr_atom~nopar~nobra dot no kwas [n2]:no opar [n3]:no type [n4]:no cpar {-> New expr.as_cast(expr_atom~nopar~nobra.expr, kwas, type)} + | {as_notnull} expr_atom~nopar~nobra dot no kwas [n2]:no opar [n3]:no kwnot [n4]:no kwnull [n5]:no cpar {-> New expr.as_notnull(expr_atom~nopar~nobra.expr, kwas, kwnot, kwnull)} ; superstring {-> expr} @@ -482,8 +524,8 @@ superstring_end {-> expr} /* MISC **********************************************************************/ -recv/*B3*//*B*/ {-> expr} - = expr_atom/*B3*//*B*/ dot no {-> expr_atom/*B3*//*B*/.expr} +recv~nopar~nobra {-> expr} + = expr_atom~nopar~nobra dot no {-> expr_atom~nopar~nobra.expr} | {implicit} {-> New expr.implicit_self()} ; @@ -503,8 +545,12 @@ braargs {-> expr*} args_tail {-> expr} = comma no expr [n2]:no {-> expr}; idlist {-> id*} + = opar idlist_nopar cpar {-> [idlist_nopar.id]} + | {nopar} idlist_nopar {-> [idlist_nopar.id]} + ; +idlist_nopar {-> id*} = {single} id {-> [id]} - | {more} idlist no comma [n2]:no id {-> [idlist.id, id]} + | {more} idlist_nopar no comma [n2]:no id {-> [idlist_nopar.id, id]} ; qualified @@ -531,25 +577,16 @@ n2 | {b} eol+ ; -/* EXPR NO BRACKETS **********************************************************/ -/* since there is no shift/reduce conflict handling in sablecc, the following - * is a duplication of previous productions minus some alternative where '[' - * are not protected. */ - -/*I*/ -/*I2*/ -/*I3*/ - /*****************************************************************************/ Abstract Syntax Tree /*****************************************************************************/ -module = packagedecl? [imports]:import* [classdefs]:classdef*; +module = moduledecl? [imports]:import* [classdefs]:classdef*; -packagedecl - = doc? kwpackage id; +moduledecl + = doc? kwmodule id; -import = visibility kwimport id +import = {std} visibility kwimport id | {no} visibility kwimport kwend ; @@ -560,7 +597,7 @@ visibility | {intrude} kwintrude ; -classdef = doc? kwredef? visibility classkind [id]:classid? [formaldefs]:formaldef* [superclasses]:superclass* [propdefs]:propdef* +classdef= {std} doc? kwredef? visibility classkind [id]:classid? [formaldefs]:formaldef* [superclasses]:superclass* [propdefs]:propdef* | {top} [propdefs]:propdef* | {main} [propdefs]:propdef* ; @@ -568,13 +605,13 @@ classkind = {concrete} kwclass | {abstract} kwabstract kwclass | {interface} kwinterface - | {universal} kwuniversal + | {enum} kwenum ; formaldef = [id]:classid type?; -superclass = kwspecial type; +superclass = kwspecial? kwsuper? type; -propdef = {attr} doc? [readable]:able? [writable]:able? kwredef? visibility kwattr [id]:attrid type? expr? +propdef = {attr} doc? [readable]:able? [writable]:able? kwredef? visibility kwvar [id]:attrid? [id2]:id? type? expr? | {meth} doc? kwredef? visibility methid signature | {deferred_meth} doc? kwredef? visibility kwmeth methid signature | {intern_meth} doc? kwredef? visibility kwmeth methid signature @@ -586,47 +623,52 @@ propdef = {attr} doc? [readable]:able? [writable]:able? kwredef? visibility kwat ; able = {read} kwredef? kwreadable - | {write} kwredef? kwwritable + | {write} kwredef? visibility? kwwritable ; -methid = {id} id | {plus} plus | {minus} minus | {star} star | {slash} slash | {percent} percent | {eq} eq | {ne} ne | {le} le | {ge} ge | {lt} lt | {gt} gt | {bra} obra cbra | {starship} starship | {assign} id assign | {braassign} obra cbra assign; +methid = {id} id | {plus} plus | {minus} minus | {star} star | {slash} slash | {percent} percent | {eq} eq | {ne} ne | {le} le | {ge} ge | {lt} lt | {gt} gt | {ll} ll | {gg} gg | {bra} obra cbra | {starship} starship | {assign} id assign | {braassign} obra cbra assign; signature = [params]:param* type? [closure_decls]:closure_decl*; -param = id type? dotdotdot? +param = id type? dotdotdot? ; -closure_decl = kwwith kwbreak? id signature expr? +closure_decl = kwbreak? bang id signature expr? ; -type = [id]:classid [types]:type*; +type = kwnullable? [id]:classid [types]:type*; + +label = kwlabel id; expr = {block} expr* | {vardecl} kwvar id type? assign? expr? - | {return} kwreturn expr? - | {break} kwbreak expr? + | {return} kwreturn? expr? + | {break} kwbreak label? expr? | {abort} kwabort - | {continue} kwcontinue expr? - | {do} kwdo [block]:expr? + | {continue} kwcontinue? label? expr? + | {do} kwdo [block]:expr? label? | {if} kwif expr [then]:expr? [else]:expr? | {ifexpr} kwif expr kwthen [then]:expr kwelse [else]:expr - | {while} kwwhile expr kwdo [block]:expr? - | {for} [vardecl]:expr kwdo [block]:expr? - | {for_vardecl} kwfor id expr - | {assert} kwassert id? expr + | {while} kwwhile expr kwdo [block]:expr? label? + | {loop} kwloop [block]:expr? label? + | {for} kwfor [ids]:id* expr kwdo [block]:expr? label? + | {assert} kwassert id? expr [else]:expr? | {once} kwonce expr | {send} expr | {binop} expr [expr2]:expr | {or} expr [expr2]:expr | {and} expr [expr2]:expr + | {or_else} expr [expr2]:expr | {not} kwnot expr | {eq} expr [expr2]:expr | {ee} expr [expr2]:expr | {ne} expr [expr2]:expr | {lt} expr [expr2]:expr | {le} expr [expr2]:expr + | {ll} expr [expr2]:expr | {gt} expr [expr2]:expr | {ge} expr [expr2]:expr + | {gg} expr [expr2]:expr | {isa} expr type | {plus} expr [expr2]:expr | {minus} expr [expr2]:expr @@ -647,6 +689,7 @@ expr = {block} expr* | {bra} expr [args]:expr* [closure_defs]:closure_def* | {bra_assign} expr [args]:expr* assign [value]:expr | {bra_reassign} expr [args]:expr* assign_op [value]:expr + | {closure_call} id [args]:expr* [closure_defs]:closure_def* | {var} id | {var_assign} id assign [value]:expr | {var_reassign} id assign_op [value]:expr @@ -669,6 +712,8 @@ expr = {block} expr* | {superstring} [exprs]:expr* | {par} expr | {as_cast} expr kwas type + | {as_notnull} expr kwas kwnot kwnull + | {isset_attr} kwisset expr [id]:attrid ; assign_op = {plus} pluseq @@ -676,7 +721,11 @@ assign_op ; closure_def - = kwwith id* kwdo expr? + = bang [id]:closure_id [ids]:id* kwdo? expr? label? + ; +closure_id + = {simple} id + | {break} kwbreak ; qualified = id* classid? ;