implement Mashparse; #line 2 "mash.y"include "mash.m"; ## mash parser. Thread safe.#Mashparse: module { PATH: con "/dis/lib/mashparse.dis"; init: fn(l: Mashlib); parse: fn(e: ref Mashlib->Env); YYSTYPE: adt { cmd: ref Mashlib->Cmd; item: ref Mashlib->Item; items: list of ref Mashlib->Item; flag: int; }; YYETYPE: type ref Mashlib->Env;Lcase: con 57346;Lfor: con 57347;Lif: con 57348;Lwhile: con 57349;Loffparen: con 57350;Lelse: con 57351;Lpipe: con 57352;Leqeq: con 57353;Lmatch: con 57354;Lnoteq: con 57355;Lcons: con 57356;Lcaret: con 57357;Lnot: con 57358;Lhd: con 57359;Ltl: con 57360;Llen: con 57361;Lword: con 57362;Lbackq: con 57363;Lcolon: con 57364;Lcolonmatch: con 57365;Ldefeq: con 57366;Leq: con 57367;Lmatched: con 57368;Lquote: con 57369;Loncurly: con 57370;Lonparen: con 57371;Loffcurly: con 57372;Lat: con 57373;Lgreat: con 57374;Lgreatgreat: con 57375;Lless: con 57376;Llessgreat: con 57377;Lfn: con 57378;Lin: con 57379;Lrescue: con 57380;Land: con 57381;Leof: con 57382;Lsemi: con 57383;Lerror: con 57384; }; #line 28 "mash.y" lib: Mashlib; Cmd, Item, Stab, Env: import lib;YYEOFCODE: con 1;YYERRCODE: con 2;YYMAXDEPTH: con 150; #line 244 "mash.y" init(l: Mashlib){ lib = l;} parse(e: ref Env){ y := ref YYENV; y.yyenv = e; y.yysys = lib->sys; y.yystderr = e.stderr; yyeparse(y);} yyerror(e: ref YYENV, s: string){ e.yyenv.report(s); e.yyenv.suck();} yyelex(e: ref YYENV): int{ return e.yyenv.lex(e.yylval);}yyexca := array[] of {-1, 1, 1, -1, -2, 0,-1, 2, 1, 1, -2, 0,-1, 21, 24, 51, 25, 51, -2, 48,};YYNPROD: con 75;YYPRIVATE: con 57344;yytoknames: array of string;yystates: array of string;yydebug: con 0;YYLAST: con 249;yyact := array[] of { 7, 20, 4, 49, 41, 47, 110, 65, 103, 95, 17, 24, 32, 112, 33, 146, 142, 38, 39, 28, 59, 60, 140, 129, 40, 64, 22, 46, 63, 35, 36, 34, 37, 128, 127, 38, 67, 69, 70, 71, 27, 26, 25, 76, 22, 75, 126, 111, 77, 74, 45, 80, 81, 38, 44, 78, 88, 89, 90, 91, 92, 68, 22, 98, 99, 93, 94, 32, 124, 33, 97, 106, 62, 107, 38, 39, 104, 108, 109, 104, 68, 40, 105, 22, 66, 105, 56, 143, 55, 116, 117, 118, 119, 120, 73, 32, 32, 33, 33, 38, 39, 122, 132, 36, 131, 37, 40, 123, 22, 72, 125, 56, 43, 55, 135, 136, 58, 57, 133, 62, 134, 139, 38, 6, 62, 16, 13, 14, 15, 141, 66, 22, 96, 67, 69, 62, 32, 79, 33, 84, 83, 21, 24, 61, 147, 148, 144, 24, 149, 11, 22, 3, 12, 16, 13, 14, 15, 18, 2, 19, 1, 5, 85, 87, 86, 84, 83, 8, 101, 21, 54, 51, 52, 53, 48, 39, 9, 11, 22, 82, 12, 40, 42, 50, 137, 18, 56, 19, 55, 54, 51, 52, 53, 48, 39, 115, 138, 38, 39, 130, 40, 10, 50, 29, 40, 56, 22, 55, 102, 56, 31, 55, 85, 87, 86, 84, 83, 121, 23, 30, 85, 87, 86, 84, 83, 114, 0, 145, 85, 87, 86, 84, 83, 113, 0, 0, 85, 87, 86, 84, 83, 100, 0, 0, 85, 87, 86, 84, 83,};yypact := array[] of {-1000,-1000, 121,-1000,-1000,-1000,-1000, 1,-1000,-1000, -3,-1000, 84, 25, 21, -2, 173, 92, 15, 15, 120,-1000, 173,-1000, 149,-1000,-1000,-1000,-1000,-1000,-1000,-1000, 109,-1000, 102, 33, 15, 15,-1000, 81, 66, 19, 149,-1000, 117, 173, 173, 151,-1000,-1000, 173, 173, 173, 173, 173, 56, 52,-1000,-1000, 104, 104, 15, 15, 233,-1000, 54,-1000, 109,-1000, 109, 109, 109,-1000,-1000,-1000,-1000, 1, 17, -24,-1000, 225, 217,-1000, 173, 173, 173, 173, 173, 209,-1000,-1000,-1000,-1000, 177, 177,-1000,-1000,-1000, 57,-1000,-1000,-1000,-1000,-1000, 40,-1000, 16, 4, 3, -7, 70,-1000,-1000, 149, 149, 154,-1000, 125, 125, 125, 125,-1000, -8,-1000,-1000, -14,-1000,-1000,-1000,-1000,-1000, 15, 15, 70, 79, 137, 132,-1000,-1000, 201,-1000, -15,-1000, 149, 149, 149,-1000, 132, 132,-1000,};yypgo := array[] of { 0, 218, 203, 3, 208, 1, 199, 10, 201, 7, 196, 195, 0, 2, 4, 182, 176, 6, 5, 8, 168, 9, 167, 160, 158, 151,};yyr1 := array[] of { 0, 23, 24, 24, 25, 25, 25, 15, 15, 13, 14, 14, 12, 12, 12, 22, 22, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 19, 19, 20, 20, 21, 21, 11, 11, 10, 8, 8, 2, 2, 4, 4, 3, 3, 3, 3, 5, 5, 5, 7, 9, 9, 17, 17, 6, 6, 6, 6, 1, 1, 1, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18,};yyr2 := array[] of { 0, 1, 0, 2, 1, 1, 1, 0, 2, 2, 1, 2, 1, 1, 3, 1, 4, 4, 5, 7, 5, 7, 5, 5, 3, 3, 3, 3, 4, 4, 3, 0, 1, 0, 3, 0, 2, 3, 1, 2, 1, 1, 1, 1, 4, 4, 4, 4, 1, 3, 3, 1, 0, 2, 0, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 3, 3, 2, 2, 2, 2, 3, 3, 3, 3,};yychk := array[] of {-1000, -23, -24, -25, -13, 40, 2, -12, -22, -16, -8, 28, 31, 5, 6, 7, 4, -7, 36, 38, -5, 20, 29, -1, 10, 41, 40, 39, 22, -2, -4, -6, -5, -3, 34, 32, 33, 35, 20, 21, 27, -14, -15, 28, 29, 29, 29, -18, 20, -3, 29, 17, 18, 19, 16, 34, 32, 25, 24, -5, -5, 23, 15, -18, -12, -9, 28, -5, 28, -5, -5, -5, 28, 28, 30, -13, -12, -14, -7, 20, -18, -18, 28, 15, 14, 11, 13, 12, -18, -18, -18, -18, -18, -9, -9, -21, 28, -21, -5, -5, 8, -20, -4, -19, 22, 28, -14, -14, -14, -14, -17, 30, 37, 8, 8, -11, -18, -18, -18, -18, -18, 8, -14, -19, 28, -14, 30, 30, 30, 30, -6, 34, 32, -17, -9, -12, -12, 30, -10, -18, 30, -14, 30, 8, 9, 26, 30, -12, -12, -13,};yydef := array[] of { 2, -2, -2, 3, 4, 5, 6, 0, 12, 13, 15, 7, 0, 0, 0, 0, 0, 0, 0, 0, 38, -2, 0, 9, 0, 60, 61, 62, 52, 39, 40, 41, 42, 43, 0, 0, 0, 0, 48, 0, 0, 0, 10, 7, 0, 0, 0, 0, 63, 64, 0, 0, 0, 0, 0, 0, 0, 52, 52, 33, 33, 0, 0, 0, 14, 31, 7, 56, 7, 57, 58, 59, 7, 7, 54, 8, 11, 0, 0, 51, 0, 0, 35, 0, 0, 0, 0, 0, 0, 67, 68, 69, 70, 24, 25, 26, 7, 27, 0, 49, 50, 16, 53, 32, 0, 7, 0, 0, 0, 0, 17, 54, 52, 0, 0, 0, 66, 71, 72, 73, 74, 65, 0, 28, 7, 0, 46, 47, 44, 45, 55, 0, 0, 18, 0, 20, 22, 23, 36, 0, 34, 0, 30, 0, 0, 0, 29, 19, 21, 37,};yytok1 := array[] of { 1,};yytok2 := array[] of { 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42,};yytok3 := array[] of { 0}; YYFLAG: con -1000; # parser for yacc outputYYENV: adt{ yylval: ref YYSTYPE; # lexical value yyval: YYSTYPE; # goto value yyenv: YYETYPE; # useer environment yynerrs: int; # number of errors yyerrflag: int; # error recovery flag yysys: Sys; yystderr: ref Sys->FD;}; yytokname(yyc: int): string{ if(yyc > 0 && yyc <= len yytoknames && yytoknames[yyc-1] != nil) return yytoknames[yyc-1]; return "<"+string yyc+">";} yystatname(yys: int): string{ if(yys >= 0 && yys < len yystates && yystates[yys] != nil) return yystates[yys]; return "<"+string yys+">\n";} yylex1(e: ref YYENV): int{ c, yychar : int; yychar = yyelex(e); if(yychar <= 0) c = yytok1[0]; else if(yychar < len yytok1) c = yytok1[yychar]; else if(yychar >= YYPRIVATE && yychar < YYPRIVATE+len yytok2) c = yytok2[yychar-YYPRIVATE]; else{ n := len yytok3; c = 0; for(i := 0; i < n; i+=2) { if(yytok3[i+0] == yychar) { c = yytok3[i+1]; break; } } if(c == 0) c = yytok2[1]; # unknown char } if(yydebug >= 3) e.yysys->fprint(e.yystderr, "lex %.4ux %s\n", yychar, yytokname(c)); return c;} YYS: adt{ yyv: YYSTYPE; yys: int;}; yyparse(): int{ return yyeparse(nil);} yyeparse(e: ref YYENV): int{ if(e == nil) e = ref YYENV; if(e.yylval == nil) e.yylval = ref YYSTYPE; if(e.yysys == nil) { e.yysys = load Sys "$Sys"; e.yystderr = e.yysys->fildes(2); } yys := array[YYMAXDEPTH] of YYS; yystate := 0; yychar := -1; e.yynerrs = 0; e.yyerrflag = 0; yyp := -1; yyn := 0; yystack: for(;;){ # put a state and value onto the stack if(yydebug >= 4) e.yysys->fprint(e.yystderr, "char %s in %s", yytokname(yychar), yystatname(yystate)); yyp++; if(yyp >= YYMAXDEPTH) { yyerror(e, "yacc stack overflow"); yyn = 1; break yystack; } yys[yyp].yys = yystate; yys[yyp].yyv = e.yyval; for(;;){ yyn = yypact[yystate]; if(yyn > YYFLAG) { # simple state if(yychar < 0) yychar = yylex1(e); yyn += yychar; if(yyn >= 0 && yyn < YYLAST) { yyn = yyact[yyn]; if(yychk[yyn] == yychar) { # valid shift yychar = -1; yyp++; if(yyp >= YYMAXDEPTH) { yyerror(e, "yacc stack overflow"); yyn = 1; break yystack; } yystate = yyn; yys[yyp].yys = yystate; yys[yyp].yyv = *e.yylval; if(e.yyerrflag > 0) e.yyerrflag--; if(yydebug >= 4) e.yysys->fprint(e.yystderr, "char %s in %s", yytokname(yychar), yystatname(yystate)); continue; } } } # default state action yyn = yydef[yystate]; if(yyn == -2) { if(yychar < 0) yychar = yylex1(e); # look through exception table for(yyxi:=0;; yyxi+=2) if(yyexca[yyxi] == -1 && yyexca[yyxi+1] == yystate) break; for(yyxi += 2;; yyxi += 2) { yyn = yyexca[yyxi]; if(yyn < 0 || yyn == yychar) break; } yyn = yyexca[yyxi+1]; if(yyn < 0){ yyn = 0; break yystack; } } if(yyn != 0) break; # error ... attempt to resume parsing if(e.yyerrflag == 0) { # brand new error yyerror(e, "syntax error"); e.yynerrs++; if(yydebug >= 1) { e.yysys->fprint(e.yystderr, "%s", yystatname(yystate)); e.yysys->fprint(e.yystderr, "saw %s\n", yytokname(yychar)); } } if(e.yyerrflag != 3) { # incompletely recovered error ... try again e.yyerrflag = 3; # find a state where "error" is a legal shift action while(yyp >= 0) { yyn = yypact[yys[yyp].yys] + YYERRCODE; if(yyn >= 0 && yyn < YYLAST) { yystate = yyact[yyn]; # simulate a shift of "error" if(yychk[yystate] == YYERRCODE) { yychar = -1; continue yystack; } } # the current yyp has no shift on "error", pop stack if(yydebug >= 2) e.yysys->fprint(e.yystderr, "error recovery pops state %d, uncovers %d\n", yys[yyp].yys, yys[yyp-1].yys ); yyp--; } # there is no state on the stack with an error shift ... abort yyn = 1; break yystack; } # no shift yet; clobber input char if(yydebug >= 2) e.yysys->fprint(e.yystderr, "error recovery discards %s\n", yytokname(yychar)); if(yychar == YYEOFCODE) { yyn = 1; break yystack; } yychar = -1; # try again in the same state } # reduction by production yyn if(yydebug >= 2) e.yysys->fprint(e.yystderr, "reduce %d in:\n\t%s", yyn, yystatname(yystate)); yypt := yyp; yyp -= yyr2[yyn];# yyval = yys[yyp+1].yyv; yym := yyn; # consult goto table to find next state yyn = yyr1[yyn]; yyg := yypgo[yyn]; yyj := yyg + yys[yyp].yys + 1; if(yyj >= YYLAST || yychk[yystate=yyact[yyj]] != -yyn) yystate = yyact[yyg]; case yym { 4=>#line 63 "mash.y"{ yys[yypt-0].yyv.cmd.xeq(e.yyenv); }7=>#line 69 "mash.y"{ e.yyval.cmd = nil; }8=>#line 71 "mash.y"{ e.yyval.cmd = Cmd.cmd2(Cseq, yys[yypt-1].yyv.cmd, yys[yypt-0].yyv.cmd); }9=>#line 75 "mash.y"{ e.yyval.cmd = yys[yypt-1].yyv.cmd.mkcmd(e.yyenv, yys[yypt-0].yyv.flag); }10=>e.yyval.cmd = yys[yyp+1].yyv.cmd;11=>#line 80 "mash.y"{ e.yyval.cmd = Cmd.cmd2(Cseq, yys[yypt-1].yyv.cmd, yys[yypt-0].yyv.cmd.mkcmd(e.yyenv, 0)); }12=>e.yyval.cmd = yys[yyp+1].yyv.cmd;13=>e.yyval.cmd = yys[yyp+1].yyv.cmd;14=>#line 86 "mash.y"{ e.yyval.cmd = Cmd.cmd2(Cpipe, yys[yypt-2].yyv.cmd, yys[yypt-0].yyv.cmd); }15=>#line 90 "mash.y"{ e.yyval.cmd = e.yyenv.mksimple(yys[yypt-0].yyv.items); }16=>#line 92 "mash.y"{ yys[yypt-0].yyv.cmd.words = e.yyenv.mklist(yys[yypt-1].yyv.items); e.yyval.cmd = Cmd.cmd1w(Cdepend, yys[yypt-0].yyv.cmd, e.yyenv.mklist(yys[yypt-3].yyv.items)); }17=>#line 99 "mash.y"{ e.yyval.cmd = yys[yypt-0].yyv.cmd.cmde(Cgroup, yys[yypt-2].yyv.cmd, nil); }18=>#line 101 "mash.y"{ e.yyval.cmd = yys[yypt-0].yyv.cmd.cmde(Csubgroup, yys[yypt-2].yyv.cmd, nil); }19=>#line 103 "mash.y"{ e.yyval.cmd = Cmd.cmd1i(Cfor, yys[yypt-0].yyv.cmd, yys[yypt-4].yyv.item); e.yyval.cmd.words = lib->revitems(yys[yypt-2].yyv.items); }20=>#line 105 "mash.y"{ e.yyval.cmd = Cmd.cmd2(Cif, yys[yypt-2].yyv.cmd, yys[yypt-0].yyv.cmd); }21=>#line 107 "mash.y"Lines 1–500 of 662. Load more
implement Mashparse; #line 2 "mash.y" include "mash.m"; # # mash parser. Thread safe. # Mashparse: module { PATH: con "/dis/lib/mashparse.dis"; init: fn(l: Mashlib); parse: fn(e: ref Mashlib->Env); YYSTYPE: adt { cmd: ref Mashlib->Cmd; item: ref Mashlib->Item; items: list of ref Mashlib->Item; flag: int; }; YYETYPE: type ref Mashlib->Env; Lcase: con 57346; Lfor: con 57347; Lif: con 57348; Lwhile: con 57349; Loffparen: con 57350; Lelse: con 57351; Lpipe: con 57352; Leqeq: con 57353; Lmatch: con 57354; Lnoteq: con 57355; Lcons: con 57356; Lcaret: con 57357; Lnot: con 57358; Lhd: con 57359; Ltl: con 57360; Llen: con 57361; Lword: con 57362; Lbackq: con 57363; Lcolon: con 57364; Lcolonmatch: con 57365; Ldefeq: con 57366; Leq: con 57367; Lmatched: con 57368; Lquote: con 57369; Loncurly: con 57370; Lonparen: con 57371; Loffcurly: con 57372; Lat: con 57373; Lgreat: con 57374; Lgreatgreat: con 57375; Lless: con 57376; Llessgreat: con 57377; Lfn: con 57378; Lin: con 57379; Lrescue: con 57380; Land: con 57381; Leof: con 57382; Lsemi: con 57383; Lerror: con 57384; }; #line 28 "mash.y" lib: Mashlib; Cmd, Item, Stab, Env: import lib; YYEOFCODE: con 1; YYERRCODE: con 2; YYMAXDEPTH: con 150; #line 244 "mash.y" init(l: Mashlib) { lib = l; } parse(e: ref Env) { y := ref YYENV; y.yyenv = e; y.yysys = lib->sys; y.yystderr = e.stderr; yyeparse(y); } yyerror(e: ref YYENV, s: string) { e.yyenv.report(s); e.yyenv.suck(); } yyelex(e: ref YYENV): int { return e.yyenv.lex(e.yylval); } yyexca := array[] of {-1, 1, 1, -1, -2, 0, -1, 2, 1, 1, -2, 0, -1, 21, 24, 51, 25, 51, -2, 48, }; YYNPROD: con 75; YYPRIVATE: con 57344; yytoknames: array of string; yystates: array of string; yydebug: con 0; YYLAST: con 249; yyact := array[] of { 7, 20, 4, 49, 41, 47, 110, 65, 103, 95, 17, 24, 32, 112, 33, 146, 142, 38, 39, 28, 59, 60, 140, 129, 40, 64, 22, 46, 63, 35, 36, 34, 37, 128, 127, 38, 67, 69, 70, 71, 27, 26, 25, 76, 22, 75, 126, 111, 77, 74, 45, 80, 81, 38, 44, 78, 88, 89, 90, 91, 92, 68, 22, 98, 99, 93, 94, 32, 124, 33, 97, 106, 62, 107, 38, 39, 104, 108, 109, 104, 68, 40, 105, 22, 66, 105, 56, 143, 55, 116, 117, 118, 119, 120, 73, 32, 32, 33, 33, 38, 39, 122, 132, 36, 131, 37, 40, 123, 22, 72, 125, 56, 43, 55, 135, 136, 58, 57, 133, 62, 134, 139, 38, 6, 62, 16, 13, 14, 15, 141, 66, 22, 96, 67, 69, 62, 32, 79, 33, 84, 83, 21, 24, 61, 147, 148, 144, 24, 149, 11, 22, 3, 12, 16, 13, 14, 15, 18, 2, 19, 1, 5, 85, 87, 86, 84, 83, 8, 101, 21, 54, 51, 52, 53, 48, 39, 9, 11, 22, 82, 12, 40, 42, 50, 137, 18, 56, 19, 55, 54, 51, 52, 53, 48, 39, 115, 138, 38, 39, 130, 40, 10, 50, 29, 40, 56, 22, 55, 102, 56, 31, 55, 85, 87, 86, 84, 83, 121, 23, 30, 85, 87, 86, 84, 83, 114, 0, 145, 85, 87, 86, 84, 83, 113, 0, 0, 85, 87, 86, 84, 83, 100, 0, 0, 85, 87, 86, 84, 83, }; yypact := array[] of { -1000,-1000, 121,-1000,-1000,-1000,-1000, 1,-1000,-1000, -3,-1000, 84, 25, 21, -2, 173, 92, 15, 15, 120,-1000, 173,-1000, 149,-1000,-1000,-1000,-1000,-1000, -1000,-1000, 109,-1000, 102, 33, 15, 15,-1000, 81, 66, 19, 149,-1000, 117, 173, 173, 151,-1000,-1000, 173, 173, 173, 173, 173, 56, 52,-1000,-1000, 104, 104, 15, 15, 233,-1000, 54,-1000, 109,-1000, 109, 109, 109,-1000,-1000,-1000,-1000, 1, 17, -24,-1000, 225, 217,-1000, 173, 173, 173, 173, 173, 209,-1000, -1000,-1000,-1000, 177, 177,-1000,-1000,-1000, 57,-1000, -1000,-1000,-1000,-1000, 40,-1000, 16, 4, 3, -7, 70,-1000,-1000, 149, 149, 154,-1000, 125, 125, 125, 125,-1000, -8,-1000,-1000, -14,-1000,-1000,-1000,-1000, -1000, 15, 15, 70, 79, 137, 132,-1000,-1000, 201, -1000, -15,-1000, 149, 149, 149,-1000, 132, 132,-1000, }; yypgo := array[] of { 0, 218, 203, 3, 208, 1, 199, 10, 201, 7, 196, 195, 0, 2, 4, 182, 176, 6, 5, 8, 168, 9, 167, 160, 158, 151, }; yyr1 := array[] of { 0, 23, 24, 24, 25, 25, 25, 15, 15, 13, 14, 14, 12, 12, 12, 22, 22, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 19, 19, 20, 20, 21, 21, 11, 11, 10, 8, 8, 2, 2, 4, 4, 3, 3, 3, 3, 5, 5, 5, 7, 9, 9, 17, 17, 6, 6, 6, 6, 1, 1, 1, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, }; yyr2 := array[] of { 0, 1, 0, 2, 1, 1, 1, 0, 2, 2, 1, 2, 1, 1, 3, 1, 4, 4, 5, 7, 5, 7, 5, 5, 3, 3, 3, 3, 4, 4, 3, 0, 1, 0, 3, 0, 2, 3, 1, 2, 1, 1, 1, 1, 4, 4, 4, 4, 1, 3, 3, 1, 0, 2, 0, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 3, 3, 2, 2, 2, 2, 3, 3, 3, 3, }; yychk := array[] of { -1000, -23, -24, -25, -13, 40, 2, -12, -22, -16, -8, 28, 31, 5, 6, 7, 4, -7, 36, 38, -5, 20, 29, -1, 10, 41, 40, 39, 22, -2, -4, -6, -5, -3, 34, 32, 33, 35, 20, 21, 27, -14, -15, 28, 29, 29, 29, -18, 20, -3, 29, 17, 18, 19, 16, 34, 32, 25, 24, -5, -5, 23, 15, -18, -12, -9, 28, -5, 28, -5, -5, -5, 28, 28, 30, -13, -12, -14, -7, 20, -18, -18, 28, 15, 14, 11, 13, 12, -18, -18, -18, -18, -18, -9, -9, -21, 28, -21, -5, -5, 8, -20, -4, -19, 22, 28, -14, -14, -14, -14, -17, 30, 37, 8, 8, -11, -18, -18, -18, -18, -18, 8, -14, -19, 28, -14, 30, 30, 30, 30, -6, 34, 32, -17, -9, -12, -12, 30, -10, -18, 30, -14, 30, 8, 9, 26, 30, -12, -12, -13, }; yydef := array[] of { 2, -2, -2, 3, 4, 5, 6, 0, 12, 13, 15, 7, 0, 0, 0, 0, 0, 0, 0, 0, 38, -2, 0, 9, 0, 60, 61, 62, 52, 39, 40, 41, 42, 43, 0, 0, 0, 0, 48, 0, 0, 0, 10, 7, 0, 0, 0, 0, 63, 64, 0, 0, 0, 0, 0, 0, 0, 52, 52, 33, 33, 0, 0, 0, 14, 31, 7, 56, 7, 57, 58, 59, 7, 7, 54, 8, 11, 0, 0, 51, 0, 0, 35, 0, 0, 0, 0, 0, 0, 67, 68, 69, 70, 24, 25, 26, 7, 27, 0, 49, 50, 16, 53, 32, 0, 7, 0, 0, 0, 0, 17, 54, 52, 0, 0, 0, 66, 71, 72, 73, 74, 65, 0, 28, 7, 0, 46, 47, 44, 45, 55, 0, 0, 18, 0, 20, 22, 23, 36, 0, 34, 0, 30, 0, 0, 0, 29, 19, 21, 37, }; yytok1 := array[] of { 1, }; yytok2 := array[] of { 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, }; yytok3 := array[] of { 0 }; YYFLAG: con -1000; # parser for yacc output YYENV: adt { yylval: ref YYSTYPE; # lexical value yyval: YYSTYPE; # goto value yyenv: YYETYPE; # useer environment yynerrs: int; # number of errors yyerrflag: int; # error recovery flag yysys: Sys; yystderr: ref Sys->FD; }; yytokname(yyc: int): string { if(yyc > 0 && yyc <= len yytoknames && yytoknames[yyc-1] != nil) return yytoknames[yyc-1]; return "<"+string yyc+">"; } yystatname(yys: int): string { if(yys >= 0 && yys < len yystates && yystates[yys] != nil) return yystates[yys]; return "<"+string yys+">\n"; } yylex1(e: ref YYENV): int { c, yychar : int; yychar = yyelex(e); if(yychar <= 0) c = yytok1[0]; else if(yychar < len yytok1) c = yytok1[yychar]; else if(yychar >= YYPRIVATE && yychar < YYPRIVATE+len yytok2) c = yytok2[yychar-YYPRIVATE]; else{ n := len yytok3; c = 0; for(i := 0; i < n; i+=2) { if(yytok3[i+0] == yychar) { c = yytok3[i+1]; break; } } if(c == 0) c = yytok2[1]; # unknown char } if(yydebug >= 3) e.yysys->fprint(e.yystderr, "lex %.4ux %s\n", yychar, yytokname(c)); return c; } YYS: adt { yyv: YYSTYPE; yys: int; }; yyparse(): int { return yyeparse(nil); } yyeparse(e: ref YYENV): int { if(e == nil) e = ref YYENV; if(e.yylval == nil) e.yylval = ref YYSTYPE; if(e.yysys == nil) { e.yysys = load Sys "$Sys"; e.yystderr = e.yysys->fildes(2); } yys := array[YYMAXDEPTH] of YYS; yystate := 0; yychar := -1; e.yynerrs = 0; e.yyerrflag = 0; yyp := -1; yyn := 0; yystack: for(;;){ # put a state and value onto the stack if(yydebug >= 4) e.yysys->fprint(e.yystderr, "char %s in %s", yytokname(yychar), yystatname(yystate)); yyp++; if(yyp >= YYMAXDEPTH) { yyerror(e, "yacc stack overflow"); yyn = 1; break yystack; } yys[yyp].yys = yystate; yys[yyp].yyv = e.yyval; for(;;){ yyn = yypact[yystate]; if(yyn > YYFLAG) { # simple state if(yychar < 0) yychar = yylex1(e); yyn += yychar; if(yyn >= 0 && yyn < YYLAST) { yyn = yyact[yyn]; if(yychk[yyn] == yychar) { # valid shift yychar = -1; yyp++; if(yyp >= YYMAXDEPTH) { yyerror(e, "yacc stack overflow"); yyn = 1; break yystack; } yystate = yyn; yys[yyp].yys = yystate; yys[yyp].yyv = *e.yylval; if(e.yyerrflag > 0) e.yyerrflag--; if(yydebug >= 4) e.yysys->fprint(e.yystderr, "char %s in %s", yytokname(yychar), yystatname(yystate)); continue; } } } # default state action yyn = yydef[yystate]; if(yyn == -2) { if(yychar < 0) yychar = yylex1(e); # look through exception table for(yyxi:=0;; yyxi+=2) if(yyexca[yyxi] == -1 && yyexca[yyxi+1] == yystate) break; for(yyxi += 2;; yyxi += 2) { yyn = yyexca[yyxi]; if(yyn < 0 || yyn == yychar) break; } yyn = yyexca[yyxi+1]; if(yyn < 0){ yyn = 0; break yystack; } } if(yyn != 0) break; # error ... attempt to resume parsing if(e.yyerrflag == 0) { # brand new error yyerror(e, "syntax error"); e.yynerrs++; if(yydebug >= 1) { e.yysys->fprint(e.yystderr, "%s", yystatname(yystate)); e.yysys->fprint(e.yystderr, "saw %s\n", yytokname(yychar)); } } if(e.yyerrflag != 3) { # incompletely recovered error ... try again e.yyerrflag = 3; # find a state where "error" is a legal shift action while(yyp >= 0) { yyn = yypact[yys[yyp].yys] + YYERRCODE; if(yyn >= 0 && yyn < YYLAST) { yystate = yyact[yyn]; # simulate a shift of "error" if(yychk[yystate] == YYERRCODE) { yychar = -1; continue yystack; } } # the current yyp has no shift on "error", pop stack if(yydebug >= 2) e.yysys->fprint(e.yystderr, "error recovery pops state %d, uncovers %d\n", yys[yyp].yys, yys[yyp-1].yys ); yyp--; } # there is no state on the stack with an error shift ... abort yyn = 1; break yystack; } # no shift yet; clobber input char if(yydebug >= 2) e.yysys->fprint(e.yystderr, "error recovery discards %s\n", yytokname(yychar)); if(yychar == YYEOFCODE) { yyn = 1; break yystack; } yychar = -1; # try again in the same state } # reduction by production yyn if(yydebug >= 2) e.yysys->fprint(e.yystderr, "reduce %d in:\n\t%s", yyn, yystatname(yystate)); yypt := yyp; yyp -= yyr2[yyn]; # yyval = yys[yyp+1].yyv; yym := yyn; # consult goto table to find next state yyn = yyr1[yyn]; yyg := yypgo[yyn]; yyj := yyg + yys[yyp].yys + 1; if(yyj >= YYLAST || yychk[yystate=yyact[yyj]] != -yyn) yystate = yyact[yyg]; case yym { 4=> #line 63 "mash.y" { yys[yypt-0].yyv.cmd.xeq(e.yyenv); } 7=> #line 69 "mash.y" { e.yyval.cmd = nil; } 8=> #line 71 "mash.y" { e.yyval.cmd = Cmd.cmd2(Cseq, yys[yypt-1].yyv.cmd, yys[yypt-0].yyv.cmd); } 9=> #line 75 "mash.y" { e.yyval.cmd = yys[yypt-1].yyv.cmd.mkcmd(e.yyenv, yys[yypt-0].yyv.flag); } 10=> e.yyval.cmd = yys[yyp+1].yyv.cmd; 11=> #line 80 "mash.y" { e.yyval.cmd = Cmd.cmd2(Cseq, yys[yypt-1].yyv.cmd, yys[yypt-0].yyv.cmd.mkcmd(e.yyenv, 0)); } 12=> e.yyval.cmd = yys[yyp+1].yyv.cmd; 13=> e.yyval.cmd = yys[yyp+1].yyv.cmd; 14=> #line 86 "mash.y" { e.yyval.cmd = Cmd.cmd2(Cpipe, yys[yypt-2].yyv.cmd, yys[yypt-0].yyv.cmd); } 15=> #line 90 "mash.y" { e.yyval.cmd = e.yyenv.mksimple(yys[yypt-0].yyv.items); } 16=> #line 92 "mash.y" { yys[yypt-0].yyv.cmd.words = e.yyenv.mklist(yys[yypt-1].yyv.items); e.yyval.cmd = Cmd.cmd1w(Cdepend, yys[yypt-0].yyv.cmd, e.yyenv.mklist(yys[yypt-3].yyv.items)); } 17=> #line 99 "mash.y" { e.yyval.cmd = yys[yypt-0].yyv.cmd.cmde(Cgroup, yys[yypt-2].yyv.cmd, nil); } 18=> #line 101 "mash.y" { e.yyval.cmd = yys[yypt-0].yyv.cmd.cmde(Csubgroup, yys[yypt-2].yyv.cmd, nil); } 19=> #line 103 "mash.y" { e.yyval.cmd = Cmd.cmd1i(Cfor, yys[yypt-0].yyv.cmd, yys[yypt-4].yyv.item); e.yyval.cmd.words = lib->revitems(yys[yypt-2].yyv.items); } 20=> #line 105 "mash.y" { e.yyval.cmd = Cmd.cmd2(Cif, yys[yypt-2].yyv.cmd, yys[yypt-0].yyv.cmd); } 21=> #line 107 "mash.y"