| 1 | % (c) 2009-2022 Lehrstuhl fuer Softwaretechnik und Programmiersprachen, | |
| 2 | % Heinrich Heine Universitaet Duesseldorf | |
| 3 | % This software is licenced under EPL 1.0 (http://www.eclipse.org/org/documents/epl-v10.html) | |
| 4 | ||
| 5 | :- module(consistencycheck,[check_z_structure/3, | |
| 6 | check_z_structuret/3, | |
| 7 | check_z_substructure/4, | |
| 8 | check_z_substructuret/4]). | |
| 9 | ||
| 10 | :- use_module(probsrc(tools)). | |
| 11 | :- use_module(probsrc(error_manager)). | |
| 12 | :- use_module(library(lists)). | |
| 13 | :- use_module(library(terms)). | |
| 14 | :- use_module(prozsrc(z_tools)). | |
| 15 | ||
| 16 | :- use_module(probsrc(module_information)). | |
| 17 | :- module_info(group,proz). | |
| 18 | :- module_info(description,'This module provides functionality to check whether the internal data structures of ProZ are consistent.'). | |
| 19 | ||
| 20 | check_z_structure(Z,Comment,Assertions) :- check_z_substructure(Z,list(top),Comment,Assertions). | |
| 21 | check_z_structuret(Z,Comment,Assertions) :- check_z_substructuret(Z,list(top),Comment,Assertions). | |
| 22 | ||
| 23 | check_z_substructure(Z,Pos,Comment,Assertions) :- checkzstr(Z,untyped,Pos,Comment,Assertions). | |
| 24 | check_z_substructuret(Z,Pos,Comment,Assertions) :- checkzstr(Z,typed,Pos,Comment,Assertions). | |
| 25 | ||
| 26 | :- dynamic errorl/2. | |
| 27 | error(Msg,Expr) :- assertz(errorl(Msg,Expr)),fail. | |
| 28 | error(Msg1,Msg2,Expr) :- ajoin([Msg1,Msg2],Msg),error(Msg,Expr). | |
| 29 | ||
| 30 | checkzstr(Z,Mode,Pos,_,Assertions) :- retractall(errorl(_,_)),czstr(Z,Pos,Mode,Assertions),!. | |
| 31 | checkzstr(_,_,_,Comment,_) :- errorl(Msg,Expr), | |
| 32 | atom_concat(Comment,': ',M1),atom_concat(M1,Msg,M), | |
| 33 | add_error(consistencycheck,M,Expr),fail. | |
| 34 | ||
| 35 | %czstr1(Z,_,_,_) :- \+ ground(Z),!,error('specification not ground', Z). | |
| 36 | %czstr1(Z,Pos,Mode,Assertions) :- czstr(Z,Pos,Mode,Assertions). | |
| 37 | ||
| 38 | czstr([],list(_),_,_) :- !. | |
| 39 | czstr([E|Rest],list(Type),Mode,Assertions) :- | |
| 40 | !,czstr(E,Type,Mode,Assertions),czstr(Rest,list(Type),Mode,Assertions). | |
| 41 | ||
| 42 | czstr(Expr,number,_,_) :- !,(number(Expr) -> true; error('number expected:',Expr)). | |
| 43 | czstr(Expr,name,_,_) :- !,(Expr=name(N,D)->true;error('name expected:',Expr)),catom(N),catom(D). | |
| 44 | czstr(Expr,shead,M,Assertions) :- | |
| 45 | !,(Expr=shead(N,P)->true;error('shead expected:',Expr)), | |
| 46 | catom(N),czstr(P,list(name),M,Assertions). | |
| 47 | czstr(Expr,lhs,M,Assertions) :- | |
| 48 | !,(Expr=lhs(N,P)->true;error('lhs expected:',Expr)), | |
| 49 | czstr(N,name,M,Assertions),czstr(P,list(name),M,Assertions). | |
| 50 | czstr(Expr,token,_,_) :- !,catom(Expr). | |
| 51 | czstr(Expr,type,_,Assertions) :- | |
| 52 | !,(checktype(expr,Expr,Assertions)->true;error('invalid type:',Expr)). | |
| 53 | czstr(Expr,Type,untyped,Assertions) :- | |
| 54 | !,czstr2(Expr,Type,untyped,Assertions). | |
| 55 | czstr(ti(Expr,TypeExpr),Type,typed,Assertions) :- | |
| 56 | !, | |
| 57 | (checktype(Type,TypeExpr,Assertions)->true;error('invalid type in mode ',Type,TypeExpr)), | |
| 58 | czstr2(Expr,Type,typed,Assertions). | |
| 59 | czstr(Expr,_,typed,_) :- error('type info expected',Expr). | |
| 60 | ||
| 61 | catom(A) :- (atom(A) -> true; error('atom expected:',A)). | |
| 62 | ||
| 63 | czstr2(Expr,Type,Mode,Assertions) :- | |
| 64 | same_functor(Expr,TInfo), | |
| 65 | (zstrcheck(TInfo,Type,Labels) -> | |
| 66 | true;error('unexpected expression in mode ',Type,Expr)),!, | |
| 67 | check_labels(Assertions,Labels,Expr), | |
| 68 | Expr =.. [_|Args], | |
| 69 | TInfo =.. [_|ArgTypes], | |
| 70 | (same_length(Args,ArgTypes)->true;error('unexpected number of arguments',Expr)), | |
| 71 | czstr_l(Args,ArgTypes,Mode,Assertions). | |
| 72 | czstr_l([],[],_,_). | |
| 73 | czstr_l([E|ERest],[Type|TRest],Mode,Assertions) :- | |
| 74 | czstr(E,Type,Mode,Assertions), | |
| 75 | czstr_l(ERest,TRest,Mode,Assertions). | |
| 76 | ||
| 77 | zstrcheck(ref(name,list(expr)),expr,[]). | |
| 78 | zstrcheck(number(number),expr,[]). | |
| 79 | zstrcheck(apply(expr,expr),expr,[]). | |
| 80 | zstrcheck(inop(name,expr,expr),expr,[]). | |
| 81 | zstrcheck(ingen(name,expr,expr),expr,[]). | |
| 82 | zstrcheck(postop(name,expr),expr,[]). | |
| 83 | zstrcheck(pregen(name,expr),expr,[]). | |
| 84 | zstrcheck(inrel(name,expr,expr),pred,[]). | |
| 85 | zstrcheck(prerel(name,expr),pred,[]). | |
| 86 | zstrcheck(equal(expr,expr),pred,[]). | |
| 87 | zstrcheck(member(expr,expr),pred,[]). | |
| 88 | zstrcheck(power(expr),expr,[]). | |
| 89 | zstrcheck(cross(list(expr)),expr,[]). | |
| 90 | zstrcheck(tuple(list(expr)),expr,[]). | |
| 91 | zstrcheck(if(pred,expr,expr),expr,[]). | |
| 92 | zstrcheck(ext(list(expr)),expr,[]). | |
| 93 | zstrcheck(seq(list(expr)),expr,[]). | |
| 94 | zstrcheck(bag(list(expr)),expr,[]). | |
| 95 | zstrcheck(theta(token,token,list(rename)),expr,[]). | |
| 96 | zstrcheck(sexpr(sexpr),expr,[]). | |
| 97 | zstrcheck(select(expr,name),expr,[]). | |
| 98 | zstrcheck(lambda(body,expr),expr,[]). | |
| 99 | zstrcheck(comp(body,opt),expr,[]). | |
| 100 | zstrcheck(reclet(expr,expr),expr,[]). | |
| 101 | zstrcheck(just(expr),opt,[]). | |
| 102 | zstrcheck(nothing,opt,[]). | |
| 103 | zstrcheck(mu(body,opt),expr,[]). | |
| 104 | zstrcheck(falsity,pred,[]). | |
| 105 | zstrcheck(truth,pred,[]). | |
| 106 | zstrcheck(forall(body,pred),pred,[]). | |
| 107 | zstrcheck(exists(body,pred),pred,[]). | |
| 108 | zstrcheck(exists1(body,pred),pred,[]). | |
| 109 | zstrcheck(and(pred,pred),pred,[]). | |
| 110 | zstrcheck(or(pred,pred),pred,[]). | |
| 111 | zstrcheck(implies(pred,pred),pred,[]). | |
| 112 | zstrcheck(equiv(pred,pred),pred,[]). | |
| 113 | zstrcheck(not(pred),pred,[]). | |
| 114 | zstrcheck(spred(sexpr),pred,[]). | |
| 115 | zstrcheck(letexpr(list(letdef),expr),expr,[]). | |
| 116 | zstrcheck(letpred(list(letdef),pred),pred,[]). | |
| 117 | zstrcheck(letdef(name,expr),letdef,[]). | |
| 118 | zstrcheck(sref(token,token,list(expr),list(rename)),sexpr,[scalc]). | |
| 119 | zstrcheck(sand(sexpr,sexpr),sexpr,[scalc]). | |
| 120 | zstrcheck(sor(sexpr,sexpr),sexpr,[scalc]). | |
| 121 | zstrcheck(simplies(sexpr,sexpr),sexpr,[scalc]). | |
| 122 | zstrcheck(sequiv(sexpr,sexpr),sexpr,[scalc]). | |
| 123 | zstrcheck(snot(sexpr),sexpr,[scalc]). | |
| 124 | zstrcheck(sforall(body,sexpr),sexpr,[scalc]). | |
| 125 | zstrcheck(sexists(body,sexpr),sexpr,[scalc]). | |
| 126 | zstrcheck(sexists1(body,sexpr),sexpr,[scalc]). | |
| 127 | zstrcheck(hide(sexpr,list(name)),sexpr,[scalc]). | |
| 128 | zstrcheck(fatsemi(sexpr,sexpr),sexpr,[scalc]). | |
| 129 | zstrcheck(project(sexpr,sexpr),sexpr,[scalc]). | |
| 130 | zstrcheck(pre(sexpr),sexpr,[scalc]). | |
| 131 | zstrcheck(pipe(sexpr,sexpr),sexpr,[scalc]). | |
| 132 | zstrcheck(text(body),sexpr,[scalc]). | |
| 133 | ||
| 134 | zstrcheck(sdef(shead,body),top,[]). | |
| 135 | zstrcheck(defeq(shead,sexpr),top,[]). | |
| 136 | zstrcheck(eqeq(lhs,expr),top,[]). | |
| 137 | zstrcheck(define(list(name),body),top,[]). | |
| 138 | zstrcheck(axdef(body),top,[]). | |
| 139 | zstrcheck(pred(pred),top,[]). | |
| 140 | zstrcheck(given(list(name)),top,[]). | |
| 141 | zstrcheck(data(name,list(arm)),top,[]). | |
| 142 | zstrcheck(arm(name,opt),arm,[]). | |
| 143 | ||
| 144 | zstrcheck(body(list(decl),list(pred)),body,[]). | |
| 145 | zstrcheck(body(list(decl),list(pred)),sexpr,[]). | |
| 146 | zstrcheck(decl(list(name),expr),decl,[]). | |
| 147 | zstrcheck(sdecl(sexpr),decl,[]). | |
| 148 | ||
| 149 | zstrcheck(rename(name,name),rename,[]). | |
| 150 | ||
| 151 | % internal constructs | |
| 152 | zstrcheck(namedset(name,list(name)),top,[]). | |
| 153 | zstrcheck(binding(list(bfield)),expr,[]). | |
| 154 | zstrcheck(bindfield(name,expr),bfield,[]). | |
| 155 | ||
| 156 | zstrcheck(basetype(type),expr,[]). | |
| 157 | ||
| 158 | zstrcheck(ftconstant(name,name),expr,[]). | |
| 159 | zstrcheck(ftconstructor(name,name,expr),expr,[]). | |
| 160 | zstrcheck(ftdestructor(name,name,expr),expr,[]). | |
| 161 | zstrcheck(ftcase(name,name,expr),pred,[]). | |
| 162 | ||
| 163 | checktype(pred,bool,_). | |
| 164 | checktype(top,none,_). | |
| 165 | checktype(opt,none,_). | |
| 166 | checktype(arm,none,_). | |
| 167 | checktype(letdef,none,_). | |
| 168 | checktype(bfield,none,_). | |
| 169 | checktype(sexpr,set(schema(S)),Assertions) :- checkschematype(S,Assertions). | |
| 170 | checktype(body,set(schema(S)),Assertions) :- checkschematype(S,Assertions). | |
| 171 | checktype(decl,none,_). | |
| 172 | checktype(expr,num,_). | |
| 173 | checktype(expr,given(N),Assertions) :- czstr(N,name,typed,Assertions). | |
| 174 | checktype(expr,freetype(N),Assertions) :- czstr(N,name,typed,Assertions). | |
| 175 | checktype(expr,set(T),Assertions) :- checktype(expr,T,Assertions). | |
| 176 | checktype(expr,tuple(L),Assertions) :- checktype_l(L,Assertions). | |
| 177 | checktype(expr,schema(F),Assertions) :- checkschematype(F,Assertions). | |
| 178 | checktype(expr,param(_),_). | |
| 179 | ||
| 180 | checktype_l([],_). | |
| 181 | checktype_l([E|Rest],Assertions) :- | |
| 182 | checktype(expr,E,Assertions),checktype_l(Rest,Assertions). | |
| 183 | checkschematype([],_). | |
| 184 | checkschematype([field(N,T)|Rest],Assertions) :- | |
| 185 | czstr(N,name,typed,Assertions), | |
| 186 | checktype(expr,T,Assertions), | |
| 187 | checkschematype(Rest,Assertions). | |
| 188 | ||
| 189 | ||
| 190 | check_labels([],_,_). | |
| 191 | check_labels([label(L)|Rest],Labels,Expr) :- | |
| 192 | !,(member(L,Labels) -> | |
| 193 | !,check_labels(Rest,Labels,Expr); | |
| 194 | (atom_concat('label not present: ',L,Msg), | |
| 195 | error(Msg,Expr))). | |
| 196 | check_labels([nlabel(L)|Rest],Labels,Expr) :- | |
| 197 | !,(member(L,Labels) -> | |
| 198 | (!,atom_concat('label present: ',L,Msg), | |
| 199 | error(Msg,Expr)); | |
| 200 | check_labels(Rest,Labels,Expr)). | |
| 201 | check_labels([Assertion|_],_,Expr) :- | |
| 202 | atom_concat('unmatched assertion: ',Assertion,Msg), | |
| 203 | error(Msg,Expr). |