%-----------------------------------------------------------------------------% % vim: ft=mercury ts=4 sw=4 et %-----------------------------------------------------------------------------% % Copyright (C) 1994-2001, 2003-2012 The University of Melbourne. % Copyright (C) 2014-2017 The Mercury team. % This file may only be copied under the terms of the GNU General % Public License - see the file COPYING in the Mercury distribution. %-----------------------------------------------------------------------------% % % File: prog_util. % Main author: fjh. % % Various utility predicates acting on the parse tree data structure. % %-----------------------------------------------------------------------------% :- module parse_tree.prog_util. :- interface. :- import_module mdbcomp.prim_data. :- import_module mdbcomp.sym_name. :- import_module parse_tree.prog_data. :- import_module parse_tree.prog_data_pragma. :- import_module parse_tree.prog_item. :- import_module integer. :- import_module list. :- import_module maybe. :- import_module term. :- import_module varset. %-----------------------------------------------------------------------------% % Given a possible module qualified sym_name and a list of argument types % and a context, construct a term. This is used to construct types. % :- pred construct_qualified_term(sym_name::in, list(term(T))::in, term(T)::out) is det. :- pred construct_qualified_term_with_context(sym_name::in, list(term(T))::in, prog_context::in, term(T)::out) is det. %-----------------------------------------------------------------------------% % adjust_func_arity(PredOrFunc, FuncArity, PredArity). % % We internally store the arity as the length of the argument list % including the return value, which is one more than the arity % of the function reported in error messages. % :- pred adjust_func_arity(pred_or_func, int, int). :- mode adjust_func_arity(in, in, out) is det. :- mode adjust_func_arity(in, out, in) is det. %-----------------------------------------------------------------------------% % make_pred_name_with_context(ModuleName, Prefix, PredOrFunc, % PredName, Line, Counter, SymName): % % Create a predicate name and return it as SymName. Create the name % based on the Prefix, the PredOrFunc, the base name PredName, % and the line number Line. % % For use in cases where we create more than one predicate for the % same line, we also include the per-line distinguishing Counter % in the name. % :- pred make_pred_name_with_context(module_name::in, string::in, pred_or_func::in, string::in, int::in, int::in, sym_name::out) is det. % make_pred_name_with_context(ModuleName, Prefix, MaybePredOrFunc, % PredName, NewPredId, SymName): % % Create a predicate name and return it as SymName. Create the name % based on the Prefix, the (maybe) PredOrFunc, the base name PredName, % and the pred-name-suffix generating scheme described by NewPredId. % :- pred make_pred_name(module_name::in, string::in, maybe(pred_or_func)::in, string::in, new_pred_id::in, sym_name::out) is det. :- type new_pred_id ---> newpred_counter(int, int) % Line number, Counter ; newpred_type_subst(tvarset, type_subst) ; newpred_unused_args(list(int)) ; newpred_parallel_args(list(int)) ; newpred_parallel_loop_control ; newpred_structure_reuse(int, list(int)) % Mode, no-clobber % arguments. ; newpred_distance_granularity(int). % Distance %-----------------------------------------------------------------------------% :- type maybe_modes == maybe(list(mer_mode)). % A pred declaration may contains just types, as in % :- pred list.append(list(T), list(T), list(T)). % or it may contain both types and modes, as in % :- pred list.append(list(T)::in, list(T)::in, list(T)::output). % % This predicate takes the argument list of a pred declaration, splits it % into two separate lists for the types and (if present) the modes. % :- pred split_types_and_modes(list(type_and_mode)::in, list(mer_type)::out, maybe_modes::out) is det. :- pred split_type_and_mode(type_and_mode::in, mer_type::out, maybe(mer_mode)::out) is det. %-----------------------------------------------------------------------------% % Perform a substitution on a goal. % :- pred rename_in_goal(prog_var::in, prog_var::in, goal::in, goal::out) is det. %-----------------------------------------------------------------------------% % Various predicates for accessing the cons_id type. % Given a cons_id and a list of argument terms, convert it into a term. % Works only on the cons_ids that can be expressed in source programs, % so it fails e.g. on pred_consts and type_ctor_info_consts. % :- pred cons_id_and_args_to_term(cons_id::in, list(term(T))::in, term(T)::out) is semidet. % Get the arity of a cons_id, aborting on pred_const and % type_ctor_info_const. % :- func cons_id_arity(cons_id) = arity. % Get the arity of a cons_id. Return a `no' on those cons_ids % where cons_id_arity/2 would normally abort. % :- func cons_id_maybe_arity(cons_id) = maybe(arity). % The reverse conversion - make a cons_id for a functor. % Given a const and an arity for the functor, create a cons_id. % :- pred make_functor_cons_id(const::in, arity::in, cons_id::out) is semidet. :- pred det_make_functor_cons_id(const::in, arity::in, cons_id::out) is det. % source_integer_to_int(Base, Integer, Int): % % Convert an arbitrary precision integer to a native int. For base 10, this % predicate succeeds iff the value of Integer does not exceed int.max_int. % For other bases, this predicate succeeds iff the value of Integer can be % represented by an unsigned integer of the same width as `int', and `Int' % is the signed integer with the same bit pattern as that unsigned value. % The rationale for this behaviour is that non base 10 integers are assumed % to denote bit patterns and that in Mercury source files it is useful to % be able to write values with the high bit set (e.g. 0x80000000 on 32-bit % machines) that would be greater than max_int if interpreted as a positive % integer. % % XXX UINT - we should revisit the the above behaviour once support for % unsigned integers is stable. % :- pred source_integer_to_int(integer_base::in, integer::in, int::out) is semidet. %-----------------------------------------------------------------------------% % Strip the module qualifier from the given cons_id or sym_name. % :- pred strip_module_qualifier_from_cons_id(cons_id::in, cons_id::out) is det. :- pred strip_module_qualifier_from_sym_name(sym_name::in, sym_name::out) is det. % Strip the module qualifier from the given cons_id or sym_name, but % only if the module named by that qualifier is the public builtin module. % :- pred strip_builtin_qualifier_from_cons_id(cons_id::in, cons_id::out) is det. :- pred strip_builtin_qualifier_from_sym_name(sym_name::in, sym_name::out) is det. %-----------------------------------------------------------------------------% % make_n_fresh_vars(Name, N, VarSet0, Vars, VarSet): % `Vars' is a list of `N' fresh variables allocated from % `VarSet0'. The variables will be named "1", "2", % "3", and so on, where is the value of `Name'. % `VarSet' is the resulting varset. % :- pred make_n_fresh_vars(string::in, int::in, list(var(T))::out, varset(T)::in, varset(T)::out) is det. % Given the list of predicate arguments for a predicate that % is really a function, split that list into the function arguments % and the function return type. % :- pred pred_args_to_func_args(list(T)::in, list(T)::out, T::out) is det. % Get the last two arguments from the list, failing if there % aren't at least two arguments. % :- pred get_state_args(list(T)::in, list(T)::out, T::out, T::out) is semidet. % Get the last two arguments from the list, aborting if there % aren't at least two arguments. % :- pred get_state_args_det(list(T)::in, list(T)::out, T::out, T::out) is det. %-----------------------------------------------------------------------------% % Add new type variables for those introduced by a type qualification. % :- pred get_new_tvars(list(tvar)::in, tvarset::in, tvarset::in, tvarset::out, tvar_name_map::in, tvar_name_map::out, tvar_renaming::in, tvar_renaming::out) is det. %-----------------------------------------------------------------------------% % Convert a list of goals into a conjunction. % :- func goal_list_to_conj(prog_context, list(goal)) = goal. %-----------------------------------------------------------------------------% %-----------------------------------------------------------------------------% :- implementation. :- import_module mdbcomp. :- import_module mdbcomp.builtin_modules. :- import_module parse_tree.mercury_to_mercury. :- import_module parse_tree.prog_out. :- import_module bool. :- import_module int. :- import_module map. :- import_module pair. :- import_module require. :- import_module string. %-----------------------------------------------------------------------------% %-----------------------------------------------------------------------------% construct_qualified_term(SymName, ArgTerms, Term) :- term.context_init(Context), construct_qualified_term_with_context(SymName, ArgTerms, Context, Term). construct_qualified_term_with_context(SymName, ArgTerms, Context, Term) :- ( SymName = qualified(ModuleSymName, Name), construct_qualified_term_with_context(ModuleSymName, [], Context, ModuleTerm), UnqualifiedTerm = term.functor(term.atom(Name), ArgTerms, Context), Term = term.functor(term.atom("."), [ModuleTerm, UnqualifiedTerm], Context) ; SymName = unqualified(Name), Term = term.functor(term.atom(Name), ArgTerms, Context) ). %-----------------------------------------------------------------------------% adjust_func_arity(pf_predicate, Arity, Arity). adjust_func_arity(pf_function, Arity - 1, Arity). %-----------------------------------------------------------------------------% %-----------------------------------------------------------------------------% split_types_and_modes(TypesAndModes, Types, MaybeModes) :- split_types_and_modes_2(TypesAndModes, yes, Types, Modes, Result), ( Result = yes, MaybeModes = yes(Modes) ; Result = no, MaybeModes = no ). :- pred split_types_and_modes_2(list(type_and_mode)::in, bool::in, list(mer_type)::out, list(mer_mode)::out, bool::out) is det. % T = type, M = mode, TM = combined type and mode split_types_and_modes_2([], Result, [], [], Result). split_types_and_modes_2([TM | TMs], Result0, [T | Ts], [M | Ms], Result) :- split_type_and_mode(TM, Result0, T, M, Result1), split_types_and_modes_2(TMs, Result1, Ts, Ms, Result). % If a pred declaration specifies modes for some but not all of the % arguments, then the modes are ignored - should this be an error instead? % trd: this should never happen because the parser will detect these cases. % :- pred split_type_and_mode(type_and_mode::in, bool::in, mer_type::out, mer_mode::out, bool::out) is det. split_type_and_mode(type_only(T), _, T, from_to_mode(free, free), no). split_type_and_mode(type_and_mode(T, M), R, T, M, R). split_type_and_mode(type_only(T), T, no). split_type_and_mode(type_and_mode(T, M), T, yes(M)). %-----------------------------------------------------------------------------% rename_in_goal(OldVar, NewVar, Goal0, Goal) :- ( ( Goal0 = true_expr(_Context) ; Goal0 = fail_expr(_Context) ), Goal = Goal0 ; Goal0 = conj_expr(Context, SubGoalA0, SubGoalB0), rename_in_goal(OldVar, NewVar, SubGoalA0, SubGoalA), rename_in_goal(OldVar, NewVar, SubGoalB0, SubGoalB), Goal = conj_expr(Context, SubGoalA, SubGoalB) ; Goal0 = par_conj_expr(Context, SubGoalA0, SubGoalB0), rename_in_goal(OldVar, NewVar, SubGoalA0, SubGoalA), rename_in_goal(OldVar, NewVar, SubGoalB0, SubGoalB), Goal = par_conj_expr(Context, SubGoalA, SubGoalB) ; Goal0 = disj_expr(Context, SubGoalA0, SubGoalB0), rename_in_goal(OldVar, NewVar, SubGoalA0, SubGoalA), rename_in_goal(OldVar, NewVar, SubGoalB0, SubGoalB), Goal = disj_expr(Context, SubGoalA, SubGoalB) ; Goal0 = not_expr(Context, SubGoal0), rename_in_goal(OldVar, NewVar, SubGoal0, SubGoal), Goal = not_expr(Context, SubGoal) ; Goal0 = quant_expr(QuantType, QuantVarsKind, Context, Vars0, SubGoal0), rename_in_vars(OldVar, NewVar, Vars0, Vars), rename_in_goal(OldVar, NewVar, SubGoal0, SubGoal), Goal = quant_expr(QuantType, QuantVarsKind, Context, Vars, SubGoal) ; Goal0 = promise_purity_expr(Context, Purity, SubGoal0), rename_in_goal(OldVar, NewVar, SubGoal0, SubGoal), Goal = promise_purity_expr(Context, Purity, SubGoal) ; Goal0 = promise_equivalent_solutions_expr(Context, Vars0, StateVars0, DotSVars0, ColonSVars0, SubGoal0), rename_in_vars(OldVar, NewVar, Vars0, Vars), rename_in_vars(OldVar, NewVar, StateVars0, StateVars), rename_in_vars(OldVar, NewVar, DotSVars0, DotSVars), rename_in_vars(OldVar, NewVar, ColonSVars0, ColonSVars), rename_in_goal(OldVar, NewVar, SubGoal0, SubGoal), Goal = promise_equivalent_solutions_expr(Context, Vars, StateVars, DotSVars, ColonSVars, SubGoal) ; Goal0 = promise_equivalent_solution_sets_expr(Context, Vars0, StateVars0, DotSVars0, ColonSVars0, SubGoal0), rename_in_vars(OldVar, NewVar, Vars0, Vars), rename_in_vars(OldVar, NewVar, StateVars0, StateVars), rename_in_vars(OldVar, NewVar, DotSVars0, DotSVars), rename_in_vars(OldVar, NewVar, ColonSVars0, ColonSVars), rename_in_goal(OldVar, NewVar, SubGoal0, SubGoal), Goal = promise_equivalent_solution_sets_expr(Context, Vars, StateVars, DotSVars, ColonSVars, SubGoal) ; Goal0 = promise_equivalent_solution_arbitrary_expr(Context, Vars0, StateVars0, DotSVars0, ColonSVars0, SubGoal0), rename_in_vars(OldVar, NewVar, Vars0, Vars), rename_in_vars(OldVar, NewVar, StateVars0, StateVars), rename_in_vars(OldVar, NewVar, DotSVars0, DotSVars), rename_in_vars(OldVar, NewVar, ColonSVars0, ColonSVars), rename_in_goal(OldVar, NewVar, SubGoal0, SubGoal), Goal = promise_equivalent_solution_arbitrary_expr(Context, Vars, StateVars, DotSVars, ColonSVars, SubGoal) ; Goal0 = disable_warnings_expr(Context, HeadWarnings, TailWarnings, SubGoal0), rename_in_goal(OldVar, NewVar, SubGoal0, SubGoal), Goal = disable_warnings_expr(Context, HeadWarnings, TailWarnings, SubGoal) ; Goal0 = require_detism_expr(Context, Detism, SubGoal0), rename_in_goal(OldVar, NewVar, SubGoal0, SubGoal), Goal = require_detism_expr(Context, Detism, SubGoal) ; Goal0 = require_complete_switch_expr(Context, Var0, SubGoal0), rename_in_plain_or_dot_var(OldVar, NewVar, Var0, Var), rename_in_goal(OldVar, NewVar, SubGoal0, SubGoal), Goal = require_complete_switch_expr(Context, Var, SubGoal) ; Goal0 = require_switch_arms_detism_expr(Context, Var0, Detism, SubGoal0), rename_in_plain_or_dot_var(OldVar, NewVar, Var0, Var), rename_in_goal(OldVar, NewVar, SubGoal0, SubGoal), Goal = require_switch_arms_detism_expr(Context, Var, Detism, SubGoal) ; Goal0 = trace_expr(Context, CompileTime, RunTime, MaybeIO0, Mutables0, SubGoal0), ( MaybeIO0 = no, MaybeIO = no ; MaybeIO0 = yes(IOStateVar0), rename_in_var(OldVar, NewVar, IOStateVar0, IOStateVar), MaybeIO = yes(IOStateVar) ), list.map(rename_in_trace_mutable_var(OldVar, NewVar), Mutables0, Mutables), rename_in_goal(OldVar, NewVar, SubGoal0, SubGoal), Goal = trace_expr(Context, CompileTime, RunTime, MaybeIO, Mutables, SubGoal) ; Goal0 = atomic_expr(Context, InVars0, OutVars0, MaybeVars0, MainGoal0, OrElseGoal0), rename_in_atomic_varlist(OldVar, NewVar, InVars0, InVars), rename_in_atomic_varlist(OldVar, NewVar, OutVars0, OutVars), ( MaybeVars0 = no, MaybeVars = no ; MaybeVars0 = yes(TransVars0), list.map(rename_in_var(OldVar, NewVar), TransVars0, TransVars), MaybeVars = yes(TransVars) ), rename_in_goal(OldVar, NewVar, MainGoal0, MainGoal), list.map(rename_in_goal(OldVar, NewVar), OrElseGoal0, OrElseGoal), Goal = atomic_expr(Context, InVars, OutVars, MaybeVars, MainGoal, OrElseGoal) ; Goal0 = try_expr(Context, MaybeIO0, SubGoal0, Then0, MaybeElse0, Catches0, MaybeCatchAny0), rename_in_maybe_var(OldVar, NewVar, MaybeIO0, MaybeIO), rename_in_goal(OldVar, NewVar, SubGoal0, SubGoal), rename_in_goal(OldVar, NewVar, Then0, Then), ( MaybeElse0 = yes(Else0), rename_in_goal(OldVar, NewVar, Else0, Else), MaybeElse = yes(Else) ; MaybeElse0 = no, MaybeElse = no ), list.map(rename_in_catch_expr(OldVar, NewVar), Catches0, Catches), ( MaybeCatchAny0 = yes(catch_any_expr(CatchAnyVar0, CatchAnyGoal0)), rename_in_var(OldVar, NewVar, CatchAnyVar0, CatchAnyVar), rename_in_goal(OldVar, NewVar, CatchAnyGoal0, CatchAnyGoal), MaybeCatchAny = yes(catch_any_expr(CatchAnyVar, CatchAnyGoal)) ; MaybeCatchAny0 = no, MaybeCatchAny = no ), Goal = try_expr(Context, MaybeIO, SubGoal, Then, MaybeElse, Catches, MaybeCatchAny) ; Goal0 = implies_expr(Context, SubGoalA0, SubGoalB0), rename_in_goal(OldVar, NewVar, SubGoalA0, SubGoalA), rename_in_goal(OldVar, NewVar, SubGoalB0, SubGoalB), Goal = implies_expr(Context, SubGoalA, SubGoalB) ; Goal0 = equivalent_expr(Context, SubGoalA0, SubGoalB0), rename_in_goal(OldVar, NewVar, SubGoalA0, SubGoalA), rename_in_goal(OldVar, NewVar, SubGoalB0, SubGoalB), Goal = equivalent_expr(Context, SubGoalA, SubGoalB) ; Goal0 = if_then_else_expr(Context, Vars0, StateVars0, Cond0, Then0, Else0), rename_in_vars(OldVar, NewVar, Vars0, Vars), rename_in_vars(OldVar, NewVar, StateVars0, StateVars), rename_in_goal(OldVar, NewVar, Cond0, Cond), rename_in_goal(OldVar, NewVar, Then0, Then), rename_in_goal(OldVar, NewVar, Else0, Else), Goal = if_then_else_expr(Context, Vars, StateVars, Cond, Then, Else) ; Goal0 = event_expr(Context, Name, Terms0), term.rename_var_in_terms(OldVar, NewVar, Terms0, Terms), Goal = event_expr(Context, Name, Terms) ; Goal0 = call_expr(Context, SymName, Terms0, Purity), term.rename_var_in_terms(OldVar, NewVar, Terms0, Terms), Goal = call_expr(Context, SymName, Terms, Purity) ; Goal0 = unify_expr(Context, TermA0, TermB0, Purity), term.rename_var_in_term(OldVar, NewVar, TermA0, TermA), term.rename_var_in_term(OldVar, NewVar, TermB0, TermB), Goal = unify_expr(Context, TermA, TermB, Purity) ). :- pred rename_in_atomic_varlist(prog_var::in, prog_var::in, atomic_component_state::in, atomic_component_state::out) is det. rename_in_atomic_varlist(OldVar, NewVar, Comp0, Comp) :- ( Comp0 = atomic_state_var(SVar0), rename_in_var(OldVar, NewVar, SVar0, SVar), Comp = atomic_state_var(SVar) ; Comp0 = atomic_var_pair(IVar0, OVar0), rename_in_var(OldVar, NewVar, IVar0, IVar), rename_in_var(OldVar, NewVar, OVar0, OVar), Comp = atomic_var_pair(IVar, OVar) ). :- pred rename_in_trace_mutable_var(prog_var::in, prog_var::in, trace_mutable_var::in, trace_mutable_var::out) is det. rename_in_trace_mutable_var(OldVar, NewVar, TMV0, TMV) :- TMV0 = trace_mutable_var(MutableName, StateVar0), rename_in_var(OldVar, NewVar, StateVar0, StateVar), TMV = trace_mutable_var(MutableName, StateVar). :- pred rename_in_plain_or_dot_var(prog_var::in, prog_var::in, plain_or_dot_var::in, plain_or_dot_var::out) is det. rename_in_plain_or_dot_var(OldVar, NewVar, PODVar0, PODVar) :- ( PODVar0 = podv_plain(Var0), rename_in_var(OldVar, NewVar, Var0, Var), PODVar = podv_plain(Var) ; PODVar0 = podv_dot(DotVar0), rename_in_var(OldVar, NewVar, DotVar0, DotVar), PODVar = podv_dot(DotVar) ). :- pred rename_in_vars(prog_var::in, prog_var::in, list(prog_var)::in, list(prog_var)::out) is det. rename_in_vars(_, _, [], []). rename_in_vars(OldVar, NewVar, [Var0 | Vars0], [Var | Vars]) :- rename_in_var(OldVar, NewVar, Var0, Var), rename_in_vars(OldVar, NewVar, Vars0, Vars). :- pred rename_in_var(prog_var::in, prog_var::in, prog_var::in, prog_var::out) is det. rename_in_var(OldVar, NewVar, Var0, Var) :- ( if Var0 = OldVar then Var = NewVar else Var = Var0 ). :- pred rename_in_maybe_var(prog_var::in, prog_var::in, maybe(prog_var)::in, maybe(prog_var)::out) is det. rename_in_maybe_var(OldVar, NewVar, MaybeVar0, MaybeVar) :- ( MaybeVar0 = yes(Var0), rename_in_var(OldVar, NewVar, Var0, Var), MaybeVar = yes(Var) ; MaybeVar0 = no, MaybeVar = no ). :- pred rename_in_catch_expr(prog_var::in, prog_var::in, catch_expr::in, catch_expr::out) is det. rename_in_catch_expr(OldVar, NewVar, Catch0, Catch) :- Catch0 = catch_expr(Term0, Goal0), term.rename_var_in_term(OldVar, NewVar, Term0, Term), rename_in_goal(OldVar, NewVar, Goal0, Goal), Catch = catch_expr(Term, Goal). %-----------------------------------------------------------------------------% make_pred_name_with_context(ModuleName, Prefix, PredOrFunc, PredName, Line, Counter, SymName) :- make_pred_name(ModuleName, Prefix, yes(PredOrFunc), PredName, newpred_counter(Line, Counter), SymName). make_pred_name(ModuleName, Prefix, MaybePredOrFunc, PredName, NewPredId, SymName) :- ( MaybePredOrFunc = yes(PredOrFunc), PFS = pred_or_func_to_str(PredOrFunc) ; MaybePredOrFunc = no, PFS = "pred_or_func" ), ( NewPredId = newpred_counter(Line, Counter), string.format("%d__%d", [i(Line), i(Counter)], PredIdStr) ; NewPredId = newpred_type_subst(VarSet, TypeSubst), SubstToString = (pred(SubstElem::in, SubstStr::out) is det :- SubstElem = Var - Type, varset.lookup_name(VarSet, Var, VarName), TypeString = mercury_type_to_string(VarSet, print_name_only, Type), string.append_list([VarName, " = ", TypeString], SubstStr) ), list_to_string(SubstToString, TypeSubst, PredIdStr) ; ( NewPredId = newpred_unused_args(Args) ; NewPredId = newpred_parallel_args(Args) ), list_to_string(int_to_string, Args, PredIdStr) ; NewPredId = newpred_structure_reuse(ModeNum, Args), int_to_string(ModeNum, ModeStr), list_to_string(int_to_string, Args, ArgsStr), PredIdStr = ModeStr ++ "__" ++ ArgsStr ; NewPredId = newpred_distance_granularity(Distance), int_to_string(Distance, PredIdStr) ; NewPredId = newpred_parallel_loop_control, PredIdStr = "" ), string.format("%s__%s__%s__%s", [s(Prefix), s(PFS), s(PredName), s(PredIdStr)], Name), SymName = qualified(ModuleName, Name). :- pred list_to_string(pred(T, string)::in(pred(in, out) is det), list(T)::in, string::out) is det. list_to_string(Pred, List, String) :- list_to_string_2(Pred, List, ["]"], Strings), string.append_list(["[" | Strings], String). :- pred list_to_string_2(pred(T, string)::in(pred(in, out) is det), list(T)::in, list(string)::in, list(string)::out) is det. list_to_string_2(_, [], !Strings). list_to_string_2(Pred, [T | Ts], !Strings) :- ( Ts = [] ; Ts = [_ | _], list_to_string_2(Pred, Ts, !Strings), !:Strings = [", " | !.Strings] ), call(Pred, T, String), !:Strings = [String | !.Strings]. %-----------------------------------------------------------------------------% cons_id_and_args_to_term(int_const(Int), [], Term) :- term.context_init(Context), Term = int_to_decimal_term(Int, Context). cons_id_and_args_to_term(uint_const(UInt), [], Term) :- term.context_init(Context), Term = uint_to_decimal_term(UInt, Context). cons_id_and_args_to_term(float_const(Float), [], Term) :- term.context_init(Context), Term = term.functor(term.float(Float), [], Context). cons_id_and_args_to_term(char_const(Char), [], Term) :- SymName = unqualified(string.from_char(Char)), construct_qualified_term(SymName, [], Term). cons_id_and_args_to_term(string_const(String), [], Term) :- term.context_init(Context), Term = term.functor(term.string(String), [], Context). cons_id_and_args_to_term(tuple_cons(_Arity), Args, Term) :- SymName = unqualified("{}"), construct_qualified_term(SymName, Args, Term). cons_id_and_args_to_term(cons(SymName, _Arity, _TypeCtor), Args, Term) :- construct_qualified_term(SymName, Args, Term). cons_id_arity(ConsId) = Arity :- ( ConsId = cons(_, Arity, _) ; ConsId = tuple_cons(Arity) ; ConsId = ground_term_const(_, SubConsId), Arity = cons_id_arity(SubConsId) ; ( ConsId = int_const(_) ; ConsId = uint_const(_) ; ConsId = int8_const(_) ; ConsId = uint8_const(_) ; ConsId = int16_const(_) ; ConsId = uint16_const(_) ; ConsId = int32_const(_) ; ConsId = uint32_const(_) ; ConsId = int64_const(_) ; ConsId = uint64_const(_) ; ConsId = float_const(_) ; ConsId = char_const(_) ; ConsId = string_const(_) ; ConsId = impl_defined_const(_) ), Arity = 0 ; ( ConsId = closure_cons(_, _) ; ConsId = type_ctor_info_const(_, _, _) ; ConsId = base_typeclass_info_const(_, _, _, _) ; ConsId = type_info_cell_constructor(_) ; ConsId = typeclass_info_cell_constructor ; ConsId = type_info_const(_) ; ConsId = typeclass_info_const(_) ; ConsId = tabling_info_const(_) ; ConsId = deep_profiling_proc_layout(_) ; ConsId = table_io_entry_desc(_) ), unexpected($pred, "unexpected cons_id") ). cons_id_maybe_arity(cons(_, Arity, _)) = yes(Arity). cons_id_maybe_arity(tuple_cons(Arity)) = yes(Arity). cons_id_maybe_arity(int_const(_)) = yes(0). cons_id_maybe_arity(uint_const(_)) = yes(0). cons_id_maybe_arity(int8_const(_)) = yes(0). cons_id_maybe_arity(uint8_const(_)) = yes(0). cons_id_maybe_arity(int16_const(_)) = yes(0). cons_id_maybe_arity(uint16_const(_)) = yes(0). cons_id_maybe_arity(int32_const(_)) = yes(0). cons_id_maybe_arity(uint32_const(_)) = yes(0). cons_id_maybe_arity(int64_const(_)) = yes(0). cons_id_maybe_arity(uint64_const(_)) = yes(0). cons_id_maybe_arity(float_const(_)) = yes(0). cons_id_maybe_arity(char_const(_)) = yes(0). cons_id_maybe_arity(string_const(_)) = yes(0). cons_id_maybe_arity(impl_defined_const(_)) = yes(0). cons_id_maybe_arity(closure_cons(_, _)) = no. cons_id_maybe_arity(type_ctor_info_const(_, _, _)) = no. cons_id_maybe_arity(base_typeclass_info_const(_, _, _, _)) = no. cons_id_maybe_arity(type_info_cell_constructor(_)) = no. cons_id_maybe_arity(typeclass_info_cell_constructor) = no. cons_id_maybe_arity(type_info_const(_)) = no. cons_id_maybe_arity(typeclass_info_const(_)) = no. cons_id_maybe_arity(ground_term_const(_, ConsId)) = cons_id_maybe_arity(ConsId). cons_id_maybe_arity(tabling_info_const(_)) = no. cons_id_maybe_arity(deep_profiling_proc_layout(_)) = no. cons_id_maybe_arity(table_io_entry_desc(_)) = no. make_functor_cons_id(Functor, Arity, ConsId) :- % The logic of this predicate is duplicated, with minor differences, % by parse_ordinary_cons_id in superhomogeneous.m. % Any change here may need a corresponding change there. require_complete_switch [Functor] ( Functor = term.atom(Name), ConsId = cons(unqualified(Name), Arity, cons_id_dummy_type_ctor) ; Functor = term.integer(Base, Integer, Signedness, Size), ( Signedness = signed, ( Size = size_word, source_integer_to_int(Base, Integer, Int), ConsId = int_const(Int) ; Size = size_8_bit, integer.to_int8(Integer, Int8), ConsId = int8_const(Int8) ; Size = size_16_bit, integer.to_int16(Integer, Int16), ConsId = int16_const(Int16) ; Size = size_32_bit, integer.to_int32(Integer, Int32), ConsId = int32_const(Int32) ) ; Signedness = unsigned, ( Size = size_word, integer.to_uint(Integer, UInt), ConsId = uint_const(UInt) ; Size = size_8_bit, integer.to_uint8(Integer, UInt8), ConsId = uint8_const(UInt8) ; Size = size_16_bit, integer.to_uint16(Integer, UInt16), ConsId = uint16_const(UInt16) ; Size = size_32_bit, integer.to_uint32(Integer, UInt32), ConsId = uint32_const(UInt32) ) ) ; Functor = term.string(String), ConsId = string_const(String) ; Functor = term.float(Float), ConsId = float_const(Float) ; Functor = term.implementation_defined(Name), ConsId = impl_defined_const(Name) ). det_make_functor_cons_id(Functor, Arity, ConsId) :- ( if make_functor_cons_id(Functor, Arity, ConsIdPrime) then ConsId = ConsIdPrime else unexpected($pred, "make_functor_cons_id failed") ). source_integer_to_int(Base, Integer, Int) :- require_complete_switch [Base] ( Base = base_10, integer.to_int(Integer, Int) ; ( Base = base_2 ; Base = base_8 ; Base = base_16 ), ( if Integer > integer(max_int) then NegInteger = Integer + integer(min_int) + integer(min_int), integer.to_int(NegInteger, Int), Int < 0 else integer.to_int(Integer, Int) ) ). %-----------------------------------------------------------------------------% strip_module_qualifier_from_cons_id(ConsId0, ConsId) :- ( if ConsId0 = cons(Name0, Arity, TypeCtor) then strip_module_qualifier_from_sym_name(Name0, Name), ConsId = cons(Name, Arity, TypeCtor) else ConsId = ConsId0 ). strip_module_qualifier_from_sym_name(SymName0, SymName) :- ( SymName0 = qualified(_Module, Name), SymName = unqualified(Name) ; SymName0 = unqualified(_Name), SymName = SymName0 ). strip_builtin_qualifier_from_cons_id(ConsId0, ConsId) :- ( if ConsId0 = cons(Name0, Arity, TypeCtor) then strip_builtin_qualifier_from_sym_name(Name0, Name), ConsId = cons(Name, Arity, TypeCtor) else ConsId = ConsId0 ). strip_builtin_qualifier_from_sym_name(SymName0, SymName) :- ( if SymName0 = qualified(Module, Name), Module = mercury_public_builtin_module then SymName = unqualified(Name) else SymName = SymName0 ). %-----------------------------------------------------------------------------% make_n_fresh_vars(BaseName, N, Vars, VarSet0, VarSet) :- make_n_fresh_vars_loop(BaseName, 1, N, Vars, VarSet0, VarSet). :- pred make_n_fresh_vars_loop(string::in, int::in, int::in, list(var(T))::out, varset(T)::in, varset(T)::out) is det. make_n_fresh_vars_loop(BaseName, Cur, Max, Vars, !VarSet) :- ( if Cur > Max then Vars = [] else VarName = BaseName ++ string.int_to_string(Cur), varset.new_named_var(VarName, HeadVar, !VarSet), make_n_fresh_vars_loop(BaseName, Cur + 1, Max, TailVars, !VarSet), Vars = [HeadVar | TailVars] ). pred_args_to_func_args(PredArgs, FuncArgs, FuncReturn) :- ( if list.split_last(PredArgs, FuncArgsPrime, FuncReturnPrime) then FuncArgs = FuncArgsPrime, FuncReturn = FuncReturnPrime else unexpected($pred, "function missing return value?") ). get_state_args(Args0, Args, State0, State) :- list.reverse(Args0, RevArgs0), RevArgs0 = [State, State0 | RevArgs], list.reverse(RevArgs, Args). get_state_args_det(Args0, Args, State0, State) :- ( if get_state_args(Args0, ArgsPrime, State0Prime, StatePrime) then Args = ArgsPrime, State0 = State0Prime, State = StatePrime else unexpected($pred, "get_state_args failed") ). %-----------------------------------------------------------------------------% get_new_tvars([], _, !TVarSet, !TVarNameMap, !TVarRenaming). get_new_tvars([TVar | TVars], VarSet, !TVarSet, !TVarNameMap, !TVarRenaming) :- ( if map.contains(!.TVarRenaming, TVar) then true else ( if varset.search_name(VarSet, TVar, TVarName) then ( if map.search(!.TVarNameMap, TVarName, TVarSetVar) then map.det_insert(TVar, TVarSetVar, !TVarRenaming) else varset.new_var(NewTVar, !TVarSet), varset.name_var(NewTVar, TVarName, !TVarSet), map.det_insert(TVarName, NewTVar, !TVarNameMap), map.det_insert(TVar, NewTVar, !TVarRenaming) ) else varset.new_var(NewTVar, !TVarSet), map.det_insert(TVar, NewTVar, !TVarRenaming) ) ), get_new_tvars(TVars, VarSet, !TVarSet, !TVarNameMap, !TVarRenaming). %-----------------------------------------------------------------------------% goal_list_to_conj(Context, []) = true_expr(Context). goal_list_to_conj(Context, [Goal | Goals]) = goal_list_to_conj_2(Context, Goal, Goals). :- func goal_list_to_conj_2(prog_context, goal, list(goal)) = goal. goal_list_to_conj_2(_, Goal, []) = Goal. goal_list_to_conj_2(Context, Goal0, [Goal1 | Goals]) = conj_expr(Context, Goal0, goal_list_to_conj_2(Context, Goal1, Goals)). %-----------------------------------------------------------------------------% :- end_module parse_tree.prog_util. %-----------------------------------------------------------------------------%