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/*
Version 1.0 21/09/1994
Author: Sjaak Smetsers
*/
#include "compiledefines.h"
#include "types.t"
#include "system.h"
#include "settings.h"
#include "syntaxtr.t"
#include "comsupport.h"
#include "scanner.h"
#include "comparser.h"
#include "sizes.h"
#include "checker.h"
#include "transform.h"
#include "sa.h"
#include "statesgen.h"
#include "tctypes.t"
#include "typechecker.h"
#include "typechecker2.h"
#include "tcsupport.h"
#include "typeconv.h"
#include "refcountanal.h"
#include "overloading.h"
#include "buildtree.h"
static char *TC2 = "typechecker2";
static TypeCell gSubType = NULL;
static unsigned NextTypeVariable;
static PolyList OverloadedTypeVariables;
static void PrintAttributeEquationsOfTypes (TypeCell type);
static Bool DPST = True, DPT = True;
static void PrintTypeCell (TypeCell type, Bool brackets, Bool with_uni_attrs);
static void PrintTypeCells (int arity, TypeCell typecells[], char separator, Bool brackets, Bool with_uni_attrs)
{
if (arity > 0)
{ int i;
PrintTypeCell (typecells [0], brackets, with_uni_attrs);
for (i=1; i<arity; i++)
{ FPutC (separator, StdError);
PrintTypeCell (typecells [i], brackets, with_uni_attrs);
}
}
} /* PrintTypeCells */
#define cDoPrintBrackets True
#define cDoNotPrintBrackets False
#define cDoPrintAttributes True
#define cDoNotPrintAttributes False
static void PrintAttributeVarWithEquations (AttrVarWithEquations avar)
{
/** if (avar -> ave_coercible)
{ switch (avar -> ave_refcount)
{
case RC_UsedOnceInLhs:
switch (avar -> ave_offrefcount)
{
case RC_NotUsed:
FPrintF (StdError, "<<%u>> ", avar -> ave_number);
break;
case RC_UsedOnceInLhs:
case RC_UsedInLhs:
FPrintF (StdError, "<%u> ", avar -> ave_number);
break;
default:
FPrintF (StdError, "%u ", avar -> ave_number);
break;
}
break;
case RC_UsedInRhs:
case RC_UsedOnceInRhs:
if (AppearOnlyAsOfferedAttrsInTheRhs (avar -> ave_equations))
FPrintF (StdError, "|%u| ", avar -> ave_number);
else
FPrintF (StdError, "%u ", avar -> ave_number);
break;
default:
FPrintF (StdError, "%u ", avar -> ave_number);
break;
}
}
else **/
FPrintF (StdError, "<%u> ", avar -> ave_number);
} /* PrintAttributeVarWithEquations */
static char *PrintVars = "abcdefghi";
#define NrOfPrintVars 9
static void PrintTypeVariable (TypeCell type_var)
{
if (type_var -> contents_vc_number < NrOfPrintVars)
FPutC (PrintVars [type_var -> contents_vc_number - 1], StdError);
else
FPrintF (StdError, "a%d", type_var -> contents_vc_number);
} /* PrintTypeVariable */
static void PrintTypeCell (TypeCell type, Bool brackets, Bool with_uni_attrs)
{
if (type == NULL)
FPutC ('_', StdError);
else
{ TypeCell ind_type = type;
SkipIndirections (type);
if (gSubType != NULL)
type = SkipTypeSynIndirection (type);
if (type == gSubType)
FPutS ("^ ", StdError);
if (with_uni_attrs)
{ if (ind_type -> tc_attrkind != AC_NotUnique)
{ if (ind_type -> tc_attrkind == AC_Unique)
FPutS ("* ", StdError);
else
{ switch (ind_type -> tc_attrvarkind)
{
case AVK_Plain:
FPrintF (StdError, "Plain %lu ", (unsigned long) ind_type -> tc_plainattrvar);
break;
case AVK_Equation:
PrintAttributeVarWithEquations (ind_type -> tc_equattrvar);
ind_type -> tc_equattrvar -> ave_present_mark = True;
break;
case AVK_Temporarily:
if (ind_type -> tc_tempattrvar -> tav_varkind == AC_Unique)
FPutS ("* ", StdError);
else if (ind_type -> tc_tempattrvar -> tav_varkind == AC_Variable)
FPrintF (StdError, "Temp %lu ", (unsigned long) ind_type -> tc_tempattrvar);
break;
}
}
}
}
switch (type -> tc_kind)
{
case BasicType:
PrintSymbol (type -> contents_basic, StdError);
return;
case ConstructorType:
{ SymbDef def = type -> contents_tc_symbdef;
if (def -> sdef_ident == ListId)
{ FPutC ('[', StdError);
if (type -> contents_tc_arity == 1)
PrintTypeCell (type -> contents_tc_args [0], cDoNotPrintBrackets, with_uni_attrs);
FPutC (']', StdError);
}
else if (def -> sdef_ident == TupleId)
{ FPutC ('(', StdError);
PrintTypeCells (type -> contents_tc_arity, type -> contents_tc_args, ',', False, with_uni_attrs);
FPutC (')', StdError);
}
else
{ ArrayInstance arr_inst;
for (arr_inst = 0; arr_inst < NrOfArrayInstances; arr_inst++)
{ if (def == ArrayDefs [arr_inst])
{ switch (arr_inst)
{
case LazyArrayInstance:
FPutC ('{', StdError);
break;
case StrictArrayInstance:
FPutS ("{!", StdError);
break;
case UnboxedArrayInstance:
FPutS ("{#", StdError);
break;
}
if (type -> contents_tc_arity == 1)
PrintTypeCell (type -> contents_tc_args [0], cDoNotPrintBrackets, with_uni_attrs);
FPutC ('}', StdError);
return;
}
}
if (brackets && type -> contents_tc_arity > 0)
FPutC ('(', StdError);
FPutS (def -> sdef_ident -> ident_name, StdError);
if (type -> contents_tc_arity > 0)
{ FPutC (' ', StdError);
PrintTypeCells (type -> contents_tc_arity, type -> contents_tc_args, ' ', True, with_uni_attrs);
if (brackets)
FPutC (')', StdError);
}
}
return;
}
case FunctionType:
{ TypeCell ft_arg = type -> contents_ft_arg;
if (brackets)
FPutC ('(', StdError);
PrintTypeCell (ft_arg, ft_arg -> tc_kind == FunctionType, with_uni_attrs);
FPutS (" -> ", StdError);
PrintTypeCell (type -> contents_ft_result, cDoNotPrintBrackets, with_uni_attrs);
if (brackets)
FPutC (')', StdError);
return;
}
case TypeVariable:
case ExistentialVariable:
if (! type -> tc_printed)
{ type -> contents_vc_number = NextTypeVariable++;
type -> tc_printed = True;
if (type -> tc_overloaded)
OverloadedTypeVariables = NewPolyListElem (type, OverloadedTypeVariables, TCTempSpace);
}
PrintTypeVariable (type);
return;
case VoidType:
FPutS ("Void", StdError);
return;
case ConstructorVariable:
FPutC ('(', StdError);
PrintTypeCells (type -> contents_cova_arity + 1, type -> contents_cova_types, ' ', False, with_uni_attrs);
FPutC (')', StdError);
return;
default:
Assume (False, TC2, "PrintTypeCell");
return;
}
}
} /* PrintTypeCell */
static void *AllocInTCTempSpace (SizeT size)
{
return TH_Alloc (TCTempSpace, size);
} /* AllocInTCTempSpace */
static void PrintSymbolList (SymbolList class_symbs)
{
SymbolList new_list = NULL;
ConvertClassSymbolTreeToList (class_symbs, & new_list, AllocInTCTempSpace);
FPutC (' ', StdError);
PrintTypeClass (new_list -> sl_symbol, StdError);
for (new_list = new_list -> sl_next; new_list; new_list = new_list -> sl_next)
{ FPutS (" , ", StdError);
PrintTypeClass (new_list -> sl_symbol, StdError);
}
} /* PrintTypeContext */
static void PrintTypeContexts (PolyList over_vars)
{
for (;;)
{ TypeCell next_var = (TypeCell) over_vars -> pl_elem;
PrintSymbolList (next_var -> contents_overloaded);
FPutC (' ', StdError);
PrintTypeVariable (next_var);
if ((over_vars = over_vars -> pl_next))
FPutS (" &", StdError);
else
break;
}
} /* PrintTypeContexts */
void PrintTCType (TypeCell type, TypeCell sub_type)
{
TypeCell prev_sub_type = gSubType;
gSubType = sub_type;
NextTypeVariable = 1;
OverloadedTypeVariables = NULL;
PrintTypeCell (type, cDoNotPrintBrackets, cDoNotPrintAttributes);
if (OverloadedTypeVariables)
{ FPutS (" |", StdError);
PrintTypeContexts (OverloadedTypeVariables);
}
gSubType = prev_sub_type;
} /* PrintTCType */
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