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stype.c

/* -----------------------------------------------------------------------------
 * stype.c
 *
 *     This file provides general support for datatypes that are encoded in
 *     the form of simple strings.
 *
 * Author(s) : David Beazley (beazley@cs.uchicago.edu)
 *
 * Copyright (C) 1999-2000.  The University of Chicago
 * See the file LICENSE for information on usage and redistribution.
 * ----------------------------------------------------------------------------- */

char cvsroot_stype_c[] = "/cvsroot/SWIG/Source/Swig/stype.c,v 1.42 2003/11/28 19:06:35 beazley Exp";

#include "swig.h"
#include <ctype.h>

/* -----------------------------------------------------------------------------
 * Synopsis
 *
 * The purpose of this module is to provide a general purpose type representation
 * based on simple text strings. 
 *
 * General idea:
 *
 * Types are represented by a base type (e.g., "int") and a collection of
 * type operators applied to the base (e.g., pointers, arrays, etc...).
 *
 * Encoding:
 *
 * Types are encoded as strings of type constructors such as follows:
 *
 *        String Encoding                 C Example
 *        ---------------                 ---------
 *        p.p.int                         int **
 *        a(300).a(400).int               int [300][400]
 *        p.q(const).char                 char const *
 *
 * All type constructors are denoted by a trailing '.':
 * 
 *  'p.'                = Pointer (*)
 *  'r.'                = Reference (&)
 *  'a(n).'             = Array of size n  [n]
 *  'f(..,..).'         = Function with arguments  (args)
 *  'q(str).'           = Qualifier (such as const or volatile) (const, volatile)
 *  'm(qual).'          = Pointer to member (qual::*)
 *
 * The encoding follows the order that you might describe a type in words.
 * For example "p.a(200).int" is "A pointer to array of int's" and
 * "p.q(const).char" is "a pointer to a const char".
 *
 * This representation of types is fairly convenient because ordinary string
 * operations can be used for type manipulation. For example, a type could be
 * formed by combining two strings such as the following:
 *
 *        "p.p." + "a(400).int" = "p.p.a(400).int"
 *
 * Similarly, one could strip a 'const' declaration from a type doing something
 * like this:
 *
 *        Replace(t,"q(const).","",DOH_REPLACE_ANY)
 *
 * For the most part, this module tries to minimize the use of special
 * characters (*, [, <, etc...) in its type encoding.  One reason for this
 * is that SWIG might be extended to encode data in formats such as XML
 * where you might want to do this:
 * 
 *      <function>
 *         <type>p.p.int</type>
 *         ...
 *      </function>
 *
 * Or alternatively,
 *
 *      <function type="p.p.int" ...>blah</function>
 *
 * In either case, it's probably best to avoid characters such as '&', '*', or '<'.
 *
 * Why not use C syntax?  Well, C syntax is fairly complicated to parse
 * and not particularly easy to manipulate---especially for adding, deleting and
 * composing type constructors.  The string representation presented here makes
 * this pretty easy.
 *
 * Why not use a bunch of nested data structures?  Are you kidding? How
 * would that be easier to use than a few simple string operations? 
 * ----------------------------------------------------------------------------- */


SwigType *NewSwigType(int t) {
  switch(t) {
  case T_BOOL:
    return NewString("bool");
    break;
  case T_INT:
    return NewString("int");
    break;
  case T_UINT:
    return NewString("unsigned int");
    break;
  case T_SHORT:
    return NewString("short");
    break;
  case T_USHORT:
    return NewString("unsigned short");
    break;
  case T_LONG: 
    return NewString("long");
    break;
  case T_ULONG:
    return NewString("unsigned long");
    break;
  case T_FLOAT:
    return NewString("float");
    break;
  case T_DOUBLE:
    return NewString("double");
    break;
  case T_CHAR:
    return NewString("char");
    break;
  case T_SCHAR:
    return NewString("signed char");
    break;
  case T_UCHAR:
    return NewString("unsigned char");
    break;
  case T_STRING: {
    SwigType *t = NewString("char");
    SwigType_add_pointer(t);
    return t;
    break;
  }
  case T_LONGLONG:
    return NewString("long long");
    break;
  case T_ULONGLONG:
    return NewString("unsigned long long");
    break;
  case T_VOID:
    return NewString("void");
    break;
  default :
    return NewString("");
    break;
  }
}

/* -----------------------------------------------------------------------------
 * SwigType_push()
 *
 * Push a type constructor onto the type
 * ----------------------------------------------------------------------------- */

void SwigType_push(SwigType *t, String *cons)
{
  if (!cons) return;
  if (!Len(cons)) return;

  if (Len(t)) {
    char *c = Char(cons);
    if (c[strlen(c)-1] != '.')
      Insert(t,0,".");
  }
  Insert(t,0,cons);
}

/* -----------------------------------------------------------------------------
 * SwigType_ispointer()
 * SwigType_ispointer_return()
 * SwigType_isarray()
 * SwigType_isreference()
 * SwigType_isfunction()
 * SwigType_isqualifier()
 *
 * Testing functions for querying a raw datatype
 * ----------------------------------------------------------------------------- */

int SwigType_ispointer_return(SwigType *t) {
  char* c;
  int idx;
  if (!t) return 0;
  c = Char(t);
  idx = strlen(c)-4;
  if (idx >= 0) {
       return (strcmp(c+idx, ").p.") == 0);
  }
  return 0;
}

int SwigType_isreference_return(SwigType *t) {
  char* c;
  int idx;
  if (!t) return 0;
  c = Char(t);
  idx = strlen(c)-4;
  if (idx >= 0) {
       return (strcmp(c+idx, ").r.") == 0);
  }
  return 0;
}

int SwigType_isconst(SwigType *t) {
  char *c;
  if (!t) return 0;
  c = Char(t);
  if (strncmp(c,"q(",2) == 0) {
    String *q = SwigType_parm(t);
    if (strstr(Char(q),"const")) {
      Delete(q);
      return 1;
    }
    Delete(q);
  }
  /* Hmmm. Might be const through a typedef */
  if (SwigType_issimple(t)) {
    int ret;
    SwigType *td = SwigType_typedef_resolve(t);
    if (td) {
      ret = SwigType_isconst(td);
      Delete(td);
      return ret;
    }
  }
  return 0;
}

int SwigType_ismutable(SwigType *t) {
  int r;
  SwigType *qt = SwigType_typedef_resolve_all(t);
  if (SwigType_isreference(qt)) {
    Delete(SwigType_pop(qt));
  }
  r = SwigType_isconst(qt);
  Delete(qt);
  return r ? 0 : 1;
}

int SwigType_isenum(SwigType *t) {
  char *c = Char(t);
  if (!t) return 0;
  if (strncmp(c,"enum ",5) == 0) {
    return 1;
  }
  return 0;
}

int SwigType_issimple(SwigType *t) {
  char *c = Char(t);
  if (!t) return 0;
  while (*c) {
    if (*c == '<') {
      int nest = 1;
      c++;
      while (*c && nest) {
      if (*c == '<') nest++;
      if (*c == '>') nest--;
      c++;
      }
      c--;
    }
    if (*c == '.') return 0;
    c++;
  }
  return 1;
}

/* -----------------------------------------------------------------------------
 * SwigType_default()
 *
 * Create the default string for this datatype.   This takes a type and strips it
 * down to its most primitive form--resolving all typedefs and removing operators.
 *
 * Rules:
 *     Pointers:      p.SWIGTYPE
 *     References:    r.SWIGTYPE
 *     Arrays:        a().SWIGTYPE
 *     Types:         SWIGTYPE
 *     MemberPointer: m(CLASS).SWIGTYPE
 *     Enums:         enum SWIGENUM
 *
 * Note: if this function is applied to a primitive type, it returns NULL.  This
 * allows recursive application for special types like arrays.
 * ----------------------------------------------------------------------------- */

static Hash *default_cache = 0;

SwigType *SwigType_default(SwigType *t) {
  String *r1, *def;
  String *r = 0;

  if (!default_cache) default_cache = NewHash();
  
  r = Getattr(default_cache,t);
  if (r) {
    if (Strcmp(r,t) == 0) return 0;
    return Copy(r);
  }
 
  if (SwigType_isvarargs(t)) {
    return 0;
  }

  r = t;
  while ((r1 = SwigType_typedef_resolve(r))) {
    if (r != t) Delete(r);
    r = r1;
  }
  if (SwigType_isqualifier(r)) {
    if (r == t) r = Copy(t);
    do {
      Delete(SwigType_pop(r));
    } while (SwigType_isqualifier(r));
  }
  if (SwigType_ispointer(r)) {
    def = NewString("p.SWIGTYPE");
  } else if (SwigType_isreference(r)) {
    def = NewString("r.SWIGTYPE");
  } else if (SwigType_isarray(r)) {
    if (Strcmp(r,"a(ANY).SWIGTYPE") == 0) {
      def = NewString("a().SWIGTYPE");
    } else {
      int i, empty = 0;
      int ndim = SwigType_array_ndim(r);
      for (i = 0; i < ndim; i++) {
      String *dim = SwigType_array_getdim(r,i);
      if (!Len(dim)) {
        empty = 1;
      }
      Delete(dim);
      }
      if (empty) {
      def = NewString("a().SWIGTYPE");
      } else {
      def = NewString("a(ANY).SWIGTYPE");
      }
    }
  } else if (SwigType_ismemberpointer(r)) {
    def = NewString("m(CLASS).SWIGTYPE");
  } else if (SwigType_isenum(r)) {
    def = NewString("enum SWIGTYPE");
  } else {
    def = NewString("SWIGTYPE");
  }
  if (r != t) Delete(r);
  Setattr(default_cache,t,Copy(def));
  if (Strcmp(def,t) == 0) {
    Delete(def);
    def = 0;
  }
  return def;
}

/* -----------------------------------------------------------------------------
 * SwigType_namestr()
 *
 * Returns a string of the base type.  Takes care of template expansions
 * ----------------------------------------------------------------------------- */

String *
SwigType_namestr(const SwigType *t) {
  String *r;
  String *suffix;
  List   *p;
  char   tmp[256];
  char   *c, *d, *e;
  int     i, sz;

  if (!SwigType_istemplate(t)) return NewString(t);

  c = Strstr(t,"<(");

  d = Char(t);
  e = tmp;
  while (d != c) {
    *(e++) = *(d++);
  }
  *e = 0;
  r = NewString(tmp);
  Putc('<',r);
  
  p = SwigType_parmlist(t);
  sz = Len(p);
  for (i = 0; i < sz; i++) {
    Append(r,SwigType_str(Getitem(p,i),0));
    if ((i+1) < sz) Putc(',',r);
  }
  Putc(' ',r);
  Putc('>',r);
  suffix = SwigType_templatesuffix(t);
  Append(r,suffix);
  Delete(suffix);
#if 0
  if (SwigType_istemplate(r)) {
    SwigType *rr = SwigType_namestr(r);
    Delete(r);
    return rr;
  }
#endif
  return r;
}

/* -----------------------------------------------------------------------------
 * SwigType_str()
 *
 * Create a C string representation of a datatype.
 * ----------------------------------------------------------------------------- */

String *
SwigType_str(SwigType *s, const String_or_char *id)
{
  String *result;
  String *element = 0, *nextelement;
  List *elements;
  int nelements, i;

  if (id) {
    result = NewString(Char(id));
  } else {
    result = NewString("");
  }

  elements = SwigType_split(s);
  nelements = Len(elements);

  if (nelements > 0) {
    element = Getitem(elements,0);
  }
  /* Now, walk the type list and start emitting */
  for (i = 0; i < nelements; i++) {
    if (i < (nelements - 1)) {
      nextelement = Getitem(elements,i+1);
    } else {
      nextelement = 0;
    }
    if (SwigType_isqualifier(element)) {
      DOH *q = 0;
      q = SwigType_parm(element);
      Insert(result,0," ");
      Insert(result,0,q);
      Delete(q);
    } else if (SwigType_ispointer(element)) {
      Insert(result,0,"*");
      if ((nextelement) && ((SwigType_isfunction(nextelement) || (SwigType_isarray(nextelement))))) {
      Insert(result,0,"(");
      Append(result,")");
      }
    } else if (SwigType_ismemberpointer(element)) {
      String *q;
      q = SwigType_parm(element);
      Insert(result,0,"::*");
      Insert(result,0,q);
      if ((nextelement) && ((SwigType_isfunction(nextelement) || (SwigType_isarray(nextelement))))) {
      Insert(result,0,"(");
      Append(result,")");
      }
      Delete(q);
    }
    else if (SwigType_isreference(element)) {
      Insert(result,0,"&");
      if ((nextelement) && ((SwigType_isfunction(nextelement) || (SwigType_isarray(nextelement))))) {
      Insert(result,0,"(");
      Append(result,")");
      }
    }  else if (SwigType_isarray(element)) {
      DOH *size;
      Append(result,"[");
      size = SwigType_parm(element);
      Append(result,size);
      Append(result,"]");
      Delete(size);
    } else if (SwigType_isfunction(element)) {
      DOH *parms, *p;
      int j, plen;
      Append(result,"(");
      parms = SwigType_parmlist(element);
      plen = Len(parms);
      for (j = 0; j < plen; j++) {
      p = SwigType_str(Getitem(parms,j),0);
      Append(result,p);
      if (j < (plen-1)) Append(result,",");
      }
      Append(result,")");
      Delete(parms);
    } else {
      if (Strcmp(element,"v(...)") == 0) {
      Insert(result,0,"...");
      } else {
      String *bs = SwigType_namestr(element);
      Insert(result,0," ");
      Insert(result,0,bs);
      Delete(bs);
      }
    }
    element = nextelement;
  }
  Delete(elements);
  Chop(result);
  return result;
}

/* -----------------------------------------------------------------------------
 * SwigType_ltype(SwigType *ty)
 *
 * Create a locally assignable type
 * ----------------------------------------------------------------------------- */

SwigType *
SwigType_ltype(SwigType *s) {
  String *result;
  String *element;
  SwigType *td, *tc = 0;
  List *elements;
  int nelements, i;
  int firstarray = 1;

  result = NewString("");
  tc = Copy(s);
  /* Nuke all leading qualifiers */
  while (SwigType_isqualifier(tc)) {
    Delete(SwigType_pop(tc));
  }
  if (SwigType_issimple(tc)) {
    /* Resolve any typedef definitions */
    td = SwigType_typedef_resolve(tc);
    if (td && (SwigType_isconst(td) || SwigType_isarray(td) || SwigType_isenum(td) || SwigType_isreference(td))) {
      /* We need to use the typedef type */
      Delete(tc);
      tc = td;
    } else if (td) {
      Delete(td);
    }
  }
  elements = SwigType_split(tc);
  nelements = Len(elements);
  /* Now, walk the type list and start emitting */
  for (i = 0; i < nelements; i++) {
    element = Getitem(elements,i);
    if (SwigType_isqualifier(element)) {
      /* Do nothing. Ignore */
    } else if (SwigType_ispointer(element)) {
      Append(result,element);
      firstarray = 0;
    } else if (SwigType_ismemberpointer(element)) {
      Append(result,element);
      firstarray = 0;
    } else if (SwigType_isreference(element)) {
      Append(result,"p.");
      firstarray = 0;
    } else if (SwigType_isarray(element) && firstarray) {
      Append(result,"p.");
      firstarray = 0;
    } else if (SwigType_isenum(element)) {
      Append(result,"int");
    } else {
      Append(result,element);
    }
  }
  Delete(elements);
  Delete(tc);
  return result;
}

/* -----------------------------------------------------------------------------
 * SwigType_lstr(DOH *s, DOH *id)
 *
 * Produces a type-string that is suitable as a lvalue in an expression.
 * That is, a type that can be freely assigned a value without violating
 * any C assignment rules.
 *
 *      -   Qualifiers such as 'const' and 'volatile' are stripped.
 *      -   Arrays are converted into a *single* pointer (i.e.,
 *          double [][] becomes double *).
 *      -   References are converted into a pointer.
 *      -   Typedef names that refer to read-only types will be replaced
 *          with an equivalent assignable version.
 * -------------------------------------------------------------------- */

String *
SwigType_lstr(SwigType *s, const String_or_char *id)
{
  String *result;
  SwigType  *tc;

  tc = SwigType_ltype(s);
  result = SwigType_str(tc,id);
  Delete(tc);
  return result;
}

/* -----------------------------------------------------------------------------
 * SwigType_rcaststr()
 *
 * Produces a casting string that maps the type returned by lstr() to the real 
 * datatype printed by str().
 * ----------------------------------------------------------------------------- */

String *SwigType_rcaststr(SwigType *s, const String_or_char *name) {
  String *result, *cast;
  String *element = 0, *nextelement;
  SwigType *td, *rs, *tc = 0;
  List *elements;
  int      nelements, i;
  int      clear = 1;
  int      firstarray = 1;
  int      isreference = 0;
  int      isarray = 0;

  result = NewString("");

  if (SwigType_isconst(s)) {
    tc = Copy(s);
    Delete(SwigType_pop(tc));
    rs = tc;
  } else {
    rs = s;
  }

  if (SwigType_issimple(rs)) {
    td = SwigType_typedef_resolve(rs);
    if ((td) && (SwigType_isconst(td) || SwigType_isarray(td) || SwigType_isreference(td))) {
      elements = SwigType_split(td);
    } else if (td && SwigType_isenum(td)) {
      elements = SwigType_split(rs);
      clear = 0;
    } else {
      elements = SwigType_split(rs);
    } 
    if (td) Delete(td);
  } else {
    elements = SwigType_split(rs);
  }
  nelements = Len(elements);
  if (nelements > 0) {
    element = Getitem(elements,0);
  }
  /* Now, walk the type list and start emitting */
  for (i = 0; i < nelements; i++) {
    if (i < (nelements - 1)) {
      nextelement = Getitem(elements,i+1);
    } else {
      nextelement = 0;
    }
    if (SwigType_isqualifier(element)) {
      DOH *q = 0;
      q = SwigType_parm(element);
      Insert(result,0," ");
      Insert(result,0,q);
      Delete(q);
      clear = 0;
    } else if (SwigType_ispointer(element)) {
      Insert(result,0,"*");
      if ((nextelement) && ((SwigType_isfunction(nextelement) || (SwigType_isarray(nextelement))))) {
      Insert(result,0,"(");
      Append(result,")");
      }
      firstarray = 0;
    } else  if (SwigType_ismemberpointer(element)) {
      String *q;
      Insert(result,0,"::*");
      q = SwigType_parm(element);
      Insert(result,0,q);
      Delete(q);
      if ((nextelement) && ((SwigType_isfunction(nextelement) || (SwigType_isarray(nextelement))))) {
      Insert(result,0,"(");
      Append(result,")");
      }
      firstarray = 0;
    } else if (SwigType_isreference(element)) {
      Insert(result,0,"&");
      if ((nextelement) && ((SwigType_isfunction(nextelement) || (SwigType_isarray(nextelement))))) {
        Insert(result,0,"(");
        Append(result,")");
      }
      isreference = 1;
    } else if (SwigType_isarray(element)) {
      DOH *size;
      if (firstarray && !isreference) {
      Append(result,"(*)");
      firstarray = 0;
      } else {
      Append(result,"[");
      size = SwigType_parm(element);
      Append(result,size);
      Append(result,"]");
      Delete(size);
      clear = 0;
      }
      isarray = 1;
    } else if (SwigType_isfunction(element)) {
      DOH *parms, *p;
      int j, plen;
      Append(result,"(");
      parms = SwigType_parmlist(element);
      plen = Len(parms);
      for (j = 0; j < plen; j++) {
      p = SwigType_str(Getitem(parms,j),0);
      Append(result,p);
      if (j < (plen-1)) Append(result,",");
      }
      Append(result,")");
      Delete(parms);
    } else if (SwigType_isenum(element)) {
      String *bs = SwigType_namestr(element);
      Insert(result,0,bs);
      Delete(bs);
      clear = 0;
    } else {
      String *bs = SwigType_namestr(element);
      Insert(result,0," ");
      Insert(result,0,bs);
      Delete(bs);
    }
    element = nextelement;
  }
  Delete(elements);
  if (clear) {
    cast = NewString("");
  } else {
    cast = NewStringf("(%s)",result);
  }
  if (name) {
    if (isreference) {
      if (isarray) Clear(cast);
      Append(cast,"*");
    }
    Append(cast,name);
  }
  Delete(result);
  Delete(tc);
  return cast;
}


/* -----------------------------------------------------------------------------
 * SwigType_lcaststr()
 *
 * Casts a variable from the real type to the local datatype.
 * ----------------------------------------------------------------------------- */

String *SwigType_lcaststr(SwigType *s, const String_or_char *name) {
  String *result;

  result = NewString("");

  if (SwigType_isarray(s)) {
    Printf(result,"(%s)%s", SwigType_lstr(s,0),name);
  } else if (SwigType_isreference(s)) {
    Printf(result,"(%s)", SwigType_str(s,0));
    if (name) 
      Printv(result,name,NIL);
  } else if (SwigType_isqualifier(s)) {
    Printf(result,"(%s)%s", SwigType_lstr(s,0),name);
  } else {
    if (name)
      Append(result,name);
  }
  return result;
}

String *SwigType_manglestr_default(SwigType *s) {
  char *c;
  String *result,*base;
  SwigType *lt;
  SwigType *ss = 0;

  if (SwigType_istemplate(s)) {
    ss = SwigType_typedef_resolve_all(s);
    s = ss;
  }
  lt = SwigType_ltype(s);
  result = SwigType_prefix(lt);
  base = SwigType_base(lt);

  c = Char(result);
  while (*c) {
    if (!isalnum((int)*c)) *c = '_';
    c++;
  }
  if (SwigType_istemplate(base)) {
    String *b = SwigType_namestr(base);
    Delete(base);
    base = b;
  }

  Replace(base,"struct ","", DOH_REPLACE_ANY);     /* This might be problematic */
  Replace(base,"class ","", DOH_REPLACE_ANY);
  Replace(base,"union ","", DOH_REPLACE_ANY);

  c = Char(base);
  while (*c) {
    if (*c == '<') *c = 'T';
    else if (*c == '>') *c = 't';
    else if (*c == '*') *c = 'p';
    else if (*c == '[') *c = 'a';
    else if (*c == ']') *c = 'A';
    else if (*c == '&') *c = 'R';
    else if (*c == '(') *c = 'f';
    else if (*c == ')') *c = 'F';
    else if (!isalnum((int)*c)) *c = '_';
    c++;
  }
  Append(result,base);
  Insert(result,0,"_");
  Delete(lt);
  Delete(base);
  if (ss) Delete(ss);
  return result;
}

String *SwigType_manglestr(SwigType *s) {
  return SwigType_manglestr_default(s);
}

/* -----------------------------------------------------------------------------
 * SwigType_typename_replace()
 *
 * Replaces a typename in a type with something else.  Needed for templates.
 * ----------------------------------------------------------------------------- */

void
SwigType_typename_replace(SwigType *t, String *pat, String *rep) {
  String *nt;
  int    i;
  List   *elem;

  if (!Strstr(t,pat)) return;

  if (Strcmp(t,pat) == 0) {
    Replace(t,pat,rep,DOH_REPLACE_ANY);
    return;
  }
  nt = NewString("");
  elem = SwigType_split(t);
  for (i = 0; i < Len(elem); i++) {
    String *e = Getitem(elem,i);
    if (SwigType_issimple(e)) {
      if (Strcmp(e,pat) == 0) {
      /* Replaces a type of the form 'pat' with 'rep<args>' */
      Replace(e,pat,rep,DOH_REPLACE_ANY);
      } else if (SwigType_istemplate(e)) {
         /* Replaces a type of the form 'pat<args>' with 'rep' */
      if (Strncmp(e,pat,Len(pat)) == 0) {
        String *repbase = SwigType_templateprefix(rep);
        Replace(e,pat,repbase,DOH_REPLACE_ID | DOH_REPLACE_FIRST);
        Delete(repbase);
      } 
      {
        String *tsuffix;
        List *tparms = SwigType_parmlist(e);
        int j;
        String *nt = SwigType_templateprefix(e);
        Printv(nt,"<(",NIL);
        for (j = 0; j < Len(tparms); j++) {
          SwigType_typename_replace(Getitem(tparms,j), pat, rep);
          Printv(nt,Getitem(tparms,j),NIL);
          if (j < (Len(tparms)-1)) Putc(',',nt);
        }
        tsuffix = SwigType_templatesuffix(e);
        Printf(nt,")>%s", tsuffix);
        Delete(tsuffix);
        Clear(e);
        Append(e,nt);
        Delete(nt);
        Delete(tparms);
      }
      } else if (Swig_scopename_check(e)) {
      String *first, *rest;
      first = Swig_scopename_first(e);
      rest = Swig_scopename_suffix(e);
      SwigType_typename_replace(rest,pat,rep);
      SwigType_typename_replace(first,pat,rep);
      Clear(e);
      Printv(e,first,"::",rest,NIL);
      Delete(first);
      Delete(rest);
      }
    } else if (SwigType_isfunction(e)) {
      int j;
      List *fparms = SwigType_parmlist(e);
      Clear(e);
      Printv(e,"f(",NIL);
      for (j = 0; j < Len(fparms); j++) {
      SwigType_typename_replace(Getitem(fparms,j), pat, rep);
      Printv(e,Getitem(fparms,j),NIL);
      if (j < (Len(fparms)-1)) Putc(',',e);
      }
      Printv(e,").",NIL);
      Delete(fparms);
    } else if (SwigType_isarray(e)) {
      Replace(e,pat,rep, DOH_REPLACE_ID);
    }
    Append(nt,e);
  }
  Clear(t);
  Append(t,nt);
}

/* -----------------------------------------------------------------------------
 * SwigType_check_decl()
 *
 * Checks type declarators for a match
 * ----------------------------------------------------------------------------- */

int
SwigType_check_decl(SwigType *ty, const SwigType *decl) {
  SwigType *t,*t1,*t2;
  int r;
  t = SwigType_typedef_resolve_all(ty);
  t1 = SwigType_strip_qualifiers(t);
  t2 = SwigType_prefix(t1);
  r = Cmp(t2,decl);
  Delete(t);
  Delete(t1);
  Delete(t2);
  if (r == 0) return 1;
  return 0;
}

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