1 files changed, 398 insertions, 0 deletions
diff --git a/Source/Modules/uffi.cxx b/Source/Modules/uffi.cxx
new file mode 100644
index 0000000..780b9e8
--- /dev/null
+++ b/Source/Modules/uffi.cxx
@@ -0,0 +1,398 @@
+/* ----------------------------------------------------------------------------- 
+ * See the LICENSE file for information on copyright, usage and redistribution
+ * of SWIG, and the README file for authors - http://www.swig.org/release.html.
+ *
+ * uffi.cxx
+ *
+ * Uffi language module for SWIG.
+ * ----------------------------------------------------------------------------- */
+
+// TODO: remove remnants of lisptype
+
+char cvsroot_uffi_cxx[] = "$Id: uffi.cxx 11380 2009-07-08 12:17:45Z wsfulton $";
+
+#include "swigmod.h"
+
+class UFFI:public Language {
+public:
+
+  virtual void main(int argc, char *argv[]);
+  virtual int top(Node *n);
+  virtual int functionWrapper(Node *n);
+  virtual int constantWrapper(Node *n);
+  virtual int classHandler(Node *n);
+  virtual int membervariableHandler(Node *n);
+
+};
+
+static File *f_cl = 0;
+
+static struct {
+  int count;
+  String **entries;
+} defined_foreign_types;
+
+static const char *identifier_converter = "identifier-convert-null";
+
+static int any_varargs(ParmList *pl) {
+  Parm *p;
+
+  for (p = pl; p; p = nextSibling(p)) {
+    if (SwigType_isvarargs(Getattr(p, "type")))
+      return 1;
+  }
+
+  return 0;
+}
+
+
+/* utilities */
+/* returns new string w/ parens stripped */
+static String *strip_parens(String *string) {
+  char *s = Char(string), *p;
+  int len = Len(string);
+  String *res;
+
+  if (len == 0 || s[0] != '(' || s[len - 1] != ')') {
+    return NewString(string);
+  }
+
+  p = (char *) malloc(len - 2 + 1);
+  if (!p) {
+    Printf(stderr, "Malloc failed\n");
+    SWIG_exit(EXIT_FAILURE);
+  }
+
+  strncpy(p, s + 1, len - 1);
+  p[len - 2] = 0;		/* null terminate */
+
+  res = NewString(p);
+  free(p);
+
+  return res;
+}
+
+
+static String *convert_literal(String *num_param, String *type) {
+  String *num = strip_parens(num_param), *res;
+  char *s = Char(num);
+
+  /* Make sure doubles use 'd' instead of 'e' */
+  if (!Strcmp(type, "double")) {
+    String *updated = Copy(num);
+    if (Replace(updated, "e", "d", DOH_REPLACE_ANY) > 1) {
+      Printf(stderr, "Weird!! number %s looks invalid.\n", num);
+      SWIG_exit(EXIT_FAILURE);
+    }
+    Delete(num);
+    return updated;
+  }
+
+  if (SwigType_type(type) == T_CHAR) {
+    /* Use CL syntax for character literals */
+    return NewStringf("#\\%s", num_param);
+  } else if (SwigType_type(type) == T_STRING) {
+    /* Use CL syntax for string literals */
+    return NewStringf("\"%s\"", num_param);
+  }
+
+  if (Len(num) < 2 || s[0] != '0') {
+    return num;
+  }
+
+  /* octal or hex */
+
+  res = NewStringf("#%c%s", s[1] == 'x' ? 'x' : 'o', s + 2);
+  Delete(num);
+
+  return res;
+}
+
+static void add_defined_foreign_type(String *type) {
+  if (!defined_foreign_types.count) {
+    /* Make fresh */
+    defined_foreign_types.count = 1;
+    defined_foreign_types.entries = (String **) malloc(sizeof(String *));
+  } else {
+    /* make room */
+    defined_foreign_types.count++;
+    defined_foreign_types.entries = (String **)
+	realloc(defined_foreign_types.entries, defined_foreign_types.count * sizeof(String *));
+  }
+
+  if (!defined_foreign_types.entries) {
+    Printf(stderr, "Out of memory\n");
+    SWIG_exit(EXIT_FAILURE);
+  }
+
+  /* Fill in the new data */
+  defined_foreign_types.entries[defined_foreign_types.count - 1] = Copy(type);
+
+}
+
+
+static String *get_ffi_type(Node *n, SwigType *ty, const_String_or_char_ptr name) {
+  Node *node = NewHash();
+  Setattr(node, "type", ty);
+  Setattr(node, "name", name);
+  Setfile(node, Getfile(n));
+  Setline(node, Getline(n));
+  const String *tm = Swig_typemap_lookup("ffitype", node, "", 0);
+  Delete(node);
+
+  if (tm) {
+    return NewString(tm);
+  } else {
+    SwigType *tr = SwigType_typedef_resolve_all(ty);
+    char *type_reduced = Char(tr);
+    int i;
+
+    //Printf(stdout,"convert_type %s\n", ty);
+    if (SwigType_isconst(tr)) {
+      SwigType_pop(tr);
+      type_reduced = Char(tr);
+    }
+
+    if (SwigType_ispointer(type_reduced) || SwigType_isarray(ty) || !strncmp(type_reduced, "p.f", 3)) {
+      return NewString(":pointer-void");
+    }
+
+    for (i = 0; i < defined_foreign_types.count; i++) {
+      if (!Strcmp(ty, defined_foreign_types.entries[i])) {
+	return NewStringf("#.(%s \"%s\" :type :type)", identifier_converter, ty);
+      }
+    }
+
+    if (!Strncmp(type_reduced, "enum ", 5)) {
+      return NewString(":int");
+    }
+
+    Printf(stderr, "Unsupported data type: %s (was: %s)\n", type_reduced, ty);
+    SWIG_exit(EXIT_FAILURE);
+  }
+  return 0;
+}
+
+static String *get_lisp_type(Node *n, SwigType *ty, const_String_or_char_ptr name) {
+  Node *node = NewHash();
+  Setattr(node, "type", ty);
+  Setattr(node, "name", name);
+  Setfile(node, Getfile(n));
+  Setline(node, Getline(n));
+  const String *tm = Swig_typemap_lookup("lisptype", node, "", 0);
+  Delete(node);
+
+  return tm ? NewString(tm) : NewString("");
+}
+
+void UFFI::main(int argc, char *argv[]) {
+  int i;
+
+  Preprocessor_define("SWIGUFFI 1", 0);
+  SWIG_library_directory("uffi");
+  SWIG_config_file("uffi.swg");
+
+
+  for (i = 1; i < argc; i++) {
+    if (!strcmp(argv[i], "-identifier-converter")) {
+      char *conv = argv[i + 1];
+
+      if (!conv)
+	Swig_arg_error();
+
+      Swig_mark_arg(i);
+      Swig_mark_arg(i + 1);
+      i++;
+
+      /* check for built-ins */
+      if (!strcmp(conv, "lispify")) {
+	identifier_converter = "identifier-convert-lispify";
+      } else if (!strcmp(conv, "null")) {
+	identifier_converter = "identifier-convert-null";
+      } else {
+	/* Must be user defined */
+	char *idconv = new char[strlen(conv) + 1];
+	strcpy(idconv, conv);
+	identifier_converter = idconv;
+      }
+    }
+
+    if (!strcmp(argv[i], "-help")) {
+      fprintf(stdout, "UFFI Options (available with -uffi)\n");
+      fprintf(stdout,
+	      "    -identifier-converter <type or funcname>\n"
+	      "\tSpecifies the type of conversion to do on C identifiers to convert\n"
+	      "\tthem to symbols.  There are two built-in converters:  'null' and\n"
+	      "\t 'lispify'.  The default is 'null'.  If you supply a name other\n"
+	      "\tthan one of the built-ins, then a function by that name will be\n"
+	      "\tcalled to convert identifiers to symbols.\n");
+    }
+  }
+}
+
+int UFFI::top(Node *n) {
+  String *module = Getattr(n, "name");
+  String *output_filename = NewString("");
+  File *f_null = NewString("");
+
+  Printf(output_filename, "%s%s.cl", SWIG_output_directory(), module);
+
+
+  f_cl = NewFile(output_filename, "w", SWIG_output_files());
+  if (!f_cl) {
+    FileErrorDisplay(output_filename);
+    SWIG_exit(EXIT_FAILURE);
+  }
+
+  Swig_register_filebyname("header", f_null);
+  Swig_register_filebyname("begin", f_null);
+  Swig_register_filebyname("runtime", f_null);
+  Swig_register_filebyname("wrapper", f_cl);
+
+  Swig_banner_target_lang(f_cl, ";;");
+
+  Printf(f_cl, "\n"
+	 ";; -*- Mode: Lisp; Syntax: ANSI-Common-Lisp; Base: 10; package: %s -*-\n\n(defpackage :%s\n  (:use :common-lisp :uffi))\n\n(in-package :%s)\n",
+	 module, module, module);
+  Printf(f_cl, "(eval-when (compile load eval)\n  (defparameter *swig-identifier-converter* '%s))\n", identifier_converter);
+
+  Language::top(n);
+
+  Close(f_cl);
+  Delete(f_cl);			// Delete the handle, not the file
+  Close(f_null);
+  Delete(f_null);
+
+  return SWIG_OK;
+}
+
+int UFFI::functionWrapper(Node *n) {
+  String *funcname = Getattr(n, "sym:name");
+  ParmList *pl = Getattr(n, "parms");
+  Parm *p;
+  int argnum = 0, first = 1, varargs = 0;
+
+  //Language::functionWrapper(n);
+
+  Printf(f_cl, "(swig-defun \"%s\"\n", funcname);
+  Printf(f_cl, "  (");
+
+  /* Special cases */
+
+  if (ParmList_len(pl) == 0) {
+    Printf(f_cl, ":void");
+  } else if (any_varargs(pl)) {
+    Printf(f_cl, "#| varargs |#");
+    varargs = 1;
+  } else {
+    for (p = pl; p; p = nextSibling(p), argnum++) {
+      String *argname = Getattr(p, "name");
+      SwigType *argtype = Getattr(p, "type");
+      String *ffitype = get_ffi_type(n, argtype, argname);
+      String *lisptype = get_lisp_type(n, argtype, argname);
+      int tempargname = 0;
+
+      if (!argname) {
+	argname = NewStringf("arg%d", argnum);
+	tempargname = 1;
+      }
+
+      if (!first) {
+	Printf(f_cl, "\n   ");
+      }
+      Printf(f_cl, "(%s %s %s)", argname, ffitype, lisptype);
+      first = 0;
+
+      Delete(ffitype);
+      Delete(lisptype);
+      if (tempargname)
+	Delete(argname);
+
+    }
+  }
+  Printf(f_cl, ")\n");		/* finish arg list */
+  Printf(f_cl, "  :returning %s\n"
+	 //"  :strings-convert t\n"
+	 //"  :call-direct %s\n"
+	 //"  :optimize-for-space t"
+	 ")\n", get_ffi_type(n, Getattr(n, "type"), "result")
+	 //,varargs ? "nil"  : "t"
+      );
+
+
+  return SWIG_OK;
+}
+
+int UFFI::constantWrapper(Node *n) {
+  String *type = Getattr(n, "type");
+  String *converted_value = convert_literal(Getattr(n, "value"), type);
+  String *name = Getattr(n, "sym:name");
+
+#if 0
+  Printf(stdout, "constant %s is of type %s. value: %s\n", name, type, converted_value);
+#endif
+
+  Printf(f_cl, "(swig-defconstant \"%s\" %s)\n", name, converted_value);
+
+  Delete(converted_value);
+
+  return SWIG_OK;
+}
+
+// Includes structs
+int UFFI::classHandler(Node *n) {
+
+  String *name = Getattr(n, "sym:name");
+  String *kind = Getattr(n, "kind");
+  Node *c;
+
+  if (Strcmp(kind, "struct")) {
+    Printf(stderr, "Don't know how to deal with %s kind of class yet.\n", kind);
+    Printf(stderr, " (name: %s)\n", name);
+    SWIG_exit(EXIT_FAILURE);
+  }
+
+  Printf(f_cl, "(swig-def-struct \"%s\"\n \n", name);
+
+  for (c = firstChild(n); c; c = nextSibling(c)) {
+    SwigType *type = Getattr(c, "type");
+    SwigType *decl = Getattr(c, "decl");
+    type = Copy(type);
+    SwigType_push(type, decl);
+    String *lisp_type;
+
+    if (Strcmp(nodeType(c), "cdecl")) {
+      Printf(stderr, "Structure %s has a slot that we can't deal with.\n", name);
+      Printf(stderr, "nodeType: %s, name: %s, type: %s\n", nodeType(c), Getattr(c, "name"), Getattr(c, "type"));
+      SWIG_exit(EXIT_FAILURE);
+    }
+
+
+    /* Printf(stdout, "Converting %s in %s\n", type, name); */
+    lisp_type = get_ffi_type(n, type, Getattr(c, "sym:name"));
+
+    Printf(f_cl, "  (#.(%s \"%s\" :type :slot) %s)\n", identifier_converter, Getattr(c, "sym:name"), lisp_type);
+
+    Delete(lisp_type);
+  }
+
+  // Language::classHandler(n);
+
+  Printf(f_cl, " )\n");
+
+  /* Add this structure to the known lisp types */
+  //Printf(stdout, "Adding %s foreign type\n", name);
+  add_defined_foreign_type(name);
+
+  return SWIG_OK;
+}
+
+int UFFI::membervariableHandler(Node *n) {
+  Language::membervariableHandler(n);
+  return SWIG_OK;
+}
+
+
+extern "C" Language *swig_uffi(void) {
+  return new UFFI();
+}