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wxWidgets/wxPython/wxSWIG/Modules/guile.cxx
Robin Dunn c90f71dd8c Since I have made several changes to SWIG over the years to accomodate 
special cases and other things in wxPython, and since I plan on making
several more, I've decided to put the SWIG sources in wxPython's CVS
instead of relying on maintaining patches.  This effectivly becomes a
fork of an obsolete version of SWIG, :-( but since SWIG 1.3 still
doesn't have some things I rely on in 1.1, not to mention that my
custom patches would all have to be redone, I felt that this is the
easier road to take.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@15307 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2002-04-29 19:56:57 +00:00

842 lines
24 KiB
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/*******************************************************************************
* Simplified Wrapper and Interface Generator (SWIG)
*
* Author : David Beazley
*
* Department of Computer Science
* University of Chicago
* 1100 E 58th Street
* Chicago, IL 60637
* beazley@cs.uchicago.edu
*
* Please read the file LICENSE for the copyright and terms by which SWIG
* can be used and distributed.
*******************************************************************************/
/***********************************************************************
* $Header$
*
* guile.cxx
*
* Definitions for adding functions to Guile 3.0
***********************************************************************/
#include "swig.h"
#include "guile.h"
static char *guile_usage = "\
Guile Options (available with -guile)\n\
None available. \n\n";
// ---------------------------------------------------------------------
// GUILE::parse_args(int argc, char *argv[])
//
// Parse arguments.
// ---------------------------------------------------------------------
void GUILE::parse_args(int argc, char *argv[]) {
int i;
sprintf(LibDir,"%s",guile_path);
// Look for certain command line options
// Look for additional command line options.
for (i = 1; i < argc; i++) {
if (argv[i]) {
if (strcmp(argv[i],"-help") == 0) {
fputs(guile_usage,stderr);
SWIG_exit(0);
}
}
}
// Add a symbol for this module
add_symbol("SWIGGUILE",0,0);
// Set name of typemaps
typemap_lang = "guile";
}
// --------------------------------------------------------------------
// GUILE::parse()
//
// Parse the input file
// --------------------------------------------------------------------
void GUILE::parse()
{
printf("Generating wrappers for Guile\n");
// Print out GUILE specific headers
headers();
// Run the parser
yyparse();
}
// ---------------------------------------------------------------------
// GUILE::set_module(char *mod_name)
//
// Sets the module name.
// Does nothing if it's already set (so it can be overridden as a command
// line option).
//
//----------------------------------------------------------------------
void GUILE::set_module(char *mod_name, char **) {
if (module) return;
module = new char[strlen(mod_name)+1];
strcpy(module,mod_name);
}
// ---------------------------------------------------------------------
// GUILE::set_init(char *iname)
//
// Sets the initialization function name.
// Does nothing if it's already set
//
//----------------------------------------------------------------------
void GUILE::set_init(char *iname) {
set_module(iname,0);
}
// ---------------------------------------------------------------------
// GUILE::headers(void)
//
// Generate the appropriate header files for GUILE interface.
// ----------------------------------------------------------------------
void GUILE::headers(void)
{
emit_banner(f_header);
fprintf(f_header,"/* Implementation : GUILE */\n\n");
fprintf(f_header,"#define SWIGGUILE\n");
fprintf(f_header,"#include <stdio.h>\n");
fprintf(f_header,"#include <string.h>\n");
fprintf(f_header,"#include <stdlib.h>\n");
// Write out hex conversion functions
if (!NoInclude) {
if (insert_file("guile.swg", f_header) == -1) {
fprintf(stderr,"SWIG : Fatal error. Unable to locate 'guile.swg' in SWIG library.\n");
SWIG_exit(1);
}
emit_hex(f_header);
} else {
fprintf(f_header,"#ifdef __cplusplus\n");
fprintf(f_header,"extern \"C\" {\n");
fprintf(f_header,"#endif\n");
fprintf(f_header,"extern void SWIG_MakePtr(char *, void *, char *);\n");
fprintf(f_header,"extern void SWIG_RegisterMapping(char *, char *, void *(*)(void *));\n");
fprintf(f_header,"extern char *SWIG_GetPtr(char *, void **, char *);\n");
fprintf(f_header,"#ifdef __cplusplus\n");
fprintf(f_header,"}\n");
fprintf(f_header,"#endif\n");
}
}
// --------------------------------------------------------------------
// GUILE::initialize()
//
// Output initialization code that registers functions with the
// interface.
// ---------------------------------------------------------------------
void GUILE::initialize()
{
int i;
if (!module) {
module = "swig_init";
fprintf(stderr,"SWIG : *** Warning. No module name specified.\n");
}
fprintf(f_header,"#define SWIG_init %s\n\n", module);
fprintf(f_init,"void %s() {\n", module);
if (InitNames) {
i = 0;
while (InitNames[i]) {
fprintf(f_init,"\t %s();\n",InitNames[i]);
i++;
}
}
}
// ---------------------------------------------------------------------
// GUILE::close(void)
//
// Wrap things up. Close initialization function.
// ---------------------------------------------------------------------
void GUILE::close(void)
{
emit_ptr_equivalence(f_init);
fprintf(f_init,"}\n");
}
// ----------------------------------------------------------------------
// GUILE::get_pointer(int parm, DataType *t)
//
// Emits code to get a pointer from a parameter and do type checking.
// parm is the parameter number. This function is only used
// in create_function().
// ----------------------------------------------------------------------
void GUILE::get_pointer(char *iname, int parm, DataType *t) {
// Pointers are read as hex-strings with encoded type information
fprintf(f_wrappers,"\t _tempc = gh_scm2newstr(s_%d, &_len);\n",parm);
fprintf(f_wrappers,"\t if (SWIG_GetPtr(_tempc, (void **) &_arg%d,",parm);
if (t->type == T_VOID) fprintf(f_wrappers,"(char *) 0)) {\n");
else
fprintf(f_wrappers,"\"%s\")) {\n", t->print_mangle());
// Now emit code according to the level of strictness desired
switch(TypeStrict) {
case 0: // No type checking
fprintf(f_wrappers,"\t}\n");
break;
case 1: // Warning message only
fprintf(f_wrappers,
"\t fprintf(stderr,\"Warning : type mismatch in argument %d of %s. Expected %s, received %%s\\n\", _tempc);\n", parm+1,iname, t->print_mangle());
fprintf(f_wrappers,"\t }\n");
break;
case 2: // Super strict mode.
// fprintf(f_wrappers,"\t\t gscm_error(\"Type error in argument %d of %s. Expected %s.\", s_%d);\n", parm+1,iname,t->print_mangle(),parm);
fprintf(f_wrappers,"\t}\n");
break;
default :
fprintf(stderr,"Unknown strictness level\n");
break;
}
}
// ----------------------------------------------------------------------
// GUILE::create_function(char *name, char *iname, DataType *d,
// ParmList *l)
//
// Create a function declaration and register it with the interpreter.
// ----------------------------------------------------------------------
void GUILE::create_function(char *name, char *iname, DataType *d, ParmList *l)
{
Parm *p;
int pcount;
char wname[256];
char source[64];
char target[64];
char *tm;
String cleanup;
int need_len = 0;
int need_tempc = 0;
// Make a wrapper name for this
strcpy(wname,iname);
make_wrap_name(wname);
// Now write the wrapper function itself....this is pretty ugly
fprintf(f_wrappers,"SCM _wrap_gscm_%s(",wname);
int i = 0;
p = l->get_first();
while (p != 0) {
if (p->t->is_pointer)
need_len = 1;
if ((p->t->type != T_CHAR) && (p->t->is_pointer))
need_tempc = 1;
if ((p->t->type != T_VOID) || (p->t->is_pointer))
fprintf(f_wrappers,"SCM s_%d", i);
if ((p = l->get_next()))
fprintf(f_wrappers,", ");
i++;
}
fprintf(f_wrappers,")\n{\n");
// Declare return variable and arguments
pcount = emit_args(d,l,f_wrappers);
// Now declare a few helper variables here
if (d->is_pointer && (d->type != T_CHAR) &&
!typemap_lookup("out","guile",d,name,"_result","scmresult"))
fprintf(f_wrappers," char _ptemp[128];\n");
if (need_tempc)
fprintf(f_wrappers," char *_tempc;\n");
if (need_len)
fprintf(f_wrappers," int _len;\n");
fprintf(f_wrappers," SCM scmresult; /* fun1 */\n");
// Now write code to extract the parameters(this is super ugly)
i = 0;
p = l->get_first();
while (p != 0) {
// Produce names of source and target
sprintf(source,"s_%d",i);
sprintf(target,"_arg%d",i);
if ((tm = typemap_lookup("in","guile",p->t,p->name,source,target))) {
// Yep. Use it instead of the default
fprintf(f_wrappers,"%s\n", tm);
} else {
if (!p->t->is_pointer) {
switch(p->t->type) {
// Signed Integers
case T_INT :
case T_SINT :
case T_SHORT:
case T_SSHORT:
case T_LONG:
case T_SLONG:
case T_SCHAR:
fprintf(f_wrappers,"\t _arg%d = %s gh_scm2long(s_%d);\n",i, p->t->print_cast(), i);
break;
// Unsigned Integers
case T_UINT:
case T_USHORT:
case T_ULONG:
case T_UCHAR:
fprintf(f_wrappers,"\t _arg%d = %s gh_scm2ulong(s_%d);\n", i, p->t->print_cast(), i);
break;
// A single character
case T_CHAR :
fprintf(f_wrappers,"\t _arg%d = %s gh_scm2char(s_%d);\n", i, p->t->print_cast(), i);
break;
// Floating point
case T_DOUBLE :
case T_FLOAT:
fprintf(f_wrappers,"\t _arg%d = %s gh_scm2double(s_%d);\n", i, p->t->print_cast(), i);
break;
// Void.. Do nothing.
case T_VOID :
break;
// This is some sort of user-defined call by value type. We're
// going to try and wing it here....
case T_USER:
// User defined type not allowed by value.
default :
fprintf(stderr,"%s : Line %d. Unable to use type %s as a function argument.\n",
input_file, line_number, p->t->print_type());
break;
}
} else {
// Argument is a pointer type. Special case is for char *
// since that is usually a string.
if ((p->t->type == T_CHAR) && (p->t->is_pointer == 1)) {
fprintf(f_wrappers,"\t _arg%d = gh_scm2newstr(s_%d, &_len);\n",i,i);
} else {
// Have a generic pointer type here.
get_pointer(iname, i, p->t);
}
}
}
if ((tm = typemap_lookup("check","guile",p->t,p->name,source,target))) {
// Yep. Use it instead of the default
fprintf(f_wrappers,"%s\n",tm);
}
if ((tm = typemap_lookup("freearg","guile",p->t,p->name,target,"scmresult"))) {
// Yep. Use it instead of the default
cleanup << tm << "\n";
}
p = l->get_next();
i++;
}
// Now write code to make the function call
fprintf(f_wrappers,"\t SCM_DEFER_INTS;\n");
emit_func_call(name,d,l,f_wrappers);
fprintf(f_wrappers,"\t SCM_ALLOW_INTS;\n");
// Now have return value, figure out what to do with it.
if ((d->type != T_VOID) || (d->is_pointer)) {
if ((tm = typemap_lookup("out","guile",d,name,"_result","scmresult"))) {
// Yep. Use it instead of the default
fprintf(f_wrappers,"%s\n",tm);
} else {
if (!d->is_pointer) {
switch(d->type) {
case T_INT: case T_SINT:
case T_SHORT: case T_SSHORT:
case T_LONG: case T_SLONG:
case T_SCHAR:
fprintf(f_wrappers,"\t scmresult = gh_long2scm((long) _result);\n");
break;
case T_UINT:
case T_USHORT:
case T_ULONG:
case T_UCHAR:
fprintf(f_wrappers,"\t scmresult = gh_ulong2scm((unsigned long) _result);\n");
break;
case T_DOUBLE :
case T_FLOAT:
fprintf(f_wrappers,"\t scmresult = gh_double2scm((double) _result);\n");
break;
case T_CHAR :
fprintf(f_wrappers,"\t scmresult = gh_char2scm(_result);\n");
break;
default:
fprintf(stderr,"%s : Line %d: Unable to use return type %s in function %s.\n",
input_file, line_number, d->print_type(), name);
break;
}
} else {
// Is a pointer return type
if ((d->type == T_CHAR) && (d->is_pointer == 1)) {
fprintf(f_wrappers,"\t scmresult = gh_str02scm(_result);\n");
} else {
// Is an ordinary pointer type.
fprintf(f_wrappers,"\t SWIG_MakePtr(_ptemp, _result,\"%s\");\n",
d->print_mangle());
fprintf(f_wrappers,"\t scmresult = gh_str02scm(_ptemp);\n");
}
}
}
} else {
/* Some void type. Need to return something. I'll return 1 */
fprintf(f_wrappers,"\t scmresult = gh_int2scm(1);\n");
}
// Dump the argument cleanup code
fprintf(f_wrappers,"%s\n",cleanup.get());
// Look for any remaining cleanup
if (NewObject) {
if ((tm = typemap_lookup("newfree","guile",d,iname,"_result",""))) {
fprintf(f_wrappers,"%s\n",tm);
}
}
if ((tm = typemap_lookup("ret","guile",d,name,"_result",""))) {
// Yep. Use it instead of the default
fprintf(f_wrappers,"%s\n",tm);
}
// Wrap things up (in a manner of speaking)
fprintf(f_wrappers,"\t return scmresult;\n");
fprintf(f_wrappers,"}\n");
// Now register the function
fprintf(f_init,"\t gh_new_procedure(\"%s\", _wrap_gscm_%s, %d, 0, 0);\n",
iname, wname, pcount);
// Make a documentation entry for this
if (doc_entry) {
static DocEntry *last_doc_entry = 0;
char *usage = 0;
usage_func(iname,d,l,&usage);
doc_entry->usage << usage;
if (last_doc_entry != doc_entry) {
doc_entry->cinfo << "returns " << d->print_type();
last_doc_entry = doc_entry;
}
delete usage;
}
}
// -----------------------------------------------------------------------
// GUILE::link_variable(char *name, char *iname, DataType *d)
//
// Create a link to a C variable.
// This creates a single function _wrap_gscm_var_varname().
// This function takes a single optional argument. If supplied, it means
// we are setting this variable to some value. If ommitted, it means we are
// simply evaluating this variable. Either way, we return the variables
// value.
// -----------------------------------------------------------------------
void GUILE::link_variable(char *name, char *iname, DataType *t)
{
char var_name[256];
char *tm;
char *tm2 = typemap_lookup("varout","guile",t,name,name,"scmresult");
// evaluation function names
sprintf(var_name,"_wrap_gscm_var_%s",iname);
if ((t->type != T_USER) || (t->is_pointer)) {
fprintf(f_wrappers,"SCM %s(SCM s_0) {\n", var_name);
if (!(Status & STAT_READONLY) && (t->is_pointer)) {
fprintf(f_wrappers,"\t char *_temp;\n");
fprintf(f_wrappers,"\t int _len;\n");
}
if (tm2) {
fprintf(f_wrappers,"\t char _ptemp[128];\n");
}
fprintf(f_wrappers,"\t SCM scmresult; /* fun2 */\n");
// Check for a setting of the variable value
fprintf(f_wrappers,"\t if (s_0 != GH_NOT_PASSED) {\n");
// Yup. Extract the type from s_0 and set variable value
if (Status & STAT_READONLY) {
// fprintf(f_wrappers,"\t\t gscm_error(\"Unable to set %s. Variable is read only.\", s_0);\n", iname);
} else {
if ((tm = typemap_lookup("varin","guile",t,name,"s_0",name))) {
// Yep. Use it instead of the default
fprintf(f_wrappers,"%s\n",tm);
} else {
if (!t->is_pointer) {
switch(t->type) {
// Signed Integer
case T_INT: case T_SINT:
case T_SHORT: case T_SSHORT:
case T_LONG: case T_SLONG:
case T_SCHAR:
fprintf(f_wrappers,"\t\t %s = %s gh_scm2long(s_0);\n",name, t->print_cast());
break;
// Unsigned integer
case T_UINT:
case T_USHORT:
case T_ULONG:
case T_UCHAR:
fprintf(f_wrappers,"\t\t %s = %s gh_scm2ulong(s_0);\n",name, t->print_cast());
break;
// Floating point
case T_FLOAT:
case T_DOUBLE:
fprintf(f_wrappers,"\t\t %s = %s gh_scm2double(s_0);\n",name, t->print_cast());
break;
// Character value
case T_CHAR:
fprintf(f_wrappers,"\t\t %s = gh_scm2char(s_0);\n", name);
break;
// Unknown value
default:
fprintf(stderr,"Line %d. Error, unsupported data-type.\n", line_number);
break;
}
} else {
// Have some sort of pointer type here, Process it differently
if ((t->type == T_CHAR) && (t->is_pointer == 1)) {
fprintf(f_wrappers,"\t\t _temp = gh_scm2newstr(s_0, &_len);\n");
fprintf(f_wrappers,"\t\t if (%s) { free(%s);}\n", name,name);
fprintf(f_wrappers,"\t\t %s = (char *) malloc((_len+1)*sizeof(char));\n",name);
fprintf(f_wrappers,"\t\t strncpy(%s,_temp,_len);\n",name);
fprintf(f_wrappers,"\t\t %s[_len] = 0;\n", name);
} else {
// Set the value of a pointer
fprintf(f_wrappers,"\t\t _temp = gh_scm2newstr(s_0,&_len);\n");
fprintf(f_wrappers,"\t if (SWIG_GetPtr(_temp, (void **) &%s,",name);
if (t->type == T_VOID) fprintf(f_wrappers,"(char *) 0)) {\n");
else
fprintf(f_wrappers,"\"%s\")) {\n", t->print_mangle());
// Now emit code according to the level of strictness desired
switch(TypeStrict) {
case 0: // No type checking
fprintf(f_wrappers,"\t}\n");
break;
case 1: // Warning message only
fprintf(f_wrappers,
"\t fprintf(stderr,\"Warning : type mismatch in variable %s. Expected %s, received %%s\\n\", _temp);\n", name, t->print_mangle());
fprintf(f_wrappers,"\t }\n");
break;
case 2: // Super strict mode.
// fprintf(f_wrappers,"\t\t gscm_error(\"Type error in variable %s. Expected %s.\", s_0);\n", name,t->print_mangle());
fprintf(f_wrappers,"\t}\n");
break;
default :
fprintf(stderr,"Unknown strictness level\n");
break;
}
}
}
}
}
fprintf(f_wrappers,"\t}\n");
// Now return the value of the variable (regardless of evaluating or setting)
if (tm2) {
// Yep. Use it instead of the default
fprintf(f_wrappers,"%s\n",tm);
} else {
if (!t->is_pointer) {
/* Return variable by value */
switch(t->type) {
// Signed Integer
case T_INT: case T_SINT:
case T_SHORT: case T_SSHORT:
case T_LONG: case T_SLONG:
case T_SCHAR:
fprintf(f_wrappers,"\t scmresult = gh_long2scm((long) %s);\n", name);
break;
// Unsigned integer
case T_UINT:
case T_USHORT:
case T_ULONG:
case T_UCHAR:
fprintf(f_wrappers,"\t scmresult = gh_ulong2scm((unsigned long) %s);\n",name);
break;
// Floats
case T_DOUBLE:
case T_FLOAT:
fprintf(f_wrappers,"\t scmresult = gh_double2scm((double) %s);\n", name);
break;
case T_CHAR:
fprintf(f_wrappers,"\t scmresult = gh_char2scm(%s);\n",name);
break;
default :
/* Unknown type */
break;
}
} else {
// Is a pointer return type
if ((t->type == T_CHAR) && (t->is_pointer == 1)) {
fprintf(f_wrappers,"\t scmresult = gh_str02scm(%s);\n",name);
} else {
// Is an ordinary pointer type.
fprintf(f_wrappers,"\t SWIG_MakePtr(_ptemp, %s,\"%s\");\n",name,
t->print_mangle());
fprintf(f_wrappers,"\t scmresult = gh_str02scm(_ptemp);\n");
}
}
}
fprintf(f_wrappers,"\t return scmresult;\n");
fprintf(f_wrappers,"}\n");
// Now add symbol to the Guile interpreter
fprintf(f_init,"\t gh_new_procedure(\"%s\", %s, 0, 1, 0);\n",iname, var_name);
} else {
fprintf(stderr,"%s : Line %d. ** Warning. Unable to link with type %s (ignored).\n",
input_file, line_number, t->print_type());
}
// Add a documentation entry
if (doc_entry) {
char *usage = 0;
usage_var(iname,t,&usage);
doc_entry->usage << usage;
doc_entry->cinfo << "Global : " << t->print_type() << " " << name;
delete usage;
}
}
// -----------------------------------------------------------------------
// GUILE::declare_const(char *name, char *iname, DataType *type, char *value)
//
// Makes a constant. Not sure how this is really supposed to work.
// I'm going to fake out SWIG and create a variable instead.
// ------------------------------------------------------------------------
void GUILE::declare_const(char *name, char *, DataType *type, char *value) {
int OldStatus = Status; // Save old status flags
char var_name[256];
Status = STAT_READONLY; // Enable readonly mode.
// Make a static variable;
sprintf(var_name,"_wrap_const_%s",name);
if ((type->type == T_USER) && (!type->is_pointer)) {
fprintf(stderr,"%s : Line %d. Unsupported constant value.\n", input_file, line_number);
return;
}
// Create variable and assign it a value
fprintf(f_header,"static %s %s = ", type->print_type(), var_name);
if ((type->type == T_CHAR) && (type->is_pointer <= 1)) {
fprintf(f_header,"\"%s\";\n", value);
} else {
fprintf(f_header,"%s;\n", value);
}
// Now create a variable declaration
link_variable(var_name, name, type);
Status = OldStatus;
if (doc_entry) {
char *usage = 0;
usage_const(name,type,value,&usage);
doc_entry->usage = "";
doc_entry->usage << usage;
doc_entry->cinfo = "";
doc_entry->cinfo << "Constant: " << type->print_type();
delete usage;
}
}
// ----------------------------------------------------------------------
// GUILE::usage_var(char *iname, DataType *t, char **s)
//
// Produces a usage string for a Guile variable.
// ----------------------------------------------------------------------
void GUILE::usage_var(char *iname, DataType *t, char **s) {
char temp[1024], *c;
sprintf(temp,"(%s)", iname);
c = temp + strlen(temp);
if (!((t->type != T_USER) || (t->is_pointer))) {
sprintf(c," - unsupported");
}
if (*s == 0)
*s = new char[strlen(temp)+1];
strcpy(*s,temp);
}
// ---------------------------------------------------------------------------
// GUILE::usage_func(char *iname, DataType *t, ParmList *l, char **s)
//
// Produces a usage string for a function in Guile
// ---------------------------------------------------------------------------
void GUILE::usage_func(char *iname, DataType *, ParmList *l,
char **s) {
char temp[1024];
char *c;
int i;
Parm *p;
sprintf(temp,"(%s ", iname);
c = temp + strlen(temp);
/* Now go through and print parameters */
p = l->get_first();
while (p != 0) {
/* If parameter has been named, use that. Otherwise, just print a type */
if ((p->t->type != T_VOID) || (p->t->is_pointer)) {
if (strlen(p->name) > 0) {
sprintf(c,"%s ",p->name);
c += strlen(p->name)+1;
}
else {
sprintf(c,"%s",p->t->name);
c += strlen(p->t->name);
if (p->t->is_pointer) {
for (i = 0; i < (p->t->is_pointer-p->t->implicit_ptr); i++) {
sprintf(c,"*");
c++;
}
}
}
}
p = l->get_next();
if (p != 0) {
sprintf(c," ");
c++;
}
}
sprintf(c,")");
if (*s == 0)
*s = new char[strlen(temp)+1];
strcpy(*s,temp);
}
// ----------------------------------------------------------------------
// GUILE::usage_const(char *iname, DataType *type, char *value, char **s)
//
// Produces a usage string for a Guile constant
// ----------------------------------------------------------------------
void GUILE::usage_const(char *iname, DataType *, char *value, char **s) {
char temp[1024];
sprintf(temp,"(%s %s)", iname, value);
if (*s == 0)
*s = new char[strlen(temp)+1];
strcpy(*s,temp);
}
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