swig/Source/Modules/c.cxx

1345 lines
44 KiB
C++

/* -----------------------------------------------------------------------------
* 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.
*
* c.cxx
*
* C language module for SWIG.
* ----------------------------------------------------------------------------- */
char cvsroot_c_cxx[] = "$Id: c.cxx 11186 2009-04-11 10:46:13Z maciekd $";
#include <ctype.h>
#include "swigmod.h"
int SwigType_isbuiltin(SwigType *t) {
const char* builtins[] = { "void", "short", "int", "long", "char", "float", "double", "bool",
"unsigned short", "unsigned int", "unsigned long", "unsigned char", "signed char", 0 };
int i = 0;
char *c = Char(t);
if (!t)
return 0;
while (builtins[i]) {
if (strcmp(c, builtins[i]) == 0)
return 1;
i++;
}
return 0;
}
class C:public Language {
static const char *usage;
File *f_runtime;
File *f_header;
File *f_wrappers;
File *f_init;
File *f_proxy_c;
File *f_proxy_h;
String *f_proxy_code_init;
String *f_proxy_code_body;
String *f_proxy_header;
String *empty_string;
String *int_string;
String *create_object;
String *destroy_object;
bool proxy_flag;
bool except_flag;
public:
/* -----------------------------------------------------------------------------
* C()
* ----------------------------------------------------------------------------- */
C() :
empty_string(NewString("")),
int_string(NewString("int")),
create_object(0),
destroy_object(0),
proxy_flag(true),
except_flag(true) {
}
/* ------------------------------------------------------------
* main()
* ------------------------------------------------------------ */
virtual void main(int argc, char *argv[]) {
// look for certain command line options
for (int i = 1; i < argc; i++) {
if (argv[i]) {
if (strcmp(argv[i], "-help") == 0) {
Printf(stdout, "%s\n", usage);
} else if ((strcmp(argv[i], "-proxy") == 0) || (strcmp(argv[i], "-proxy") == 0)) {
proxy_flag = true;
Swig_mark_arg(i);
} else if (strcmp(argv[i], "-noproxy") == 0) {
proxy_flag = false;
Swig_mark_arg(i);
} else if (strcmp(argv[i], "-noexcept") == 0) {
except_flag = false;
Swig_mark_arg(i);
}
}
}
if (!CPlusPlus)
except_flag = false;
// add a symbol to the parser for conditional compilation
Preprocessor_define("SWIGC 1", 0);
if (except_flag)
Preprocessor_define("SWIG_C_EXCEPT 1", 0);
if (CPlusPlus)
Preprocessor_define("SWIG_CPPMODE 1", 0);
SWIG_library_directory("c");
// add typemap definitions
SWIG_typemap_lang("c");
SWIG_config_file("c.swg");
allow_overloading();
}
/* ---------------------------------------------------------------------
* start_create_object()
* --------------------------------------------------------------------- */
void start_create_object() {
String *s = create_object = NewString("");
Printv(s, "\nSWIGINTERN SwigObj *SWIG_create_object(", except_flag ? "const char *classname" : "", ") {\n", NIL);
if (except_flag)
Printf(s, "SWIG_runtime_init();\n");
Printf(s, "SwigObj *result;\n");
Printf(s, "result = (SwigObj *) malloc(sizeof(SwigObj));\n");
Printf(s, "result->obj = 0;\n");
}
/* ---------------------------------------------------------------------
* finish_create_object()
* --------------------------------------------------------------------- */
String *finish_create_object() {
String *s = create_object;
Printf(s, "return result;\n");
Printf(s, "}\n\n");
return create_object;
}
/* ---------------------------------------------------------------------
* start_destroy_object()
* --------------------------------------------------------------------- */
void start_destroy_object() {
String *s = destroy_object = NewString("");
Printf(s, "\nSWIGINTERN void SWIG_destroy_object(SwigObj *object) {\n");
Printf(s, "if (object) {\n");
if (except_flag)
Printf(s, "if (object->typenames) {\n");
}
/* ---------------------------------------------------------------------
* finish_destroy_object()
* --------------------------------------------------------------------- */
String *finish_destroy_object() {
String *s = destroy_object;
if (except_flag)
Printf(s, "free(object->typenames);\n");
Printf(s, "free(object);\n");
Printf(s, "object = (SwigObj *) 0;\n");
if (except_flag)
Printf(s, "}\n");
Printf(s, "}\n}\n");
return destroy_object;
}
/* ---------------------------------------------------------------------
* top()
* --------------------------------------------------------------------- */
virtual int top(Node *n) {
String *module = Getattr(n, "name");
String *outfile = Getattr(n, "outfile");
// initialize I/O
f_runtime = NewFile(outfile, "w", SWIG_output_files());
if (!f_runtime) {
FileErrorDisplay(outfile);
SWIG_exit(EXIT_FAILURE);
}
f_init = NewString("");
f_header = NewString("");
f_wrappers = NewString("");
Swig_banner(f_runtime);
// generate proxy files if enabled
if (proxy_flag) {
f_proxy_code_init = NewString("");
f_proxy_code_body = NewString("");
f_proxy_header = NewString("");
// create proxy files with appropriate name
String *proxy_code_filename = NewStringf("%s%s_proxy.c", SWIG_output_directory(), Char(module));
if ((f_proxy_c = NewFile(proxy_code_filename, "w", SWIG_output_files())) == 0) {
FileErrorDisplay(proxy_code_filename);
SWIG_exit(EXIT_FAILURE);
}
String *proxy_header_filename = NewStringf("%s%s_proxy.h", SWIG_output_directory(), Char(module));
if ((f_proxy_h = NewFile(proxy_header_filename, "w", SWIG_output_files())) == 0) {
FileErrorDisplay(proxy_header_filename);
SWIG_exit(EXIT_FAILURE);
}
Swig_register_filebyname("proxy_code_init", f_proxy_code_init);
Swig_register_filebyname("proxy_code_body", f_proxy_code_body);
Swig_register_filebyname("proxy_header", f_proxy_header);
Swig_banner(f_proxy_code_init);
Swig_banner(f_proxy_header);
Printf(f_proxy_code_init, "#include \"%s\"\n\n", proxy_header_filename);
Printf(f_proxy_header, "#ifndef _%s_proxy_H_\n#define _%s_proxy_H_\n\n", Char(module), Char(module));
}
Swig_register_filebyname("header", f_header);
Swig_register_filebyname("wrapper", f_wrappers);
Swig_register_filebyname("runtime", f_runtime);
Swig_register_filebyname("init", f_init);
Printf(f_wrappers, "#ifdef __cplusplus\n");
Printf(f_wrappers, "extern \"C\" {\n");
Printf(f_wrappers, "#endif\n\n");
start_create_object();
if (except_flag)
start_destroy_object();
// emit code for children
Language::top(n);
Append(f_header, finish_create_object());
if (except_flag)
Append(f_header, finish_destroy_object());
Printf(f_wrappers, "#ifdef __cplusplus\n");
Printf(f_wrappers, "}\n");
Printf(f_wrappers, "#endif\n");
// finalize generating proxy file
if (proxy_flag) {
Printv(f_proxy_c, f_proxy_code_init, "\n", NIL);
Printv(f_proxy_c, f_proxy_code_body, "\n", NIL);
Printv(f_proxy_h, f_proxy_header, "\n#endif /* _", Char(module), "_proxy_H_ */\n", NIL);
Close(f_proxy_c);
Close(f_proxy_h);
Delete(f_proxy_code_init);
Delete(f_proxy_header);
}
// write all to the file
Wrapper_pretty_print(f_header, f_runtime);
Dump(f_wrappers, f_runtime);
Wrapper_pretty_print(f_init, f_runtime);
// cleanup
Delete(f_header);
Delete(f_wrappers);
Delete(f_init);
Close(f_runtime);
Delete(f_runtime);
return SWIG_OK;
}
/* -----------------------------------------------------------------------
* globalvariableHandler()
* ------------------------------------------------------------------------ */
virtual int globalvariableHandler(Node *n) {
if (!proxy_flag)
return SWIG_OK;
String *name = Getattr(n, "name");
SwigType *type = Getattr(n, "type");
String *type_str = Copy(SwigType_str(type, 0));
if (SwigType_isarray(type)) {
String *dims = Strchr(type_str, '[');
char *c = Char(type_str);
c[Len(type_str) - Len(dims) - 1] = '\0';
String *bare_type = NewStringf("%s", c);
//Printv(f_proxy_header, "SWIGIMPORT ", bare_type, " *", name, ";\n\n", NIL);
Printv(f_proxy_header, "SWIGIMPORT ", bare_type, " ", name, "[];\n\n", NIL);
Delete(bare_type);
}
else
Printv(f_proxy_header, "SWIGIMPORT ", type_str, " ", name, ";\n\n", NIL);
Delete(type_str);
return SWIG_OK;
}
/* -----------------------------------------------------------------------
* globalfunctionHandler()
* ------------------------------------------------------------------------ */
virtual int globalfunctionHandler(Node *n) {
SwigType *type = Getattr(n, "type");
String *vis_hint = NewString("");
String *return_type_str = SwigType_str(Getattr(n, "type"), 0);
String *name = Getattr(n, "sym:name");
ParmList *parms = Getattr(n, "parms");
String *arg_list = NewString("");
String *call = empty_string;
String *cres = empty_string;
call = Swig_cfunction_call(Getattr(n, "name"), parms);
cres = Swig_cresult(type, "result", call);
Setattr(n, "wrap:action", cres);
if (!SwigType_ispointer(type) && !SwigType_isreference(type))
Setattr(n, "c:retval", "1");
functionWrapper(n);
// add visibility hint for the compiler (do not override this symbol)
Printv(vis_hint, "SWIGPROTECT(", return_type_str, " ", name, "(", ParmList_str(parms), ");)\n\n", NIL);
Printv(f_header, vis_hint, NIL);
Delete(cres);
Delete(call);
Delete(arg_list);
Delete(vis_hint);
return SWIG_OK;
}
/* ----------------------------------------------------------------------
* prepend_feature()
* ---------------------------------------------------------------------- */
String* prepend_feature(Node *n) {
String *prepend_str = Getattr(n, "feature:prepend");
if (prepend_str) {
char *t = Char(prepend_str);
if (*t == '{') {
Delitem(prepend_str, 0);
Delitem(prepend_str, DOH_END);
}
}
return (prepend_str ? prepend_str : empty_string);
}
/* ----------------------------------------------------------------------
* append_feature()
* ---------------------------------------------------------------------- */
String* append_feature(Node *n) {
String *append_str = Getattr(n, "feature:append");
if (append_str) {
char *t = Char(append_str);
if (*t == '{') {
Delitem(append_str, 0);
Delitem(append_str, DOH_END);
}
}
return (append_str ? append_str : empty_string);
}
/* ----------------------------------------------------------------------
* get_mangled_type()
* ---------------------------------------------------------------------- */
String *get_mangled_type(SwigType *type_arg) {
static String *result = 0;
SwigType *prefix = 0;
if (result)
Delete(result);
result = NewString("");
SwigType *type = Copy(type_arg);
if (SwigType_ismemberpointer(type)) {
SwigType_del_memberpointer(type);
SwigType_add_pointer(type);
}
if (SwigType_ispointer(type)) {
SwigType_del_pointer(type);
if (SwigType_isfunction(type)) {
Printf(result, "f");
goto ready;
}
Delete(type);
type = Copy(type_arg);
}
prefix = SwigType_prefix(type);
Replaceall(prefix, ".", "");
Replaceall(prefix, "const", "c");
Replaceall(prefix, "volatile", "v");
Replaceall(prefix, "a(", "a");
Replaceall(prefix, "m(", "m");
Replaceall(prefix, "q(", "");
Replaceall(prefix, ")", "");
Replaceall(prefix, " ", "");
Printf(result, "%s", prefix);
type = SwigType_base(type);
if (SwigType_isbuiltin(type))
Printf(result, "%c", *Char(SwigType_base(type)));
else if (SwigType_isenum(type))
Printf(result, "e%s", Swig_scopename_last(type));
else
Printf(result, "%s", Char(SwigType_base(type)));
ready:
if (prefix)
Delete(prefix);
if (type)
Delete(type);
return result;
}
/* ----------------------------------------------------------------------
* functionWrapper()
* ---------------------------------------------------------------------- */
virtual int functionWrapper(Node *n) {
String *name = Getattr(n, "sym:name");
String *storage = Getattr(n, "storage");
SwigType *type = Getattr(n, "type");
SwigType *otype = Copy(type);
SwigType *return_type = NewString("");
String *wname;
String *arg_names = NewString("");
ParmList *parms = Getattr(n, "parms");
Parm *p;
String *tm;
String *proto = NewString("");
String *over_suffix = NewString("");
SwigType *return_var_type = empty_string;
int gencomma;
bool is_void_return = (SwigType_type(type) == T_VOID);
// create new function wrapper object
Wrapper *wrapper = NewWrapper();
if (!CPlusPlus) {
// this is C function, we don't apply typemaps to it
// create new wrapper name
wname = Swig_name_wrapper(name);
Setattr(n, "wrap:name", wname);
// create function call
arg_names = Swig_cfunction_call(empty_string, parms);
if (arg_names) {
Delitem(arg_names, 0);
Delitem(arg_names, DOH_END);
}
return_type = SwigType_str(type, 0);
// emit wrapper prototype and code
gencomma = 0;
for (p = parms; p; p = nextSibling(p)) {
Printv(proto, gencomma ? ", " : "", SwigType_str(Getattr(p, "type"), 0), " ", Getattr(p, "lname"), NIL);
gencomma = 1;
}
Printv(wrapper->def, return_type, " ", wname, "(", proto, ") {\n", NIL);
// attach 'check' typemaps
Swig_typemap_attach_parms("check", parms, wrapper);
// insert constraint checking
for (p = parms; p; ) {
if ((tm = Getattr(p, "tmap:check"))) {
Replaceall(tm, "$target", Getattr(p, "lname"));
Replaceall(tm, "$name", name);
Printv(wrapper->code, tm, "\n", NIL);
p = Getattr(p, "tmap:check:next");
}
else {
p = nextSibling(p);
}
}
Append(wrapper->code, prepend_feature(n));
if (!is_void_return) {
Printv(wrapper->code, return_type, " result;\n", NIL);
Printf(wrapper->code, "result = ");
}
Printv(wrapper->code, name, "(", arg_names, ");\n", NIL);
Append(wrapper->code, append_feature(n));
if (!is_void_return)
Printf(wrapper->code, "return result;\n");
Printf(wrapper->code, "}");
}
else {
// C++ function wrapper
// mark the first parameter as object-struct
if (storage && Cmp(storage, "static") != 0) {
if ((Cmp(Getattr(n, "ismember"), "1") == 0) &&
(Cmp(nodeType(n), "constructor") != 0)) {
Setattr(parms, "c:objstruct", "1");
if (!Getattr(parms, "lname"))
Setattr(parms, "lname", "arg1");
SwigType *stype = Copy(Getattr(Swig_methodclass(n), "sym:name"));
SwigType_add_pointer(stype);
Setattr(parms, "c:stype", stype);
}
}
// mangle name if function is overloaded
if (Getattr(n, "sym:overloaded")) {
if (!Getattr(n, "copy_constructor")) {
for (p = parms; p; p = nextSibling(p)) {
if (Getattr(p, "c:objstruct"))
continue;
String *mangled = get_mangled_type(Getattr(p, "type"));
Printv(over_suffix, "_", mangled, NIL);
}
Append(name, over_suffix);
}
}
// create new wrapper name
wname = Swig_name_wrapper(name);
Setattr(n, "wrap:name", wname);
// set the return type
if (Cmp(Getattr(n, "c:objstruct"), "1") == 0) {
Printv(return_type, SwigType_str(type, 0), NIL);
}
else if ((tm = Swig_typemap_lookup("couttype", n, "", 0))) {
String *ctypeout = Getattr(n, "tmap:couttype:out");
if (ctypeout)
tm = ctypeout;
Printf(return_type, "%s", tm);
}
else {
Swig_warning(WARN_C_TYPEMAP_CTYPE_UNDEF, input_file, line_number, "No couttype typemap defined for %s\n", SwigType_str(type, 0));
}
// add variable for holding result of original function 'cppresult'
// WARNING: Here we possibly make change to 'type' attribute of the node.
// This is done before the standard typemaps are attached, so they will
// use the modified type.
// In order to refer to the original type use 'otype' variable.
bool return_object = false;
if (!is_void_return && (Cmp(Getattr(n, "c:objstruct"), "1") != 0)) {
SwigType *tdtype = SwigType_typedef_resolve_all(type);
if (tdtype)
type = tdtype;
if (SwigType_ismemberpointer(type)) {
Wrapper_add_local(wrapper, "cppresult", SwigType_str(type, "cppresult"));
}
else if (SwigType_isenum(type)) {
Wrapper_add_localv(wrapper, "cppresult", "int", "cppresult", NIL);
}
else {
if (SwigType_isbuiltin(SwigType_base(type))) {
// type is built-in (int, char, double, etc.)
//Printf(stdout, "BUILTIN %s %s\n", name, SwigType_str(type, 0));
if (SwigType_isconst(type))
SwigType_del_qualifier(type);
if (SwigType_isreference(type)) {
if (SwigType_isconst(SwigType_del_reference(type))) {
return_var_type = SwigType_base(type);
SwigType_add_qualifier(return_var_type, "const");
SwigType_add_pointer(return_var_type);
}
else {
return_var_type = SwigType_base(type);
SwigType_add_pointer(return_var_type);
}
if (SwigType_ispointer(type)) {
SwigType_add_pointer(return_var_type);
}
SwigType_add_reference(type);
}
else if (SwigType_isarray(type)) {
return_var_type = SwigType_base(type);
SwigType *atype = Copy(type);
do {
SwigType_del_array(atype);
SwigType_add_pointer(return_var_type);
} while (SwigType_isarray(atype));
if (SwigType_ispointer(atype))
SwigType_add_pointer(return_var_type);
Delete(atype);
}
else {
return_var_type = type;
}
}
else {
// type is class
//Printf(stdout, "CLASS %s %s\n", name, SwigType_str(type, 0));
if (SwigType_ispointer(type)) {
return_var_type = type;
}
else if (SwigType_isreference(type)) {
return_var_type = type;
SwigType_del_reference(return_var_type);
SwigType_add_pointer(return_var_type);
}
else if (SwigType_isarray(type)) {
return_var_type = SwigType_base(type);
SwigType *atype = Copy(type);
do {
SwigType_del_array(atype);
SwigType_add_pointer(return_var_type);
} while (SwigType_isarray(atype));
Delete(atype);
//if (Cmp(Getattr(n, "c:retval"), "1"))
SwigType_add_pointer(return_var_type);
}
else {
SwigType_add_pointer(type);
return_var_type = type;
}
return_object = true;
}
// hack for handling const 'cppresult' return values,
// including cases like: A const *&
SwigType *temp1 = Copy(otype), *temp2 = 0;
if (SwigType_isreference(temp1)) {
SwigType_del_reference(temp1);
temp2 = Copy(temp1);
if (SwigType_ispointer(temp2))
SwigType_del_pointer(temp2);
}
String *var_name = SwigType_str(return_var_type, 0);
if (SwigType_isconst(otype) || SwigType_isconst(temp1) || SwigType_isconst(temp2))
Replaceall(var_name, "const", "");
Wrapper_add_localv(wrapper, "cppresult", var_name, "cppresult", NIL);
Delete(var_name);
Delete(temp1);
if (temp2)
Delete(temp2);
}
}
// make sure lnames are set
int index = 1;
for (p = parms; p; p = nextSibling(p)) {
String *lname = Getattr(p, "lname");
if (!lname) {
lname = NewStringf("arg%d", index);
Setattr(p, "lname", lname);
}
index++;
}
// create wrapper function prototype
Printv(wrapper->def, "SWIGEXPORTC ", return_type, " ", wname, "(", NIL);
// attach the standard typemaps
emit_attach_parmmaps(parms, wrapper);
Setattr(n, "wrap:parms", parms);
// attach 'ctype' typemaps
Swig_typemap_attach_parms("ctype", parms, wrapper);
// prepare function definition
gencomma = 0;
for (p = parms; p; ) {
//Printf(stdout, "TYPE: %s ", SwigType_str(Getattr(p, "type"), 0));
//Swig_print_node(p);
while (checkAttribute(p, "tmap:in:numinputs", "0")) {
p = Getattr(p, "tmap:in:next");
}
SwigType *type = Getattr(p, "type");
if (SwigType_type(type) == T_VOID) {
p = nextSibling(p);
continue;
}
String *lname = Getattr(p, "lname");
String *c_parm_type = NewString("");
String *proxy_parm_type = NewString("");
String *arg_name = NewString("");
SwigType *tdtype = SwigType_typedef_resolve_all(type);
if (tdtype)
type = tdtype;
Printf(arg_name, "c%s", lname);
// set the appropriate type for parameter
if ((tm = Getattr(p, "tmap:ctype"))) {
Printv(c_parm_type, tm, NIL);
}
else {
Swig_warning(WARN_C_TYPEMAP_CTYPE_UNDEF, input_file, line_number, "No ctype typemap defined for %s\n", SwigType_str(type, 0));
}
// hack for handling arrays of objects, as typemap SWIGOBJ *[ANY]
// precedes int *[ANY] for int arrays
if (!SwigType_isbuiltin(SwigType_base(type)))
Replaceall(c_parm_type, SwigType_base(type), SwigType_isarray(type) ? "SwigObj *" : "SwigObj");
// use proxy-type for parameter if supplied
String* stype = Getattr(p, "c:stype");
if (stype) {
Printv(proxy_parm_type, SwigType_str(stype, 0), NIL);
}
else {
Printv(proxy_parm_type, c_parm_type, NIL);
}
Printv(arg_names, gencomma ? ", " : "", arg_name, NIL);
Printv(wrapper->def, gencomma ? ", " : "", c_parm_type, " ", arg_name, NIL);
Printv(proto, gencomma ? ", " : "", proxy_parm_type, " ", arg_name, NIL);
gencomma = 1;
// apply typemaps for input parameter
if (Cmp(nodeType(n), "destructor") == 0) {
p = Getattr(p, "tmap:in:next");
}
else if ((tm = Getattr(p, "tmap:in"))) {
Replaceall(tm, "$input", arg_name);
Setattr(p, "emit:input", arg_name);
Printf(wrapper->code, "%s\n", tm);
p = Getattr(p, "tmap:in:next");
}
else {
Swig_warning(WARN_TYPEMAP_IN_UNDEF, input_file, line_number, "Unable to use type %s as a function argument.\n", SwigType_str(type, 0));
p = nextSibling(p);
}
Delete(arg_name);
Delete(proxy_parm_type);
Delete(c_parm_type);
}
Printf(wrapper->def, ") {");
if (Cmp(nodeType(n), "destructor") != 0) {
// emit variables for holding parameters
emit_parameter_variables(parms, wrapper);
// emit variable for holding function return value
emit_return_variable(n, return_type, wrapper);
}
// insert constraint checking
for (p = parms; p; ) {
if ((tm = Getattr(p, "tmap:check"))) {
Replaceall(tm, "$target", Getattr(p, "lname"));
Replaceall(tm, "$name", name);
Printv(wrapper->code, tm, "\n", NIL);
p = Getattr(p, "tmap:check:next");
}
else {
p = nextSibling(p);
}
}
// create action code
String *action = Getattr(n, "wrap:action");
if (!action)
action = NewString("");
// handle special cases of cpp return result
if (Cmp(nodeType(n), "constructor") != 0) {
if (SwigType_isenum(type)) {
// returning enum value
Replace(action, "result =", "cppresult = (int)", DOH_REPLACE_FIRST);
}
else if (return_object && Getattr(n, "c:retval") && !SwigType_isarray(type)
&& Cmp(Getattr(n, "storage"), "static") != 0) {
// returning object by value
String *str = SwigType_str(SwigType_add_reference(SwigType_base(type)), "_result_ref");
String *lstr = SwigType_lstr(type, 0);
if (Cmp(Getattr(n, "kind"), "variable") == 0) {
Delete(action);
action = NewStringf("const %s = %s;\n", str, Swig_cmemberget_call(Getattr(n, "name"), type, 0, 0));
}
else {
String *call_str = NewStringf("const %s = %s", str,
SwigType_ispointer(SwigType_typedef_resolve_all(otype)) ? "*" : "");
Replace(action, "result =", call_str, DOH_REPLACE_FIRST);
Delete(call_str);
}
Printf(action, "\ncppresult = (%s) &_result_ref;\n", lstr);
Delete(str);
Delete(lstr);
}
else
Replace(action, "result =", "cppresult = ", DOH_REPLACE_FIRST);
}
// prepare action code to use, e.g. insert try-catch blocks
action = emit_action(n);
// emit output typemap if needed
if (!is_void_return && (Cmp(Getattr(n, "c:objstruct"), "1") != 0)) {
if ((tm = Swig_typemap_lookup_out("out", n, "cppresult", wrapper, action))) {
Replaceall(tm, "$result", "result");
Printf(wrapper->code, "%s", tm);
if (Len(tm))
Printf(wrapper->code, "\n");
}
else {
Swig_warning(WARN_TYPEMAP_OUT_UNDEF, input_file, line_number, "Unable to use return type %s in function %s.\n", SwigType_str(type, 0), Getattr(n, "name"));
}
}
else {
Append(wrapper->code, action);
}
String *except = Getattr(n, "feature:except");
if (Getattr(n, "throws") || except) {
if (!except || (Cmp(except, "0") != 0))
Printf(wrapper->code, "if (SWIG_exc.handled) {\nSWIG_rt_stack_pop();\nlongjmp(SWIG_rt_env, 1);\n}\n");
}
// insert cleanup code
for (p = parms; p; ) {
if ((tm = Getattr(p, "tmap:freearg"))) {
if (tm && (Len(tm) != 0)) {
String *input = NewStringf("c%s", Getattr(p, "lname"));
Replaceall(tm, "$source", Getattr(p, "lname"));
Replaceall(tm, "$input", input);
Delete(input);
Printv(wrapper->code, tm, "\n", NIL);
}
p = Getattr(p, "tmap:freearg:next");
}
else {
p = nextSibling(p);
}
}
if (!is_void_return)
Append(wrapper->code, "return result;\n");
Append(wrapper->code, "}\n");
}
// take care of proxy function
if (proxy_flag) {
// use proxy-type for return type if supplied
SwigType *proxy_type = Getattr(n, "c:stype");
if (proxy_type) {
return_type = SwigType_str(proxy_type, 0);
}
// emit proxy functions prototypes
Printv(f_proxy_code_init, return_type, " ", wname, "(", proto, ");\n", NIL);
Printv(f_proxy_code_body, return_type, " ", name, "(", proto, ") {\n", NIL);
// call to the wrapper function
Printv(f_proxy_code_body, " return ", wname, "(", arg_names, ");\n}\n", NIL);
// add function declaration to the proxy header file
Printv(f_proxy_header, return_type, " ", name, "(", proto, ");\n");
}
Wrapper_print(wrapper, f_wrappers);
// cleanup
Delete(over_suffix);
Delete(proto);
Delete(arg_names);
Delete(wname);
Delete(return_type);
Delete(otype);
DelWrapper(wrapper);
return SWIG_OK;
}
/* ---------------------------------------------------------------------
* copy_node()
* --------------------------------------------------------------------- */
Node *copy_node(Node *node) {
Node *new_node = NewHash();
Setattr(new_node, "name", Copy(Getattr(node, "name")));
Setattr(new_node, "ismember", Copy(Getattr(node, "ismember")));
Setattr(new_node, "view", Copy(Getattr(node, "view")));
Setattr(new_node, "kind", Copy(Getattr(node, "kind")));
Setattr(new_node, "access", Copy(Getattr(node, "access")));
Setattr(new_node, "parms", Copy(Getattr(node, "parms")));
Setattr(new_node, "type", Copy(Getattr(node, "type")));
Setattr(new_node, "decl", Copy(Getattr(node, "decl")));
return new_node;
}
/* ---------------------------------------------------------------------
* is_in()
*
* tests if given name already exists in one of child nodes of n
* --------------------------------------------------------------------- */
bool is_in(String *name, Node *n) {
Hash *h;
for (h = firstChild(n); h; h = nextSibling(h)) {
if (Cmp(name, Getattr(h, "name")) == 0)
return true;
}
return false;
}
/* ---------------------------------------------------------------------
* emit_c_struct_def()
* --------------------------------------------------------------------- */
void emit_c_struct_def(Node *node) {
for ( ; node; node = nextSibling(node)) {
String* kind = Getattr(node, "kind");
if ((Cmp(kind, "variable") == 0) || (Cmp(kind, "function") == 0)) {
String* type = NewString("");
Printv(type, Getattr(node, "decl"), Getattr(node, "type"), NIL);
Printv(f_proxy_header, " ", SwigType_str(type, 0), " ", Getattr(node, "name"), ";\n", NIL);
Delete(type);
}
if (Cmp(nodeType(node), "extend") == 0)
emit_c_struct_def(firstChild(node));
}
}
/* ---------------------------------------------------------------------
* classHandler()
* --------------------------------------------------------------------- */
virtual int classHandler(Node *n) {
String *name = NewString("");
String *sobj = NewString("");
List *baselist = Getattr(n, "bases");
String *prefix = Swig_scopename_prefix(Getattr(n, "classtype"));
if (prefix)
Printf(name, "%s_", Swig_name_mangle(prefix));
Append(name, Getattr(n, "sym:name"));
Setattr(n, "sym:name", name);
if (CPlusPlus) {
// inheritance support: attach all members from base classes to this class
if (baselist) {
Iterator i;
for (i = First(baselist); i.item; i = Next(i)) {
// look for member variables and functions
Node *node;
for (node = firstChild(i.item); node; node = nextSibling(node)) {
if ((Cmp(Getattr(node, "kind"), "variable") == 0)
|| (Cmp(Getattr(node, "kind"), "function") == 0)) {
if ((Cmp(Getattr(node, "access"), "public") == 0)
&& (Cmp(Getattr(node, "storage"), "static") != 0)) {
if (!is_in(Getattr(node, "name"), n)) {
Node* new_node = copy_node(node);
Setattr(new_node, "sym:name", Getattr(new_node, "name"));
Setattr(new_node, "sym:symtab", Getattr(n, "symtab"));
set_nodeType(new_node, "cdecl");
appendChild(n, new_node);
}
}
}
}
}
}
if (except_flag)
Printv(f_header, "const char* Swig_typename_", name, " = \"", name, "\";\n\n", NIL);
// declare type for specific class in the proxy header
if (proxy_flag)
Printv(f_proxy_header, "\ntypedef SwigObj ", name, ";\n\n", NIL);
Delete(sobj);
Delete(name);
return Language::classHandler(n);
}
else if (Cmp(Getattr(n, "kind"), "struct") == 0) {
// this is C struct, just declare it in proxy
if (proxy_flag) {
Printv(f_proxy_header, "struct ", name, " {\n", NIL);
Node *node = firstChild(n);
emit_c_struct_def(node);
Append(f_proxy_header, "};\n\n");
}
Delete(sobj);
Delete(name);
}
return SWIG_OK;
}
/* ---------------------------------------------------------------------
* staticmemberfunctionHandler()
* --------------------------------------------------------------------- */
virtual int staticmemberfunctionHandler(Node *n) {
SwigType *type = Getattr(n, "type");
SwigType *tdtype;
tdtype = SwigType_typedef_resolve_all(type);
if (tdtype)
type = tdtype;
if (type) {
if (!SwigType_ispointer(type) && !SwigType_isreference(type))
Setattr(n, "c:retval", "1");
}
return Language::staticmemberfunctionHandler(n);
}
/* ---------------------------------------------------------------------
* memberfunctionHandler()
* --------------------------------------------------------------------- */
virtual int memberfunctionHandler(Node *n) {
SwigType *type = Getattr(n, "type");
SwigType *tdtype;
tdtype = SwigType_typedef_resolve_all(type);
if (tdtype)
type = tdtype;
if (type) {
if (!SwigType_ispointer(type) && !SwigType_isreference(type))
Setattr(n, "c:retval", "1");
}
return Language::memberfunctionHandler(n);
}
/* ---------------------------------------------------------------------
* staticmembervariableHandler()
* --------------------------------------------------------------------- */
virtual int staticmembervariableHandler(Node *n) {
SwigType *type = Getattr(n, "type");
SwigType *tdtype = SwigType_typedef_resolve_all(type);
if (tdtype) {
type = tdtype;
Setattr(n, "type", type);
}
SwigType *btype = SwigType_base(type);
if (SwigType_isarray(type) && !SwigType_isbuiltin(btype)) {
// this hack applies to member objects array (not ptrs.)
SwigType_add_pointer(btype);
SwigType_add_array(btype, NewStringf("%s", SwigType_array_getdim(type, 0)));
Setattr(n, "type", btype);
}
if (type) {
if (!SwigType_ispointer(type) && !SwigType_isreference(type))
Setattr(n, "c:retval", "1");
}
Delete(type);
Delete(btype);
return Language::staticmembervariableHandler(n);
}
/* ---------------------------------------------------------------------
* membervariableHandler()
* --------------------------------------------------------------------- */
virtual int membervariableHandler(Node *n) {
SwigType *type = Getattr(n, "type");
SwigType *tdtype = SwigType_typedef_resolve_all(type);
if (tdtype) {
type = tdtype;
Setattr(n, "type", type);
}
SwigType *btype = SwigType_base(type);
if (SwigType_isarray(type) && !SwigType_isbuiltin(btype)) {
// this hack applies to member objects array (not ptrs.)
SwigType_add_pointer(btype);
SwigType_add_array(btype, NewStringf("%s", SwigType_array_getdim(type, 0)));
Setattr(n, "type", btype);
}
if (type) {
if (!SwigType_ispointer(type) && !SwigType_isreference(type))
Setattr(n, "c:retval", "1");
}
Delete(type);
Delete(btype);
return Language::membervariableHandler(n);
}
/* ---------------------------------------------------------------------
* add_to_create_object()
* --------------------------------------------------------------------- */
void add_to_create_object(Node *n, String *classname, String *newclassname) {
String *s = create_object;
Printv(s, "if (strcmp(classname, \"", classname, "\") == 0) {\n", NIL);
// store the name of each class in the hierarchy
List *baselist = Getattr(Swig_methodclass(n), "bases");
Printf(s, "result->typenames = (const char **) malloc(%d*sizeof(const char*));\n", Len(baselist) + 2);
Printv(s, "result->typenames[0] = Swig_typename_", newclassname, ";\n", NIL);
int i = 1;
if (baselist) {
Iterator it;
for (it = First(baselist); it.item; it = Next(it)) {
String *kname = Getattr(it.item, "sym:name");
if (kname)
Printf(s, "result->typenames[%d] = Swig_typename_%s;\n", i++, kname);
}
}
Printf(s, "result->typenames[%d] = 0;\n", i);
Printf(s, "}\n");
}
void add_to_destroy_object(Node *n, String *classname) {
String *s = destroy_object;
String *access = Getattr(n, "access");
if (access && Cmp(access, "private") != 0) {
Printv(s, "if (strcmp(object->typenames[0], \"", classname, "\") == 0) {\n", NIL);
Printv(s, "if (object->obj)\ndelete (", classname, " *) (object->obj);\n", NIL);
Printf(s, "}\n");
}
}
/* ---------------------------------------------------------------------
* constructorHandler()
* --------------------------------------------------------------------- */
virtual int constructorHandler(Node *n) {
String *access = Getattr(n, "access");
if (Cmp(access, "private") == 0)
return SWIG_NOWRAP;
if (Getattr(n, "copy_constructor"))
return copyconstructorHandler(n);
Node *klass = Swig_methodclass(n);
String *classname = Getattr(klass, "classtype");
String *newclassname = Getattr(klass, "sym:name");
String *sobj_name = NewString("");
String *ctype;
String *stype;
String *code = NewString("");
String *constr_name = NewString("");
String *arg_lnames = NewString("");
ParmList *parms = Getattr(n, "parms");
// prepare argument names
Append(arg_lnames, Swig_cfunction_call(empty_string, parms));
// set the function return type to the pointer to struct
Printf(sobj_name, "SwigObj");
ctype = Copy(sobj_name);
SwigType_add_pointer(ctype);
Setattr(n, "type", ctype);
Setattr(n, "c:objstruct", "1");
stype = Copy(newclassname);
SwigType_add_pointer(stype);
Setattr(n, "c:stype", stype);
// modify the constructor name
constr_name = Swig_name_construct(newclassname);
Setattr(n, "name", constr_name);
Setattr(n, "sym:name", constr_name);
// generate action code
if (except_flag) {
add_to_create_object(n, classname, newclassname);
Printv(code, "result = SWIG_create_object(\"", classname, "\");\n", NIL);
Printf(code, "SWIG_add_registry_entry(result);\n");
}
else {
Printf(code, "result = SWIG_create_object();\n");
}
Printv(code, "result->obj = (void*) new ", classname, arg_lnames, ";\n", NIL);
Setattr(n, "wrap:action", code);
functionWrapper(n);
Delete(arg_lnames);
Delete(constr_name);
Delete(code);
Delete(stype);
Delete(ctype);
Delete(sobj_name);
return SWIG_OK;
}
/* ---------------------------------------------------------------------
* copyconstructorHandler()
* --------------------------------------------------------------------- */
virtual int copyconstructorHandler(Node *n) {
Node *klass = Swig_methodclass(n);
String *classname = Getattr(klass, "classtype");
String *newclassname = Getattr(klass, "sym:name");
String *sobj_name = NewString("");
String *ctype;
String *stype;
String *code = NewString("");
String *constr_name = NewString("");
ParmList *parms = Getattr(n, "parms");
Setattr(parms, "lname", "arg1");
// set the function return type to the pointer to struct
Printf(sobj_name, "SwigObj");
ctype = Copy(sobj_name);
SwigType_add_pointer(ctype);
Setattr(n, "type", ctype);
Setattr(n, "c:objstruct", "1");
stype = Copy(newclassname);
SwigType_add_pointer(stype);
Setattr(n, "c:stype", stype);
// modify the constructor name
constr_name = Swig_name_copyconstructor(newclassname);
Setattr(n, "name", constr_name);
Setattr(n, "sym:name", constr_name);
// generate action code
if (except_flag) {
add_to_create_object(n, classname, newclassname);
Printv(code, "result = SWIG_create_object(\"", classname, "\");\n", NIL);
Printf(code, "SWIG_add_registry_entry(result);\n");
}
else {
Printf(code, "result = SWIG_create_object();\n");
}
Printv(code, "result->obj = (void*) new ", classname, "((", classname, " const &)*arg1);\n", NIL);
Setattr(n, "wrap:action", code);
functionWrapper(n);
Delete(constr_name);
Delete(code);
Delete(stype);
Delete(ctype);
Delete(sobj_name);
return SWIG_OK;
}
/* ---------------------------------------------------------------------
* destructorHandler()
* --------------------------------------------------------------------- */
virtual int destructorHandler(Node *n) {
Node *klass = Swig_methodclass(n);
String *classname = Getattr(klass, "classtype");
String *newclassname = Getattr(klass, "sym:name");
String *sobj_name = NewString("");
String *ctype;
String *stype;
String *code = NewString("");
String *destr_name = NewString("");
Parm *p;
// create first argument
Printf(sobj_name, "SwigObj");
ctype = Copy(sobj_name);
SwigType_add_pointer(ctype);
p = NewParm(ctype, "self");
Setattr(p, "lname", "arg1");
stype = Copy(newclassname);
SwigType_add_pointer(stype);
Setattr(p, "c:stype", stype);
Setattr(p, "c:objstruct", "1");
Setattr(n, "parms", p);
Setattr(n, "type", "void");
// modify the destructor name
destr_name = Swig_name_destroy(newclassname);
Setattr(n, "sym:name", destr_name);
// create action code
if (except_flag) {
add_to_destroy_object(n, classname);
Printf(code, "SWIG_remove_registry_entry(carg1);\n");
Printf(code, "SWIG_destroy_object(carg1);");
}
else {
Printv(code, "if (carg1->obj)\ndelete (", classname, " *) (carg1->obj);\n", NIL);
}
Setattr(n, "wrap:action", code);
functionWrapper(n);
Delete(p);
Delete(destr_name);
Delete(code);
Delete(stype);
Delete(ctype);
Delete(sobj_name);
return SWIG_OK;
}
/* ---------------------------------------------------------------------
* enumDeclaration()
* --------------------------------------------------------------------- */
virtual int enumDeclaration(Node *n) {
return Language::enumDeclaration(n);
}
/* ---------------------------------------------------------------------
* enumvalueDeclaration()
* --------------------------------------------------------------------- */
virtual int enumvalueDeclaration(Node *n) {
if (Cmp(Getattr(n, "ismember"), "1") == 0 && Cmp(Getattr(n, "access"), "public") != 0)
return SWIG_NOWRAP;
Swig_require("enumvalueDeclaration", n, "*value", "?enumvalueex", "?enumvalue", NIL);
String *name = Getattr(n, "value");
String *value = Getattr(n, "enumvalueex");
value = value ? value : Getattr(n, "enumvalue");
Printv(f_proxy_header, "#define ", Swig_name_mangle(name), " ", value, "\n", NIL);
Swig_restore(n);
return SWIG_OK;
}
/* ---------------------------------------------------------------------
* constantWrapper()
* --------------------------------------------------------------------- */
virtual int constantWrapper(Node *n) {
if (!proxy_flag)
return SWIG_OK;
String *name = Getattr(n, "sym:name");
String *value = Getattr(n, "value");
Printv(f_proxy_header, "#define ", name, " ", value, "\n", NIL);
return SWIG_OK;
}
}; /* class C */
/* -----------------------------------------------------------------------------
* swig_c() - Instantiate module
* ----------------------------------------------------------------------------- */
static Language *new_swig_c() {
return new C();
}
extern "C" Language *swig_c(void) {
return new_swig_c();
}
/* -----------------------------------------------------------------------------
* Static member variables
* ----------------------------------------------------------------------------- */
const char *C::usage = (char *) "\
C Options (available with -c)\n\
-noproxy - do not generate proxy interface\n\
-noexcept - do not generate exception handling code\n\
\n";