swig/Source/Modules/javascript.cxx
Oliver Buchtala 050219d998 Merge branch 'devel' of https://github.com/Neha03/gsoc2012-javascript into devel
Conflicts:
	.project
	COPYRIGHT
	Doc/Manual/style.css
	Examples/Makefile.in
	Examples/test-suite/common.mk
	Lib/typemaps/strings.swg
	Makefile.in
	Source/DOH/fio.c
	Source/Makefile.am
	Source/Modules/emit.cxx
	Source/Modules/javascript.cxx
	configure.in

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/branches/oliverb-javascript-v8@13764 626c5289-ae23-0410-ae9c-e8d60b6d4f22
2012-09-08 00:56:48 +00:00

1587 lines
43 KiB
C++

#include "swigmod.h"
#include <cparse.h>
#include <parser.h>
#include <ctype.h>
/**
* A class that wraps a code snippet used as template for code generation.
*/
class Template {
public:
Template(const String *code);
Template(const String *code, const String *templateName, bool debug = false);
~Template();
String *str();
Template & replace(const String *pattern, const String *repl);
private:
String *code;
String *templateName;
bool debug;
};
class JSEmitter {
public:
enum JSEmitterType {
JavascriptCore,
V8,
QtScript
};
JSEmitter();
virtual ~ JSEmitter();
/**
* Opens output files and temporary output DOHs.
*/
virtual int initialize(Node *n) = 0;
/**
* Writes all collected code into the output file(s).
*/
virtual int dump(Node *n) = 0;
/**
* Cleans up all open output DOHs.
*/
virtual int close() = 0;
/**
* Switches the context for code generation.
*
* Classes, global variables and global functions may need to
* be registered in certain static tables.
* This method should be used to switch output DOHs correspondingly.
*/
virtual int switchNamespace(Node *) {
return SWIG_OK;
};
/**
* Invoked at the beginning of the classHandler.
*/
virtual int enterClass(Node *) {
return SWIG_OK;
};
/**
* Invoked at the end of the classHandler.
*/
virtual int exitClass(Node *) {
return SWIG_OK;
};
/**
* Invoked at the beginning of the variableHandler.
*/
virtual int enterVariable(Node *) {
return SWIG_OK;
};
/**
* Invoked at the end of the variableHandler.
*/
virtual int exitVariable(Node *) {
return SWIG_OK;
};
/**
* Invoked at the beginning of the functionHandler.
*/
virtual int enterFunction(Node *) {
return SWIG_OK;
};
/**
* Invoked at the end of the functionHandler.
*/
virtual int exitFunction(Node *) {
return SWIG_OK;
};
/**
* Invoked by functionWrapper callback after call to Language::functionWrapper.
*/
virtual int emitWrapperFunction(Node *n);
/**
* Invoked from constantWrapper after call to Language::constantWrapper.
**/
virtual int emitConstant(Node *n) = 0;
/**
* Registers a given code snippet for a given key name.
*
* This method is called by the fragmentDirective handler
* of the JAVASCRIPT language module.
**/
int registerTemplate(const String *name, const String *code);
/**
* Retrieve the code template registered for a given name.
*/
Template getTemplate(const String *name);
void enableDebug();
void setStaticFlag(bool is_static = false);
protected:
virtual int emitCtor(Node *n) = 0;
virtual int emitDtor(Node *n) = 0;
virtual int emitFunction(Node *n, bool is_member) = 0;
virtual int emitGetter(Node *n, bool is_member) = 0;
virtual int emitSetter(Node *n, bool is_member) = 0;
bool isSetterMethod(Node *n);
Node *getBaseClass(Node *n);
const String *typemapLookup(Node *n, const_String_or_char_ptr tmap_method, SwigType *type, int warning, Node *typemap_attributes = 0);
void enableDebugTemplates();
protected:
// empty string used at different places in the code
String *empty_string;
Hash *templates;
Wrapper *current_wrapper;
bool is_static;
bool debug;
};
class JSCEmitter:public JSEmitter {
private:
enum MarshallingMode {
Setter,
Getter,
Ctor,
Function
};
public:
JSCEmitter();
virtual ~ JSCEmitter();
virtual int initialize(Node *n);
virtual int dump(Node *n);
virtual int close();
protected:
virtual int emitCtor(Node *n);
virtual int emitDtor(Node *n);
virtual int enterVariable(Node *n);
virtual int exitVariable(Node *n);
virtual int enterFunction(Node *n);
virtual int exitFunction(Node *n);
virtual int enterClass(Node *n);
virtual int exitClass(Node *n);
virtual int emitFunction(Node *n, bool is_member);
virtual int emitFunctionDispatcher(Node *n, bool is_member);
virtual int emitGetter(Node *n, bool is_member);
virtual int emitSetter(Node *n, bool is_member);
void marshalInputArgs(Node *n, ParmList *parms, Wrapper *wrapper, MarshallingMode mode, bool is_member, bool is_static = false);
void marshalOutput(Node *n, String *actioncode, Wrapper *wrapper);
Parm *skipIgnoredArgs(Parm *p);
virtual int switchNamespace(Node *n);
virtual int createNamespace(String *scope);
virtual Hash *createNamespaceEntry(const char *name, const char *parent);
virtual int emitNamespaces();
virtual int emitConstant(Node *n);
private:
File *f_wrap_cpp;
File *f_runtime;
File *f_header;
File *f_wrappers;
File *f_init;
String *NULL_STR;
String *VETO_SET;
const char *GLOBAL_STR;
// contains context specific structs
// to allow generation different class definition tables
// which are switched on namespace change
Hash *namespaces;
Hash *current_namespace;
// dynamically filled code parts
String *create_namespaces_code;
String *register_namespaces_code;
String *current_class_functions;
String *class_variables_code;
String *class_static_functions_code;
String *class_static_variables_code;
String *ctor_wrappers;
String *ctor_dispatcher_code;
String *initializer_code;
String *function_dispatcher_code;
// state variables
String *current_propertyname;
String *current_getter;
String *current_setter;
bool is_immutable;
String *current_classname;
String *current_classname_mangled;
String *current_classtype;
String *current_classtype_mangled;
String *current_functionwrapper;
String *current_functionname;
};
/* -----------------------------------------------------------------------------
* JSEmitter()
* ----------------------------------------------------------------------------- */
JSEmitter::JSEmitter()
: empty_string(NewString("")), current_wrapper(NULL), is_static(false), debug(false) {
templates = NewHash();
}
/* -----------------------------------------------------------------------------
* ~JSEmitter()
* ----------------------------------------------------------------------------- */
JSEmitter::~JSEmitter() {
Delete(empty_string);
Delete(templates);
}
/* -----------------------------------------------------------------------------
* JSEmitter::RegisterTemplate() : Registers a code template
* ----------------------------------------------------------------------------- */
int JSEmitter::registerTemplate(const String *name, const String *code) {
return Setattr(templates, name, code);
}
/* -----------------------------------------------------------------------------
* JSEmitter::GetTemplate() : Retrieves a registered a code template
* ----------------------------------------------------------------------------- */
Template JSEmitter::getTemplate(const String *name) {
String *templ = Getattr(templates, name);
if (!templ) {
Printf(stderr, "Could not find template %s\n.", name);
SWIG_exit(EXIT_FAILURE);
}
Template t(templ, name, debug);
return t;
}
void JSEmitter::enableDebug() {
debug = true;
}
void JSEmitter::setStaticFlag(bool _is_static) {
is_static = _is_static;
}
/* -----------------------------------------------------------------------------
* JSEmitter::typemapLookup()
*
* n - for input only and must contain info for Getfile(n) and Getline(n) to work
* tmap_method - typemap method name
* type - typemap type to lookup
* warning - warning number to issue if no typemaps found
* typemap_attributes - the typemap attributes are attached to this node and will
* also be used for temporary storage if non null
* return is never NULL, unlike Swig_typemap_lookup()
* ----------------------------------------------------------------------------- */
const String *JSEmitter::typemapLookup(Node *n, const_String_or_char_ptr tmap_method, SwigType *type, int warning, Node *typemap_attributes) {
Node *node = !typemap_attributes ? NewHash() : typemap_attributes;
Setattr(node, "type", type);
Setfile(node, Getfile(n));
Setline(node, Getline(n));
const String *tm = Swig_typemap_lookup(tmap_method, node, "", 0);
if (!tm) {
tm = empty_string;
if (warning != WARN_NONE) {
Swig_warning(warning, Getfile(n), Getline(n), "No %s typemap defined for %s\n", tmap_method, SwigType_str(type, 0));
}
}
if (!typemap_attributes) {
Delete(node);
}
return tm;
}
/* -----------------------------------------------------------------------------
* JSEmitter::getBaseClass() : the node of the base class or NULL
* ----------------------------------------------------------------------------- */
Node *JSEmitter::getBaseClass(Node *n) {
// retrieve the first base class that is not %ignored
List *baselist = Getattr(n, "bases");
if (baselist) {
Iterator base = First(baselist);
while (base.item && GetFlag(base.item, "feature:ignore")) {
base = Next(base);
}
return base.item;
}
return NULL;
}
/* -----------------------------------------------------------------------------
* JSEmitter::emitWrapperFunction() : dispatches emitter functions
* ----------------------------------------------------------------------------- */
int JSEmitter::emitWrapperFunction(Node *n) {
int ret = SWIG_OK;
current_wrapper = NewWrapper();
Setattr(n, "wrap:name", Getattr(n, "sym:name"));
String *kind = Getattr(n, "kind");
if (kind) {
bool is_member = GetFlag(n, "ismember");
if (Cmp(kind, "function") == 0) {
ret = emitFunction(n, is_member);
} else if (Cmp(kind, "variable") == 0) {
if (isSetterMethod(n)) {
ret = emitSetter(n, is_member);
} else {
ret = emitGetter(n, is_member);
}
} else {
Printf(stderr, "Warning: unsupported wrapper function type\n");
Swig_print_node(n);
ret = SWIG_ERROR;
}
} else {
String *view = Getattr(n, "view");
if (Cmp(view, "constructorHandler") == 0) {
ret = emitCtor(n);
} else if (Cmp(view, "destructorHandler") == 0) {
ret = emitDtor(n);
} else {
Printf(stderr, "Warning: unsupported wrapper function type");
Swig_print_node(n);
ret = SWIG_ERROR;
}
}
DelWrapper(current_wrapper);
current_wrapper = 0;
return ret;
}
/* -----------------------------------------------------------------------------
* __swigjs_str_ends_with() : c string helper to check suffix match
* ----------------------------------------------------------------------------- */
int __swigjs_str_ends_with(const char *str, const char *suffix) {
if (str == NULL || suffix == NULL)
return 0;
size_t str_len = strlen(str);
size_t suffix_len = strlen(suffix);
if (suffix_len > str_len)
return 0;
return 0 == strncmp(str + str_len - suffix_len, suffix, suffix_len);
}
/* -----------------------------------------------------------------------------
* JSEmitter::isSetterMethod() : helper to check if a method is a setter function
* ----------------------------------------------------------------------------- */
bool JSEmitter::isSetterMethod(Node *n) {
String *symname = Getattr(n, "sym:name");
return (__swigjs_str_ends_with((char *) Data(symname), "_set") != 0);
}
/* -----------------------------------------------------------------------------
* Template::Template() : creates a Template class for given template code
* ----------------------------------------------------------------------------- */
Template::Template(const String *code_) {
if (!code_) {
Printf(stdout, "Template code was null. Illegal input for template.");
SWIG_exit(EXIT_FAILURE);
}
debug = false;
code = NewString(code_);
templateName = NewString("");
}
Template::Template(const String *code_, const String *templateName_, bool debug_) {
if (!code_) {
Printf(stdout, "Template code was null. Illegal input for template.");
SWIG_exit(EXIT_FAILURE);
}
code = NewString(code_);
templateName = NewString(templateName_);
debug = debug_;
}
/* -----------------------------------------------------------------------------
* Template::~Template() : cleans up of Template.
* ----------------------------------------------------------------------------- */
Template::~Template() {
Delete(code);
Delete(templateName);
}
/* -----------------------------------------------------------------------------
* String* Template::str() : retrieves the current content of the template.
* ----------------------------------------------------------------------------- */
String *Template::str() {
if (debug) {
String *pre_code = NewString("");
String *post_code = NewString("");
String *debug_code = NewString("");
Printf(pre_code, "//begin fragment(\"%s\")\n", templateName);
Printf(post_code, "//end fragment(\"%s\")\n", templateName);
Printf(debug_code, "%s\n%s\n%s", pre_code, code, post_code);
Delete(code);
Delete(pre_code);
Delete(post_code);
code = debug_code;
}
return code;
}
/* -----------------------------------------------------------------------------
* Template& Template::replace(const String* pattern, const String* repl) :
*
* replaces all occurances of a given pattern with a given replacement.
*
* - pattern: the pattern to be replaced
* - repl: the replacement string
* - returns a reference to the Template to allow chaining of methods.
* ----------------------------------------------------------------------------- */
Template & Template::replace(const String *pattern, const String *repl) {
::Replaceall(code, pattern, repl);
return *this;
}
JSCEmitter::JSCEmitter()
:
JSEmitter(), NULL_STR(NewString("NULL")), current_classname(NULL), f_header(NULL), current_classtype(NULL), f_runtime(NULL), current_class_functions(NULL),
f_wrappers(NULL), current_getter(NULL), is_immutable(NULL), create_namespaces_code(NULL), current_classname_mangled(NULL), initializer_code(NULL),
register_namespaces_code(NULL), f_wrap_cpp(NULL), current_setter(NULL), ctor_dispatcher_code(NULL), current_functionwrapper(NULL),
class_static_functions_code(NULL), namespaces(NULL), function_dispatcher_code(NULL), namespaces(NULL), GLOBAL_STR(NULL), current_propertyname(NULL),
current_namespace(NULL), ctor_wrappers(NULL), class_static_variables_code(NULL), class_variables_code(NULL), f_init(NULL), current_functionname(NULL),
current_classtype_mangled(NULL), VETO_SET(NewString("JS_veto_set_variable")) {
}
JSCEmitter::~JSCEmitter() {
Delete(NULL_STR);
Delete(VETO_SET);
}
/* ---------------------------------------------------------------------
* skipIgnoredArgs()
* --------------------------------------------------------------------- */
Parm *JSCEmitter::skipIgnoredArgs(Parm *p) {
while (checkAttribute(p, "tmap:in:numinputs", "0")) {
p = Getattr(p, "tmap:in:next");
}
return p;
}
/* ---------------------------------------------------------------------
* marshalInputArgs()
*
* Process all of the arguments passed into the argv array
* and convert them into C/C++ function arguments using the
* supplied typemaps.
* --------------------------------------------------------------------- */
void JSCEmitter::marshalInputArgs(Node *n, ParmList *parms, Wrapper *wrapper, MarshallingMode mode, bool is_member, bool is_static) {
String *tm;
Parm *p;
int startIdx = 0;
if (is_member && !is_static)
startIdx = 1;
int i = 0;
for (p = parms; p; p = nextSibling(p), i++) {
SwigType *pt = Getattr(p, "type");
String *arg = NewString("");
switch (mode) {
case Getter:
case Function:
if (is_member && !is_static && i == 0) {
Printv(arg, "thisObject", 0);
} else {
Printf(arg, "argv[%d]", i - startIdx);
}
break;
case Setter:
if (is_member && !is_static && i == 0) {
Printv(arg, "thisObject", 0);
} else {
Printv(arg, "value", 0);
}
break;
case Ctor:
Printf(arg, "argv[%d]", i);
break;
default:
throw "Illegal state.";
}
tm = Getattr(p, "tmap:in"); // Get typemap for this argument
if (tm != NULL) {
Replaceall(tm, "$input", arg);
Setattr(p, "emit:input", arg);
if (Getattr(p, "wrap:disown") || (Getattr(p, "tmap:in:disown"))) {
Replaceall(tm, "$disown", "SWIG_POINTER_DISOWN");
} else {
Replaceall(tm, "$disown", "0");
}
Replaceall(tm, "$symname", Getattr(n, "sym:name"));
Printf(wrapper->code, "%s\n", tm);
} else {
Swig_warning(WARN_TYPEMAP_IN_UNDEF, input_file, line_number, "Unable to use type %s as a function argument.\n", SwigType_str(pt, 0));
}
Delete(arg);
}
}
/* ---------------------------------------------------------------------
* marshalOutput()
*
* Process the return value of the C/C++ function call
* and convert them into the Javascript types using the
* supplied typemaps.
* --------------------------------------------------------------------- */
void JSCEmitter::marshalOutput(Node *n, String *actioncode, Wrapper *wrapper) {
SwigType *type = Getattr(n, "type");
Setattr(n, "type", type);
String *tm;
// HACK: output types are not registered as swig_types automatically
if (SwigType_ispointer(type)) {
SwigType_remember_clientdata(type, NewString("0"));
}
if ((tm = Swig_typemap_lookup_out("out", n, "result", wrapper, actioncode))) {
Replaceall(tm, "$result", "jsresult");
// TODO: May not be the correct way
Replaceall(tm, "$objecttype", Swig_scopename_last(SwigType_str(SwigType_strip_qualifiers(type), 0)));
if (GetFlag(n, "feature:new")) {
Replaceall(tm, "$owner", "SWIG_POINTER_OWN");
} else {
Replaceall(tm, "$owner", "0");
}
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"));
}
emit_return_variable(n, type, wrapper);
}
int JSCEmitter::initialize(Node *n) {
/* Get the output file name */
String *outfile = Getattr(n, "outfile");
/* Initialize I/O */
f_wrap_cpp = NewFile(outfile, "w", SWIG_output_files());
if (!f_wrap_cpp) {
FileErrorDisplay(outfile);
SWIG_exit(EXIT_FAILURE);
}
/* Initialization of members */
f_runtime = NewString("");
f_init = NewString("");
f_header = NewString("");
f_wrappers = NewString("");
create_namespaces_code = NewString("");
register_namespaces_code = NewString("");
initializer_code = NewString("");
namespaces = NewHash();
Hash *global_namespace = createNamespaceEntry(Char(Getattr(n, "name")), "global");
Setattr(namespaces, "::", global_namespace);
current_namespace = global_namespace;
/* Register file targets with the SWIG file handler */
Swig_register_filebyname("begin", f_wrap_cpp);
Swig_register_filebyname("header", f_header);
Swig_register_filebyname("wrapper", f_wrappers);
Swig_register_filebyname("runtime", f_runtime);
Swig_register_filebyname("init", f_init);
return SWIG_OK;
}
int JSCEmitter::dump(Node *n) {
/* Get the module name */
String *module = Getattr(n, "name");
// write the swig banner
Swig_banner(f_wrap_cpp);
SwigType_emit_type_table(f_runtime, f_wrappers);
Printv(f_wrap_cpp, f_runtime, "\n", 0);
Printv(f_wrap_cpp, f_header, "\n", 0);
Printv(f_wrap_cpp, f_wrappers, "\n", 0);
emitNamespaces();
// compose the initializer function using a template
Template initializer(getTemplate("JS_initializer"));
initializer.replace("${modulename}", module)
.replace("${initializercode}", initializer_code)
.replace("${create_namespaces}", create_namespaces_code)
.replace("${register_namespaces}", register_namespaces_code);
Wrapper_pretty_print(initializer.str(), f_init);
Printv(f_wrap_cpp, f_init, "\n", 0);
return SWIG_OK;
}
int JSCEmitter::close() {
/* strings */
Delete(f_runtime);
Delete(f_header);
Delete(f_wrappers);
Delete(f_init);
Delete(create_namespaces_code);
Delete(register_namespaces_code);
Delete(initializer_code);
Delete(namespaces);
/* files */
::Close(f_wrap_cpp);
Delete(f_wrap_cpp);
return SWIG_OK;
}
int JSCEmitter::enterFunction(Node *n) {
bool is_overloaded = GetFlag(n, "sym:overloaded");
current_functionname = Getattr(n, "sym:name");
if (is_overloaded && function_dispatcher_code == 0) {
function_dispatcher_code = NewString("");
}
return SWIG_OK;
}
int JSCEmitter::exitFunction(Node *n) {
Template t_function = getTemplate("JS_functiondecl");
String *functionname = current_functionname;
String *functionwrapper = current_functionwrapper;
bool is_member = GetFlag(n, "ismember");
// handle overloaded functions
// Note: wrappers for overloaded functions are currently
// not made available (e.g., foo_double, foo_int)
// maybe this could be enabled by an extra feature flag
bool is_overloaded = GetFlag(n, "sym:overloaded");
if (is_overloaded) {
if (!Getattr(n, "sym:nextSibling")) {
functionwrapper = Swig_name_wrapper(Getattr(n, "name"));
// note: set this attribute to transfer ownership
Setattr(n, "wrap:dispatcher", functionwrapper);
// create dispatcher
emitFunctionDispatcher(n, is_member);
Delete(function_dispatcher_code);
function_dispatcher_code = 0;
} else {
//don't register wrappers of overloaded functions in function tables
return SWIG_OK;
}
}
t_function.replace("${functionname}", functionname)
.replace("${functionwrapper}", functionwrapper);
if (is_member) {
if (Equal(Getattr(n, "storage"), "static")) {
Printv(class_static_functions_code, t_function.str(), 0);
} else {
Printv(current_class_functions, t_function.str(), 0);
}
} else {
Printv(Getattr(current_namespace, "functions"), t_function.str(), 0);
}
return SWIG_OK;
}
int JSCEmitter::enterVariable(Node *n) {
current_getter = NULL_STR;
current_setter = VETO_SET;
current_propertyname = Swig_scopename_last(Getattr(n, "name"));
is_immutable = GetFlag(n, "wrap:immutable");
return SWIG_OK;
}
int JSCEmitter::exitVariable(Node *n) {
Template t_variable(getTemplate("JS_variabledecl"));
t_variable.replace("${setname}", current_setter)
.replace("${getname}", current_getter)
.replace("${propertyname}", current_propertyname);
if (GetFlag(n, "ismember")) {
if (Equal(Getattr(n, "storage"), "static") || (Equal(Getattr(n, "nodeType"), "enumitem"))) {
Printv(class_static_variables_code, t_variable.str(), 0);
} else {
Printv(class_variables_code, t_variable.str(), 0);
}
} else {
Printv(Getattr(current_namespace, "values"), t_variable.str(), 0);
}
return SWIG_OK;
}
int JSCEmitter::enterClass(Node *n) {
current_classname = Getattr(n, "sym:name");
current_classname_mangled = SwigType_manglestr(Getattr(n, "name"));
current_classtype = NewString(Getattr(n, "classtype"));
String *type = SwigType_manglestr(Getattr(n, "classtypeobj"));
current_classtype_mangled = NewString("");
Printf(current_classtype_mangled, "p%s", type);
Delete(type);
Template t_class_defn = getTemplate("JS_class_definition");
t_class_defn.replace("${classname_mangled}", current_classname_mangled);
Wrapper_pretty_print(t_class_defn.str(), f_wrappers);
class_variables_code = NewString("");
current_class_functions = NewString("");
class_static_variables_code = NewString("");
class_static_functions_code = NewString("");
ctor_wrappers = NewString("");
ctor_dispatcher_code = NewString("");
return SWIG_OK;
}
int JSCEmitter::exitClass(Node *n) {
String *mangled_name = SwigType_manglestr(Getattr(n, "name"));
Template t_class_tables(getTemplate("JS_class_tables"));
t_class_tables.replace("${classname_mangled}", mangled_name)
.replace("${jsclassvariables}", class_variables_code)
.replace("${jsclassfunctions}", current_class_functions)
.replace("${jsstaticclassfunctions}", class_static_functions_code)
.replace("${jsstaticclassvariables}", class_static_variables_code);
Wrapper_pretty_print(t_class_tables.str(), f_wrappers);
/* adds the ctor wrappers at this position */
// Note: this is necessary to avoid extra forward declarations.
Printv(f_wrappers, ctor_wrappers, 0);
/* adds the main constructor wrapper function */
Template t_mainctor(getTemplate("JS_mainctordefn"));
t_mainctor.replace("${classname_mangled}", mangled_name)
.replace("${DISPATCH_CASES}", ctor_dispatcher_code);
Wrapper_pretty_print(t_mainctor.str(), f_wrappers);
/* adds a class template statement to initializer function */
Template t_classtemplate(getTemplate("JS_create_class_template"));
/* prepare registration of base class */
String *base_name_mangled = NewString("_SwigObject");
Node *base_class = getBaseClass(n);
if (base_class != NULL) {
Delete(base_name_mangled);
base_name_mangled = SwigType_manglestr(Getattr(base_class, "name"));
}
t_classtemplate.replace("${classname_mangled}", mangled_name)
.replace("${classtype_mangled}", current_classtype_mangled)
.replace("${base_classname}", base_name_mangled);
Wrapper_pretty_print(t_classtemplate.str(), initializer_code);
/*
String *clientdata = NewString("");
Printv(clientdata, mangled_name, "_classRef", 0);
SwigType_remember_clientdata(current_classtype_mangled, clientdata);
*/
SwigType_remember_clientdata(current_classtype_mangled, NewString("0"));
/* adds a class registration statement to initializer function */
Template t_registerclass(getTemplate("JS_register_class"));
t_registerclass.replace("${classname}", current_classname)
.replace("${classname_mangled}", current_classname_mangled)
.replace("${namespace_mangled}", Getattr(current_namespace, "name_mangled"));
Wrapper_pretty_print(t_registerclass.str(), initializer_code);
/* clean up all DOHs */
Delete(class_variables_code);
Delete(current_class_functions);
Delete(class_static_variables_code);
Delete(class_static_functions_code);
Delete(ctor_wrappers);
Delete(mangled_name);
Delete(ctor_dispatcher_code);
class_variables_code = 0;
current_class_functions = 0;
class_static_variables_code = 0;
class_static_functions_code = 0;
ctor_wrappers = 0;
ctor_dispatcher_code = 0;
Delete(current_classname);
Delete(current_classname_mangled);
Delete(current_classtype);
Delete(current_classtype_mangled);
return SWIG_OK;
}
int JSCEmitter::emitCtor(Node *n) {
Template t_ctor(getTemplate("JS_ctordefn"));
String *mangled_name = SwigType_manglestr(Getattr(n, "name"));
String *name = (Getattr(n, "wrap:name"));
String *overname = Getattr(n, "sym:overname");
String *wrap_name = Swig_name_wrapper(name);
Setattr(n, "wrap:name", wrap_name);
ParmList *params = Getattr(n, "parms");
emit_parameter_variables(params, current_wrapper);
emit_attach_parmmaps(params, current_wrapper);
Printf(current_wrapper->locals, "%sresult;", SwigType_str(Getattr(n, "type"), 0));
int num_args = emit_num_arguments(params);
String *action = emit_action(n);
marshalInputArgs(n, params, current_wrapper, Ctor, true);
Printv(current_wrapper->code, action, "\n", 0);
t_ctor.replace("${classname_mangled}", mangled_name)
.replace("${overloadext}", overname)
.replace("${LOCALS}", current_wrapper->locals)
.replace("${CODE}", current_wrapper->code)
.replace("${type_mangled}", current_classtype_mangled);
Wrapper_pretty_print(t_ctor.str(), ctor_wrappers);
String *argcount = NewString("");
Printf(argcount, "%d", num_args);
Template t_ctor_case(getTemplate("JS_ctor_dispatch_case"));
t_ctor_case.replace("${classname_mangled}", mangled_name)
.replace("${overloadext}", overname)
.replace("${argcount}", argcount);
Printv(ctor_dispatcher_code, t_ctor_case.str(), 0);
Delete(argcount);
return SWIG_OK;
}
int JSCEmitter::emitDtor(Node *) {
Template t_dtor = getTemplate("JS_destructordefn");
t_dtor.replace("${classname_mangled}", current_classname_mangled)
.replace("${type}", current_classtype);
Wrapper_pretty_print(t_dtor.str(), f_wrappers);
return SWIG_OK;
}
int JSCEmitter::emitGetter(Node *n, bool is_member) {
Template t_getter(getTemplate("JS_getproperty"));
bool is_static = Equal(Getattr(n, "storage"), "static");
String *name = Getattr(n, "wrap:name");
String *wrap_name = Swig_name_wrapper(name);
current_getter = wrap_name;
Setattr(n, "wrap:name", wrap_name);
ParmList *params = Getattr(n, "parms");
emit_parameter_variables(params, current_wrapper);
emit_attach_parmmaps(params, current_wrapper);
Wrapper_add_local(current_wrapper, "jsresult", "JSValueRef jsresult");
String *action = emit_action(n);
marshalInputArgs(n, params, current_wrapper, Getter, is_member, is_static);
marshalOutput(n, action, current_wrapper);
t_getter.replace("${getname}", wrap_name)
.replace("${LOCALS}", current_wrapper->locals)
.replace("${CODE}", current_wrapper->code);
Wrapper_pretty_print(t_getter.str(), f_wrappers);
return SWIG_OK;
}
int JSCEmitter::emitSetter(Node *n, bool is_member) {
// skip variable that are immutable
if (is_immutable)
return SWIG_OK;
Template t_setter(getTemplate("JS_setproperty"));
bool is_static = Equal(Getattr(n, "storage"), "static");
String *name = Getattr(n, "wrap:name");
String *wrap_name = Swig_name_wrapper(name);
current_setter = wrap_name;
Setattr(n, "wrap:name", wrap_name);
ParmList *params = Getattr(n, "parms");
emit_parameter_variables(params, current_wrapper);
emit_attach_parmmaps(params, current_wrapper);
String *action = emit_action(n);
marshalInputArgs(n, params, current_wrapper, Setter, is_member, is_static);
Append(current_wrapper->code, action);
t_setter.replace("${setname}", wrap_name)
.replace("${LOCALS}", current_wrapper->locals)
.replace("${CODE}", current_wrapper->code);
Wrapper_pretty_print(t_setter.str(), f_wrappers);
return SWIG_OK;
}
/* -----------------------------------------------------------------------------
* swig::JSEmitter::emitConstant() : triggers code generation for constants
* ----------------------------------------------------------------------------- */
int JSCEmitter::emitConstant(Node *n) {
// call the variable methods as a constants are
// registred in same way
enterVariable(n);
current_wrapper = NewWrapper();
String *action = NewString("");
String *name = Getattr(n, "name");
String *wrap_name = Swig_name_wrapper(name);
String *value = Getattr(n, "rawval");
if (value == NULL) {
value = Getattr(n, "rawvalue");
}
if (value == NULL) {
value = Getattr(n, "value");
}
Template t_getter(getTemplate("JS_getproperty"));
current_getter = wrap_name;
Setattr(n, "wrap:name", wrap_name);
Printf(action, "result = %s;\n", value);
Setattr(n, "wrap:action", action);
Wrapper_add_local(current_wrapper, "jsresult", "JSValueRef jsresult");
marshalOutput(n, action, current_wrapper);
t_getter.replace("${getname}", wrap_name)
.replace("${LOCALS}", current_wrapper->locals)
.replace("${CODE}", current_wrapper->code);
Wrapper_pretty_print(t_getter.str(), f_wrappers);
DelWrapper(current_wrapper);
current_wrapper = 0;
exitVariable(n);
return SWIG_OK;
}
int JSCEmitter::emitFunction(Node *n, bool is_member) {
Template t_function(getTemplate("JS_functionwrapper"));
// Note: there is an inconsistency in SWIG with static member functions
// that do not have storage:static
// in these cases the context (staticmemberfunctionHandler) is
// exploited and a flag is set temporarily
// TODO: this could be done in general with is_member and is_static
bool is_static = JSEmitter::is_static || Equal(Getattr(n, "storage"), "static");
bool is_overloaded = GetFlag(n, "sym:overloaded");
String *name = Getattr(n, "sym:name");
String *wrap_name = Swig_name_wrapper(name);
if (is_overloaded) {
Append(wrap_name, Getattr(n, "sym:overname"));
}
current_functionwrapper = wrap_name;
Setattr(n, "wrap:name", wrap_name);
ParmList *params = Getattr(n, "parms");
emit_parameter_variables(params, current_wrapper);
emit_attach_parmmaps(params, current_wrapper);
Wrapper_add_local(current_wrapper, "jsresult", "JSValueRef jsresult");
String *action = emit_action(n);
marshalInputArgs(n, params, current_wrapper, Function, is_member, is_static);
marshalOutput(n, action, current_wrapper);
t_function.replace("${functionname}", wrap_name)
.replace("${LOCALS}", current_wrapper->locals)
.replace("${CODE}", current_wrapper->code);
Wrapper_pretty_print(t_function.str(), f_wrappers);
if (is_overloaded) {
Template t_dispatch_case = getTemplate("JS_function_dispatch_case");
int argc = emit_num_arguments(params);
String *argcount = NewString("");
Printf(argcount, "%d", argc);
t_dispatch_case.replace("${functionwrapper}", wrap_name)
.replace("${argcount}", argcount);
Printv(function_dispatcher_code, t_dispatch_case.str(), 0);
Delete(argcount);
}
return SWIG_OK;
}
int JSCEmitter::emitFunctionDispatcher(Node *n, bool /*is_member */ ) {
Template t_function(getTemplate("JS_functionwrapper"));
Wrapper *wrapper = NewWrapper();
String *wrap_name = Swig_name_wrapper(Getattr(n, "name"));
Setattr(n, "wrap:name", wrap_name);
Wrapper_add_local(wrapper, "jsresult", "JSValueRef jsresult");
Append(wrapper->code, function_dispatcher_code);
Append(wrapper->code, getTemplate("JS_function_dispatch_case_default").str());
t_function.replace("${functionname}", wrap_name)
.replace("${LOCALS}", wrapper->locals)
.replace("${CODE}", wrapper->code);
Wrapper_pretty_print(t_function.str(), f_wrappers);
DelWrapper(wrapper);
return SWIG_OK;
}
int JSCEmitter::switchNamespace(Node *n) {
if (!GetFlag(n, "feature:nspace")) {
current_namespace = Getattr(namespaces, "::");
} else {
String *scope = Swig_scopename_prefix(Getattr(n, "name"));
if (scope) {
// if the scope is not yet registered
// create all scopes/namespaces recursively
if (!Getattr(namespaces, scope)) {
createNamespace(scope);
}
current_namespace = Getattr(namespaces, scope);
} else {
current_namespace = Getattr(namespaces, "::");
}
}
return SWIG_OK;
}
int JSCEmitter::createNamespace(String *scope) {
String *parent_scope = Swig_scopename_prefix(scope);
Hash *parent_namespace;
if (parent_scope == 0) {
parent_namespace = Getattr(namespaces, "::");
} else if (!Getattr(namespaces, parent_scope)) {
createNamespace(parent_scope);
parent_namespace = Getattr(namespaces, parent_scope);
} else {
parent_namespace = Getattr(namespaces, parent_scope);
}
assert(parent_namespace != 0);
Hash *new_namespace = createNamespaceEntry(Char(scope), Char(Getattr(parent_namespace, "name")));
Setattr(namespaces, scope, new_namespace);
Delete(parent_scope);
return SWIG_OK;
}
Hash *JSCEmitter::createNamespaceEntry(const char *name, const char *parent) {
Hash *entry = NewHash();
String *_name = NewString(name);
Setattr(entry, "name", Swig_scopename_last(_name));
Setattr(entry, "name_mangled", Swig_name_mangle(_name));
Setattr(entry, "parent", NewString(parent));
Setattr(entry, "functions", NewString(""));
Setattr(entry, "values", NewString(""));
Delete(_name);
return entry;
}
int JSCEmitter::emitNamespaces() {
Iterator it;
for (it = First(namespaces); it.item; it = Next(it)) {
Hash *entry = it.item;
String *name = Getattr(entry, "name");
String *parent = Getattr(entry, "parent");
String *functions = Getattr(entry, "functions");
String *variables = Getattr(entry, "values");
String *name_mangled = Getattr(entry, "name_mangled");
String *parent_mangled = Swig_name_mangle(parent);
Template namespace_definition(getTemplate("JS_globaldefn"));
namespace_definition.replace("${jsglobalvariables}", variables)
.replace("${jsglobalfunctions}", functions)
.replace("${namespace}", name_mangled);
Wrapper_pretty_print(namespace_definition.str(), f_wrap_cpp);
Template t_createNamespace(getTemplate("JS_create_namespace"));
t_createNamespace.replace("${namespace}", name_mangled);
Printv(create_namespaces_code, t_createNamespace.str(), 0);
Template t_registerNamespace(getTemplate("JS_register_namespace"));
t_registerNamespace.replace("${namespace_mangled}", name_mangled)
.replace("${namespace}", name)
.replace("${parent_namespace}", parent_mangled);
Printv(register_namespaces_code, t_registerNamespace.str(), 0);
}
return SWIG_OK;
}
JSEmitter *swig_javascript_create_JSC_emitter() {
return new JSCEmitter();
}
extern JSEmitter *swig_javascript_create_JSC_emitter();
/* ********************************************************************
* JAVASCRIPT
* ********************************************************************/
class JAVASCRIPT:public Language {
public:
JAVASCRIPT() {
emitter = NULL;
} ~JAVASCRIPT() {
}
virtual int functionHandler(Node *n);
virtual int globalfunctionHandler(Node *n);
virtual int variableHandler(Node *n);
virtual int globalvariableHandler(Node *n);
virtual int staticmemberfunctionHandler(Node *n);
virtual int classHandler(Node *n);
virtual int functionWrapper(Node *n);
virtual int constantWrapper(Node *n);
/**
* Registers all %fragments assigned to section "templates" with the Emitter.
**/
virtual int fragmentDirective(Node *n);
virtual int constantDirective(Node *n);
virtual void main(int argc, char *argv[]);
virtual int top(Node *n);
private:
JSEmitter * emitter;
};
/* ---------------------------------------------------------------------
* functionWrapper()
*
* Low level code generator for functions
* --------------------------------------------------------------------- */
int JAVASCRIPT::functionWrapper(Node *n) {
// note: the default implementation only prints a message
// Language::functionWrapper(n);
emitter->emitWrapperFunction(n);
return SWIG_OK;
}
/* ---------------------------------------------------------------------
* functionHandler()
*
* Function handler for generating wrappers for functions
* --------------------------------------------------------------------- */
int JAVASCRIPT::functionHandler(Node *n) {
if (GetFlag(n, "isextension") == 1)
SetFlag(n, "ismember");
emitter->enterFunction(n);
Language::functionHandler(n);
emitter->exitFunction(n);
return SWIG_OK;
}
/* ---------------------------------------------------------------------
* globalfunctionHandler()
*
* Function handler for generating wrappers for functions
* --------------------------------------------------------------------- */
int JAVASCRIPT::globalfunctionHandler(Node *n) {
emitter->switchNamespace(n);
Language::globalfunctionHandler(n);
return SWIG_OK;
}
int JAVASCRIPT::staticmemberfunctionHandler(Node *n) {
// workaround: storage=static is not set for static member functions
emitter->setStaticFlag(true);
Language::staticmemberfunctionHandler(n);
emitter->setStaticFlag(false);
return SWIG_OK;
}
/* ---------------------------------------------------------------------
* variableHandler()
*
* Function handler for generating wrappers for variables
* --------------------------------------------------------------------- */
int JAVASCRIPT::variableHandler(Node *n) {
if (!is_assignable(n)
// HACK: don't know why this is assignable? But does not compile
|| Equal(Getattr(n, "type"), "a().char")) {
SetFlag(n, "wrap:immutable");
}
emitter->enterVariable(n);
Language::variableHandler(n);
emitter->exitVariable(n);
return SWIG_OK;
}
/* ---------------------------------------------------------------------
* globalvariableHandler()
*
* Function handler for generating wrappers for global variables
* --------------------------------------------------------------------- */
int JAVASCRIPT::globalvariableHandler(Node *n) {
emitter->switchNamespace(n);
Language::globalvariableHandler(n);
return SWIG_OK;
}
/* ---------------------------------------------------------------------
* constantHandler()
*
* Function handler for generating wrappers for constants
* --------------------------------------------------------------------- */
int JAVASCRIPT::constantWrapper(Node *n) {
// TODO: handle callback declarations
//Note: callbacks trigger this wrapper handler
if (Equal(Getattr(n, "kind"), "function")) {
return SWIG_OK;
}
//Language::constantWrapper(n);
emitter->emitConstant(n);
return SWIG_OK;
}
/* ---------------------------------------------------------------------
* classHandler()
*
* Function handler for generating wrappers for class
* --------------------------------------------------------------------- */
int JAVASCRIPT::classHandler(Node *n) {
emitter->switchNamespace(n);
emitter->enterClass(n);
Language::classHandler(n);
emitter->exitClass(n);
return SWIG_OK;
}
int JAVASCRIPT::fragmentDirective(Node *n) {
// catch all fragment directives that have "templates" as location
// and register them at the emitter.
String *section = Getattr(n, "section");
if (Cmp(section, "templates") == 0) {
emitter->registerTemplate(Getattr(n, "value"), Getattr(n, "code"));
} else {
Swig_fragment_register(n);
}
return SWIG_OK;
}
int JAVASCRIPT::constantDirective(Node *n) {
Language::constantDirective(n);
return SWIG_OK;
}
/* ---------------------------------------------------------------------
* top()
*
* Function handler for processing top node of the parse tree
* Wrapper code generation essentially starts from here
* --------------------------------------------------------------------- */
int JAVASCRIPT::top(Node *n) {
emitter->initialize(n);
Language::top(n);
emitter->dump(n);
emitter->close();
delete emitter;
return SWIG_OK;
}
/* ---------------------------------------------------------------------
* main()
*
* Entry point for the JAVASCRIPT module
* --------------------------------------------------------------------- */
void JAVASCRIPT::main(int argc, char *argv[]) {
// Set javascript subdirectory in SWIG library
SWIG_library_directory("javascript");
int mode = -1;
bool debug_templates = false;
for (int i = 1; i < argc; i++) {
if (argv[i]) {
if (strcmp(argv[i], "-v8") == 0) {
Swig_mark_arg(i);
mode = JSEmitter::V8;
SWIG_library_directory("javascript/v8");
} else if (strcmp(argv[i], "-jsc") == 0) {
Swig_mark_arg(i);
mode = JSEmitter::JavascriptCore;
SWIG_library_directory("javascript/jsc");
} else if (strcmp(argv[i], "-qt") == 0) {
Swig_mark_arg(i);
mode = JSEmitter::QtScript;
SWIG_library_directory("javascript/qt");
} else if (strcmp(argv[i], "-debug-templates") == 0) {
Swig_mark_arg(i);
debug_templates = true;
}
}
}
switch (mode) {
case JSEmitter::V8:
{
// TODO: emitter = create_v8_emitter();
break;
}
case JSEmitter::JavascriptCore:
{
emitter = swig_javascript_create_JSC_emitter();
break;
}
case JSEmitter::QtScript:
{
// TODO: emitter = create_qtscript_emitter();
break;
}
default:
{
Printf(stderr, "Unknown emitter type.");
SWIG_exit(-1);
break;
}
}
if (debug_templates) {
emitter->enableDebug();
}
// Add a symbol to the parser for conditional compilation
Preprocessor_define("SWIGJAVASCRIPT 1", 0);
// Add typemap definitions
SWIG_typemap_lang("javascript");
// Set configuration file
SWIG_config_file("javascript.swg");
allow_overloading();
}
/* -----------------------------------------------------------------------------
* swig_JAVASCRIPT() - Instantiate module
* ----------------------------------------------------------------------------- */
static Language *new_swig_javascript() {
return new JAVASCRIPT();
}
extern "C" Language *swig_javascript(void) {
return new_swig_javascript();
}