Mixing
Error binding properties and functions in emscripten
I'm trying to use emscripten to compile a c++ class and expose bindings. I'm running into an error from the compiler.
#include <emscripten/bind.h>
#include <emscripten/emscripten.h>
using namespace emscripten;
class MyClass {
private:
int _year;
int _month;
int _day;
public:
MyClass() { }
MyClass(int year, int month, int day);
int getMonth();
void setMonth(int);
int getYear();
void setYear(int);
int getDay();
void setDay(int);
bool isLeapYear();
int daysInMonth();
void increment();
void decrement();
};
EMSCRIPTEN_BINDINGS(my_sample_class) {
class_<MyClass>("MyClass")
.constructor<>()
.constructor<int, int, int>()
.function("getMonth", &MyClass::getMonth)
.function("increment", &MyClass::increment)
.function("decrement", &MyClass::decrement)
.property("year",&MyClass::getYear, &MyClass::setYear )
//.property("month", &MyClass::getMonth, &MyClass::setMonth )
//.property("day",&MyClass::getDay, &MyClass::setDay )
;
}
The compiler has no problems with the constructors or the function binding. I run into a problem with the property binding. I only have one uncommented to minimize the errors that I get back (they are just repeats of the same error but for different lines). Here are the errors that I'm getting back.
In file included from MyDate.cpp:1:
In file included from ./MyDate.h:2:
emscripten/bind.h:1393:26: error: implicit instantiation of undefined template 'emscripten::internal::GetterPolicy<int (MyClass::*)()>'
auto gter = &GP::template get<ClassType>;
^
./MyDate.h:37:6: note: in instantiation of function template specialization 'emscripten::class_<MyClass, emscripten::internal::NoBaseClass>::property<int (MyClass::*)(), void (MyClass::*)(int)>' requested here
.property("year",&MyClass::getYear, &MyClass::setYear )
^
emscripten/bind.h:569:16: note: template is declared here
struct GetterPolicy;
^
emscripten/bind.h:1399:33: error: implicit instantiation of undefined template 'emscripten::internal::GetterPolicy<int (MyClass::*)()>'
TypeID<typename GP::ReturnType>::get(),
^
emscripten1.38.21systemincludeemscripten/bind.h:569:16: note: template is declared here
struct GetterPolicy;
^
2 errors generated.
shared:ERROR: compiler frontend failed to generate LLVM bitcode, halting
I've looked up binding examples and it appears I'm using the right syntax. Does any one have any idea of what I might be doing wrong?
c++ llvm emscripten webassembly
edited Jan 3 at 1:59
Abyx
8,28933068
asked Jan 3 at 0:43
Joel Joel
1,3641218
add a comment |
I'm trying to use emscripten to compile a c++ class and expose bindings. I'm running into an error from the compiler.
#include <emscripten/bind.h>
#include <emscripten/emscripten.h>
using namespace emscripten;
class MyClass {
private:
int _year;
int _month;
int _day;
public:
MyClass() { }
MyClass(int year, int month, int day);
int getMonth();
void setMonth(int);
int getYear();
void setYear(int);
int getDay();
void setDay(int);
bool isLeapYear();
int daysInMonth();
void increment();
void decrement();
};
EMSCRIPTEN_BINDINGS(my_sample_class) {
class_<MyClass>("MyClass")
.constructor<>()
.constructor<int, int, int>()
.function("getMonth", &MyClass::getMonth)
.function("increment", &MyClass::increment)
.function("decrement", &MyClass::decrement)
.property("year",&MyClass::getYear, &MyClass::setYear )
//.property("month", &MyClass::getMonth, &MyClass::setMonth )
//.property("day",&MyClass::getDay, &MyClass::setDay )
;
}
The compiler has no problems with the constructors or the function binding. I run into a problem with the property binding. I only have one uncommented to minimize the errors that I get back (they are just repeats of the same error but for different lines). Here are the errors that I'm getting back.
In file included from MyDate.cpp:1:
In file included from ./MyDate.h:2:
emscripten/bind.h:1393:26: error: implicit instantiation of undefined template 'emscripten::internal::GetterPolicy<int (MyClass::*)()>'
auto gter = &GP::template get<ClassType>;
^
./MyDate.h:37:6: note: in instantiation of function template specialization 'emscripten::class_<MyClass, emscripten::internal::NoBaseClass>::property<int (MyClass::*)(), void (MyClass::*)(int)>' requested here
.property("year",&MyClass::getYear, &MyClass::setYear )
^
emscripten/bind.h:569:16: note: template is declared here
struct GetterPolicy;
^
emscripten/bind.h:1399:33: error: implicit instantiation of undefined template 'emscripten::internal::GetterPolicy<int (MyClass::*)()>'
TypeID<typename GP::ReturnType>::get(),
^
emscripten1.38.21systemincludeemscripten/bind.h:569:16: note: template is declared here
struct GetterPolicy;
^
2 errors generated.
shared:ERROR: compiler frontend failed to generate LLVM bitcode, halting
I've looked up binding examples and it appears I'm using the right syntax. Does any one have any idea of what I might be doing wrong?
c++ llvm emscripten webassembly
edited Jan 3 at 1:59
Abyx
8,28933068
asked Jan 3 at 0:43
Joel Joel
1,3641218
add a comment |
I'm trying to use emscripten to compile a c++ class and expose bindings. I'm running into an error from the compiler.
#include <emscripten/bind.h>
#include <emscripten/emscripten.h>
using namespace emscripten;
class MyClass {
private:
int _year;
int _month;
int _day;
public:
MyClass() { }
MyClass(int year, int month, int day);
int getMonth();
void setMonth(int);
int getYear();
void setYear(int);
int getDay();
void setDay(int);
bool isLeapYear();
int daysInMonth();
void increment();
void decrement();
};
EMSCRIPTEN_BINDINGS(my_sample_class) {
class_<MyClass>("MyClass")
.constructor<>()
.constructor<int, int, int>()
.function("getMonth", &MyClass::getMonth)
.function("increment", &MyClass::increment)
.function("decrement", &MyClass::decrement)
.property("year",&MyClass::getYear, &MyClass::setYear )
//.property("month", &MyClass::getMonth, &MyClass::setMonth )
//.property("day",&MyClass::getDay, &MyClass::setDay )
;
}
The compiler has no problems with the constructors or the function binding. I run into a problem with the property binding. I only have one uncommented to minimize the errors that I get back (they are just repeats of the same error but for different lines). Here are the errors that I'm getting back.
In file included from MyDate.cpp:1:
In file included from ./MyDate.h:2:
emscripten/bind.h:1393:26: error: implicit instantiation of undefined template 'emscripten::internal::GetterPolicy<int (MyClass::*)()>'
auto gter = &GP::template get<ClassType>;
^
./MyDate.h:37:6: note: in instantiation of function template specialization 'emscripten::class_<MyClass, emscripten::internal::NoBaseClass>::property<int (MyClass::*)(), void (MyClass::*)(int)>' requested here
.property("year",&MyClass::getYear, &MyClass::setYear )
^
emscripten/bind.h:569:16: note: template is declared here
struct GetterPolicy;
^
emscripten/bind.h:1399:33: error: implicit instantiation of undefined template 'emscripten::internal::GetterPolicy<int (MyClass::*)()>'
TypeID<typename GP::ReturnType>::get(),
^
emscripten1.38.21systemincludeemscripten/bind.h:569:16: note: template is declared here
struct GetterPolicy;
^
2 errors generated.
shared:ERROR: compiler frontend failed to generate LLVM bitcode, halting
I've looked up binding examples and it appears I'm using the right syntax. Does any one have any idea of what I might be doing wrong?
c++ llvm emscripten webassembly
edited Jan 3 at 1:59
Abyx
8,28933068
asked Jan 3 at 0:43
Joel Joel
1,3641218
I'm trying to use emscripten to compile a c++ class and expose bindings. I'm running into an error from the compiler.
#include <emscripten/bind.h>
#include <emscripten/emscripten.h>
using namespace emscripten;
class MyClass {
private:
int _year;
int _month;
int _day;
public:
MyClass() { }
MyClass(int year, int month, int day);
int getMonth();
void setMonth(int);
int getYear();
void setYear(int);
int getDay();
void setDay(int);
bool isLeapYear();
int daysInMonth();
void increment();
void decrement();
};
EMSCRIPTEN_BINDINGS(my_sample_class) {
class_<MyClass>("MyClass")
.constructor<>()
.constructor<int, int, int>()
.function("getMonth", &MyClass::getMonth)
.function("increment", &MyClass::increment)
.function("decrement", &MyClass::decrement)
.property("year",&MyClass::getYear, &MyClass::setYear )
//.property("month", &MyClass::getMonth, &MyClass::setMonth )
//.property("day",&MyClass::getDay, &MyClass::setDay )
;
}
The compiler has no problems with the constructors or the function binding. I run into a problem with the property binding. I only have one uncommented to minimize the errors that I get back (they are just repeats of the same error but for different lines). Here are the errors that I'm getting back.
In file included from MyDate.cpp:1:
In file included from ./MyDate.h:2:
emscripten/bind.h:1393:26: error: implicit instantiation of undefined template 'emscripten::internal::GetterPolicy<int (MyClass::*)()>'
auto gter = &GP::template get<ClassType>;
^
./MyDate.h:37:6: note: in instantiation of function template specialization 'emscripten::class_<MyClass, emscripten::internal::NoBaseClass>::property<int (MyClass::*)(), void (MyClass::*)(int)>' requested here
.property("year",&MyClass::getYear, &MyClass::setYear )
^
emscripten/bind.h:569:16: note: template is declared here
struct GetterPolicy;
^
emscripten/bind.h:1399:33: error: implicit instantiation of undefined template 'emscripten::internal::GetterPolicy<int (MyClass::*)()>'
TypeID<typename GP::ReturnType>::get(),
^
emscripten1.38.21systemincludeemscripten/bind.h:569:16: note: template is declared here
struct GetterPolicy;
^
2 errors generated.
shared:ERROR: compiler frontend failed to generate LLVM bitcode, halting
I've looked up binding examples and it appears I'm using the right syntax. Does any one have any idea of what I might be doing wrong?
c++ llvm emscripten webassembly
c++ llvm emscripten webassembly
edited Jan 3 at 1:59
Abyx
8,28933068
asked Jan 3 at 0:43
Joel Joel
1,3641218
edited Jan 3 at 1:59
Abyx
8,28933068
asked Jan 3 at 0:43
Joel Joel
1,3641218
edited Jan 3 at 1:59
Abyx
8,28933068
edited Jan 3 at 1:59
Abyx
8,28933068
edited Jan 3 at 1:59
Abyx
8,28933068
8,28933068
asked Jan 3 at 0:43
Joel Joel
1,3641218
asked Jan 3 at 0:43
Joel Joel
1,3641218
asked Jan 3 at 0:43
Joel Joel
1,3641218
1,3641218
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
Found the problem!
The getter functions must be marked as const to avoid these errors.
EX:
int getMonth() const;
answered Jan 3 at 1:53
Joel Joel
1,3641218
add a comment |
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f54015006%2ferror-binding-properties-and-functions-in-emscripten%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Found the problem!
The getter functions must be marked as const to avoid these errors.
EX:
int getMonth() const;
answered Jan 3 at 1:53
Joel Joel
1,3641218
add a comment |
Found the problem!
The getter functions must be marked as const to avoid these errors.
EX:
int getMonth() const;
answered Jan 3 at 1:53
Joel Joel
1,3641218
add a comment |
Found the problem!
The getter functions must be marked as const to avoid these errors.
EX:
int getMonth() const;
answered Jan 3 at 1:53
Joel Joel
1,3641218
Found the problem!
The getter functions must be marked as const to avoid these errors.
EX:
int getMonth() const;
answered Jan 3 at 1:53
Joel Joel
1,3641218
answered Jan 3 at 1:53
Joel Joel
1,3641218
answered Jan 3 at 1:53
Joel Joel
1,3641218
answered Jan 3 at 1:53
Joel Joel
1,3641218
1,3641218
add a comment |
add a comment |
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f54015006%2ferror-binding-properties-and-functions-in-emscripten%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
