Status: New
Owner: ----
New issue 3668 by [email protected]: Get "error: type 'const Arguments'
does not provide a subscript operator" when trying to call C++ function
using JavaScript
https://code.google.com/p/v8/issues/detail?id=3668
I am trying to call C++ functions using V8 engine but failed.
Platform:
Mac OSX 10.9.2
v8:
Download from github.com/v8/v8.git
Should be the newest version
Able to build libv8.dylib into ./out/native
Able to build and run HelloWorld program from v8 official website using:
g++ -I./ ./samples/HelloWorld.cc –
o ./samples/HelloWorld ./out/native/libv8.dylib
Problem:
Write three files sample_func.h sample_wrapper.h and sample_main.cc
in ./samples/sample_function as the attachments show.
Try to build sample_main.cc using:
g++ -I./ -I./include -I./src ./samples/sample_function/sample_main.cc -l
out/native/libv8.dylib
Error messages showed ups as below:
./samples/sample_function/sample_wrapper.h:13:15: error: type 'const
Arguments' does not provide a subscript operator
int x = args[0]->Uint32Value();
~~~~^~
./samples/sample_function/sample_wrapper.h:14:15: error: type 'const
Arguments' does not provide a subscript operator
int y = args[1]->Uint32Value();
~~~~^~
./samples/sample_function/sample_wrapper.h:15:38: error: too few arguments
to function call, expected 2, have 1
return Integer::New(sample_add(x,y));
~~~~~~~~~~~~ ^
./include/v8.h:2190:3: note: 'New' declared here
static Local<Integer> New(Isolate* isolate, int32_t value);
^
./samples/sample_function/sample_main.cc:7:17: warning: using directive
refers to implicitly-defined namespace 'std'
using namespace std;
^
./samples/sample_function/sample_main.cc:13:23: error: no member
named 'New' in 'v8::String'
global->Set(String::New("Add"), FunctionTemplate::New(Add));
~~~~~~~~^
1 warning and 4 errors generated.
Here class Arguments was declared in v8.h and I used the forward
declaration in sample_wrapper.h. I have no idea why the compiler can’t find
Argument definition.
If adding #include “src/arguments.h” into sample_wrapper.h, the problem
still exists.
Is it because of the include path problem?
I’ve already added ./include and ./src path to –I symbol so the compiler
should be able to find all .h files inside these two folders.
Do you have any comments on it?
Or could you please help to build my code in your own machine and see the
result?
Attachments:
sample_code.7z 588 bytes
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