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User forums => Help => Topic started by: momocc on April 20, 2012, 03:18:12 am

Title: code complete cannot list the lua's function
Post by: momocc on April 20, 2012, 03:18:12 am

my codeblocks cannot list the functions of lua.
i try to find out the reason why codeblocks cannot do it.
i found that there is a small difference between lua's function declaration and our usual practice.

Usually, we define a function like this:

Code

void func();

???
but the defination in lua is:

Code

void (func)();

so, the code completion cannot recognize the functions..
if i remove the brackets, the code completion will list the function name correctly

Title: Re: code complete cannot list the lua's function
Post by: ollydbg on April 20, 2012, 03:30:30 am

Code::Blocks is a C/C++ IDE, and its codecompletion parser is also for C/C++ currently.
Lua language is not supported right now.

BTW: There is a FORTRAN codecompletion plugin for FORTRAN language. So we welcome user contribution for lua language. :)

Title: Re: code complete cannot list the lua's function
Post by: momocc on April 20, 2012, 06:09:47 am

Oh, the way i expressed has some wrong, i mean the code completion cannot list the functions of lua's C API.
i am doing a lua binding library for c++, so i often need to call the lua's C API to achieve some features :P

Title: Re: code complete cannot list the lua's function
Post by: ollydbg on April 20, 2012, 01:32:52 pm

Quote from: momocc on April 20, 2012, 06:09:47 am

Oh, the way i expressed has some wrong, i mean the code completion cannot list the functions of lua's C API.
i am doing a lua binding library for c++, so i often need to call the lua's C API to achieve some features :P

Still not clear about your idea. If you would like to show C API, should should have C code parsed by the CC's parser. Where is you C API declaration? Please give more details.

Title: Re: code complete cannot list the lua's function
Post by: jarod42 on April 20, 2012, 01:57:52 pm

Code

int (bar_not_visible)();
int bar_visible();

void foo()
{
    ba|Ctrl+Space
}

code completion (for ba ) suggests only bar_visible, and not bar_not_visible.

Title: Re: code complete cannot list the lua's function
Post by: ollydbg on April 20, 2012, 02:04:33 pm

Ok, does it a .c file?
Another question is:

Code

int (bar_not_visible)();

Do you think this is a valid C function declaration? I don't.

Title: Re: code complete cannot list the lua's function
Post by: Freem on April 20, 2012, 02:22:01 pm

It is an uncommon style, but I think it is valid.

In short, when you declare a callback, you declare a function pointer. So, a pointer which know the address of a function (I know that you perfectly know that, I am just going step by step to make things clear as best as I can).

For a classic variable, we use this:

Code

int foo;

For a classic pointer:

Code

int *pfoo;[code]

For function pointers:
[code]int (*pbar)(void);

So there are no reasons to think removing the pointer operand is not legal.
In fact, we could probably say that removing parenthesis is just a shortcut for easier read, and the parenthesis write is the good one.

To conclude, I have tried a very little program (which do nothing) and compiled it with "gcc foo.c -ansi" and it gaves me no error or warning.
Here it is:

Code

int (bar_not_v)();
int (bar_v)();

void main()
{
	bar_v();
	bar_not_v();
}

int bar_not_v()
{
}

int (bar_v)()
{
}

[/code][/code]

Title: Re: code complete cannot list the lua's function
Post by: momocc on April 20, 2012, 06:51:18 pm

Quote from: ollydbg on April 20, 2012, 01:32:52 pm

Quote from: momocc on April 20, 2012, 06:09:47 am

Oh, the way i expressed has some wrong, i mean the code completion cannot list the functions of lua's C API.
i am doing a lua binding library for c++, so i often need to call the lua's C API to achieve some features :P

Still not clear about your idea. If you would like to show C API, should should have C code parsed by the CC's parser. Where is you C API declaration? Please give more details.

the C API declarations are in the Lua's header files
for example:

Code

// in lua.h
LUA_API lua_State *(lua_newstate) (lua_Alloc f, void *ud);