Re: Using Semantic for Style Checking

On 09/10/2014 03:51 AM, Alex Murray wrote:
> Hi,
>
> I am trying to write a C style checker in Emacs using Semantic - firstly I just want to be able to check all variables within a file conform to a particular naming scheme.
>
> I am wanting to use Semantic to get the tags for all the variables within a file at all scopes but I can't seem to do this easily.
>
> (semantic-find-tags-by-class) only seems to return the variables in the global scope, so I was trying to use (semantic-fetch-tags) but this only returns variables within the current and all preceeding scopes - not ALL scopes within the buffer. Other than iterating through all positions within the buffer, I can't think of a good way to do this with my current understanding of semantic.
>
> Can anyone advise if this is possible (ie. to easily get all tags at all scopes within a buffer)?
>
> Any help would be greatly appreciated.

Hi,

The tags are all saved in a hierarchical order.  When scanning the tag 
lists there are 2 kinds of searches:

semantic-find-tags-by-class - finds all tags at the current level, which 
is the base of the file by default.

semantic-brute-find-tag-by-class - find all tags at the current level, 
and all tags that are children of some tag.

The -brute- functions all basically do a depth first search across the 
provided tags table.

These functions will NOT find local variables, for example:

int myfcn() {
    int cantfindme;
}

the cantfindme variable won't be found because semantic never parses 
stuff between the { } of the function.   If you want to do that you 
would need to:

1) find-tags-by-class 'function
2) visit each function (move point there)
3) semantic-get-local-variables

Good Luck
Eric

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