gecko-dev/layout/analysis/simple-match.js
2012-05-21 12:12:37 +01:00

44 lines
1.6 KiB
JavaScript

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
// This executes a very simple search for all functions that call a
// given set of functions. It's intended to be the simplest possible
// way of refactoring a common pattern of function calls. Of course,
// it's still up to a human to decide if the replacement is truely
// suitable, but this gets the low-hanging fruit.
// Expects the variable 'patterns' to hold an object with replacement
// function names as keys and function lists as values. Any function
// in the tested source that calls all of the functions named in the
// list will be listed in the output as being likely candidates to
// instead call the replacement function.
include("unstable/lazy_types.js");
var matches = {};
function identity(x) x;
function process_cp_pre_genericize(fndecl)
{
var c = [];
function calls(t, stack)
{
try {
t.tree_check(CALL_EXPR);
var fn = callable_arg_function_decl(CALL_EXPR_FN(t));
if (fn)
c.push(decl_name_string(fn));
}
catch (e if e.TreeCheckError) { }
}
walk_tree(DECL_SAVED_TREE(fndecl), calls);
for (let [fnreplace, pattern] in patterns)
if (pattern.map(function(e){ return c.some(function(f) { return e == f; }); }).every(identity))
if (fnreplace != (n = decl_name_string(fndecl)))
print(fnreplace +" could probably be used in "+ n);
}