1 # This file is part of NIT ( http://www.nitlanguage.org ).
3 # Copyright 2012 Jean Privat <jean@pryen.org>
5 # Licensed under the Apache License, Version 2.0 (the "License");
6 # you may not use this file except in compliance with the License.
7 # You may obtain a copy of the License at
9 # http://www.apache.org/licenses/LICENSE-2.0
11 # Unless required by applicable law or agreed to in writing, software
12 # distributed under the License is distributed on an "AS IS" BASIS,
13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 # See the License for the specific language governing permissions and
15 # limitations under the License.
17 # Metrics on the usage of explicit static types.
18 module static_types_metrics
23 redef class ToolContext
24 var static_types_metrics_phase
: Phase = new StaticTypesMetricsPhase(self, null)
27 private class StaticTypesMetricsPhase
29 redef fun process_mainmodule
(mainmodule
, given_mmodules
)
31 if not toolcontext
.opt_static_types
.value
and not toolcontext
.opt_all
.value
then return
32 compute_static_types_metrics
(toolcontext
.modelbuilder
)
36 # The job of this visitor is to resolve all types found
37 private class ATypeCounterVisitor
39 var modelbuilder
: ModelBuilder
40 var nclassdef
: AClassdef
42 var typecount
: Counter[MType]
46 if n
isa AAnnotation then return
48 if n
isa AType then do
49 var mclassdef
= self.nclassdef
.mclassdef
50 if mclassdef
== null then break
51 var mtype
= modelbuilder
.resolve_mtype
(mclassdef
, n
)
53 self.typecount
.inc
(mtype
)
60 # Visit the AST and print metrics on the usage of explicit static types.
61 fun compute_static_types_metrics
(modelbuilder
: ModelBuilder)
63 # Count each occurence of a specific static type
64 var typecount
= new Counter[MType]
66 # Visit all the source code to collect data
67 for nmodule
in modelbuilder
.nmodules
do
68 for nclassdef
in nmodule
.n_classdefs
do
69 var visitor
= new ATypeCounterVisitor(modelbuilder
, nclassdef
, typecount
)
70 visitor
.enter_visit
(nclassdef
)
75 print
"--- Metrics of the explitic static types ---"
76 print
"Total number of explicit static types: {typecount.sum}"
77 if typecount
.sum
== 0 then return
79 print
"Statistics of type usage:"
80 typecount
.print_summary
81 typecount
.print_elements
(10)