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 about the nodes and identifiers in the AST
21 redef class ToolContext
22 var ast_metrics_phase
: Phase = new AstMetricsPhase(self, null)
25 private class AstMetricsPhase
27 var node_counter
= new Counter[String]
28 var id_counter
= new Counter[String]
30 redef fun process_mainmodule
(mainmodule
, given_mmodules
)
32 if not toolcontext
.opt_ast
.value
and not toolcontext
.opt_all
.value
then return
33 print
"--- AST Metrics ---"
34 # Visit all the source code to collect data
35 var visitor
= new AstMetricsVisitor(self)
36 for nmodule
in toolcontext
.modelbuilder
.nmodules
do
37 visitor
.enter_visit
(nmodule
)
39 print
"## All nodes of the AST"
40 node_counter
.print_summary
41 node_counter
.print_elements
(10)
42 print
"## All identifiers of the AST"
43 id_counter
.print_summary
44 id_counter
.print_elements
(10)
48 private class AstMetricsVisitor
51 var phase
: AstMetricsPhase
52 init(phase
: AstMetricsPhase) do self.phase
= phase
57 phase
.node_counter
.inc
(n
.class_name
)
58 if n
isa TId or n
isa TAttrid or n
isa TClassid then
60 phase
.id_counter
.inc
(n
.text
)