[nit.git] / src / metrics / mclasses_metrics.nit

# This file is part of NIT ( http://www.nitlanguage.org ).
#
# Copyright 2014 Alexandre Terrasa <alexandre@moz-code.org>
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Collect common metrics about mclasses
module mclasses_metrics

import metrics_base
import model::model_collect

redef class ToolContext

        # MClass related metrics phase
        var mclasses_metrics_phase: Phase = new MClassesMetricsPhase(self, null)
end

# Extract metrics about mclasses from model.
private class MClassesMetricsPhase
        super Phase
        redef fun process_mainmodule(mainmodule, given_mmodules)
        do
                if not toolcontext.opt_mclasses.value and not toolcontext.opt_all.value then return
                var csv = toolcontext.opt_csv.value
                var out = "{toolcontext.opt_dir.value or else "metrics"}/mclasses"
                out.mkdir

                var model = toolcontext.modelbuilder.model
                var model_view = model.private_view

                print toolcontext.format_h1("\n# MClasses metrics")

                var metrics = new MetricSet
                metrics.register(new CNOA(mainmodule, model_view))
                metrics.register(new CNOP(mainmodule, model_view))
                metrics.register(new CNOC(mainmodule, model_view))
                metrics.register(new CNOD(mainmodule, model_view))
                metrics.register(new CDIT(mainmodule, model_view))
                metrics.register(new CNBP(mainmodule, model_view))
                metrics.register(new CNBA(mainmodule, model_view))
                metrics.register(new CNBI(mainmodule, model_view))
                metrics.register(new CNBM(mainmodule, model_view))
                metrics.register(new CNBV(mainmodule, model_view))
                metrics.register(new CNBIP(mainmodule, model_view))
                metrics.register(new CNBRP(mainmodule, model_view))
                metrics.register(new CNBHP(mainmodule, model_view))

                var mclasses = new HashSet[MClass]
                for mpackage in model.mpackages do

                        print toolcontext.format_h2("\n ## package {mpackage}")

                        for mgroup in mpackage.mgroups do
                                if mgroup.mmodules.is_empty then continue
                                metrics.clear

                                # Scalar metrics
                                print toolcontext.format_h3("  `- group {mgroup.full_name}")
                                var mod_mclasses = new HashSet[MClass]
                                for mmodule in mgroup.mmodules do mod_mclasses.add_all(mmodule.intro_mclasses)
                                if mod_mclasses.is_empty then continue
                                mclasses.add_all(mod_mclasses)
                                metrics.collect(new HashSet[MClass].from(mod_mclasses))
                                metrics.to_console(1, not toolcontext.opt_nocolors.value)
                                if csv then metrics.to_csv.write_to_file("{out}/{mgroup}.csv")
                        end
                end
                if not mclasses.is_empty then
                        metrics.clear
                        # Global metrics
                        print toolcontext.format_h2("\n ## global metrics")
                        metrics.collect(mclasses)
                        metrics.to_console(1, not toolcontext.opt_nocolors.value)
                        if csv then metrics.to_csv.write_to_file("{out}/summary.csv")
                end
        end
end

# A metric about MClass
abstract class MClassMetric
        super Metric
        redef type ELM: MClass

        # Main module used for class linearization
        var mainmodule: MModule

        # Model view used to collect and filter entities
        var model_view: ModelView
end

# Class Metric: Number of Ancestors
class CNOA
        super MClassMetric
        super IntMetric
        redef fun name do return "cnoa"
        redef fun desc do return "number of ancestor classes"

        redef fun collect(mclasses) do
                for mclass in mclasses do
                        values[mclass] = mclass.in_hierarchy(mainmodule).greaters.length - 1
                end
        end
end

# Class Metric: Number of Parents
class CNOP
        super MClassMetric
        super IntMetric
        redef fun name do return "cnop"
        redef fun desc do return "number of parent classes"

        redef fun collect(mclasses) do
                for mclass in mclasses do
                        values[mclass] = mclass.in_hierarchy(mainmodule).direct_greaters.length
                end
        end
end

# Class Metric: Number of Children
class CNOC
        super MClassMetric
        super IntMetric
        redef fun name do return "cnoc"
        redef fun desc do return "number of child classes"

        redef fun collect(mclasses) do
                for mclass in mclasses do
                        values[mclass] = mclass.in_hierarchy(mainmodule).direct_smallers.length
                end
        end
end

# Class Metric: Number of Descendants
class CNOD
        super MClassMetric
        super IntMetric
        redef fun name do return "cnod"
        redef fun desc do return "number of descendant classes"

        redef fun collect(mclasses) do
                for mclass in mclasses do
                        values[mclass] = mclass.in_hierarchy(mainmodule).smallers.length - 1
                end
        end
end

# Class Metric: Depth in Inheritance Tree
class CDIT
        super MClassMetric
        super IntMetric
        redef fun name do return "cdit"
        redef fun desc do return "depth in class tree"

        redef fun collect(mclasses) do
                for mclass in mclasses do
                        values[mclass] = mclass.in_hierarchy(mainmodule).depth
                end
        end
end

# Class Metric: Number of MProperties
class CNBP
        super MClassMetric
        super IntMetric
        redef fun name do return "cnbp"
        redef fun desc do return "number of accessible properties (inherited + local)"

        redef fun collect(mclasses) do
                for mclass in mclasses do
                        values[mclass] = mclass.collect_accessible_mproperties(model_view).length
                end
        end
end

# Class Metric: Number of MAttributes
class CNBA
        super MClassMetric
        super IntMetric
        redef fun name do return "cnba"
        redef fun desc do return "number of accessible attributes (inherited + local)"

        redef fun collect(mclasses) do
                for mclass in mclasses do
                        values[mclass] = mclass.collect_accessible_mattributes(model_view).length
                end
        end
end

# Class Metric: Number of MMethods
class CNBM
        super MClassMetric
        super IntMetric
        redef fun name do return "cnbm"
        redef fun desc do return "number of accessible methods (inherited + local)"

        redef fun collect(mclasses) do
                for mclass in mclasses do
                        values[mclass] = mclass.collect_accessible_mmethods(model_view).length
                end
        end
end

# Class Metric: Number of Constructors
class CNBI
        super MClassMetric
        super IntMetric
        redef fun name do return "cnbi"
        redef fun desc do return "number of accessible constructors (inherited + local)"

        redef fun collect(mclasses) do
                for mclass in mclasses do
                        values[mclass] = mclass.collect_accessible_inits(model_view).length
                end
        end
end

# Class Metric: Number of Virtual Types
class CNBV
        super MClassMetric
        super IntMetric
        redef fun name do return "cnbv"
        redef fun desc do return "number of accessible virtual types (inherited + local)"

        redef fun collect(mclasses) do
                for mclass in mclasses do
                        values[mclass] = mclass.collect_accessible_vts(model_view).length
                end
        end
end

# Class Metric: Number of Introduced MProperties
class CNBIP
        super MClassMetric
        super IntMetric
        redef fun name do return "cnbip"
        redef fun desc do return "number of introduced properties"

        redef fun collect(mclasses) do
                for mclass in mclasses do
                        values[mclass] = mclass.collect_intro_mproperties(model_view).length
                end
        end
end

# Class Metric: Number of Refined MProperties
class CNBRP
        super MClassMetric
        super IntMetric
        redef fun name do return "cnbrp"
        redef fun desc do return "number of redefined properties"

        redef fun collect(mclasses) do
                for mclass in mclasses do
                        values[mclass] = mclass.collect_redef_mproperties(model_view).length
                end
        end
end

# Class Metric: Number of Inherited MProperties
class CNBHP
        super MClassMetric
        super IntMetric
        redef fun name do return "cnbhp"
        redef fun desc do return "number of inherited properties"

        redef fun collect(mclasses) do
                for mclass in mclasses do
                        values[mclass] = mclass.collect_inherited_mproperties(model_view).length
                end
        end
end

# Class Metric: Number of Local MProperties (Intro + Redef)
class CNBLP
        super MClassMetric
        super IntMetric
        redef fun name do return "cnblp"
        redef fun desc do return "number of local properties (intro + redef)"

        redef fun collect(mclasses) do
                for mclass in mclasses do
                        values[mclass] = mclass.collect_local_mproperties(model_view).length
                end
        end
end