/*
 * Copyright 2019, TeamDev. All rights reserved.
 *
 * Redistribution and use in source and/or binary forms, with or without
 * modification, must retain the above copyright notice and the following
 * disclaimer.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package io.spine.tools.protoc.method;

import com.google.common.collect.ImmutableList;
import io.spine.code.proto.MessageType;
import io.spine.code.proto.Type;
import io.spine.tools.protoc.CompilerOutput;
import io.spine.tools.protoc.GeneratedMethodsConfig;
import io.spine.tools.protoc.SpineProtoGenerator;
import io.spine.tools.protoc.SpineProtocConfig;

import java.util.Collection;

/**
 * The {@link SpineProtoGenerator} implementation generating additional message methods.
 *
 * <p>The generator produces {@link CompilerOutput compiler output} that fits into the message's
 * {@link io.spine.tools.protoc.InsertionPoint#CLASS_SCOPE class scope} insertion point.
 */
public class GeneratedMethodGenerator extends SpineProtoGenerator {

    private final OptionsScanner optionsScanner;

    private GeneratedMethodGenerator(GeneratedMethodsConfig config) {
        super();
        optionsScanner = new OptionsScanner(config);
    }

    /**
     * Retrieves the single instance of the {@code GeneratedMethodGenerator} type.
     */
    public static GeneratedMethodGenerator instance(SpineProtocConfig config) {
        return new GeneratedMethodGenerator(config.getGeneratedMethods());
    }

    @Override
    protected Collection<CompilerOutput> processType(Type<?, ?> type) {
        if (!(type instanceof MessageType)) {
            return ImmutableList.of();
        }
        ImmutableList<CompilerOutput> result = optionsScanner.scan((MessageType) type);
        return result;
    }

}

@@ -1796,16 +1796,65 @@
 Scanner;
+%0A    private final PatternScanner patternScanner;
 %0A%0A    pr
@@ -1987,16 +1987,69 @@
 onfig);%0A
+        patternScanner = new PatternScanner(config);%0A
     %7D%0A%0A 
@@ -2510,16 +2510,24 @@
 ableList
+.Builder
 %3CCompile
@@ -2544,16 +2544,117 @@
 esult = 
+ImmutableList.builder();%0A        MessageType messageType = (MessageType) type;%0A        result.addAll(
 optionsS
@@ -2665,18 +2665,17 @@
 er.scan(
-(M
+m
 essageTy
@@ -2677,22 +2677,74 @@
 ageType)
- t
+);%0A        result.addAll(patternScanner.scan(messageT
 ype)
+)
 ;%0A      
@@ -2758,16 +2758,24 @@
 n result
+.build()
 ;%0A    %7D%0A

Use Options and Patterns scanners