TaskFactories result is now included in BuildSpecUtil.toBuild. All tests passing.

api/src/main/groovy/com/jessebrault/ssg/buildscript/BuildSpecUtil.groovy

@@ -2,6 +2,8 @@ package com.jessebrault.ssg.buildscript
 
 import com.jessebrault.ssg.SiteSpec
 import com.jessebrault.ssg.buildscript.delegates.BuildDelegate
+import com.jessebrault.ssg.task.TaskFactory
+import com.jessebrault.ssg.task.TaskFactorySpec
 import com.jessebrault.ssg.util.Monoid
 import com.jessebrault.ssg.util.Monoids
 import com.jessebrault.ssg.util.Zero
@@ -19,6 +21,13 @@ final class BuildSpecUtil {
     private static final Marker enter = MarkerFactory.getMarker('ENTER')
     private static final Marker exit = MarkerFactory.getMarker('EXIT')
 
+    private static final Monoid<Map<String, Object>> globalsMonoid = Monoids.of([:]) { m0, m1 ->
+        m0 + m1
+    }
+
+    private static final Monoid<Collection<TaskFactorySpec<TaskFactory>>> taskFactoriesMonoid =
+            Monoids.getMergeCollectionMonoid(TaskFactorySpec.SAME_NAME_AND_SUPPLIER_EQ, TaskFactorySpec.DEFAULT_SEMIGROUP)
+
     private static <T> T reduceResults(
             Collection<BuildDelegate.Results> resultsCollection,
             Zero<T> tZero,
@@ -40,12 +49,6 @@ final class BuildSpecUtil {
         }
     }
 
-    private static Monoid<Map<String, Object>> getGlobalsMonoid() {
-        Monoids.of([:]) { m0, m1 ->
-            m0 + m1
-        }
-    }
-
     private static Build toBuild(
             Collection<BuildSpec> specs
     ) {
@@ -59,15 +62,26 @@ final class BuildSpecUtil {
         def siteSpecResult = reduceResults(allResults, SiteSpec.DEFAULT_MONOID) { acc, r ->
             r.getSiteSpecResult(acc, true, SiteSpec.DEFAULT_MONOID)
         }
-        def globalsResult = reduceResults(allResults, getGlobalsMonoid()) { acc, r ->
-            r.getGlobalsResult(acc, true, getGlobalsMonoid())
+        def globalsResult = reduceResults(allResults, globalsMonoid) { acc, r ->
+            r.getGlobalsResult(acc, true, globalsMonoid)
         }
+
+        def typesResult = reduceResults(allResults, TypesContainer.DEFAULT_MONOID) { acc, r ->
+            r.getTypesResult(acc, true, TypesContainer.DEFAULT_MONOID)
+        }
+        def sourcesResult = reduceResults(allResults, SourceProviders.DEFAULT_MONOID) { acc, r ->
+            r.getSourcesResult(acc, true, SourceProviders.DEFAULT_MONOID, typesResult)
+        }
+        def taskFactoriesResult = reduceResults(allResults, taskFactoriesMonoid) { acc, r ->
+            r.getTaskFactoriesResult(acc, true, taskFactoriesMonoid, sourcesResult)
+        }
+
         new Build(
                 specs[0].name,
                 outputDirFunctionResult,
                 siteSpecResult,
                 globalsResult,
-                [] // TODO
+                taskFactoriesResult
         )
     }
 

api/src/main/groovy/com/jessebrault/ssg/task/TaskFactorySpec.groovy

@@ -1,5 +1,7 @@
 package com.jessebrault.ssg.task
 
+import com.jessebrault.ssg.util.Eq
+import com.jessebrault.ssg.util.Eqs
 import com.jessebrault.ssg.util.Semigroup
 import com.jessebrault.ssg.util.Semigroups
 import groovy.transform.EqualsAndHashCode
@@ -17,7 +19,9 @@ import java.util.function.Supplier
 @EqualsAndHashCode
 final class TaskFactorySpec<T extends TaskFactory> {
 
-    static Semigroup<TaskFactorySpec<TaskFactory>> DEFAULT_SEMIGROUP = Semigroups.of(TaskFactorySpec::concat)
+    static final Semigroup<TaskFactorySpec<TaskFactory>> DEFAULT_SEMIGROUP = Semigroups.of(TaskFactorySpec::concat)
+
+    static final Eq<TaskFactorySpec<TaskFactory>> SAME_NAME_AND_SUPPLIER_EQ = Eqs.of(TaskFactorySpec::areSame)
 
     static <T extends TaskFactory> TaskFactorySpec<T> concat(TaskFactorySpec<T> spec0, TaskFactorySpec<T> spec1) {
         if (spec0.name != spec1.name) {
@@ -29,6 +33,10 @@ final class TaskFactorySpec<T extends TaskFactory> {
         new TaskFactorySpec(spec0.name, spec0.supplier, spec0.configurators + spec1.configurators)
     }
 
+    static boolean areSame(TaskFactorySpec<TaskFactory> spec0, TaskFactorySpec<TaskFactory> spec1) {
+        spec0.name == spec1.name && spec0.supplier == spec1.supplier
+    }
+
     final String name
     final Supplier<T> supplier
     final Collection<Consumer<T>> configurators

api/src/main/groovy/com/jessebrault/ssg/util/Eq.groovy

@@ -0,0 +1,7 @@
+package com.jessebrault.ssg.util
+
+import java.util.function.BiPredicate
+
+interface Eq<T> {
+    BiPredicate<T, T> getAreEqual()
+}

api/src/main/groovy/com/jessebrault/ssg/util/Eqs.groovy

@@ -0,0 +1,11 @@
+package com.jessebrault.ssg.util
+
+import java.util.function.BiPredicate
+
+final class Eqs {
+
+    static <T> Eq<T> of(BiPredicate<T, T> areEqual) {
+        new SimpleEq<>(areEqual)
+    }
+
+}

api/src/main/groovy/com/jessebrault/ssg/util/Monoids.groovy

@@ -11,6 +11,23 @@ final class Monoids {
         new SimpleMonoid<>(zero, concat)
     }
 
+    static <T> Monoid<Collection<T>> getMergeCollectionMonoid(Eq<T> tEq, Semigroup<T> tSemigroup) {
+        new SimpleMonoid<>([], { Collection<T> c0, Collection<T> c1 ->
+            def r = [] as Collection<T>
+            r.addAll(c0)
+            c1.each { T t ->
+                def sameT = r.find { tEq.areEqual.test(it, t) }
+                if (sameT != null) {
+                    r.remove(sameT)
+                    r << tSemigroup.concat.apply(sameT, t)
+                } else {
+                    r << t
+                }
+            }
+            r
+        })
+    }
+
     private Monoids() {}
 
 }

api/src/main/groovy/com/jessebrault/ssg/util/SimpleEq.groovy

@@ -0,0 +1,16 @@
+package com.jessebrault.ssg.util
+
+import groovy.transform.EqualsAndHashCode
+import groovy.transform.NullCheck
+import groovy.transform.PackageScope
+import groovy.transform.TupleConstructor
+
+import java.util.function.BiPredicate
+
+@PackageScope
+@TupleConstructor(defaults = false)
+@NullCheck(includeGenerated = true)
+@EqualsAndHashCode
+final class SimpleEq<T> implements Eq<T> {
+    final BiPredicate<T, T> areEqual
+}

api/src/test/resources/oneTextAndTemplate.groovy

@@ -1,20 +1,23 @@
 import com.jessebrault.ssg.buildscript.Build
 import com.jessebrault.ssg.buildscript.BuildScriptBase
 import com.jessebrault.ssg.buildscript.OutputDir
-import com.jessebrault.ssg.html.TextToHtmlSpec
+import com.jessebrault.ssg.html.TextToHtmlSpecProviders
 import com.jessebrault.ssg.html.TextToHtmlTaskFactory
-import com.jessebrault.ssg.provider.CollectionProviders
 import com.jessebrault.ssg.template.TemplateTypes
 import com.jessebrault.ssg.template.TemplatesProviders
 import com.jessebrault.ssg.text.TextTypes
 import com.jessebrault.ssg.text.TextsProviders
-import com.jessebrault.ssg.util.ExtensionUtil
-import com.jessebrault.ssg.util.Result
 import groovy.transform.BaseScript
 
 @BaseScript
 BuildScriptBase b
 
+final class Args {
+    File sourceDir
+}
+
+def args = args as Args
+
 build(name: 'test') {
     outputDirFunction = { Build build -> new OutputDir(new File(args.sourceDir, 'build')) }
 
@@ -22,27 +25,15 @@ build(name: 'test') {
         textTypes << TextTypes.MARKDOWN
         templateTypes << TemplateTypes.GSP
     }
+
     sources { base, types ->
         texts TextsProviders.from(new File(args.sourceDir, 'texts'), types.textTypes)
         templates TemplatesProviders.from(new File(args.sourceDir, 'templates'), types.templateTypes)
     }
+
     taskFactories { base, sources ->
         register('textToHtml', TextToHtmlTaskFactory::new) {
-            it.specProvider += CollectionProviders.fromSupplier {
-                def templates = sources.templatesProvider.provide()
-                return sources.textsProvider.provide().collect {
-                    def frontMatterResult = it.type.frontMatterGetter.get(it)
-                    if (frontMatterResult.hasDiagnostics()) {
-                        return Result.ofDiagnostics(frontMatterResult.diagnostics)
-                    }
-                    def desiredTemplate = frontMatterResult.get().get('template')
-                    def template = templates.find { it.path == desiredTemplate }
-                    if (template == null) {
-                        throw new IllegalArgumentException('template is null')
-                    }
-                    return Result.of(new TextToHtmlSpec(it, template, ExtensionUtil.stripExtension(it.path) + '.html'))
-                }
-            }
+            it.specProvider += TextToHtmlSpecProviders.from(sources)
         }
     }
 }

api/src/testFixtures/groovy/com/jessebrault/ssg/util/FileAssertions.groovy

@@ -9,7 +9,7 @@ import static org.junit.jupiter.api.Assertions.assertEquals
 
 final class FileAssertions {
 
-    private static final Logger logger = LoggerFactory.getLogger(ResourceUtil)
+    private static final Logger logger = LoggerFactory.getLogger(FileAssertions)
 
     private static Map<String, Object> fileToMap(File file) {
         [