1 files changed, 101 insertions, 0 deletions
diff --git a/src/main/groovy/frege/gradle/FregeTask.groovy b/src/main/groovy/frege/gradle/FregeTask.groovy
new file mode 100644
index 0000000..fc3152d
--- /dev/null
+++ b/src/main/groovy/frege/gradle/FregeTask.groovy
@@ -0,0 +1,101 @@
+package frege.gradle
+
+import org.gradle.api.DefaultTask
+import org.gradle.api.tasks.*
+import org.gradle.process.internal.DefaultJavaExecAction
+import org.gradle.process.internal.JavaExecAction
+import org.gradle.api.internal.file.FileResolver
+import org.gradle.tooling.BuildException
+
+class FregeTask extends DefaultTask {
+
+    static String DEFAULT_CLASSES_SUBDIR = "classes/main"       // TODO: should this come from a convention?
+    static String DEFAULT_SRC_DIR        = "src/main/frege"     // TODO: should this come from a source set?
+
+    @Optional @Input
+    boolean hints = false
+
+    @Optional @Input
+    boolean verbose = false
+
+    @Optional @Input
+    boolean inline = true
+
+    @Optional @Input
+    boolean make = true
+
+    @Optional @Input
+    boolean skipCompile = false
+
+    @Optional @Input
+    String extraArgs = ""
+
+    @Optional @Input
+    String allArgs = "" // this is an option to overrule all other settings
+
+    @Optional @Input
+    String module = ""
+
+    @Optional @InputDirectory
+    File sourceDir = new File(project.projectDir, DEFAULT_SRC_DIR).exists() ?  new File(project.projectDir, DEFAULT_SRC_DIR) : null
+
+    @Optional @OutputDirectory
+    File outputDir = new File(project.buildDir, DEFAULT_CLASSES_SUBDIR)
+
+    @TaskAction
+    void executeCompile() {
+        if (! outputDir.exists() ) {
+            logger.info "Creating output directory '${outputDir.absolutePath}'."
+            outputDir.mkdirs()
+        }
+
+        // access extension configuration values as ${project.frege.key1}
+
+        FileResolver fileResolver = getServices().get(FileResolver.class)
+        JavaExecAction action = new DefaultJavaExecAction(fileResolver)
+        action.setMain("frege.compiler.Main")
+        action.setClasspath(project.files(project.configurations.compile))
+
+        def args = allArgs ? allArgs.split().toList() : assembleArguments()
+
+        logger.info("Calling Frege compiler with args: '$args'")
+        action.args(args)
+        action.execute()
+    }
+
+    protected List assembleArguments() {
+        List args = []
+        if (hints)
+            args << "-hints"
+        if (inline)
+            args << "-inline"
+        if (make)
+            args << "-make"
+        if (verbose)
+            args << "-v"
+        if (skipCompile)
+            args << "-j"
+
+        if (sourceDir != null) {
+            args << "-sp"
+            args << sourceDir.absolutePath
+        }
+
+        args << "-d"
+        args << outputDir
+
+        if (!module && !extraArgs) {
+            logger.info "no module and no extra args given: compiling all of the sourceDir"
+            if (sourceDir != null) {
+                args << sourceDir.absolutePath
+            }
+
+        } else if (module) {
+            logger.info "compiling module '$module'"
+            args << module
+        } else {
+            args = args + extraArgs.split().toList()
+        }
+        args
+    }
+}
+\ No newline at end of file