From ecc5fd3f0bd1be9a74278912d5a15985410e32e9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?St=C3=A9phane=20Galland?= <galland@arakhne.org>
Date: Sun, 19 Aug 2018 18:19:12 +0200
Subject: [PATCH] [lang] Add optimization level parameter to the SARL batch
 compiler.
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Signed-off-by: Stéphane Galland <galland@arakhne.org>
---
 .../compiler/batch/OptimizationLevel.java     | 83 +++++++++++++++++++
 .../compiler/batch/SarlBatchCompiler.java     | 23 +++++
 2 files changed, 106 insertions(+)
 create mode 100644 main/coreplugins/io.sarl.lang/src/io/sarl/lang/compiler/batch/OptimizationLevel.java

diff --git a/main/coreplugins/io.sarl.lang/src/io/sarl/lang/compiler/batch/OptimizationLevel.java b/main/coreplugins/io.sarl.lang/src/io/sarl/lang/compiler/batch/OptimizationLevel.java
new file mode 100644
index 0000000000..6b1b9decdb
--- /dev/null
+++ b/main/coreplugins/io.sarl.lang/src/io/sarl/lang/compiler/batch/OptimizationLevel.java
@@ -0,0 +1,83 @@
+/*
+ * $Id$
+ *
+ * SARL is an general-purpose agent programming language.
+ * More details on http://www.sarl.io
+ *
+ * Copyright (C) 2014-2018 the original authors or authors.
+ *
+ * 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.
+ */
+
+package io.sarl.lang.compiler.batch;
+
+import com.google.common.base.Strings;
+
+/** Level of optimization of the Java code.
+ *
+ * @author $Author: sgalland$
+ * @version $FullVersion$
+ * @mavengroupid $GroupId$
+ * @mavenartifactid $ArtifactId$
+ * @since 0.8
+ */
+public enum OptimizationLevel {
+
+	/**
+	 * No optimization, debugging information included.
+	 */
+	G0,
+
+	/**
+	 * No optimization, no debugging information included.
+	 */
+	G1,
+
+	/**
+	 * Optimization, no debugging information included.
+	 */
+	G2;
+
+	/** Replies the default optimization level.
+	 *
+	 * @return the default optimization level.
+	 */
+	public static OptimizationLevel getDefault() {
+		return G0;
+	}
+
+	/** Parse the given case insensitive string for obtaining the optimization level.
+	 *
+	 * @param name the string to parse.
+	 * @return the optimization level, or {@code null} if the string cannot be parsed.
+	 */
+	public static OptimizationLevel valueOfCaseInsensitive(String name) {
+		if (Strings.isNullOrEmpty(name)) {
+			return null;
+		}
+		try {
+			return valueOf(name.toUpperCase());
+		} catch (Exception exception) {
+			return null;
+		}
+	}
+
+	/** Replies the string representation of this optimization level.
+	 *
+	 * @return the string representation.
+	 */
+	public String getCaseInsensitiveName() {
+		return name().toLowerCase();
+	}
+
+}
diff --git a/main/coreplugins/io.sarl.lang/src/io/sarl/lang/compiler/batch/SarlBatchCompiler.java b/main/coreplugins/io.sarl.lang/src/io/sarl/lang/compiler/batch/SarlBatchCompiler.java
index 903b7857c6..74a8c4d5f4 100644
--- a/main/coreplugins/io.sarl.lang/src/io/sarl/lang/compiler/batch/SarlBatchCompiler.java
+++ b/main/coreplugins/io.sarl.lang/src/io/sarl/lang/compiler/batch/SarlBatchCompiler.java
@@ -254,6 +254,8 @@ public boolean accept(File pathname) {
 
 	private boolean reportInternalProblemsAsIssues;
 
+	private OptimizationLevel optimizationLevel;
+
 	/** Constructor the batch compiler.
 	 */
 	public SarlBatchCompiler() {
@@ -305,6 +307,27 @@ public IJavaBatchCompiler getJavaCompiler() {
 		return this.javaCompiler;
 	}
 
+	/** Change the optimization level that should be applied to the generated Java byte code.
+	 *
+	 * @param level the optimization level.
+	 * @since 0.8
+	 */
+	public void setOptimizationLevel(OptimizationLevel level) {
+		this.optimizationLevel = level;
+	}
+
+	/** Replies the optimization level that should be applied to the generated Java byte code.
+	 *
+	 * @return the optimization level.
+	 * @since 0.8
+	 */
+	public OptimizationLevel getOptimizationLevel() {
+		if (this.optimizationLevel == null) {
+			this.optimizationLevel = OptimizationLevel.getDefault();
+		}
+		return this.optimizationLevel;
+	}
+
 	/** Change the flag that permits to report the compiler's internal problems as issues.
 	 *
 	 * @param reportAsIssues {@code true} if the internal errors are reported as issues.