Move Bazel WORKSPACE to the root directory. (#440)

- The Bazel workspace should generally be the root. This is what we want for building the docs (#429) or the whole project (#304)
- This allows to reference the jflex.jar and the cup.jar directly; the Bazel script doesn't have to copy them anymore.

README.md

@@ -30,6 +30,7 @@ The top level directory of the JFLex git repository contains:
  * **jflex-maven-plugin** the JFlex maven plugin, that helps to integrate JFlex in your project
  * **jflex-unicode-plugin** the JFlex unicode maven plugin, used for compiling JFlex
  * **testsuite** the regression test suite for JFlex,
+ * **third_party** third-party librairies used by examples of the [Bazel build system][bazel]
 
 
 ## Usage
@@ -132,3 +133,4 @@ See the [Contributing][contrib] page for instructions.
 [example-simple]: https://github.com/jflex-de/jflex/tree/master/jflex/examples/simple
 [examples]: https://github.com/jflex-de/jflex/tree/master/jflex/examples/
 [contrib]: https://github.com/jflex-de/jflex/wiki/Contributing
+[bazel]: http://bazel.build/

cup/BUILD

@@ -0,0 +1,13 @@
+package(default_visibility = ["//visibility:public"])
+
+licenses(["notice"])  # GPL-compatible
+
+java_import(
+    name = "cup",
+    jars = ["cup/target/cup-11b.jar"],
+)
+
+java_import(
+    name = "cup_runtime",
+    jars = ["cup_runtime/target/cup_runtime-11b.jar"],
+)

jflex/BUILD

@@ -0,0 +1,15 @@
+package(default_visibility = ["//visibility:public"])
+
+java_binary(
+    name = "jflex_bin",
+    main_class = "jflex.Main",
+    runtime_deps = [
+        ":jflex",
+        "//cup:cup_runtime",
+    ],
+)
+
+java_import(
+    name = "jflex",
+    jars = ["target/jflex-1.7.1-SNAPSHOT.jar"],
+)

jflex/examples/simple/BUILD

@@ -19,11 +19,12 @@ java_library(
     name = "simple",
     # glob is not a best practice, but it's good enough for this example
     srcs = glob(["src/main/java/**/*.java"]) + [":gen_lexer"],
+    deps = ["//cup:cup_runtime"],
 )
 
 jflex(
     name = "gen_lexer",
     srcs = ["src/main/jflex/simple.flex"],
-    jflex_bin = "//:jflex_bin",
+    jflex_bin = "//jflex:jflex_bin",
     outputs = ["Yylex.java"],
 )

jflex/examples/simple/src/test/BUILD

@@ -6,7 +6,7 @@ java_test(
         "data/test.txt",
     ],
     deps = [
-        "//simple",
+        "//jflex/examples/simple",
         "//third_party/com/google/truth",
     ],
 )

jflex/examples/simple/src/test/java/YylexTest.java

@@ -84,7 +84,7 @@ private File openFile(String pathName) throws IOException {
     File pwd = new File(".").getCanonicalFile();
     assertThat(pwd.isDirectory()).isTrue();
     if (Objects.equal(pwd.getName(), "__main__")) {
-      path = "simple/" + path;
+      path = "jflex/examples/simple/" + path;
     }
     File file = new File(path);
     if (!file.isFile()) {

scripts/bazel.sh

@@ -14,12 +14,6 @@ else
   BAZEL='bazel'
 fi
 
-logi "Copy JFlex jar in examples"
-logi "=========================="
-# NB This will fail if there are multiple versions of the jflex jar.
-cp "$BASEDIR"/jflex/target/jflex-1.*.jar  "$BASEDIR"/jflex/examples/jflex.jar
-cp "$BASEDIR"/cup/cup_runtime/target/cup_runtime-*.jar  "$BASEDIR"/jflex/examples/cup_runtime.jar
-
 logi "Start Bazel"
 logi "==========="
 cd "$BASEDIR"/jflex/examples