Merge dev branch

.bazelrc

@@ -0,0 +1 @@
+build --javacopt="--release 8"

.travis.yml

@@ -1,4 +1,4 @@
-dist: xenial
+dist: bionic
 
 addons:
   apt:
@@ -13,7 +13,9 @@ script:
   - cd examples
   # build examples as a means of testing
   - bazel build --jobs 2 //antlr2/Cpp/... //antlr2/Calc/... //antlr2/Python/... //antlr3/Cpp/... //antlr3/Java/... //antlr3/Python2/... //antlr3/Python3/... //antlr4/Cpp/... //antlr4/Go/... //antlr4/Java/... //antlr4/Python2/... //antlr4/Python3/...
-  - cd ..
+  - cd antlr4-opt
+  - bazel build --jobs 2 //...
+  - cd ../..
   - bazel test --jobs 2 --test_output=errors //...
   - bazel shutdown
 

README.md

@@ -6,13 +6,31 @@
 # ANTLR Rules for Bazel
 
 These build rules are used for processing [ANTLR](https://www.antlr.org)
-grammars with [Bazel](https://bazel.build/). Currently C/C++, Go, Java and Python targets are supported.
+grammars with [Bazel](https://bazel.build/).
 
+  * [Support Matrix](#matrix)
   * [Workspace Setup](#setup)
     + [Details](docs/setup.md#setup)
   * [Build Rules](#build-rules)
     - [Java Example](#java-example)
 
+<a name="matrix"></a>
+## Support Matrix
+
+|         | antlr4        | antlr3        | antlr2
+|---------|:-------------:|:-------------:|:----:|
+| C       |               | Gen           | Gen
+| C++     | Gen + Runtime | Gen + Runtime | Gen + Runtime
+| Go      | Gen + Runtime |               |
+| Java    | Gen + Runtime | Gen + Runtime | Gen + Runtime
+| ObjC    |               | Gen           |
+| Python2 | Gen + Runtime | Gen + Runtime | Gen + Runtime
+| Python3 | Gen + Runtime | Gen + Runtime |
+
+Gen: Code Generation\
+Runtime: Runtime Library bundled
+
+
 <a name="setup"></a>
 ## Setup
 
@@ -25,13 +43,13 @@ load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
 http_archive(
     name = "rules_antlr",
-    sha256 = "f7c73e1fe3d3b1be3b65172da756a326d12100f6a8d1ef8327498705c0d52efc",
-    strip_prefix = "rules_antlr-0.4.0",
-    urls = ["https://github.com/marcohu/rules_antlr/archive/0.4.0.tar.gz"],
+    sha256 = "",
+    strip_prefix = "rules_antlr-0.5.0",
+    urls = ["https://github.com/marcohu/rules_antlr/archive/0.5.0.tar.gz"],
 )
 
 load("@rules_antlr//antlr:repositories.bzl", "rules_antlr_dependencies")
-rules_antlr_dependencies("4.7.2")
+rules_antlr_dependencies("4.8")
 ```
 
 More detailed instructions can be found in the [Setup](docs/setup.md#setup) document.

antlr/impl.bzl

@@ -1,12 +1,12 @@
 """The common ANTLR rule implementation."""
 
-load(":lang.bzl", "C", "CPP", "GO", "PYTHON", "PYTHON2", "PYTHON3")
+load(":lang.bzl", "C", "CPP", "GO", "OBJC", "PYTHON", "PYTHON2", "PYTHON3")
 
 AntlrInfo = provider(
     fields = {
         "sources": "The generated source files.",
-        "headers": "For C/C++ the generated header files.",
-        "data": "Additional ANTLR data files",
+        "headers": "The generated header files (for C/C++/ObjC).",
+        "data": "Additional ANTLR data files.",
     },
     doc = "A provider containing information about ANTLR code generation.",
 )
@@ -31,7 +31,7 @@ def antlr(version, ctx, args):
     data = []
     sources = []
     headers = []
-    cc = ctx.attr.language == CPP or ctx.attr.language == C
+    cc = ctx.attr.language == CPP or ctx.attr.language == C or ctx.attr.language == OBJC
     output_type = "dir" if ctx.attr.language and ctx.attr.language != "Java" else "srcjar"
 
     if output_type == "srcjar":
@@ -71,6 +71,7 @@ def antlr(version, ctx, args):
             "OUTPUT_DIRECTORY": output_dir,
             "PACKAGE_NAME": ctx.attr.package,
             "SRC_JAR": srcjar.path if srcjar else "",
+            "TARGET": ctx.attr.name,
             "TARGET_LANGUAGE": ctx.attr.language,
             "TOOL_CLASSPATH": ",".join([f.path for f in tool_inputs]),
         },
@@ -89,9 +90,6 @@ def antlr(version, ctx, args):
             headers = headers,
             data = [ctx.attr.name + ".antlr"],
         ),
-        platform_common.TemplateVariableInfo({
-            "INCLUDES": ctx.attr.name + ".inc/" + ctx.attr.package,
-        }),
         CcInfo(compilation_context = compilation_context) if cc else _NullInfo(),
         DefaultInfo(files = depset(outputs)),
     ]
@@ -106,10 +104,12 @@ def extension(language):
     """
     if language == CPP or language == C:
         return ".cc"
-    if language == PYTHON or language == PYTHON2 or language == PYTHON3:
-        return ".py"
     if language == GO:
         return ".go"
+    if language == OBJC:
+        return ".objc"
+    if language == PYTHON or language == PYTHON2 or language == PYTHON3:
+        return ".py"
     return ""
 
 def lib_dir(imports):
@@ -122,7 +122,10 @@ def lib_dir(imports):
     """
     lib = {}
     for resource in imports:
-        lib[resource.path.replace("/" + resource.basename, "")] = None
+        if resource.path.endswith(".srcjar"):
+            lib[resource.path] = None
+        else:
+            lib[resource.path.replace("/" + resource.basename, "")] = None
     count = len(lib)
 
     # the lib directory does not allow nested directories

antlr/lang.bzl

@@ -4,6 +4,7 @@ CSHARP = "CSharp"
 GO = "Go"
 JAVA = "Java"
 JAVASCRIPT = "JavaScript"
+OBJC = "ObjC"
 PYTHON = "Python"  # synonym for PYTHON3
 PYTHON2 = "Python2"
 PYTHON3 = "Python3"
@@ -16,4 +17,4 @@ def supported():
     Returns:
       the list of supported languages.
     """
-    return [C, CPP, GO, JAVA, PYTHON, PYTHON2, PYTHON3]
+    return [C, CPP, GO, JAVA, OBJC, PYTHON, PYTHON2, PYTHON3]