From 19af495f4152cd7b8580ceab2a168182f44bedbb Mon Sep 17 00:00:00 2001
From: Ian Martins <ianxm@jhu.edu>
Date: Thu, 12 Nov 2020 05:18:48 -0500
Subject: [PATCH 2/2] ob-java.el: Allow for more whitespace in java code

* lisp/ob-java.el (defconst *-re): Updated regexps to allow for more
whitespace in the content of java code blocks, and removed some
redundancies.

* testing/lisp/test-ob-java.el (ob-java/simple-with-main-whitespace):
Added test case with lots of whitespace.
---
 lisp/ob-java.el              | 10 +++++-----
 testing/lisp/test-ob-java.el | 18 ++++++++++++++++++
 2 files changed, 23 insertions(+), 5 deletions(-)

diff --git a/lisp/ob-java.el b/lisp/ob-java.el
index 92e873f0d..d65176d4e 100644
--- a/lisp/ob-java.el
+++ b/lisp/ob-java.el
@@ -77,15 +77,15 @@ like javac -verbose."
   :package-version '(Org . "9.5")
   :type 'symbol)
 
-(defconst org-babel-java--package-re "^[[:space:]]*package[[:space:]]+\\\([[:alnum:]_\.]+\\\);$"
+(defconst org-babel-java--package-re "^[[:space:]]*package[[:space:]]+\\\([[:alnum:]_\.]+\\\)[[:space:]]*;$"
   "Regexp for the package statement.")
-(defconst org-babel-java--imports-re "^[[:space:]]*import[[:space:]]+\\\([[:alnum:]_\.]+\\\);$"
+(defconst org-babel-java--imports-re "^[[:space:]]*import[[:space:]]+\\\([[:alnum:]_\.]+\\\)[[:space:]]*;$"
   "Regexp for import statements.")
-(defconst org-babel-java--class-re "^[[:space:]]*\\\(?:public[[:space:]]+\\\)?class[[:space:]]+\\\([[:alnum:]_]+\\\)[[:space:]]*\n?[[:space:]]*{"
+(defconst org-babel-java--class-re "^[[:space:]]*\\\(?:public[[:space:]]+\\\)?class[[:space:]]+\\\([[:alnum:]_]+\\\)[[:space:]]*{"
   "Regexp for the class declaration.")
-(defconst org-babel-java--main-re "public static void main(String\\\(?:\\[]\\\)?[[:space:]]+[^ ]+\\\(?:\\[]\\\)?).*\n?[[:space:]]*{"
+(defconst org-babel-java--main-re "public[[:space:]]+static[[:space:]]+void[[:space:]]+main[[:space:]]*([[:space:]]*String[[:space:]]*.*[[:space:]]*)[[:space:]]*.*[[:space:]]*{"
   "Regexp for the main method declaration.")
-(defconst org-babel-java--any-method-re "public .*(.*).*\n?[[:space:]]*{"
+(defconst org-babel-java--any-method-re "public[[:space:]]+.*[[:space:]]*([[:space:]]*.*[[:space:]]*)[[:space:]]*.*[[:space:]]*{"
   "Regexp for any method.")
 (defconst org-babel-java--result-wrapper "\n    public static String __toString(Object val) {
         if (val instanceof String) {
diff --git a/testing/lisp/test-ob-java.el b/testing/lisp/test-ob-java.el
index e14975412..50d3ef5b0 100644
--- a/testing/lisp/test-ob-java.el
+++ b/testing/lisp/test-ob-java.el
@@ -128,6 +128,24 @@ public static void main(String args[]) {
 #+end_src"
     (should (string= "42" (org-babel-execute-src-block)))))
 
+(ert-deftest ob-java/simple-with-main-whitespace ()
+  "Hello world program that defines a main function with the square brackets after `args'."
+  (org-test-with-temp-text
+      "#+begin_src java :results output silent
+public
+static
+void
+main
+ (
+ String
+ args []
+ )
+{
+    System.out.print(42);
+}
+#+end_src"
+    (should (string= "42" (org-babel-execute-src-block)))))
+
 (ert-deftest ob-java/simple-with-class ()
   "Hello world program that defines a class."
   (org-test-with-temp-text
-- 
2.25.1