travis: Add luac test

.travis.yml

@@ -1,6 +1,12 @@
 language: cpp
+env:
+  matrix:
+    -LUA_VERSION=5.2
+before_install:
+- sudo apt-get install lua$LUA_VERSION
 script:
-- python travis/lint.py
 - python travis/pr-check-base.py
+- python travis/lint.py
+- python travis/luac.py
 notifications:
     email: false

travis/luac.py

@@ -0,0 +1,26 @@
+import os, sys, subprocess
+
+def main():
+    root_path = os.path.abspath(sys.argv[1] if len(sys.argv) > 1 else '.')
+    if not os.path.exists(root_path):
+        print('Nonexistent path: %s' % root_path)
+        sys.exit(2)
+    err = False
+    for cur, dirnames, filenames in os.walk(root_path):
+        parts = cur.replace('\\', '/').split('/')
+        if '.git' in parts or 'depends' in parts:
+            continue
+        if '.git' in cur:
+            print(parts)
+        for filename in filenames:
+            if not filename.endswith('.lua'):
+                continue
+            full_path = os.path.join(cur, filename)
+            try:
+                subprocess.call(['luac' + os.environ.get('LUA_VERSION', ''), '-p', full_path])
+            except subprocess.CalledProcessError:
+                err = True
+    sys.exit(int(err))
+
+if __name__ == '__main__':
+    main()