Given a patch (see examples), call parse(stream, is_patch=True, name='') in parser.py to split the patch into "statements" by terminators like ;, {, }.
from rparser import parse
diff_string = "@@ -0,0 +1,21 @@\n+public class ArrayJava {\n+ public static void main(String[] args) {\n+ int[] mas = {3, 3, 8, 9, 7, 8, 4, 6, 6, 8, 6, 9, 8, 6, 3, 3, 3, 5};\n+\n+ int a = 0;\n+ int d = 0;\n+ for (int i = 0; i < mas.length; i++) {\n+ for (int j = i + 1; j < mas.length - 1; j++) {\n+ if (mas[i] == mas[j]) {\n+ a = mas[i];\n+ d++;\n+\n+ }\n+\n+ }\n+ System.out.println(\"элемент \" + a + \" встречается \" + d + \" раз\\n\");\n+ d = 0;\n+ break;\n+ }\n+ }\n+}"
patch = parse(diff_string, name='src/ArrayJava.java')If you want to patch the content of a Java file, you should set is_patch as False.
with open(java_file_path, 'r') as f:
patch = parse(f.read(), is_patch=False, name=file_name)First, create a DefaultEngine instance with a Context instance. An engine will call detectors to check each statements, while the context contains some pointers to currently detected patch set, patch, hunk and line that may be used by detectors.
from patterns.models.context import Context
from patterns.models.engine import DefaultEngine
context = Context()
# context.enable_online_search() # Time-consuming operation that searches code via Github API
engine = DefaultEngine(context)
engine.visit(*patchset) # Here, patchset is a list of patch and you can only pass a single patch
bug_instances = engine.filter_bugs(level='low') # Return a list of warning objects of BugInstance type Codegex found.You can include/exclude detectors by passing a list of detector names to included_filter/excluded_filter of the constructor of an engine. All available detector names are in gen_detectors.py
The code is in codegex-evaluation.