mirror of
https://github.com/pevans/erc-c.git
synced 2024-10-30 21:26:54 +00:00
111 lines
3.7 KiB
Python
Executable File
111 lines
3.7 KiB
Python
Executable File
#!/usr/bin/env python2
|
|
#
|
|
# This script is written to look through source code files, looking for
|
|
# missing unit-tests and doc-block comments. It's mostly ugly, but so is
|
|
# the task at hand.
|
|
|
|
import os
|
|
import re
|
|
|
|
# This is sort of a monster function, but I've tried to lift as much out
|
|
# of the logic as I could. Basically, this function tries to find
|
|
# anything that's "wrong", which is one of:
|
|
#
|
|
# - missing docblock comment for functions
|
|
# - missing test for a function
|
|
def parse(fname):
|
|
lines = []
|
|
with open(fname, 'r') as f:
|
|
lines = f.read().split("\n")
|
|
|
|
length = len(lines)
|
|
|
|
# We probably got a directory in the path (like './src'); let's chop
|
|
# it off.
|
|
basefname = os.path.basename(fname)
|
|
|
|
# The suite is the name of the test suite as Criterion would define
|
|
# it.
|
|
suite = suite_name_from_file(basefname)
|
|
|
|
for num in range(0, length):
|
|
match = find_func_name(lines[num])
|
|
if match is not None:
|
|
# The test name is a part of the function
|
|
test_name = test_name_from_func(suite, match.group(1))
|
|
|
|
# We want to find something in a test file for each of the
|
|
# functions we define.
|
|
if not has_test('tests/' + basefname, suite, test_name):
|
|
print "Missing test: %s_%s" % (suite, test_name)
|
|
|
|
# We also want to have some doc-block comment for every
|
|
# function we write.
|
|
if not has_doc_block(lines, num):
|
|
print "Missing docblock comment: %s:%d: %s" % (fname, num, lines[num])
|
|
|
|
# Given a source file name, extract the suite name (which is really just
|
|
# the name of the file minus the '.c' part, and -- well, you can read
|
|
# the source).
|
|
def suite_name_from_file(fname):
|
|
return fname.replace('.c', '').replace('.', '_')
|
|
|
|
# Given a line of source code, figure out if there's a function that's
|
|
# defined there. We define functions in the form of:
|
|
#
|
|
# <type>
|
|
# <func>(...)
|
|
# {
|
|
# <body...>
|
|
# }
|
|
#
|
|
# So we can say a function definition will always begin at the first
|
|
# character on a line in which the name is immediately followed by an
|
|
# open parenthesis.
|
|
def find_func_name(line):
|
|
return re.search(r'^([a-zA-Z_][a-zA-Z0-9_]*)\(', line)
|
|
|
|
# Given a suite and a function name, figure out what the test name
|
|
# should be.
|
|
def test_name_from_func(suite, func):
|
|
return func.replace(suite + '_', '')
|
|
|
|
# Given a line and a line number, determine if we have a doc-block or
|
|
# not. (Which we can determine because there should be a closing comment
|
|
# token on the line above the type.)
|
|
def has_doc_block(lines, linenum):
|
|
if lines[linenum].find('// ignore docblock') > -1:
|
|
return True
|
|
return linenum-2 >= 0 and (lines[linenum-2] == ' */' or lines[linenum-1] == ' */')
|
|
|
|
# Do we have a test for this function? The fname is the test file, and
|
|
# the suite and test are -- well, what they are.
|
|
def has_test(fname, suite, test):
|
|
# This is a bit of fakery, but inspect-c is not (yet) smart enough
|
|
# to know that a macro like `DEFINE_ADDR(xyz)` expands to
|
|
# `mos6502_resolve_xyz` and that the test it should associate is
|
|
# that. So we skip macro function definitions for now.
|
|
if test.isupper():
|
|
return True
|
|
|
|
data = ''
|
|
with open(fname, 'r') as f:
|
|
data = f.read()
|
|
return data.find('Test(%s, %s)' % (suite, test)) > -1
|
|
|
|
# Walk through a directory, looking for C source files and header files
|
|
# to examine.
|
|
def walk(dname):
|
|
for root, subdirs, subfiles in os.walk(dname):
|
|
for fname in subfiles:
|
|
if fname == 'main.c':
|
|
continue
|
|
if fname[-2:] != '.c' and fname[-2:] != '.h':
|
|
continue
|
|
parse(root + '/' + fname)
|
|
|
|
# Walk through the src dir and see what we can see.
|
|
walk('./src')
|
|
|
|
# vim:ft=python:
|