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# Examine WT_WITH_* macros and complain if an early exit out of the
# macro is done. These macros potentially restore state after they execute
# an expression, and an early exit, like a return/goto means the state
# will not be restored.
#
# Files appear verbatim, separated by a recognizable pattern.
import re, sys
def get_indent(line):
return len(line) - len(line.lstrip())
filepat = re.compile('===(.*)===')
withpat = re.compile('WT_WITH_')
exitpat = re.compile('(WT_ERR|WT_RET|return\(|goto )')
filename = ''
linenum = 0
with_indent = -1
with_linenum = -1
with_line = None
for line in sys.stdin:
m = filepat.search(line)
if m != None:
filename = m.group(1)
linenum = 0
with_indent = -1
with_linenum = -1
with_line = None
linenum += 1
# Are we within a WT_WITH?
if with_indent >= 0:
cur_indent = get_indent(line)
# Have we "broken out" of the WT_WITH_.... macro?
# Our enforced formatting ensures this happens when the indent finishes.
if cur_indent <= with_indent:
# Yes, broken out
with_indent = -1
with_linenum = -1
with_line = None
elif exitpat.search(line):
print('{}: line {}: early exit: {}\n from: {}: line {}: {}'.format(
filename, linenum, line.strip(), filename, with_linenum,
with_line.strip()))
else:
m = withpat.search(line)
if m:
with_indent = get_indent(line)
with_linenum = linenum
with_line = line
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