def wrapper(*args, **kwargs):
# create a global variable to store the result within. Make sure it is unlikely to already exist
exec_code, var_name = append_fn_call(source, fn)
tracer = CodeTracer()
tracer.max_width = max_width
local_context_copy = dict(locals())
trace = tracer.trace_code(exec_code,
global_context=fn.__globals__,
local_context=local_context_copy,
dump=dump)
trace = remove_fn_call(trace)
# add back in the preamble if dumping code also
if dump:
trace = preamble + "\n" + trace
print("*** Trace Output *** ".ljust(80, "-"))
print(trace)
print("*** END Trace Output *** ".ljust(80, "-"))
# get return val
ret_val = None
if var_name in local_context_copy:
ret_val = local_context_copy[var_name]
return ret_val
def parsecode():
try:
code = request.form["code"]
if not code or len(code.strip()) == 0:
return jsonify({"error": "code is null or empty"})
tracer = CodeTracer()
tracer.max_width = 200000
code_report = tracer.trace_code(code, dump=False)
return jsonify({"code_report": code_report})
except Exception as e:
exc = format_exc()
print(exc)
return (jsonify(
{"error": "an exception occurred: {exc}".format(exc=exc)}), 500)
def test_infinite_loop_by_width(self):
# SETUP
code = """\
n = 0
while True:
n += 1
"""
expected_report = """\
n = 0
| |
n = 1 | n = 2 | RuntimeError: live coding message limit exceeded """
tracer = CodeTracer()
tracer.max_width = 20
# EXEC
report = tracer.trace_code(code)
# VERIFY
self.assertReportEqual(expected_report, report)
def test_infinite_loop_by_width(self):
# SETUP
code = """\
n = 0
while True:
n += 1
"""
expected_report = """\
n = 0
| |
n = 1 | n = 2 | RuntimeError: live coding message limit exceeded """
tracer = CodeTracer()
tracer.max_width = 20
# EXEC
report = tracer.trace_code(code)
# VERIFY
self.assertReportEqual(expected_report, report)
def test_infinite_recursion_by_width(self):
# SETUP
code = """\
def foo(n):
foo(n+1)
foo(0)
"""
expected_report = """\
n = 0 | n = 1 | n = 2 |
RuntimeError: live coding message limit exceeded | RuntimeError: live coding message limit exceeded | RuntimeError: live coding message limit exceeded |
RuntimeError: live coding message limit exceeded
"""
tracer = CodeTracer()
tracer.max_width = 20
# EXEC
report = tracer.trace_code(code)
# VERIFY
self.assertReportEqual(expected_report, report)
def test_infinite_recursion_by_width(self):
# SETUP
code = """\
def foo(n):
foo(n+1)
foo(0)
"""
expected_report = """\
n = 0 | n = 1 |
RuntimeError: live coding message limit exceeded | RuntimeError: live coding message limit exceeded |
RuntimeError: live coding message limit exceeded
"""
tracer = CodeTracer()
tracer.max_width = 13
# EXEC
report = tracer.trace_code(code)
# VERIFY
self.assertReportEqual(expected_report, report)
def trace(self, line, cell):
source = "i = 0\ni+=1\n"
ipython = get_ipython()
dump = True
# Set this to None (or don't set) when logging the code rather than printing it
max_width = 20000
tracer = CodeTracer()
tracer.max_width = max_width
trace = tracer.trace_code(source,
global_context=ipython.user_ns,
local_context=dict(),
dump=dump)
# add back in the preamble if dumping code also
ipython.write("*** Trace Output *** ".ljust(80, "-"))
ipython.write(trace)
ipython.write("*** END Trace Output *** ".ljust(80, "-"))
return line, cell
