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author | rcoh <rcoh@mit.edu> | 2011-02-12 16:40:02 -0500 |
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committer | rcoh <rcoh@mit.edu> | 2011-02-12 16:40:02 -0500 |
commit | 5f54bf57128dbca04a9325670a6ad1e03097d5cb (patch) | |
tree | f7d5a94975c842cec497dd8b301830fd5a30f7e9 /util/Config.py | |
parent | 1604f05ec0bad79798bbd764cd62bdb20e55f444 (diff) | |
parent | cf1048df72b845ef7fefd5ec5709f7d1b2c4df79 (diff) |
Merge branch 'objprops'
Conflicts:
Profile.py
Diffstat (limited to 'util/Config.py')
-rw-r--r-- | util/Config.py | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/util/Config.py b/util/Config.py index 6fdb0d4..25018a8 100644 --- a/util/Config.py +++ b/util/Config.py @@ -1,4 +1,5 @@ from xml.etree.ElementTree import * +import re import sys import xml import pdb @@ -112,8 +113,20 @@ def pullArgsFromItem(parentNode): return args def attemptEval(val): + """Runs an eval if possible, or converts into a lambda expression if indicated. Otherwise, + leaves as a string.""" try: - val = eval(val) + if '${' in val and '}$' in val: #TODO: this could be a little cleaner + dictVal = re.sub("'\$\{(.+?)\}\$'", "b['\\1']", val) #replace expressions '${blah}$' with b['blah'] + dictVal = re.sub("\$\{(.+?)\}\$", "a['\\1']", dictVal) #replace all expressions like {blah} with a['blah'] + if "'${" and "}$'" in val: #nested lambda madness + lambdaVal = eval('lambda a: lambda b: ' + dictVal) + else: + lambdaVal = eval('lambda a:'+dictVal) #TODO: nested lambdas + return lambdaVal #convert referential objects to lambda expressions which can be + #resolved dynamically. + else: + val = eval(val) except (NameError, SyntaxError): val = str(val) return val |