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Allow concatenation of key+string and string+key producing string.

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Also add corresponding test cases, making some mostly cosmetic changes to the test program while on it.
This commit is contained in:
Sei Lisa 2014-07-26 04:41:09 +02:00
parent 841413a2cf
commit e03b342f78
2 changed files with 17 additions and 5 deletions
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12
lslopt/lslparse.py
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@ -886,6 +886,7 @@ class parser(object):
#or op == '-' and type2 not in ('integer', 'float',
# 'vector', 'rotation'):
raise EParseTypeMismatch(self)
# Isolate the additions where the types match to make our life easier later
if op == '+' and (type1 == type2 or type1 == 'list' or type2 == 'list'):
if type1 == type2 == 'key':
# key + key is the only disallowed combo of equals
@ -902,6 +903,13 @@ class parser(object):
# list + (list)nonlist and same goes for nonlist + list, they
# don't compile to the same thing, but the optimizer should deal
# with typecast removal anyway.
elif self.allowkeyconcat and op == '+' \
and type1 in ('key', 'string') and type2 in ('key', 'string'):
# Allow key addition (but add explicit cast)
if type1 == 'key':
term = [S[op], S[type2], [S['CAST'], S[type2], term], value]
else:
term = [S[op], S[type1], term, [S['CAST'], S[type1], value]]
elif type1 == 'key' or type2 == 'key':
# Only list + key or key + list is allowed, otherwise keys can't
# be added or subtracted with anything.
@ -1663,8 +1671,8 @@ class parser(object):
# the correctness of the output)
self.explicitcast = 'explicitcast' in options
# TODO: Allow string + key
#self.allowkeyconcat = 'allowkeyconcat' in options
# Allow string + key = string and key + string = string
self.allowkeyconcat = 'allowkeyconcat' in options
# Allow C style string composition of strings: "blah" "blah" = "blahblah"
self.allowmultistrings = 'allowmultistrings' in options