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Add fix for Region.from_expression case with )(

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This commit is contained in:
Paul Romano 2022-03-25 11:44:01 -05:00
parent 5f31e12443
commit f9ba350e1c
1 changed files with 9 additions and 3 deletions
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12
openmc/region.py
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@ -116,14 +116,20 @@ class Region(ABC):
# For everything other than intersection, add the operator
# to the list of tokens
tokens.append(expression[i])
# If two parentheses appear immediately adjacent to one
# another, we need an intersection between them
if expression[i:i+2] == ')(':
tokens.append(' ')
else:
# Find next non-space character
while expression[i+1] == ' ':
i += 1
# If previous token is a halfspace or right parenthesis and next token
# is not a left parenthese or union operator, that implies that the
# whitespace is to be interpreted as an intersection operator
# If previous token is a halfspace or right parenthesis and
# next token is not a left parenthesis or union operator,
# that implies that the whitespace is to be interpreted as
# an intersection operator
if (i_start >= 0 or tokens[-1] == ')') and \
expression[i+1] not in ')|':
tokens.append(' ')