def ast_to_blitz_expr(ast_seq):
"""Convert an ast_sequence to a blitz expression."""
# Don't overwrite orignal sequence in call to transform slices.
ast_seq = copy.deepcopy(ast_seq)
slice_handler.transform_slices(ast_seq)
# Build the actual program statement from ast_seq
expr = ast_tools.ast_to_string(ast_seq)
# Now find and replace specific symbols to convert this to
# a blitz++ compatible statement.
# I'm doing this with string replacement here. It could
# also be done on the actual ast tree (and probably should from
# a purest standpoint...).
# this one isn't necessary but it helps code readability
# and compactness. It requires that
# Range _all = blitz::Range::all();
# be included in the generated code.
# These could all alternatively be done to the ast in
# build_slice_atom()
expr = expr.replace('slice(_beg,_end)', '_all')
expr = expr.replace('slice', 'blitz::Range')
expr = expr.replace('[','(')
expr = expr.replace(']', ')')
expr = expr.replace('_stp', '1')
# Instead of blitz::fromStart and blitz::toEnd. This requires
# the following in the generated code.
# Range _beg = blitz::fromStart;
# Range _end = blitz::toEnd;
#expr = expr.replace('_beg', 'blitz::fromStart' )
#expr = expr.replace('_end', 'blitz::toEnd' )
return expr + ';\n'
def generic_check(self, suite_string, desired):
ast_list = parser.suite(suite_string).tolist()
slice_handler.transform_slices(ast_list)
actual = ast_to_string(ast_list)
# Remove white space from expressions so that equivalent
# but differently formatted string will compare equally
actual = remove_whitespace(actual)
desired = remove_whitespace(desired)
assert_equal(actual, desired, suite_string)
def generic_check(self, suite_string, desired):
ast_list = parser.suite(suite_string).tolist()
slice_handler.transform_slices(ast_list)
actual = ast_to_string(ast_list)
# Remove white space from expressions so that equivalent
# but differently formatted string will compare equally
actual = remove_whitespace(actual)
desired = remove_whitespace(desired)
assert_equal(actual, desired, suite_string)
def generic_test(self,suite_string,desired):
import parser
ast_list = parser.suite(suite_string).tolist()
slice_handler.transform_slices(ast_list)
actual = ast_to_string(ast_list)
# Remove white space from expressions so that equivelant
# but differently formatted string will compare equally
import string
actual = replace_whitespace(actual)
desired = replace_whitespace(desired)
print_assert_equal(suite_string,actual,desired)