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Make precedence table top-bottom order reference...

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in https://docs.python.org/2/reference/expressions.html#operator-precedence or
https://docs.python.org/3/reference/expressions.html#operator-precedence
.
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rocky
2019-05-13 08:08:29 -04:00
parent d99e78d46d
commit 1cc08d9598
1 changed files with 44 additions and 42 deletions
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86
uncompyle6/semantics/consts.py
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@@ -27,83 +27,85 @@ else:
maxint = sys.maxint
# Operator precidence
# See https://docs.python.org/2/reference/expressions.html
# or https://docs.python.org/3/reference/expressions.html
# for a list. The top to down order here is reversed
# from the list in the above lin.
# Operator precidence See
# https://docs.python.org/2/reference/expressions.html#operator-precedence
# or
# https://docs.python.org/3/reference/expressions.html#operator-precedence
# for a list. We keep the same top-to-botom order here as in the above links,
# so we start with low precedence (high values) and go down in value.
# Things at the bottom of this list below with low-value precedence will
# Things at the bottom of this list below with high precedence (low value) will
# tend to have parenthesis around them. Things at the top
# of the list will tend not to have parenthesis around them.
# Note: The values in this table tend to be even value. Inside
# Note: The values in this table are even numbers. Inside
# various templates we use odd values. Avoiding equal-precedent comparisons
# avoids ambiguity what to do when the precedence is equal.
PRECEDENCE = {
'yield_from': 102,
'yield': 102,
'yield_from': 102,
'_mklambda': 30,
'ret_cond': 28,
'if_expr_true': 28,
'conditionalnot': 28,
'conditional_not_lamdba': 28, # Lambda expression
'conditional_lamdba': 28, # Lambda expression
'conditional': 28, # Conditional expression
'conditional_lamdba': 28, # Lambda expression
'conditional_not_lamdba': 28, # Lambda expression
'conditionalnot': 28,
'if_expr_true': 28,
'ret_cond': 28,
'ret_or': 26,
'or': 26, # Boolean OR
'ret_or': 26,
'ret_and': 24,
'and': 24, # Boolean AND
'unary_not': 22, # Boolean NOT
'compare': 20, # in, not in, is, is not, <, <=, >, >=, !=, ==
'ret_and': 24,
'unary_not': 22, # Boolean NOT
'BINARY_AND': 14, # Bitwise AND
'BINARY_OR': 18, # Bitwise OR
'BINARY_XOR': 16, # Bitwise XOR
'BINARY_AND': 14, # Bitwise AND
'BINARY_RSHIFT': 12, # Shifts >>
'BINARY_LSHIFT': 12, # Shifts <<
'BINARY_RSHIFT': 12, # Shifts >>
'BINARY_SUBTRACT': 10,
'BINARY_ADD': 10,
'BINARY_ADD': 10, # -
'BINARY_SUBTRACT': 10, # +
'BINARY_MODULO': 8,
'BINARY_FLOOR_DIVIDE': 8,
'BINARY_TRUE_DIVIDE': 8,
'BINARY_DIVIDE': 8,
'BINARY_MULTIPLY': 8,
'BINARY_DIVIDE': 8, # /
'BINARY_FLOOR_DIVIDE': 8, # //
'BINARY_MATRIX_MULTIPLY': 8, # @
'BINARY_MODULO': 8, # Remainder, %
'BINARY_MULTIPLY': 8, # *
'BINARY_TRUE_DIVIDE': 8, # Division /
'unary_expr': 6,
'unary_expr': 6, # +x, -x, ~x
'BINARY_POWER': 4,
'BINARY_POWER': 4, # Exponentiation, *
'call': 2,
'buildslice3': 2,
'buildslice2': 2,
'slice3': 2,
'slice2': 2,
'slice1': 2,
'slice0': 2,
'attribute': 2, # x.attribute
'buildslice2': 2, # x[index]
'buildslice3': 2, # x[index:index]
'call': 2, # x(arguments...)
'delete_subscript': 2,
'slice0': 2,
'slice1': 2,
'slice2': 2,
'slice3': 2,
'store_subscript': 2,
'subscript2': 2,
'subscript': 2,
'attribute': 2,
'subscript2': 2,
'generator_exp': 0,
'list_comp': 0,
'set_comp_expr': 0,
'set_comp': 0,
'dict': 0, # {expressions...}
'dict_comp': 0,
'generator_exp': 0, # (expressions...)
'list': 0, # [expressions...]
'list_comp': 0,
'set_comp': 0,
'set_comp_expr': 0,
'unary_convert': 0,
'dict': 0,
'list': 0,
}
LINE_LENGTH = 80