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bpo-39320: Handle unpacking of *values in compiler (GH-17984)

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* Add three new bytecodes: LIST_TO_TUPLE, LIST_EXTEND, SET_UPDATE. Use them to implement star unpacking expressions.

* Remove four bytecodes BUILD_LIST_UNPACK, BUILD_TUPLE_UNPACK, BUILD_SET_UNPACK and  BUILD_TUPLE_UNPACK_WITH_CALL opcodes as they are now unused.

* Update magic number and dis.rst for new bytecodes.
This commit is contained in:
Mark Shannon 2020-01-23 09:25:17 +00:00 • committed by GitHub
parent f9e07e116c
commit 13bc13960c
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10 changed files with 2349 additions and 2360 deletions
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8
Lib/opcode.py
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@ -117,6 +117,7 @@ def_op('INPLACE_AND', 77)
def_op('INPLACE_XOR', 78)
def_op('INPLACE_OR', 79)
def_op('LIST_TO_TUPLE', 82)
def_op('RETURN_VALUE', 83)
def_op('IMPORT_STAR', 84)
def_op('SETUP_ANNOTATIONS', 85)
@ -199,20 +200,19 @@ hasfree.append(148)
def_op('EXTENDED_ARG', 144)
EXTENDED_ARG = 144
def_op('BUILD_LIST_UNPACK', 149)
def_op('BUILD_MAP_UNPACK', 150)
def_op('BUILD_MAP_UNPACK_WITH_CALL', 151)
def_op('BUILD_TUPLE_UNPACK', 152)
def_op('BUILD_SET_UNPACK', 153)
jrel_op('SETUP_ASYNC_WITH', 154)
def_op('FORMAT_VALUE', 155)
def_op('BUILD_CONST_KEY_MAP', 156)
def_op('BUILD_STRING', 157)
def_op('BUILD_TUPLE_UNPACK_WITH_CALL', 158)
name_op('LOAD_METHOD', 160)
def_op('CALL_METHOD', 161)
def_op('LIST_EXTEND', 162)
def_op('SET_UPDATE', 163)
del def_op, name_op, jrel_op, jabs_op