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[3.12] gh-104799: Default missing lists in AST to the empty list (GH-104834) (#105213)

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(cherry picked from commit 77d2579586)

Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
This commit is contained in:
Miss Islington (bot) 2023-06-01 19:06:07 -07:00 • committed by GitHub
parent d57ee813eb
commit e6d5e63614
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4 changed files with 400 additions and 239 deletions
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49
Parser/asdl_c.py
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@ -632,29 +632,38 @@ class Obj2ModVisitor(PickleVisitor):
self.emit(line % field.name, depth)
self.emit("return 1;", depth+1)
self.emit("}", depth)
if not field.opt:
if field.seq:
self.emit("if (tmp == NULL) {", depth)
message = "required field \\\"%s\\\" missing from %s" % (field.name, name)
format = "PyErr_SetString(PyExc_TypeError, \"%s\");"
self.emit(format % message, depth+1, reflow=False)
self.emit("return 1;", depth+1)
self.emit("tmp = PyList_New(0);", depth+1)
self.emit("if (tmp == NULL) {", depth+1)
self.emit("return 1;", depth+2)
self.emit("}", depth+1)
self.emit("}", depth)
self.emit("{", depth)
else:
self.emit("if (tmp == NULL || tmp == Py_None) {", depth)
self.emit("Py_CLEAR(tmp);", depth+1)
if self.isNumeric(field):
if field.name in self.attribute_special_defaults:
self.emit(
"%s = %s;" % (field.name, self.attribute_special_defaults[field.name]),
depth+1,
)
else:
self.emit("%s = 0;" % field.name, depth+1)
elif not self.isSimpleType(field):
self.emit("%s = NULL;" % field.name, depth+1)
if not field.opt:
self.emit("if (tmp == NULL) {", depth)
message = "required field \\\"%s\\\" missing from %s" % (field.name, name)
format = "PyErr_SetString(PyExc_TypeError, \"%s\");"
self.emit(format % message, depth+1, reflow=False)
self.emit("return 1;", depth+1)
else:
raise TypeError("could not determine the default value for %s" % field.name)
self.emit("}", depth)
self.emit("else {", depth)
self.emit("if (tmp == NULL || tmp == Py_None) {", depth)
self.emit("Py_CLEAR(tmp);", depth+1)
if self.isNumeric(field):
if field.name in self.attribute_special_defaults:
self.emit(
"%s = %s;" % (field.name, self.attribute_special_defaults[field.name]),
depth+1,
)
else:
self.emit("%s = 0;" % field.name, depth+1)
elif not self.isSimpleType(field):
self.emit("%s = NULL;" % field.name, depth+1)
else:
raise TypeError("could not determine the default value for %s" % field.name)
self.emit("}", depth)
self.emit("else {", depth)
self.emit("int res;", depth+1)
if field.seq: