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compiler: add None type support
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9e21ea5658
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@ -34,7 +34,9 @@ class Visitor:
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def _visit_expr_NameConstant(self, node):
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v = node.value
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if isinstance(v, bool):
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if v is None:
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r = ir_values.VNone()
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elif isinstance(v, bool):
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r = ir_values.VBool()
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else:
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raise NotImplementedError
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@ -51,6 +51,7 @@ d = 4 # stays int32
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x = int64(7)
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a += x # promotes a to int64
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foo = True
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bar = None
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"""
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ns = infer_types(ast.parse(testcode))
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for k, v in sorted(ns.items(), key=itemgetter(0)):
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@ -2,6 +2,28 @@ from types import SimpleNamespace
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from llvm import core as lc
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# None type
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class VNone:
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def __repr__(self):
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return "<VNone>"
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def same_type(self, other):
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return isinstance(other, VNone)
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def merge(self, other):
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if not isinstance(other, VNone):
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raise TypeError
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def create_alloca(self, builder, name):
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pass
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def o_bool(self, builder):
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r = VBool()
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if builder is not None:
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r.create_constant(False)
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return r
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# Integer type
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class VInt:
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