def visit_Name(self, t):
self.check_identifier(t.id)
if isinstance(t.ctx, ast.Load): pass
elif isinstance(t.ctx, ast.Store): pass
else: assert False, "Only loads and stores are supported: %r" % (t,)
python类Load()的实例源码
def visit_Name(self, t):
if isinstance(t.ctx, ast.Load): return self.load(t.id)
elif isinstance(t.ctx, ast.Store): return self.store(t.id)
else: assert False
def visit_sequence(self, t, build_op):
if isinstance(t.ctx, ast.Load):
return self(t.elts) + build_op(len(t.elts))
elif isinstance(t.ctx, ast.Store):
return op.UNPACK_SEQUENCE(len(t.elts)) + self(t.elts)
else:
assert False
def visit_Name(self, t):
if isinstance(t.ctx, ast.Load): self.uses.add(t.id)
elif isinstance(t.ctx, ast.Store): self.defs.add(t.id)
else: assert False
def visit_Name(self, t):
if isinstance(t.ctx, ast.Load): return self.load(t.id)
elif isinstance(t.ctx, ast.Store): return self.store(t.id)
else: assert False
def visit_sequence(self, t, build_op):
if isinstance(t.ctx, ast.Load):
return self(t.elts) + build_op(len(t.elts))
elif isinstance(t.ctx, ast.Store):
return op.UNPACK_SEQUENCE(len(t.elts)) + self(t.elts)
else:
assert False
def visit_Name(self, t):
if isinstance(t.ctx, ast.Load): return self.load(t.id)
elif isinstance(t.ctx, ast.Store): return self.store(t.id)
else: assert False
def visit_Name(self, t):
if isinstance(t.ctx, ast.Load): return self.load(t.id)
elif isinstance(t.ctx, ast.Store): return self.store(t.id)
else: assert False
def visit_sequence(self, t, build_op):
if isinstance(t.ctx, ast.Load):
return self(t.elts) + build_op(len(t.elts))
elif isinstance(t.ctx, ast.Store):
return op.UNPACK_SEQUENCE(len(t.elts)) + self(t.elts)
else:
assert False
def visit_Name(self, t):
if isinstance(t.ctx, ast.Load): return self.load(t.id)
elif isinstance(t.ctx, ast.Store): return self.store(t.id)
else: assert False
def visit_sequence(self, t, build_op):
if isinstance(t.ctx, ast.Load):
return self(t.elts) + build_op(len(t.elts))
elif isinstance(t.ctx, ast.Store):
return op.UNPACK_SEQUENCE(len(t.elts)) + self(t.elts)
else:
assert False
def visit_Name(self, t):
if isinstance(t.ctx, ast.Load): return self.load(t.id)
elif isinstance(t.ctx, ast.Store): return self.store(t.id)
else: assert False
def visit_sequence(self, t, build_op):
if isinstance(t.ctx, ast.Load):
return self(t.elts) + build_op(len(t.elts))
elif isinstance(t.ctx, ast.Store):
return op.UNPACK_SEQUENCE(len(t.elts)) + self(t.elts)
else:
assert False
def visit_Name(self, t):
if isinstance(t.ctx, ast.Load): self.uses.add(t.id)
elif isinstance(t.ctx, ast.Store): self.defs.add(t.id)
else: assert False
def visit_Name(self, t):
if isinstance(t.ctx, ast.Load): return self.load(t.id)
elif isinstance(t.ctx, ast.Store): return self.store(t.id)
else: assert False
def visit_sequence(self, t, build_op):
if isinstance(t.ctx, ast.Load):
return self(t.elts) + build_op(len(t.elts))
elif isinstance(t.ctx, ast.Store):
return op.UNPACK_SEQUENCE(len(t.elts)) + self(t.elts)
else:
assert False
def visit_Attribute(self, attr):
if not isinstance(attr.ctx, ast.Load):
return self.generic_visit(attr)
source_explanation, source_result = self.visit(attr.value)
explanation = "%s.%s" % (source_explanation, attr.attr)
source = "__exprinfo_expr.%s" % (attr.attr,)
co = self._compile(source)
try:
result = self.frame.eval(co, __exprinfo_expr=source_result)
except Exception:
raise Failure(explanation)
explanation = "%s\n{%s = %s.%s\n}" % (self.frame.repr(result),
self.frame.repr(result),
source_explanation, attr.attr)
# Check if the attr is from an instance.
source = "%r in getattr(__exprinfo_expr, '__dict__', {})"
source = source % (attr.attr,)
co = self._compile(source)
try:
from_instance = self.frame.eval(co, __exprinfo_expr=source_result)
except Exception:
from_instance = True
if from_instance:
rep = self.frame.repr(result)
pattern = "%s\n{%s = %s\n}"
explanation = pattern % (rep, rep, explanation)
return explanation, result
def visit_Assign(self, assign):
value_explanation, value_result = self.visit(assign.value)
explanation = "... = %s" % (value_explanation,)
name = ast.Name("__exprinfo_expr", ast.Load(),
lineno=assign.value.lineno,
col_offset=assign.value.col_offset)
new_assign = ast.Assign(assign.targets, name, lineno=assign.lineno,
col_offset=assign.col_offset)
mod = ast.Module([new_assign])
co = self._compile(mod, "exec")
try:
self.frame.exec_(co, __exprinfo_expr=value_result)
except Exception:
raise Failure(explanation)
return explanation, value_result
def _NameConstant(c):
return ast.Name(str(c), ast.Load())
def assign(self, expr):
"""Give *expr* a name."""
name = self.variable()
self.statements.append(ast.Assign([ast.Name(name, ast.Store())], expr))
return ast.Name(name, ast.Load())
