68 lines
1.4 KiB
Python
68 lines
1.4 KiB
Python
class CFG_Node:
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__counter = 1
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def __init__(self, ast_node = None):
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self.ast_node = ast_node
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self.children = set()
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self.parents = set()
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self.id = CFG_Node.__counter
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CFG_Node.__counter += 1
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def get_children(self):
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return self.children
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def get_parents(self):
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return self.parents
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def add_child(self, child: CFG_Node, propagate = True):
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if propagate:
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child.parents.add(self)
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self.children.add(child)
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def add_parent(self, parent: CFG_Node, propagate = True):
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if propagate:
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parent.add_child(self)
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self.parents.add(parent)
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def remove_child(self, child: CFG_Node, propagate = True):
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if propagate:
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child.parents.remove(self)
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self.children.remove(child)
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def remove_parent(self, parent: CFG_Node, propagate = True):
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if propagate:
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parent.children.remove(self)
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self.parents.remove(parent)
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class CFG_START(CFG_Node):
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def dot_shape(self):
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return "circle"
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def dot_label(self):
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return "START"
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class CFG_END(CFG_Node):
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def dot_shape(self):
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return "doublecircle"
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def dot_label(self):
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return "END"
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class CFG_DIAMOND(CFG_Node):
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def dot_shape(self):
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return "diamond"
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class CFG_CALL(CFG_Node):
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def dot_shape(self):
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return "box"
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class CFG_RETURN(CFG_Node):
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def dot_shape(self):
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return "box"
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