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import uuid
import graphviz as gv
from dataclasses import dataclass
from typing import Optional, cast
from astree.graphable import Graphable
from astree.type import Type
from astree.ident import Ident
from astree.expr import Expr
# A global declaration.
#
# entero a = 0;
@dataclass
class DeclGlobal(Graphable):
ident: Ident
_type: Type
init: Expr
def graph(self, dot: gv.Digraph, parent: str = None, edge: str = None) -> None:
name = uuid.uuid1().hex
dot.node(name, 'DeclGlobal')
dot.edge(parent, name, label = edge)
name_ident = uuid.uuid1().hex
dot.node(name_ident, self.ident)
dot.edge(name, name_ident, label = 'ident')
if isinstance(self.init, Graphable):
self.init.graph(dot, name, 'init')
# A function declaration.
#
# funcion vacio main() { ... }
@dataclass
class DeclFunc(Graphable):
ident: Ident
prototype: Type
body: Optional[Expr]
def graph(self, dot: gv.Digraph, parent: str = None, edge: str = None) -> None:
name = uuid.uuid1().hex
dot.node(name, 'DeclFunc')
dot.edge(parent, name, label = edge)
name_ident = uuid.uuid1().hex
dot.node(name_ident, self.ident)
dot.edge(name, name_ident, label = 'ident')
if isinstance(self.prototype, Graphable):
self.prototype.graph(dot, name, 'prototype')
if self.body and isinstance(self.body, Graphable):
self.body.graph(dot, name, 'body')
# A Javañol declaration
Decl = DeclGlobal | DeclFunc
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