63 lines
1.5 KiB
Standard ML
63 lines
1.5 KiB
Standard ML
structure dot_graphsLib :> dot_graphsLib =
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struct
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open HolKernel Parse
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datatype array_graph = AG of string
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val new_array_graph = AG "";
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(* Auxiliary functions *)
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fun AG_add (AG s) s' = AG (s ^ " " ^ s' ^ "\n")
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fun node_name n = ("node_"^(int_to_string n))
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(* create a new node with number n and value v in graph ag *)
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fun add_node ag (n:int) (v : term option) = let
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val n_s = node_name n;
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val v_s = case v of NONE => "-"
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| SOME t => "'" ^ (term_to_string t) ^ "'"
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val new_s = (n_s ^ " [label=\"" ^ (int_to_string n) ^": "^v_s^"\"]")
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in
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AG_add ag new_s
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end
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(* Add a link between nodes n1 and n2 *)
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fun add_node_link ag (n1:int) (n2 : int) (label : string) = let
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val new_s = (node_name n1) ^ " -> " ^ (node_name n2) ^ " [label=\""^label^"\"]";
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in
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AG_add ag new_s
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end
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fun graph_to_string (AG s) = "digraph G {\n" ^ s ^ "}\n\n"
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fun print_graph ag = (TextIO.print (graph_to_string ag))
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fun write_graph_to_dot_file ag file_name = let
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val os = TextIO.openOut file_name;
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val _ = TextIO.output (os, graph_to_string ag);
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val _ = TextIO.closeOut os
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in
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()
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end
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val dot_binary = ref "/usr/bin/dot";
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fun show_graph ag = let
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val p = Unix.execute (!dot_binary, ["-Tx11"])
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val os = Unix.textOutstreamOf p
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val _ = TextIO.output (os, graph_to_string ag)
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val _ = TextIO.closeOut os
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in
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()
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end
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fun write_graph_to_png_file ag filename = let
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val p = Unix.execute (!dot_binary, ["-Tpng", "-o", filename])
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val os = Unix.textOutstreamOf p
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val _ = TextIO.output (os, graph_to_string ag)
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val _ = TextIO.closeOut os
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in
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()
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end
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end
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