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-rw-r--r--discocaml/draw_tree.ml22
1 files changed, 11 insertions, 11 deletions
diff --git a/discocaml/draw_tree.ml b/discocaml/draw_tree.ml
index fe3f037..6ea4ff2 100644
--- a/discocaml/draw_tree.ml
+++ b/discocaml/draw_tree.ml
@@ -2,17 +2,17 @@ open Ast
module IntSet = Set.Make (Int)
let add_node (fmt : Format.formatter) (i : expr index) (expr : expr) : unit =
- let label =
- match expr with
- | App _ -> "\"$\""
- | Int n -> Format.sprintf "\"%d\"" n
- | Lam (_, _) -> "\"λ\""
- | Prim (`Add, _) -> "\"+\""
- | Prim (`Sub, _) -> "\"-\""
- | Prim (`Mul, _) -> "\"*\""
- | Var n -> Format.sprintf "%S" n
- in
- Format.fprintf fmt " expr%d [label=%s];\n" i.index label
+ match expr with
+ | App _ ->
+ Format.fprintf fmt
+ " expr%d [fontname=\"CMU Typewriter Text Bold\", label=\"apply\"];\n"
+ i.index
+ | Int n -> Format.fprintf fmt " expr%d [label=\"%d\"];\n" i.index n
+ | Lam (_, _) -> Format.fprintf fmt " expr%d [label=\"λ\"];\n" i.index
+ | Prim (`Add, _) -> Format.fprintf fmt " expr%d [label=\"+\"];\n" i.index
+ | Prim (`Sub, _) -> Format.fprintf fmt " expr%d [label=\"-\"];\n" i.index
+ | Prim (`Mul, _) -> Format.fprintf fmt " expr%d [label=\"*\"];\n" i.index
+ | Var n -> Format.fprintf fmt " expr%d [label=%S];\n" i.index n
let add_expr_edges (ast : 'a ast) (fmt : Format.formatter)
(nodes : IntSet.t ref) : expr index -> unit =