Init

.gitignore

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+/target
+graphviz/*.svg

Cargo.toml

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+[package]
+name = "walpurgis"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

graphviz/functions.dot

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+digraph functions {
+  rankdir=TB;
+  graph [fontname = "cc wild words"];
+  node [fontname = "cc wild words"];
+  edge [fontname = "cc wild words"];
+  rank=TB;
+
+  subgraph cluster_fn_args_1 {
+    label="fn_args(GazType)";
+    fontname=lovebeat;
+    rankdir=TB;
+    newrank=true;
+
+    A1 [label="gen_type(GazType)" shape=diamond style=filled fillcolor=lightcoral];
+    B1 [label="pack into var"];
+    C1 [label="return" style=filled fillcolor=lightskyblue1];
+    A1 -> B1 -> A1;
+    B1 -> C1;
+  }
+
+  subgraph cluster_fn_gen_type_2 {
+    label="fn_gen_type(GazType)";
+    fontname=lovebeat;
+    rankdir=TB;
+    newrank=true;
+
+    A2 [label="expr for type"];
+    B2 [label="literal"];
+    C2 [label="variable"];
+    D2 [label="subroutine"];
+    F2 [label="return" style=filled fillcolor=lightskyblue1];
+
+    A2 -> A2 [dir=back];
+    A2 -> B2 -> A2;
+    A2 -> C2 -> A2;
+    A2 -> D2 -> A2;
+    A2 -> F2;
+  }
+
+  subgraph cluster_fn_gen_global_type_3 {
+    label="fn_gen_global_type(GazType)";
+    fontname=lovebeat;
+    rankdir=TB;
+    newrank=true;
+
+    A3 [label="expr for type"];
+    B3 [label="literal"];
+    C3 [label="global"];
+    D3 [label="function"];
+    F3 [label="return" style=filled fillcolor=lightskyblue1];
+
+    A3 -> A3 [dir=back];
+    A3 -> B3 -> A3;
+    A3 -> C3 -> A3;
+    A3 -> D3 -> A3;
+    A3 -> F3;
+  }
+}

graphviz/global_flow.dot

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+digraph flow {
+  // Global settings
+  graph [fontname = "cc wild words"];
+  node [fontname = "cc wild words"];
+  edge [fontname = "cc wild words"];
+  rank=TB;
+
+  A0 [label="Global" style=filled fillcolor=gold];
+  B0 [label="declare global"];
+  C0 [label="end generation"];
+  D0 [label="for each undefined subroutine"];
+  F0 [label="return" style=filled fillcolor=lightskyblue1];
+
+  node [shape=diamond style=filled fillcolor=lightsalmon];
+  FA0 [label="fn_gen_global_type(GazType)"];
+  FB0 [label="fn_gen_main()"];
+  FC0 [label="fn_define_subroutine(SubRoutine)"];
+  FD0 [label="fn_declare_subroutine()"];
+  FE0 [label="fn_gen_typedef()"];
+
+  A0 -> B0 -> FA0 -> A0;
+  A0 -> C0 -> FB0 -> D0;
+  A0 -> FD0 -> A0;
+  A0 -> FE0 -> A0;
+  D0 -> FC0 -> D0;
+  D0 -> F0;
+}

scripts/build_graphs.sh

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+#!/usr/bin/env bash
+
+declare path=""
+declare -ra fnames=( 'functions' 'global_flow' )
+
+if [[ "$1" == -h || "$1" == --help ]]; then
+  cat <<HELP
+Builds the digraphs for this project. Must be run from top level git directory
+HELP
+  exit 0
+elif [[ -d .git ]]; then
+  path="./graphviz"
+elif [[ -d ../.git ]]; then
+  path="../graphviz"
+else
+  cat <<HELP
+Builds the digraphs for this project. Must be run from top level git directory
+HELP
+  exit 1
+fi
+
+for name in "${fnames[@]}"; do
+  dot -Tsvg -o "${path}/${name}.svg" "${path}/${name}.dot"
+done

src/main.rs

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+fn main() {
+    println!("Hello, world!");
+}