Compiler Architecture

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# Copyright 2022 Google LLC.
# SPDX-License-Identifier: Apache-2.0
digraph architecture {
  subgraph cluster_01 {
    node [shape=plaintext]
    label = <<b>Legend</b>>;
    {rank=same; key, key2 }
    key [label=<<table border="0" cellpadding="2" cellspacing="0" cellborder="0">
      <tr><td align="right" port="i1">Requests (internal)</td></tr>
      <tr><td align="right" port="i2">Response (internal)</td></tr>
      <tr><td align="right" port="i3">Commands (external)</td></tr>
      <tr><td align="right" port="i4">Stats &amp; Errors</td></tr>
      <tr><td align="right" port="i5">Interactions</td></tr>
      <tr><td align="right" port="i6">Interactions with dependencies</td></tr>
      </table>>]
    key2 [label=<<table border="0" cellpadding="2" cellspacing="0" cellborder="0">
      <tr><td port="i1">&nbsp;</td></tr>
      <tr><td port="i2">&nbsp;</td></tr>
      <tr><td port="i3">&nbsp;</td></tr>
      <tr><td port="i4">&nbsp;</td></tr>
      <tr><td port="i5">&nbsp;</td></tr>
      <tr><td port="i6">&nbsp;</td></tr>
      </table>>]
    key:i1:e -> key2:i1:w [color="#0000ff"];
    key:i2:e -> key2:i2:w [color="#0000ff", style=dashed];
    key:i3:e -> key2:i3:w [color="#00cc00", style=bold];
    key:i4:e -> key2:i4:w [color="#ff7777"];
    key:i5:e -> key2:i5:w [style=dashed];
    key:i6:e -> key2:i6:w [color="#000000"];
  }
  user [label="User"];
  file_system [label="File System"];
  subgraph cluster_compiler {
    label=<<b>Compiler</b>>;
    file_watcher [label="File Watcher"];
    run_tests [label="Run Tests", style=bold];

    abstract_interpret_module [label="Abstract Interpret Module"];
    optimize_module [label="Optimize Module"];
    optimize_binary [label="Optimize Binary"];
    check_module [label="Check Module"];
    interpret_file [label="Interpret File", style=bold];
    lex_file [label="Lex File"];
    parse_file [label="Parse File"];
    load_file [label="Load File"];
    codegen_binary [label="Codegen Binary"];
    save_binary [label="Save Binary", style=bold];
  }
  subgraph cluster_ui {
    label=<<b>User Interface</b>>;
    repl [label=<REPL &amp; Commands>];
    status_reporter [label=<Status Reporter>];
  }

  user -> repl [color="#000000", style=dashed];
  status_reporter -> user [color="#000000", style=dashed];
  repl -> save_binary [color="#00cc00", style=bold];
  repl -> interpret_file [color="#00cc00", style=bold];
  repl -> run_tests [color="#00cc00", style=bold];

  file_system -> user [dir=both, style=dashed];
  file_watcher -> file_system [color="#000000"];
  load_file -> file_watcher [color="#0000ff"];
  file_watcher -> load_file [color="#0000ff", style=dashed];
  load_file -> file_system [color="#000000"];
  save_binary -> file_system [color="#000000"];
  run_tests -> save_binary [color="#0000ff"];
  save_binary -> run_tests [color="#0000ff", style=dashed];

  load_file -> status_reporter [color="#ff7777", arrowsize=0.5];
  lex_file -> status_reporter [color="#ff7777", arrowsize=0.5];
  parse_file -> status_reporter [color="#ff7777", arrowsize=0.5];
  interpret_file -> status_reporter [color="#ff7777", arrowsize=0.5];
  abstract_interpret_module -> status_reporter [color="#ff7777", arrowsize=0.5];
  check_module -> status_reporter [color="#ff7777", arrowsize=0.5];
  optimize_module -> status_reporter [color="#ff7777", arrowsize=0.5];
  optimize_binary -> status_reporter [color="#ff7777", arrowsize=0.5];
  codegen_binary -> status_reporter [color="#ff7777", arrowsize=0.5];
  save_binary -> status_reporter [color="#ff7777", arrowsize=0.5];

  lex_file -> load_file [color="#0000ff"];
  parse_file -> lex_file [color="#0000ff"];
  abstract_interpret_module -> parse_file [color="#0000ff"];
  check_module -> abstract_interpret_module [color="#0000ff"];
  interpret_file -> abstract_interpret_module [color="#0000ff"];
  optimize_module -> check_module [color="#0000ff"];
  optimize_binary -> optimize_module [color="#0000ff"];
  codegen_binary -> optimize_binary [color="#0000ff"];
  save_binary -> codegen_binary [color="#0000ff"];

  load_file -> lex_file [color="#0000ff", style=dashed];
  lex_file -> parse_file [color="#0000ff", style=dashed];
  parse_file -> abstract_interpret_module [color="#0000ff", style=dashed];
  abstract_interpret_module -> check_module [color="#0000ff", style=dashed];
  abstract_interpret_module -> interpret_file [color="#0000ff", style=dashed];
  check_module -> optimize_module [color="#0000ff", style=dashed];
  optimize_module -> optimize_binary [color="#0000ff", style=dashed];
  optimize_binary -> codegen_binary [color="#0000ff", style=dashed];
  codegen_binary -> save_binary [color="#0000ff", style=dashed];
}

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