From 02a5871f890b790bbd19695ee9acf42db1eba0d5 Mon Sep 17 00:00:00 2001
From: Pavel Shevaev <pacha.shevaev@gmail.com>
Date: Tue, 17 Dec 2024 23:14:48 +0300
Subject: [PATCH] Splitting codegen output to many files assumed to be stored
 under non VCS directory

---
 src/codegen.inc.php                           | 56 ++++++++++++++++++-
 ...degen_bundle.twig => codegen_factory.twig} |  4 +-
 tpl/codegen_types_slice.twig                  | 16 ++++++
 tpl/macro.twig                                |  4 +-
 4 files changed, 75 insertions(+), 5 deletions(-)
 rename tpl/{codegen_bundle.twig => codegen_factory.twig} (91%)
 create mode 100644 tpl/codegen_types_slice.twig

diff --git a/src/codegen.inc.php b/src/codegen.inc.php
index 31ade4d..c4e717b 100644
--- a/src/codegen.inc.php
+++ b/src/codegen.inc.php
@@ -2,7 +2,7 @@
 namespace metagen_cs;
 use Exception;
 
-function codegen(?string $cache_dir, \mtgMetaInfo $meta, array $options = []) : string
+function codegen(?string $cache_dir, \mtgMetaInfo $meta, array $options = []) : array
 {
   $twig = get_twig();
 
@@ -15,7 +15,21 @@ function codegen(?string $cache_dir, \mtgMetaInfo $meta, array $options = []) :
   if(!isset($options['namespace']))
     $options['namespace'] = 'BitGames.Autogen';
 
-  return $twig->render('codegen_bundle.twig', $options);
+  $sliced_units = slice_units($meta->getUnits(), 50);
+
+  $output = array();
+
+  foreach($sliced_units as $slice_idx => $slice_units)
+  {
+    $slice_options = $options;
+    $slice_options['slice_idx'] = $slice_idx;
+    $slice_options['slice_units'] = $slice_units;
+    $output['types_'.$slice_idx.'.cs'] = $twig->render('codegen_types_slice.twig', $slice_options);
+  }
+
+  $output['factory.cs'] = $twig->render('codegen_factory.twig', $options);
+
+  return $output;
 }
 
 function get_twig(array $inc_path = []) : \Twig\Environment
@@ -713,3 +727,41 @@ function get_field_index(\mtgMetaStruct $struct, string $field_name): int
   }
   return -1;
 }
+
+function paginate($total, $step)
+{
+  //pages are returned as an array where each element is in interval [N, Y)
+  $pages = array();
+
+  $steps = (int)($total/$step);
+  $rest = $total % $step;
+
+  for($i=1;$i<=$steps;++$i)
+    $pages[] = array(($i-1)*$step, $i*$step);
+
+  if($rest != 0)
+    $pages[]  = array(($i-1)*$step, ($i-1)*$step + $rest);
+
+  return $pages;
+}
+
+//slices array like this: [[idx0,[..]], [idx1,[..]], ...]
+function slice_units(array $units, $max)
+{
+  $pages = paginate(sizeof($units), $max);
+  
+  $sliced = array();
+
+  $units_keys = array_keys($units);
+
+  foreach($pages as $idx => $page)
+  {
+    $slice = array();
+    for($i = $page[0];$i<$page[1];++$i)
+    {
+      $slice[] = $units[$units_keys[$i]];
+    }
+    $sliced[$idx] = $slice;  
+  }
+  return $sliced;
+}
diff --git a/tpl/codegen_bundle.twig b/tpl/codegen_factory.twig
similarity index 91%
rename from tpl/codegen_bundle.twig
rename to tpl/codegen_factory.twig
index 122d1a9..31dfe44 100644
--- a/tpl/codegen_bundle.twig
+++ b/tpl/codegen_factory.twig
@@ -9,7 +9,9 @@ using System;
 namespace {{namespace}} {
 {% endif %}
 
-{{ macro.decl_units(meta) }}
+{%- for ai in get_all_declarable_accessor_interfaces(meta) ~%}
+  {{ macro.decl_accessor_interface(ai) }}
+{%- endfor ~%}
 
 static public class AutogenBundle 
 {
diff --git a/tpl/codegen_types_slice.twig b/tpl/codegen_types_slice.twig
new file mode 100644
index 0000000..88d3497
--- /dev/null
+++ b/tpl/codegen_types_slice.twig
@@ -0,0 +1,16 @@
+//THIS FILE IS GENERATED AUTOMATICALLY, DO NOT TOUCH IT!
+using System.Collections.Generic;
+using metagen;
+using System;
+
+{%- import "macro.twig" as macro -%}
+
+{% if namespace is defined ~%}
+namespace {{namespace}} {
+{% endif %}
+
+{{ macro.decl_units(slice_units) }}
+
+{% if namespace is defined ~%}
+} //namespace {{namespace}}
+{% endif %}
diff --git a/tpl/macro.twig b/tpl/macro.twig
index d99b178..55b26b6 100644
--- a/tpl/macro.twig
+++ b/tpl/macro.twig
@@ -1,6 +1,6 @@
-{% macro decl_units(meta) %}
+{% macro decl_units(units) %}
 
-{%- for u in meta.getunits ~%}
+{%- for u in units ~%}
   {%- if u.object is instanceof('\\mtgMetaStruct') -%}
   {{ _self.decl_struct(u.object) }}
   {%- elseif u.object is instanceof('\\mtgMetaEnum') -%}