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--- note:sun_jun_22_2025 [2025/06/22 02:34] – created lingao
+++ note:sun_jun_22_2025 [2025/06/22 14:52] (current) – lingao
@@ Line 1: / Line 1: @@
 ====== Code Formatter ======
-  * https://yorickpeterse.com/articles/how-to-write-a-code-formatter/
+  * :!: https://yorickpeterse.com/articles/how-to-write-a-code-formatter/
   * https://www.ntietz.com/blog/writing-basic-code-formatter/
+  * :!: https://journal.stuffwithstuff.com/2015/09/08/the-hardest-program-ive-ever-written/
+===== How to write a code formatter =====
+reference: https://www.ntietz.com/blog/writing-basic-code-formatter/
+prettier is based on [[https://homepages.inf.ed.ac.uk/wadler/papers/prettier/prettier.pdf|this paper]]
+===== code gen =====
+<code ts>
+type LowcodeInterface = {
+  identifier: string;
+  fields: { name: string, type: string, comment?: string }[];
+  comment?: string;
+}
+function printField(field: { name: string, type: string, comment?: string }) {
+  return (field.comment ? '  /* ' + field.comment + ' */' + "\n" : "")
+          + "  " + field.name + ": " + field.type;
+}
+function printInterface(lowcodeInterface: LowcodeInterface) {
+  return (lowcodeInterface.comment ? '/* ' + lowcodeInterface.comment + " */\n" : "")
+          + "interface " + lowcodeInterface.identifier + " {\n"
+          + lowcodeInterface.fields.map(printField).join('\n')
+          + "\n}";
+}
+export { printInterface };
+</code>