From a660c76fb79d7b2272673c0d9ff0d925857988cb Mon Sep 17 00:00:00 2001
From: Ole Morud <ole-morud-git.football131@simplelogin.com>
Date: Fri, 14 Nov 2025 07:30:20 +0100
Subject: [PATCH] WIP

---
 json.c | 131 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 131 insertions(+)
 create mode 100644 json.c

diff --git a/json.c b/json.c
new file mode 100644
index 0000000..b1123e8
--- /dev/null
+++ b/json.c
@@ -0,0 +1,131 @@
+
+#include <stdlib.h>
+#include <stddef.h>
+#include <stdbool.h>
+#include <stdio.h>
+
+#include "s8slice.h"
+
+struct json {
+    struct json_value*  root;
+    struct json_value** ctx;
+    S8Slice             pending_key;
+    bool                has_pending_key;
+};
+
+struct json_value {
+    S8Slice key;
+    struct json_value* next;
+
+    enum {
+        JSON_OBJECT,
+        JSON_ARRAY,
+        JSON_NUMBER,
+        JSON_STRING,
+        JSON_BOOL,
+        JSON_NULL,
+    } kind;
+
+    union {
+        double             number;
+        S8Slice            string;
+        bool               boolean;
+        struct json_value* object_head;
+        struct json_value* array_head;
+    };
+};
+
+static struct json_value* new_value(struct json* j)
+{
+    struct json_value* new = calloc(1, sizeof(struct json_value));
+    if (!new) {
+        perror("calloc");
+        abort();
+    }
+    return new;
+}
+
+void json_init(struct json* j)
+{
+    j->ctx = &j->root;
+}
+
+void json_add_key(struct json* j, S8Slice key)
+{
+    j->has_pending_key = true;
+    j->pending_key = key;
+}
+
+void json_add_value(struct json* j, struct json_value* new)
+{
+    *j->ctx = new;
+    j->ctx = &new->next;
+    /*
+    if (j->has_pending_key) {
+        new->key = j->pending_key;
+        j->has_pending_key = false;
+    }
+    */
+}
+
+void json_add_object(struct json* j)
+{
+    struct json_value* new = new_value(j);
+    new->kind = JSON_OBJECT;
+    json_add_value(j, new);
+    j->ctx = &new->object_head;
+}
+
+void json_add_number(struct json* j, double n)
+{
+    struct json_value* new = new_value(j);
+    new->kind = JSON_NUMBER;
+    new->number = n;
+    json_add_value(j, new);
+}
+
+void json_print_value(struct json_value* val, int depth)
+{
+    if (!val) {
+        return;
+    }
+    for (int i = 0; i < depth; i++) {
+        printf("     ");
+    }
+    switch (val->kind) {
+        case JSON_NUMBER: {
+            printf("%lf,\n", val->number);
+            json_print_value(val->next, depth);
+        } break;
+
+        case JSON_OBJECT: {
+            json_print_value(val->object_head, depth+1);
+        } break;
+            
+        default: {
+            fprintf(stderr, "not implemented");
+            abort();
+        } break;
+    }
+}
+
+void json_print(struct json* j)
+{
+    json_print_value(j->root, 0);
+}
+
+int main()
+{
+    struct json j = {0};
+    json_init(&j);
+
+    json_add_number(&j, 53);
+    
+    json_add_object(&j);
+    
+    json_add_number(&j, 12);
+
+    json_print(&j);
+
+    return EXIT_SUCCESS;
+}