feat(hectic C): json api

package/c/chectic/test/00-logger.c

@@ -35,5 +35,6 @@ int main(void) {
     TEST_RAISE_GENERIC(raise_warn,  LOG_LEVEL_WARN, "WARN");
     TEST_RAISE_GENERIC(raise_exception,  LOG_LEVEL_EXCEPTION, "EXCEPTION");
 
+    printf("%s all tests passed.\n", __FILE__);
     return 0;
 }

package/c/chectic/test/01-arena.c

@@ -56,6 +56,40 @@ void test_arena_strdup() {
   arena_free(&arena);
 }
 
+void test_arena_repstr() {
+  Arena arena = arena_init(128);
+  const char *original = "Hello, World!";
+  // Replace substring starting at index 5, length 3 (", W") with " -"
+  // According to the macro logic, the suffix is taken from original[5+3+1] onward.
+  // That results in: "Hello" + " -" + "rld!" = "Hello -rld!"
+  char *result = arena_repstr(&arena, original, 5, 3, " -");
+  assert(strcmp(result, "Hello -rld!") == 0);
+  arena_free(&arena);
+}
+
+void test_arena_overwrite_detection() {
+  Arena arena = arena_init(128);
+
+  char *s1 = arena_alloc(&arena, 6);
+  strcpy(s1, "hello");
+
+  char *s2 = arena_alloc(&arena, 6);
+  strcpy(s2, "world");
+
+  assert(strcmp(s1, "hello") == 0);
+  assert(strcmp(s2, "world") == 0);
+
+  // Force allocation near capacity
+  void *large = arena_alloc_or_null(&arena, 100);
+  assert(large != NULL || arena.current == arena.begin + arena.capacity); // If NULL, out of memory
+
+  // Check strings again
+  assert(strcmp(s1, "hello") == 0);
+  assert(strcmp(s2, "world") == 0);
+
+  arena_free(&arena);
+}
+
 int main() {
   set_output_color_mode(COLOR_MODE_DISABLE);
   logger_level(LOG_LEVEL_DEBUG);
@@ -66,5 +100,7 @@ int main() {
   test_arena_reset();
   test_arena_null_init();
   test_arena_strdup();
-  printf("All tests passed.\n");
+  test_arena_repstr();
+  test_arena_overwrite_detection();
+  printf("%s all tests passed.\n", __FILE__);
 }

package/c/chectic/test/02-json.c

@@ -0,0 +1,138 @@
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include "chectic.h"
+
+#define ARENA_SIZE 1024 * 1024
+
+// Test 1: Parse JSON object with a string value.
+static void test_parse_json_object(void) {
+    Arena arena = arena_init(ARENA_SIZE);
+    const char *json = "{\"key\":\"value\"}";
+    Json *root = json_parse(&arena, &json);
+    assert(root->type == JSON_OBJECT);
+    Json *child = root->child;
+    assert(child && strcmp(child->key, "key") == 0);
+    assert(child->type == JSON_STRING);
+    assert(strcmp(child->string, "value") == 0);
+    arena_free(&arena);
+}
+
+// Test 2: Parse JSON number.
+static void test_parse_json_number(void) {
+    Arena arena = arena_init(ARENA_SIZE);
+    const char *json = "42";
+    Json *root = json_parse(&arena, &json);
+    assert(root->type == JSON_NUMBER);
+    assert(root->number == 42);
+    arena_free(&arena);
+}
+
+// Test 3: Parse JSON string.
+static void test_parse_json_string(void) {
+    Arena arena = {0};
+    const char *json = "\"hello\"";
+    Json *root = json_parse(&arena, &json);
+    assert(root->type == JSON_STRING);
+    assert(strcmp(root->string, "hello") == 0);
+    arena_free(&arena);
+}
+
+// Test 4: Get object items by key.
+static void test_get_object_items(void) {
+    Arena arena = arena_init(ARENA_SIZE);
+    const char *json = "{\"a\":\"1\", \"b\":2}";
+    Json *root = json_parse(&arena, &json);
+    Json *item_a = json_get_object_item(root, "a");
+    assert(item_a && item_a->type == JSON_STRING);
+    assert(strcmp(item_a->string, "1") == 0);
+    Json *item_b = json_get_object_item(root, "b");
+    assert(item_b && item_b->type == JSON_NUMBER);
+    assert(item_b->number == 2);
+    arena_free(&arena);
+}
+
+// Test 5: Print JSON object.
+static void test_print_json_object(void) {
+    Arena arena = arena_init(ARENA_SIZE);
+    const char *json = "{\"key\":\"value\", \"num\":3.14}";
+    Json *root = json_parse(&arena, &json);
+    char *printed = json_print(&arena, root);
+    assert(strstr(printed, "\"key\":") != NULL);
+    assert(strstr(printed, "\"value\"") != NULL);
+    assert(strstr(printed, "\"num\":") != NULL);
+    assert(strstr(printed, "3.14") != NULL);
+    arena_free(&arena);
+}
+
+// Test 6: Print JSON number.
+static void test_print_json_number(void) {
+    Arena arena = arena_init(ARENA_SIZE);
+    const char *json = "123.456";
+    Json *root = json_parse(&arena, &json);
+    char *printed = json_print(&arena, root);
+    double val = atof(printed);
+    assert(val == 123.456);
+    arena_free(&arena);
+}
+
+// Test 7: Print JSON string.
+static void test_print_json_string(void) {
+    Arena arena = arena_init(ARENA_SIZE);
+    const char *json = "\"test string\"";
+    Json *root = json_parse(&arena, &json);
+    char *printed = json_print(&arena, root);
+    assert(strcmp(printed, "\"test string\"") == 0);
+    arena_free(&arena);
+}
+
+// Test 8: Nested JSON object.
+static void test_nested_json_object(void) {
+    Arena arena = arena_init(1024 * 1024);
+    const char *json = "{\"outer\":{\"inner\":100}}";
+    Json *root = json_parse(&arena, &json);
+    assert(root != NULL);
+    assert(root->type == JSON_OBJECT);
+
+    Json *outer = json_get_object_item(root, "outer");
+    assert(outer != NULL);
+    assert(outer->type == JSON_OBJECT);
+
+    Json *inner = json_get_object_item(outer, "inner");
+    assert(inner != NULL);
+    assert(inner->type == JSON_NUMBER);
+    assert(inner->number == 100);
+
+    arena_free(&arena);
+}
+
+// Test 9: Arena reset and reuse.
+static void test_arena_reset_reuse(void) {
+    Arena arena = arena_init(ARENA_SIZE);
+    const char *json1 = "{\"key\":\"value\"}";
+    Json *root1 = json_parse(&arena, &json1);
+    char *printed1 = json_print(&arena, root1);
+    arena_reset(&arena);
+    const char *json2 = "\"another test\"";
+    Json *root2 = json_parse(&arena, &json2);
+    char *printed2 = json_print(&arena, root2);
+    assert(strcmp(printed2, "\"another test\"") == 0);
+    arena_free(&arena);
+}
+
+int main(void) {
+    test_parse_json_object();
+    test_parse_json_number();
+    test_parse_json_string();
+    test_get_object_items();
+    test_print_json_object();
+    test_print_json_number();
+    test_print_json_string();
+    test_nested_json_object();
+    test_arena_reset_reuse();
+
+    printf("%s all tests passed.\n", __FILE__);
+    return 0;
+}