68 lines
2.2 KiB
C
68 lines
2.2 KiB
C
#include "cell.h"
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#include <string.h>
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/* JSON uses JS_KEY_empty for reviver — define locally from public constants */
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#ifndef JS_KEY_empty
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#define JS_KEY_empty ((JSValue)JS_TAG_STRING_IMM)
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#endif
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static JSValue js_cell_json_encode (JSContext *ctx, JSValue this_val, int argc, JSValue *argv) {
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if (argc < 1)
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return JS_RaiseDisrupt (ctx, "json.encode requires at least 1 argument");
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int pretty = argc <= 1 || JS_ToBool (ctx, argv[1]);
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JSValue space = pretty ? JS_NewInt32 (ctx, 2) : JS_NULL;
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JSValue replacer = JS_NULL;
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if (argc > 2 && JS_IsFunction (argv[2]))
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replacer = argv[2];
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else if (argc > 3 && JS_IsArray (argv[3]))
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replacer = argv[3];
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JSValue result = JS_JSONStringify (ctx, argv[0], replacer, space, pretty);
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return result;
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}
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static JSValue js_cell_json_decode (JSContext *ctx, JSValue this_val, int argc, JSValue *argv) {
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if (argc < 1)
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return JS_RaiseDisrupt (ctx, "json.decode requires at least 1 argument");
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if (!JS_IsText (argv[0]))
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return JS_RaiseDisrupt (ctx, "couldn't parse text: not a string");
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const char *str = JS_ToCString (ctx, argv[0]);
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if (!str) return JS_EXCEPTION;
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size_t len = strlen (str);
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JSValue result = JS_ParseJSON (ctx, str, len, "<json>");
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JS_FreeCString (ctx, str);
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/* Apply reviver if provided */
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if (argc > 1 && JS_IsFunction (argv[1]) && !JS_IsException (result)) {
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/* Create wrapper object to pass to reviver */
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JSValue wrapper = JS_NewObject (ctx);
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JS_SetPropertyStr (ctx, wrapper, "", result);
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JSValue holder = wrapper;
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JSValue key = JS_KEY_empty;
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JSValue args[2] = { key, JS_GetProperty (ctx, holder, key) };
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JSValue final = JS_Call (ctx, argv[1], holder, 2, args);
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result = final;
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}
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return result;
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}
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static const JSCFunctionListEntry js_cell_json_funcs[] = {
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JS_CFUNC_DEF ("encode", 1, js_cell_json_encode),
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JS_CFUNC_DEF ("decode", 1, js_cell_json_decode),
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};
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JSValue js_core_json_use (JSContext *ctx) {
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JSGCRef obj_ref;
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JS_PushGCRef (ctx, &obj_ref);
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obj_ref.val = JS_NewObject (ctx);
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JS_SetPropertyFunctionList (ctx, obj_ref.val, js_cell_json_funcs, countof (js_cell_json_funcs));
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JSValue result = obj_ref.val;
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JS_PopGCRef (ctx, &obj_ref);
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return result;
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}
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