dimgigov
49264b5d06
- JsonValue struct supporting null, bool, number, string, array, object - Json_Parse(s: String) -> JsonValue: recursive descent parser - Json_Stringify(v: JsonValue) -> String: recursive serializer - Access helpers: Json_ObjectGet, Json_ObjectSet, Json_ObjectHas, Json_ArrayGet, Json_ArrayPush, Json_ArrayLen, Json_ObjectLen - Constructors: Json_Null, Json_Bool, Json_Number, Json_String, Json_Array, Json_Object - Type accessors: Json_IsNull, Json_AsBool, Json_AsNumber, Json_AsString - examples/json.bux: demonstrates parse, access, build programmatically - Add os_time, process, json to test-examples suite
34 lines
1.2 KiB
Plaintext
34 lines
1.2 KiB
Plaintext
// Json - Parse and stringify JSON
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import Std::Io::{PrintLine};
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import Std::Json;
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import Std::Fmt::{Fmt_Fmt1, Fmt_FmtInt};
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func Main() -> int {
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PrintLine("=== Json Demo ===");
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let s: String = "{\"name\":\"Bux\",\"count\":42,\"items\":[\"a\",\"b\",\"c\"]}";
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let j: JsonValue = Json_Parse(s);
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PrintLine("Parsed and stringified:");
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PrintLine(Json_Stringify(j));
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PrintLine("\nAccess fields:");
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PrintLine(Fmt_Fmt1("name = {0}", Json_AsString(Json_ObjectGet(j, "name"))));
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PrintLine(Fmt_FmtInt("count = {0}", Json_AsNumber(Json_ObjectGet(j, "count")) as int64));
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let items: JsonValue = Json_ObjectGet(j, "items");
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PrintLine(Fmt_Fmt1("items[0] = {0}", Json_AsString(Json_ArrayGet(items, 0))));
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PrintLine(Fmt_Fmt1("items[1] = {0}", Json_AsString(Json_ArrayGet(items, 1))));
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PrintLine("\nBuild JSON programmatically:");
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var obj: JsonValue = Json_Object();
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Json_ObjectSet(&obj, "lang", Json_String("Bux"));
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Json_ObjectSet(&obj, "year", Json_Number(2024.0));
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var arr: JsonValue = Json_Array();
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Json_ArrayPush(&arr, Json_String("fast"));
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Json_ArrayPush(&arr, Json_String("safe"));
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Json_ObjectSet(&obj, "tags", arr);
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PrintLine(Json_Stringify(obj));
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return 0;
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}
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