json-as
Version:
The only JSON library you'll need for AssemblyScript. SIMD enabled
107 lines (105 loc) • 4.04 kB
text/typescript
import { isSpace } from "../../../util";
import { COMMA, BRACKET_RIGHT, QUOTE, BRACE_LEFT, BRACE_RIGHT, BRACKET_LEFT, BACK_SLASH, CHAR_T, CHAR_F, CHAR_N } from "../../../custom/chars";
import { JSON } from "../../..";
import { ptrToStr } from "../../../util/ptrToStr";
export function deserializeRawArray(srcStart: usize, srcEnd: usize, dst: usize): JSON.Raw[] {
// console.log("data: " + ptrToStr(srcStart, srcEnd));
const out = changetype<JSON.Raw[]>(dst || changetype<usize>(instantiate<JSON.Raw[]>()));
let lastIndex: usize = 0;
let depth = 0;
srcStart += 2;
while (srcStart < srcEnd) {
let code = load<u16>(srcStart);
if (code == QUOTE) {
lastIndex = srcStart;
srcStart += 2;
while (srcStart < srcEnd) {
code = load<u16>(srcStart);
if (code == QUOTE || isSpace(code)) {
// console.log("Value (string): " + ptrToStr(lastIndex, srcStart));
out.push(JSON.Raw.from(ptrToStr(lastIndex, srcStart + 2)));
// while (isSpace(load<u16>((srcStart += 2)))) {
// /* empty */
// }
srcStart += 4;
break;
}
srcStart += 2;
}
} else if (code - 48 <= 9 || code == 45) {
lastIndex = srcStart;
srcStart += 2;
while (srcStart < srcEnd) {
const code = load<u16>(srcStart);
if (code == COMMA || code == BRACKET_RIGHT || isSpace(code)) {
// console.log("Value (number): " + ptrToStr(lastIndex, srcStart));
out.push(JSON.Raw.from(ptrToStr(lastIndex, srcStart)));
srcStart += 2;
break;
}
srcStart += 2;
}
} else if (code == BRACE_LEFT) {
lastIndex = srcStart;
depth++;
srcStart += 2;
while (srcStart < srcEnd) {
const code = load<u16>(srcStart);
if (code == QUOTE) {
srcStart += 2;
while (!(load<u16>(srcStart) == QUOTE && load<u16>(srcStart - 2) != BACK_SLASH)) srcStart += 2;
} else if (code == BRACE_RIGHT) {
if (--depth == 0) {
// console.log("Value (object): " + ptrToStr(lastIndex, srcStart + 2));
out.push(JSON.Raw.from(ptrToStr(lastIndex, srcStart + 2)));
srcStart += 4;
break;
}
} else if (code == BRACE_LEFT) depth++;
srcStart += 2;
}
} else if (code == BRACKET_LEFT) {
lastIndex = srcStart;
depth++;
srcStart += 2;
while (srcStart < srcEnd) {
const code = load<u16>(srcStart);
if (code == QUOTE) {
srcStart += 2;
while (!(load<u16>(srcStart) == QUOTE && load<u16>(srcStart - 2) != BACK_SLASH)) srcStart += 2;
} else if (code == BRACKET_RIGHT) {
if (--depth == 0) {
// console.log("Value (array): " + ptrToStr(lastIndex, srcStart + 2));
out.push(JSON.Raw.from(ptrToStr(lastIndex, srcStart + 2)));
srcStart += 4;
break;
}
} else if (code == BRACKET_LEFT) depth++;
srcStart += 2;
}
} else if (code == CHAR_T) {
if (load<u64>(srcStart) == 28429475166421108) {
// console.log("Value (true): " + ptrToStr(srcStart, srcStart + 8));
out.push(JSON.Raw.from("true"));
srcStart += 10;
}
} else if (code == CHAR_F) {
if (load<u64>(srcStart, 2) == 28429466576093281) {
// console.log("Value (false): " + ptrToStr(srcStart, srcStart + 10));
out.push(JSON.Raw.from("false"));
srcStart += 12;
}
} else if (code == CHAR_N) {
if (load<u64>(srcStart) == 30399761348886638) {
// console.log("Value (null): " + ptrToStr(srcStart, srcStart + 8));
out.push(JSON.Raw.from("null"));
srcStart += 10;
}
} else if (isSpace(code)) {
srcStart += 2;
} else {
throw new Error("Unexpected character in JSON object '" + String.fromCharCode(code) + "' at position " + (srcEnd - srcStart).toString() + " " + ptrToStr(lastIndex, srcStart + 10));
}
}
return out;
}