Function parseOperand

libraries/p5.js:2984–3022

(parser, b0)

// Parse a `CFF` DICT operand.
function parseOperand(parser, b0) {
    var b1;
    var b2;
    var b3;
    var b4;
    if (b0 === 28) {
        b1 = parser.parseByte();
        b2 = parser.parseByte();
        return b1 << 8 | b2;
    }

    if (b0 === 29) {
        b1 = parser.parseByte();
        b2 = parser.parseByte();
        b3 = parser.parseByte();
        b4 = parser.parseByte();
        return b1 << 24 | b2 << 16 | b3 << 8 | b4;
    }

    if (b0 === 30) {
        return parseFloatOperand(parser);
    }

    if (b0 >= 32 && b0 <= 246) {
        return b0 - 139;
    }

    if (b0 >= 247 && b0 <= 250) {
        b1 = parser.parseByte();
        return (b0 - 247) * 256 + b1 + 108;
    }

    if (b0 >= 251 && b0 <= 254) {
        b1 = parser.parseByte();
        return -(b0 - 251) * 256 - b1 - 108;
    }

    throw new Error('Invalid b0 ' + b0);
}

// Convert the entries returned by `parseDict` to a proper dictionary.
// If a value is a list of one, it is unpacked.