index.js
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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.parse32F = parse32F;
exports.parse64F = parse64F;
exports.parse32I = parse32I;
exports.parseU32 = parseU32;
exports.parse64I = parse64I;
exports.isInfLiteral = isInfLiteral;
exports.isNanLiteral = isNanLiteral;
var _long = _interopRequireDefault(require("@xtuc/long"));
var _floatingPointHexParser = _interopRequireDefault(require("@webassemblyjs/floating-point-hex-parser"));
var _helperApiError = require("@webassemblyjs/helper-api-error");
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function parse32F(sourceString) {
if (isHexLiteral(sourceString)) {
return (0, _floatingPointHexParser.default)(sourceString);
}
if (isInfLiteral(sourceString)) {
return sourceString[0] === "-" ? -1 : 1;
}
if (isNanLiteral(sourceString)) {
return (sourceString[0] === "-" ? -1 : 1) * (sourceString.includes(":") ? parseInt(sourceString.substring(sourceString.indexOf(":") + 1), 16) : 0x400000);
}
return parseFloat(sourceString);
}
function parse64F(sourceString) {
if (isHexLiteral(sourceString)) {
return (0, _floatingPointHexParser.default)(sourceString);
}
if (isInfLiteral(sourceString)) {
return sourceString[0] === "-" ? -1 : 1;
}
if (isNanLiteral(sourceString)) {
return (sourceString[0] === "-" ? -1 : 1) * (sourceString.includes(":") ? parseInt(sourceString.substring(sourceString.indexOf(":") + 1), 16) : 0x8000000000000);
}
if (isHexLiteral(sourceString)) {
return (0, _floatingPointHexParser.default)(sourceString);
}
return parseFloat(sourceString);
}
function parse32I(sourceString) {
var value = 0;
if (isHexLiteral(sourceString)) {
value = ~~parseInt(sourceString, 16);
} else if (isDecimalExponentLiteral(sourceString)) {
throw new Error("This number literal format is yet to be implemented.");
} else {
value = parseInt(sourceString, 10);
}
return value;
}
function parseU32(sourceString) {
var value = parse32I(sourceString);
if (value < 0) {
throw new _helperApiError.CompileError("Illegal value for u32: " + sourceString);
}
return value;
}
function parse64I(sourceString) {
var long;
if (isHexLiteral(sourceString)) {
long = _long.default.fromString(sourceString, false, 16);
} else if (isDecimalExponentLiteral(sourceString)) {
throw new Error("This number literal format is yet to be implemented.");
} else {
long = _long.default.fromString(sourceString);
}
return {
high: long.high,
low: long.low
};
}
var NAN_WORD = /^\+?-?nan/;
var INF_WORD = /^\+?-?inf/;
function isInfLiteral(sourceString) {
return INF_WORD.test(sourceString.toLowerCase());
}
function isNanLiteral(sourceString) {
return NAN_WORD.test(sourceString.toLowerCase());
}
function isDecimalExponentLiteral(sourceString) {
return !isHexLiteral(sourceString) && sourceString.toUpperCase().includes("E");
}
function isHexLiteral(sourceString) {
return sourceString.substring(0, 2).toUpperCase() === "0X" || sourceString.substring(0, 3).toUpperCase() === "-0X";
}