[6a3a178] | 1 | import Long from "@xtuc/long";
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| 2 | import parseHexFloat from "@webassemblyjs/floating-point-hex-parser";
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| 3 | import { CompileError } from "@webassemblyjs/helper-api-error";
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| 4 | export function parse32F(sourceString) {
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| 5 | if (isHexLiteral(sourceString)) {
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| 6 | return parseHexFloat(sourceString);
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| 7 | }
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| 8 |
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| 9 | if (isInfLiteral(sourceString)) {
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| 10 | return sourceString[0] === "-" ? -1 : 1;
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| 11 | }
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| 12 |
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| 13 | if (isNanLiteral(sourceString)) {
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| 14 | return (sourceString[0] === "-" ? -1 : 1) * (sourceString.includes(":") ? parseInt(sourceString.substring(sourceString.indexOf(":") + 1), 16) : 0x400000);
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| 15 | }
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| 16 |
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| 17 | return parseFloat(sourceString);
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| 18 | }
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| 19 | export function parse64F(sourceString) {
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| 20 | if (isHexLiteral(sourceString)) {
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| 21 | return parseHexFloat(sourceString);
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| 22 | }
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| 23 |
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| 24 | if (isInfLiteral(sourceString)) {
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| 25 | return sourceString[0] === "-" ? -1 : 1;
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| 26 | }
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| 27 |
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| 28 | if (isNanLiteral(sourceString)) {
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| 29 | return (sourceString[0] === "-" ? -1 : 1) * (sourceString.includes(":") ? parseInt(sourceString.substring(sourceString.indexOf(":") + 1), 16) : 0x8000000000000);
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| 30 | }
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| 31 |
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| 32 | if (isHexLiteral(sourceString)) {
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| 33 | return parseHexFloat(sourceString);
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| 34 | }
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| 35 |
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| 36 | return parseFloat(sourceString);
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| 37 | }
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| 38 | export function parse32I(sourceString) {
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| 39 | var value = 0;
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| 40 |
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| 41 | if (isHexLiteral(sourceString)) {
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| 42 | value = ~~parseInt(sourceString, 16);
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| 43 | } else if (isDecimalExponentLiteral(sourceString)) {
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| 44 | throw new Error("This number literal format is yet to be implemented.");
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| 45 | } else {
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| 46 | value = parseInt(sourceString, 10);
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| 47 | }
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| 48 |
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| 49 | return value;
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| 50 | }
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| 51 | export function parseU32(sourceString) {
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| 52 | var value = parse32I(sourceString);
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| 53 |
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| 54 | if (value < 0) {
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| 55 | throw new CompileError("Illegal value for u32: " + sourceString);
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| 56 | }
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| 57 |
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| 58 | return value;
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| 59 | }
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| 60 | export function parse64I(sourceString) {
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| 61 | var long;
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| 62 |
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| 63 | if (isHexLiteral(sourceString)) {
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| 64 | long = Long.fromString(sourceString, false, 16);
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| 65 | } else if (isDecimalExponentLiteral(sourceString)) {
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| 66 | throw new Error("This number literal format is yet to be implemented.");
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| 67 | } else {
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| 68 | long = Long.fromString(sourceString);
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| 69 | }
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| 70 |
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| 71 | return {
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| 72 | high: long.high,
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| 73 | low: long.low
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| 74 | };
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| 75 | }
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| 76 | var NAN_WORD = /^\+?-?nan/;
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| 77 | var INF_WORD = /^\+?-?inf/;
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| 78 | export function isInfLiteral(sourceString) {
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| 79 | return INF_WORD.test(sourceString.toLowerCase());
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| 80 | }
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| 81 | export function isNanLiteral(sourceString) {
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| 82 | return NAN_WORD.test(sourceString.toLowerCase());
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| 83 | }
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| 84 |
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| 85 | function isDecimalExponentLiteral(sourceString) {
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| 86 | return !isHexLiteral(sourceString) && sourceString.toUpperCase().includes("E");
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| 87 | }
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| 88 |
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| 89 | function isHexLiteral(sourceString) {
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| 90 | return sourceString.substring(0, 2).toUpperCase() === "0X" || sourceString.substring(0, 3).toUpperCase() === "-0X";
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| 91 | } |
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