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