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parseInt compatibility layer around parseI64, see #19

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This commit is contained in:
dcodeIO
2018-01-30 01:26:38 +01:00
parent cae89e0b1f
commit ab5a938ea0
9 changed files with 282 additions and 41 deletions
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27
std/assembly/string.ts
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@ -350,7 +350,30 @@ const enum CharCode {
z = 0x7A
}
export function parseInt(str: String, radix: i32 = 0): i64 {
export function parseInt(str: String, radix: i32 = 0): f64 {
var len: i32 = str.length;
if (!len)
return NaN;
var ptr = changetype<usize>(str) /* + HEAD -> offset */;
var code = <i32>load<u16>(ptr, HEAD);
// pre-check sign
if (code == CharCode.MINUS) {
if (!--len)
return NaN;
} else if (code == CharCode.PLUS) {
if (!--len)
return NaN;
}
// pre-check radix
if (radix && (radix < 2 || radix > 36))
return NaN;
return <f64>parseI64(str, radix);
}
export function parseI64(str: String, radix: i32 = 0): i64 {
var len: i32 = str.length;
if (!len)
return 0; // (NaN)
@ -422,7 +445,7 @@ export function parseInt(str: String, radix: i32 = 0): i64 {
return sign * num;
}
export function parseFloat(str: string): f64 {
export function parseFloat(str: String): f64 {
var len: i32 = str.length;
if (!len)
return NaN;