commit | f7a656fdaaab069fc6f8c9d34d3205ce6100dfb1 | [log] [tgz] |
---|---|---|
author | dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> | Sun Apr 02 19:54:26 2023 -0700 |
committer | GitHub <noreply@github.com> | Sun Apr 02 19:54:26 2023 -0700 |
tree | 81d6a1fc6dd46c0e41d631e88d88fa51295e23fa | |
parent | fe8c3016646221248732cb4033809a65c00b58a4 [diff] |
Bump dart-lang/setup-dart from 1.4.0 to 1.5.0 (#56) Bumps [dart-lang/setup-dart](https://github.com/dart-lang/setup-dart) from 1.4.0 to 1.5.0. - [Release notes](https://github.com/dart-lang/setup-dart/releases) - [Changelog](https://github.com/dart-lang/setup-dart/blob/main/CHANGELOG.md) - [Commits](https://github.com/dart-lang/setup-dart/compare/a57a6c04cf7d4840e88432aad6281d1e125f0d46...d6a63dab3335f427404425de0fbfed4686d93c4f) --- updated-dependencies: - dependency-name: dart-lang/setup-dart dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
This package exposes a StringScanner
type that makes it easy to parse a string using a series of Pattern
s. For example:
import 'dart:math' as math; import 'package:string_scanner/string_scanner.dart'; num parseNumber(String source) { // Scan a number ("1", "1.5", "-3"). final scanner = StringScanner(source); // [Scanner.scan] tries to consume a [Pattern] and returns whether or not it // succeeded. It will move the scan pointer past the end of the pattern. final negative = scanner.scan('-'); // [Scanner.expect] consumes a [Pattern] and throws a [FormatError] if it // fails. Like [Scanner.scan], it will move the scan pointer forward. scanner.expect(RegExp(r'\d+')); // [Scanner.lastMatch] holds the [MatchData] for the most recent call to // [Scanner.scan], [Scanner.expect], or [Scanner.matches]. var number = num.parse(scanner.lastMatch![0]!); if (scanner.scan('.')) { scanner.expect(RegExp(r'\d+')); final decimal = scanner.lastMatch![0]!; number += int.parse(decimal) / math.pow(10, decimal.length); } // [Scanner.expectDone] will throw a [FormatError] if there's any input that // hasn't yet been consumed. scanner.expectDone(); return (negative ? -1 : 1) * number; }