string_scanner

Visão geral do pacote

Orientação gerada a partir de informações públicas. Apenas para referência.

Um pacote Dart que fornece uma classe StringScanner para analisar strings de forma eficiente aplicando uma sequência de padrões. Ele mantém uma posição dentro da string de entrada e permite correspondência incremental, tornando-o ideal para criar parsers personalizados ou processar texto estruturado. O scanner suporta lookahead, pulando espaços em branco e extração baseada em padrões, permitindo lógica de análise limpa e legível. Projetado para uso em compiladores, leitores de arquivos de configuração e implementações de linguagens específicas do domínio (DSL), oferece uma alternativa leve aos motores regex completos quando controle preciso é necessário.

Casos de uso

Analisando arquivos de configuração
Construindo DSLs
Tokenização de fluxos de entrada
Implementando analisadores de sintaxe personalizados
Processamento de dados de texto estruturados

Principais recursos

análise incremental de string
Correspondência baseada em padrões
Recursos de antecipação
Ignorar espaços em branco
rastreamento de posição
API simples para parsers personalizados

Indicado para

Desenvolvedores construindo analisadores
Aqueles que trabalham com formatos de texto estruturado
Projetos que exigem processamento de texto granular
Autores de compiladores ou intérpretes
Aplicações que precisam de tokenização eficiente

Considerações

Não adequado para padrões de regex complexos
Requer definição manual do padrão
Melhor para fluxos de trabalho de análise sequencial
Tratamento de erro embutido limitado
O desempenho depende da complexidade do padrão

Snapshot do README original do repositório-fonte vinculado. Consulte o repositório para o conteúdo mais recente.

Overview

This repository is home to tooling related Dart packages. Generally, this means packages published through the tools.dart.dev publisher that don't naturally belong to other topic monorepos (like dart-lang/build, dart-lang/test, or dart-lang/shelf).

Packages

Package	Description	Issues	Version
api_summary	Creates an API summary for a package.
bazel_worker	Protocol and utilities to implement or invoke persistent bazel workers.
benchmark_harness	The official Dart project benchmark harness.
boolean_selector	A flexible syntax for boolean expressions, based on a simplified version of Dart's expression syntax.
browser_launcher	Provides a standardized way to launch web browsers for testing and tools.
cli_config	A library to take config values from configuration files, CLI arguments, and environment variables.
cli_util	A library to help in building Dart command-line apps.
clock	A fakeable wrapper for dart:core clock APIs.
code_builder	A fluent, builder-based library for generating valid Dart code.
coverage	Coverage data manipulation and formatting
csslib	A library for parsing and analyzing CSS (Cascading Style Sheets).
extension_discovery	A convention and utilities for package extension discovery.
file	A pluggable, mockable file system abstraction for Dart.
file_testing	Testing utilities for package:file.
glob	A library to perform Bash-style file and directory globbing.
graphs	Graph algorithms that operate on graphs in any representation.
html	APIs for parsing and manipulating HTML content outside the browser.
io	Utilities for the Dart VM Runtime including support for ANSI colors, file copying, and standard exit code values.
json_rpc_2	Utilities to write a client or server using the JSON-RPC 2.0 spec.
markdown	A portable Markdown library written in Dart that can parse Markdown into HTML.
mime	Utilities for handling media (MIME) types, including determining a type from a file extension and file contents.
oauth2	A client library for authenticating with a remote service via OAuth2 on behalf of a user, and making authorized HTTP requests with the user's OAuth2 credentials.
package_config	Support for reading and writing Dart Package Configuration files.
pool	Manage a finite pool of resources. Useful for controlling concurrent file system or network requests.
process	A pluggable, mockable process invocation abstraction for Dart.
pub_semver	Versions and version constraints implementing pub's versioning policy. This is very similar to vanilla semver, with a few corner cases.
pubspec_parse	Simple package for parsing pubspec.yaml files with a type-safe API and rich error reporting.
source_map_stack_trace	A package for applying source maps to stack traces.
source_maps	A library to programmatically manipulate source map files.
source_span	Provides a standard representation for source code locations and spans.
sse	Provides client and server functionality for setting up bi-directional communication through Server Sent Events (SSE) and corresponding POST requests.
stack_trace	A package for manipulating stack traces and printing them readably.
stream_channel	An abstraction for two-way communication channels based on the Dart Stream class.
stream_transform	A collection of utilities to transform and manipulate streams.
string_scanner	A class for parsing strings using a sequence of patterns.
term_glyph	Useful Unicode glyphs and ASCII substitutes.
test_reflective_loader	Support for discovering tests and test suites using reflection.
timing	A simple package for tracking the performance of synchronous and asynchronous actions.
unified_analytics	A package for logging analytics for all Dart and Flutter related tooling to Google Analytics.
watcher	A file system watcher. It monitors changes to contents of directories and sends notifications when files have been added, removed, or modified.
yaml	A parser for YAML, a human-friendly data serialization standard
yaml_edit	A library for YAML manipulation with comment and whitespace preservation.