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qconrio2015's Introduction

QConRio2015

[Pt-Br] Abrir e rodar o projeto:

[Pt-Br] Passos para criar sua linguagem utilizando ANTL4 e Intellij:

  • Criar projeto baseado no maven.
  • Adicionar o pom.xml contido neste exemplo, por exemplo :).
  • Adicionar o plugin do ANTLR4 (no caso do Intellij é em Settings do projeto -> plugins -> ANTLR 4 Grammar Plugin)
  • Criar um diretório (mesmo nível de onde estarão os java sources) chamado antlr
  • Dentro dele, criar um arquivo nome_da_sua_linguagem.g4 - nesse arquivo será definida a sua gramática

Gerar os arquivos: mvn clean compile

Os arquivos abaixo serão gerados dentro de target->generated-sources -> antlr4:

  • Nome_da_sua_GramaticaLexer - fará a analise léxica, separando a entrada em tokens
  • Nome_da_sua_GramaticaParser - fará a análise sintática.
  • Nome_da_sua_GramaticaParser.StartContext tree = parser.start(); -> parser é Nome_da_sua_GramaticaParser instanciado. O método start chama o start definido na gramática (contida no nome_da_sua_linguagem.g4).

Agora está tudo pronto para a implementação da(s) sua(s) classe(s) responsável(eis) pelos visitors. Neste exemplo, a classe que implementa os visitors da linguagem é a Evaluator.

qconrio2015's People

Contributors

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