不建议使用ANTLRInputStream和ANTLRFileStream，有哪些替代方法? [英] ANTLRInputStream and ANTLRFileStream are deprecated, what are the alternatives?

问题描述

如果我使用

ANTLRFileStream antlrFileStream = new ANTLRFileStream("myfile.testlang");

或

ANTLRInputStream input = new ANTLRInputStream( new FileInputStream("myfile.testlang") );

编译器均显示两个类的弃用错误，替代方法是什么?

Compiler shows deprecation error for both the classes what is alternative?

推荐答案

您可以使用CharStreams类而不是下面不推荐使用的类.

You can use the CharStreams class instead of the deprecated classes as below.

CharStream codePointCharStream = CharStreams.fromFileName("myfile.testlang");
TESTLANGLexer lexer = new TESTLANGLexer(codePointCharStream);
TESTLANGParser parser = new TESTLANGParser(new CommonTokenStream(lexer));
parser.addParseListener(new TESTLANGEventListener());

// Start parsing
parser.testlangFile(); 

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