在组合语法中无法识别导入语法中的词法分析器模式。单击“在testRig中运行”Antlrworks2后出现编译错误

Question

我正在使用Antlrworks2。lexer语法中定义了“词汇模式”。我有一个组合语法，它引入了词法分析器语法。从组合语法生成代码后，它将生成两个.java文件。例如:如果我的组合语法文件名是'xyz.g4‘，那么java文件名就是’xyzLexfor.java‘，'xyzParser.java’。但是当我在Antlrworks2中点击'run in TestRig‘时，它会在控制台中显示下面的错误。

Compiling grammar files...
warning: Supported source version 'RELEASE_6' from annotation processor 'org.netbeans.modules.openide.modules.PatchedPublicProcessor' less than -source '1.7'
warning: Supported source version 'RELEASE_6' from annotation processor 'org.netbeans.modules.openide.util.ServiceProviderProcessor' less than -source '1.7'
warning: Supported source version 'RELEASE_6' from annotation processor 'org.netbeans.modules.openide.util.NamedServiceProcessor' less than -source '1.7'
warning: Supported source version 'RELEASE_6' from annotation processor 'org.netbeans.modules.openide.util.NbBundleProcessor' less than -source '1.7'
C:\Users\cc91kor\AppData\Local\Temp\TestRigTask-1361256016169\CDFCombinedGrammarLexer.java:144: error: cannot find symbol
        case 1: _mode = INSIDE_BRACKETS;  break;
                        ^
  symbol:   variable INSIDE_BRACKETS
  location: class CDFCombinedGrammarLexer
C:\Users\cc91kor\AppData\Local\Temp\TestRigTask-1361256016169\CDFCombinedGrammarLexer.java:149: error: cannot find symbol
        case 0: _mode = INSIDE_BRACKETS;  break;
                        ^
  symbol:   variable INSIDE_BRACKETS
  location: class CDFCombinedGrammarLexer
2 errors
4 warnings
Arguments: [CDFCombinedGrammar, vt, -tokens, -tree, -gui, C:\Users\cc91kor\Desktop\vt.txt]
Can't load CDFCombinedGrammar as lexer or parser

正如我在CDFCombinedGrammarLexer.java(在上面的示例xyzLexer.java中)中观察到的那样，“lexical mode”的代码并不存在。我可以在java文件中找到模式的代码，该文件是从实际的lexer文件生成的。

下面是我可以在实际的lexer生成的java文件中看到的代码。

public static final int INSIDE_BRACKETS = 1;
    public static String[] modeNames = {
        "DEFAULT_MODE", "INSIDE_BRACKETS"
    };

有什么帮助吗？我在等待！

提前感谢！

Answer 1

在ANTLR 4中尚不支持导入多模式词法分析器语法。以下问题将跟踪此功能的进度：

Support importing multi-mode lexer grammars