Can't use StringTemplate grammar with CSharp Target

[DerIltis]

Dear all,

I am currently using ANTLRs C# StringTemplate library to generate some R and Python code.

Now I want to create a developer manual of this creation process and the string templates, and I thought it would be a natural idea to use the ANTLR grammar for StringTemplates (STParser and STLexer under https://github.com/antlr/grammars-v4/tree/master/stringtemplate) to generate a C# parser that will in turn allow me to translate the relations between my string template definitions into a graphviz dot file.

However, I observed that although the grammar for the StringTemplates can be used to generate a C# parser, this C# parser does not compile. I think my problem is related to this open issue reported on Github https://github.com/antlr/grammars-v4/issues/2167, it seems as if this grammar was specifically designed for JAVA.

• STLexer.g4 uses superClass=LexerAdaptor, which is only available in Java.
• STLexer.g4 uses Inline Java calls that refer to this superclass as well.
• STLexer.g4 refers to LexBasic.g4, which uses Inline Java calls to the Java Character Class, namely the toCodePoint Methods.

Points 1 & 2 could easily be fixed by translating the supplemental Java class "LexerAdaptor" to C#, this is more or less straightforward. However, I cannot fix Point 3, because I don't understand the toCodePoint Methods.

Can anyone help me out here?

[kaby76]

Check out java/java9. There's a method in the lexer base class that is a replacement for the toCodePoint() method. Make sure to use Antl4.Runtime.Standard 4.10.1 as opposed to Antlr4.Runtime v4.6.6, which is the now unsupported fork antlr4cs. We don't support that anymore.