/** For testing; builds trees, does sem anal */
public Grammar(string fileName, string grammarText, Grammar tokenVocabSource, [Nullable] ANTLRToolListener listener)
{
this.text = grammarText;
this.fileName = fileName;
this.tool = new AntlrTool();
this.tool.AddListener(listener);
Antlr.Runtime.ANTLRStringStream @in = new Antlr.Runtime.ANTLRStringStream(grammarText);
@in.name = fileName;
this.ast = tool.Parse(fileName, @in);
if (ast == null)
{
throw new NotSupportedException();
}
if (ast.tokenStream == null)
{
throw new InvalidOperationException("expected ast to have a token stream");
}
this.tokenStream = ast.tokenStream;
this.originalTokenStream = this.tokenStream;
// ensure each node has pointer to surrounding grammar
Antlr.Runtime.Tree.TreeVisitor v = new Antlr.Runtime.Tree.TreeVisitor(new GrammarASTAdaptor());
v.Visit(ast, new SetPointersAction(this));
InitTokenSymbolTables();
if (tokenVocabSource != null)
{
ImportVocab(tokenVocabSource);
}
tool.Process(this, false);
}
public Grammar(AntlrTool tool, [NotNull] GrammarRootAST ast)
{
if (ast == null)
{
throw new ArgumentNullException(nameof(ast));
}
if (ast.tokenStream == null)
{
throw new ArgumentException("ast must have a token stream", nameof(ast));
}
this.tool = tool;
this.ast = ast;
this.name = (ast.GetChild(0)).Text;
this.tokenStream = ast.tokenStream;
this.originalTokenStream = this.tokenStream;
InitTokenSymbolTables();
}
