/** For testing; builds trees, does sem anal */
public Grammar(String fileName, String grammarText, @Nullable ANTLRToolListener listener)
throws org.antlr.runtime.RecognitionException {
this.text = grammarText;
this.fileName = fileName;
this.tool = new Tool();
this.tool.addListener(listener);
org.antlr.runtime.ANTLRStringStream in = new org.antlr.runtime.ANTLRStringStream(grammarText);
in.name = fileName;
this.ast = tool.load(in);
if (ast == null) return;
// ensure each node has pointer to surrounding grammar
final Grammar thiz = this;
TreeVisitor v = new TreeVisitor(new GrammarASTAdaptor());
v.visit(
ast,
new TreeVisitorAction() {
@Override
public Object pre(Object t) {
((GrammarAST) t).g = thiz;
return t;
}
@Override
public Object post(Object t) {
return t;
}
});
initTokenSymbolTables();
tool.process(this, false);
}
/** For testing; builds trees, does sem anal */
public Grammar(
String fileName,
String grammarText,
Grammar tokenVocabSource,
@Nullable ANTLRToolListener listener)
throws org.antlr.runtime.RecognitionException {
this.text = grammarText;
this.fileName = fileName;
this.tool = new Tool();
this.tool.addListener(listener);
org.antlr.runtime.ANTLRStringStream in = new org.antlr.runtime.ANTLRStringStream(grammarText);
in.name = fileName;
this.ast = tool.parse(fileName, in);
if (ast == null) {
throw new UnsupportedOperationException();
}
if (ast.tokenStream == null) {
throw new IllegalStateException("expected ast to have a token stream");
}
this.tokenStream = ast.tokenStream;
// ensure each node has pointer to surrounding grammar
final Grammar thiz = this;
org.antlr.runtime.tree.TreeVisitor v =
new org.antlr.runtime.tree.TreeVisitor(new GrammarASTAdaptor());
v.visit(
ast,
new org.antlr.runtime.tree.TreeVisitorAction() {
@Override
public Object pre(Object t) {
((GrammarAST) t).g = thiz;
return t;
}
@Override
public Object post(Object t) {
return t;
}
});
initTokenSymbolTables();
if (tokenVocabSource != null) {
importVocab(tokenVocabSource);
}
tool.process(this, false);
}