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#include <iostream>
#include "DemoJavaLexer.hpp"
#include "DemoJavaDocLexer.hpp"
#include "DemoJavaParser.hpp"
#include "antlr/TokenStreamSelector.hpp"
int main()
{
ANTLR_USING_NAMESPACE(std)
ANTLR_USING_NAMESPACE(antlr)
// Define a selector that can switch from java to javadoc
TokenStreamSelector selector;
try {
// attach java lexer to the input stream, which also creates a shared input state object
DemoJavaLexer main(cin);
main.setSelector(&selector);
// create javadoc lexer; attach to same shared input state as java lexer
DemoJavaDocLexer doclexer(main.getInputState());
doclexer.setSelector(&selector);
// notify selector about various lexers; name them for convenient reference later
selector.addInputStream(&main, "main");
selector.addInputStream(&doclexer, "doclexer");
selector.select("main"); // start with main java lexer
// Create parser attached to selector
DemoJavaParser parser(selector);
// Pull in one or more int decls with optional javadoc
parser.input();
// spin thru all tokens generated via the SELECTOR.
RefToken t;
while ( (t=selector.nextToken())->getType()!=Token::EOF_TYPE ) {
cout << t->toString() << endl;
}
}
catch( ANTLRException& e )
{
cerr << "exception: " << e.getMessage() << endl;
return -1;
}
catch( exception& e )
{
cerr << "exception: " << e.what() << endl;
return -1;
}
return 0;
}
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