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#include <iostream>
#include <fstream>
#include "LexTokenStream.hpp"
#include "JavaRecognizer.hpp"
#include "JavaTreeParser.hpp"
ANTLR_USING_NAMESPACE(std)
ANTLR_USING_NAMESPACE(antlr)
static void parseFile(const string& f);
static void doTreeAction(const string& f, RefAST t, ASTFactory* factory);
int main(int argc,char* argv[])
{
// Use a try/catch block for parser exceptions
try {
// if we have at least one command-line argument
if ( argc > 1 )
{
cerr << "Parsing..." << endl;
// for each file specified on the command line
for( int i = 1; i < argc; i++ )
{
cerr << " " << argv[i] << endl;
parseFile(argv[i]);
}
}
else
{
cerr << "Usage: " << argv[0]
<< " <file name(s)>" << endl;
}
}
catch( ANTLRException& e )
{
cerr << "exception: " << e.getMessage() << endl;
return -1;
}
catch( exception& e )
{
cerr << "exception: " << e.what() << endl;
return -1;
}
return 0;
}
// Here's where we do the real work...
static void parseFile(const string& f)
{
try {
FILE* fp = fopen(f.c_str(),"r");
// Create a scanner that reads from the input stream
LexTokenStream lexer(fp);
// Create a parser that reads from the scanner
JavaRecognizer parser(lexer);
ASTFactory ast_factory;
parser.initializeASTFactory(ast_factory);
parser.setASTFactory(&ast_factory);
// start parsing at the compilationUnit rule
parser.compilationUnit();
fclose(fp);
// do something with the tree
doTreeAction( f, parser.getAST(), &ast_factory );
}
catch (exception& e) {
cerr << "parser exception: " << e.what() << endl;
}
}
static void doTreeAction(const string&, RefAST t, ASTFactory* factory )
{
if ( t==nullAST )
return;
JavaTreeParser tparse;
tparse.initializeASTFactory(*factory);
tparse.setASTFactory(factory);
try {
tparse.compilationUnit(t);
// System.out.println("successful walk of result AST for "+f);
}
catch (RecognitionException& e) {
cerr << e.getMessage() << endl;
}
}
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