/**
* Start one module after the other and try to compile the input file. Then generate the assembler
* file and create this file for jasmin.
*/
private static void parseCompile(String input, String fileName)
throws ParserException, LexerException, IOException {
String output; // Init output string
StringReader reader =
new StringReader(input); // Standard routine to start the parser, lexer, ...
PushbackReader r = new PushbackReader(reader, 100);
Lexer l = new Lexer(r);
Parser parser = new Parser(l);
Start start = parser.parse();
// ASTPrinter printer = new ASTPrinter();
// start.apply(printer);
TypeChecker typeChecker = new TypeChecker(); // Starting TypeChecker
start.apply(typeChecker);
CodeGenerator codeGenerator = new CodeGenerator(typeChecker.getSymbolTable());
copySymbolTable(
typeChecker, codeGenerator); // To get all the identifiers copied with an index to CodeGen
start.apply(codeGenerator);
output = createOutput(codeGenerator, fileName);
Writer wout =
new BufferedWriter( // Write everything to the outputfile.j
new OutputStreamWriter(new FileOutputStream(fileName + ".j"), "UTF8"));
wout.append(output);
wout.close();
}
/**
* Copy SymbolTable from the TypeChecker to the CodeGenerator and give it a new index (not
* necessary to know the types any more - they are all correct!)
*/
private static void copySymbolTable(TypeChecker typeChecker, CodeGenerator codeGenerator) {
int i = typeChecker.getSymbolTable().size();
for (String id : typeChecker.getSymbolTable().keySet())
codeGenerator.getSymbolTable().put(id, i--);
}