/**
* @param args
* @param stream
* @param numChRead
* @param outError
* @param printWriter
* @throws IOException
*/
private void compileProgram(File file, String filename, PrintWriter outError) {
Program program;
FileReader stream;
int numChRead;
try {
stream = new FileReader(file);
} catch (FileNotFoundException e) {
String msg = "Something wrong: file does not exist anymore";
outError.println(msg);
return;
}
// one more character for '\0' at the end that will be added by the
// compiler
char[] input = new char[(int) file.length() + 1];
try {
numChRead = stream.read(input, 0, (int) file.length());
if (numChRead != file.length()) {
outError.println("Read error");
stream.close();
return;
}
stream.close();
} catch (IOException e) {
String msg = "Error reading file " + filename;
outError.println(msg);
try {
stream.close();
} catch (IOException e1) {
}
return;
}
Compiler compiler = new Compiler();
program = null;
// the generated code goes to a file and so are the errors
program = compiler.compile(input, outError);
callMetaobjects(filename, program, outError);
if (!program.hasCompilationErrors()) {
String outputFileName;
int lastIndex;
if ((lastIndex = filename.lastIndexOf('.')) == -1) lastIndex = filename.length();
outputFileName = filename.substring(0, lastIndex);
if ((lastIndex = filename.lastIndexOf('\\')) != -1)
outputFileName = filename.substring(lastIndex + 1);
FileOutputStream outputStream;
try {
outputStream = new FileOutputStream(outputFileName + ".c");
} catch (IOException e) {
String msg = "File " + outputFileName + " was not found";
outError.println(msg);
return;
}
PrintWriter printWriter = new PrintWriter(outputStream);
PW pw = new PW();
pw.set(printWriter);
program.genC(pw);
if (printWriter.checkError()) {
outError.println("There was an error in the output");
}
printWriter.close();
}
}
public void genC(PW pw) {
pw.print("return ");
expr.genC(pw, false);
pw.println(";");
}