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package no.eliashaugsbakk.kompilator.assembleAndLink;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import no.eliashaugsbakk.kompilator.IO.File;
import no.eliashaugsbakk.kompilator.IO.FileReaderWriter;
import no.eliashaugsbakk.kompilator.IO.FileReaderWriterException;
import no.eliashaugsbakk.kompilator.CompilationException;
import no.eliashaugsbakk.kompilator.Main;
public class AssemblerAndLinker {
private final FileReaderWriter fileReaderWriter;
public AssemblerAndLinker() {
fileReaderWriter = new FileReaderWriter();
}
public void assembleAndLink(String programName, String assembly) throws CompilationException {
String assemblyFileName = programName + ".s";
String assembledFileName = programName + ".o";
fileReaderWriter.writeFile(new File(assemblyFileName, assembly));
try {
// Assembling using: as -o program.o program.s
ProcessBuilder asPB = new ProcessBuilder("as", "-o", assembledFileName, assemblyFileName);
runProcess(asPB);
} catch (IOException e) {
throw new CompilationException("Kunne ikke starte assembleren", e);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
throw new CompilationException("Ventingen på assembleren ble avbrutt", e);
}
try {
// Linking using GNU linker: ld -o program program.o
ProcessBuilder ldPB = new ProcessBuilder("ld", "-o", programName, assembledFileName);
runProcess(ldPB);
} catch (IOException e) {
throw new CompilationException("Kunne ikke starte lenkeren", e);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
throw new CompilationException("Ventingen på lenkeren ble avbrutt", e);
}
// Clean up
if (!Main.VERBOSE) {
fileReaderWriter.deleteFile(assemblyFileName);
fileReaderWriter.deleteFile(assembledFileName);
}
}
private static void runProcess(ProcessBuilder processBuilder)
throws IOException, InterruptedException, CompilationException {
Process process = processBuilder.start();
process.waitFor();
if (process.exitValue() != 0) {
BufferedReader bufferedReader =
new BufferedReader(new InputStreamReader(process.getErrorStream()));
String line;
while ((line = bufferedReader.readLine()) != null) {
throw new CompilationException("Prosessen mislyktes:\n" + line);
}
bufferedReader.close();
}
}
}
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