/** Load a javac_state file. */
public static JavacState load(
String[] args,
File binDir,
File gensrcDir,
File headerDir,
boolean permitUnidentifiedArtifacts,
PrintStream out,
PrintStream err) {
JavacState db =
new JavacState(
args, binDir, gensrcDir, headerDir, permitUnidentifiedArtifacts, false, out, err);
Module lastModule = null;
Package lastPackage = null;
Source lastSource = null;
boolean noFileFound = false;
boolean foundCorrectVerNr = false;
boolean newCommandLine = false;
boolean syntaxError = false;
try (BufferedReader in = new BufferedReader(new FileReader(db.javacStateFilename))) {
for (; ; ) {
String l = in.readLine();
if (l == null) break;
if (l.length() >= 3 && l.charAt(1) == ' ') {
char c = l.charAt(0);
if (c == 'M') {
lastModule = db.prev.loadModule(l);
} else if (c == 'P') {
if (lastModule == null) {
syntaxError = true;
break;
}
lastPackage = db.prev.loadPackage(lastModule, l);
} else if (c == 'D') {
if (lastModule == null || lastPackage == null) {
syntaxError = true;
break;
}
lastPackage.loadDependency(l);
} else if (c == 'I') {
if (lastModule == null || lastPackage == null) {
syntaxError = true;
break;
}
lastPackage.loadPubapi(l);
} else if (c == 'A') {
if (lastModule == null || lastPackage == null) {
syntaxError = true;
break;
}
lastPackage.loadArtifact(l);
} else if (c == 'S') {
if (lastModule == null || lastPackage == null) {
syntaxError = true;
break;
}
lastSource = db.prev.loadSource(lastPackage, l, false);
} else if (c == 'G') {
if (lastModule == null || lastPackage == null) {
syntaxError = true;
break;
}
lastSource = db.prev.loadSource(lastPackage, l, true);
} else if (c == 'R') {
String ncmdl = "R " + db.theArgs;
if (!l.equals(ncmdl)) {
newCommandLine = true;
}
} else if (c == '#') {
if (l.startsWith("# javac_state ver ")) {
int sp = l.indexOf(" ", 18);
if (sp != -1) {
String ver = l.substring(18, sp);
if (!ver.equals("0.3")) {
break;
}
foundCorrectVerNr = true;
}
}
}
}
}
} catch (FileNotFoundException e) {
// Silently create a new javac_state file.
noFileFound = true;
} catch (IOException e) {
Log.info("Dropping old javac_state because of errors when reading it.");
db =
new JavacState(
args, binDir, gensrcDir, headerDir, permitUnidentifiedArtifacts, true, out, err);
foundCorrectVerNr = true;
newCommandLine = false;
syntaxError = false;
}
if (foundCorrectVerNr == false && !noFileFound) {
Log.info("Dropping old javac_state since it is of an old version.");
db =
new JavacState(
args, binDir, gensrcDir, headerDir, permitUnidentifiedArtifacts, true, out, err);
} else if (newCommandLine == true && !noFileFound) {
Log.info("Dropping old javac_state since a new command line is used!");
db =
new JavacState(
args, binDir, gensrcDir, headerDir, permitUnidentifiedArtifacts, true, out, err);
} else if (syntaxError == true) {
Log.info("Dropping old javac_state since it contains syntax errors.");
db =
new JavacState(
args, binDir, gensrcDir, headerDir, permitUnidentifiedArtifacts, true, out, err);
}
db.prev.calculateDependents();
return db;
}
