/** Parses the source to a CST. You can retrieve it with getCST(). */
public void parse() throws CompilationFailedException {
if (this.phase > Phases.PARSING) {
throw new GroovyBugError("parsing is already complete");
}
if (this.phase == Phases.INITIALIZATION) {
nextPhase();
}
//
// Create a reader on the source and run the parser.
Reader reader = null;
try {
reader = source.getReader();
// lets recreate the parser each time as it tends to keep around state
parserPlugin = getConfiguration().getPluginFactory().createParserPlugin();
cst = parserPlugin.parseCST(this, reader);
sourceSummary = parserPlugin.getSummary();
reader.close();
} catch (IOException e) {
getErrorCollector().addFatalError(new SimpleMessage(e.getMessage(), this));
} finally {
if (reader != null) {
try {
reader.close();
} catch (IOException e) {
}
}
}
}
/**
* Returns a sampling of the source at the specified line and column, of null if it is
* unavailable.
*/
public String getSample(int line, int column, Janitor janitor) {
String sample = null;
String text = source.getLine(line, janitor);
if (text != null) {
if (column > 0) {
String marker = Utilities.repeatString(" ", column - 1) + "^";
if (column > 40) {
int start = column - 30 - 1;
int end = (column + 10 > text.length() ? text.length() : column + 10 - 1);
sample =
" "
+ text.substring(start, end)
+ Utilities.eol()
+ " "
+ marker.substring(start, marker.length());
} else {
sample = " " + text + Utilities.eol() + " " + marker;
}
} else {
sample = text;
}
}
return sample;
}