package cas.cs4tb3.mellowd.parser;
import org.antlr.v4.runtime.Token;A parse exception is the base exception for errors during parsing. It has information about the location of the error for describing the error. It also stores these values to improve IDE support in the future. Programmatic compilation can catch the exception and highlight the error directly.
public class ParseException extends RuntimeException {
private int start;
private int line;
private int posInLine;
private String text;
private String message;
public ParseException(Token token) {
this(token.getStartIndex(), token.getCharPositionInLine(), token.getLine(), token.getText());
}
public ParseException(Token token, String message) {
this(token.getStartIndex(), token.getCharPositionInLine(), token.getLine(), token.getText(), message);
}
public ParseException(int start, int posInLine, int lineNum, String text) {
this(start, posInLine, lineNum, text, "");
}
public ParseException(int start, int posInLine, int lineNum, String text, String message) {
this.start = start;
this.line = lineNum;
this.posInLine = posInLine;
this.text = text;
this.message = "line " + lineNum + "@" + posInLine + ":\"" + text + "\". " + message;
}
public int getStart() {
return start;
}
public int getLine() {
return line;
}
public int getPosInLine() {
return posInLine;
}
public String getText() {
return text;
}
@Override
public String getMessage() {
return message;
}
}