/**
* skip space and tabulation and comment
*
* @return true if success, false if end of file
*/
protected boolean skipInvalid() throws IOException {
if (strLine == null) return false;
boolean ret = false;
int emtyLines = 0;
CommentBlock cb = null;
out:
while (true) {
// read until not empty line
while (column >= strLine.length()) {
strLine = stream.readLine();
if (strLine == null) break out; // end of file
column = 0;
line++;
if (line > 1) emtyLines++;
}
// check comment
if (column < (strLine.length() - 1)
&& strLine.charAt(column) == '/'
&& (strLine.charAt(column + 1) == '/' || strLine.charAt(column + 1) == '*')) {
if (strLine.charAt(column + 1) == '/') {
// line comment
if (!parseSymbol) {
if (cb == null) {
cb = new CommentBlock(line);
}
// for(int i =0; i < emtyLines; i++) {
if (emtyLines > 0) {
cb.commentLines.add(""); // add empty lines as comment
}
emtyLines = 0;
cb.commentLines.add(strLine.substring(column));
}
strLine = stream.readLine();
if (strLine == null) break out; // read end of file
column = -1;
line++;
} else {
// block comment
while (true) {
if (!parseSymbol) {
if (cb == null) {
cb = new CommentBlock(line);
}
emtyLines = 0;
cb.commentLines.add(strLine.substring(column));
}
column = strLine.indexOf("*/");
if (column >= 0) {
column += 2; // skip comment end
break;
}
strLine = stream.readLine();
if (strLine == null) break out; // read end of file
column = 0;
line++;
}
}
} else if (lastToken != null
&& lastToken.kind == SEMICOLON
&& strLine.charAt(column) == ';') {
continue; // ignore several continuous semicolon
} else if (!Character.isWhitespace(strLine.charAt(column))) {
ret = true;
break; // break when not white space character
}
column++;
}
if (cb != null) {
// for(int i =0; i < emtyLines; i++) {
if (emtyLines > 0) {
cb.commentLines.add(""); // add empty lines as comment
}
cb.endLine = line - 1;
comments.add(cb);
}
return ret;
}
