@Override
public int parseString(RubyLexer lexer) throws java.io.IOException {
ByteList str = null;
ByteList eos = nd_lit;
int len = nd_lit.length() - 1;
boolean indent = (flags & STR_FUNC_INDENT) != 0;
int c = lexer.nextc();
if (c == EOF) return error(lexer, len, str, eos);
// Found end marker for this heredoc
if (lexer.was_bol() && lexer.whole_match_p(nd_lit, indent)) {
lexer.heredoc_restore(this);
return Tokens.tSTRING_END;
}
if ((flags & STR_FUNC_EXPAND) == 0) {
do {
ByteList lbuf = lexer.lex_lastline;
int p = 0;
int pend = lexer.lex_pend;
if (pend > p) {
switch (lexer.p(pend - 1)) {
case '\n':
pend--;
if (pend == p || lexer.p(pend - 1) == '\r') {
pend++;
break;
}
break;
case '\r':
pend--;
break;
}
}
if (lexer.getHeredocIndent() > 0) {
for (long i = 0; p + i < pend && lexer.update_heredoc_indent(lexer.p(p)); i++) {}
lexer.setHeredocLineIndent(0);
}
if (str != null) {
str.append(lbuf.makeShared(p, pend - p));
} else {
str = new ByteList(lbuf.makeShared(p, pend - p));
}
if (pend < lexer.lex_pend) str.append('\n');
lexer.lex_goto_eol();
if (lexer.getHeredocIndent() > 0) {
lexer.setValue(str);
return Tokens.tSTRING_CONTENT;
}
// MRI null checks str in this case but it is unconditionally non-null?
if (lexer.nextc() == -1) return error(lexer, len, null, eos);
} while (!lexer.whole_match_p(eos, indent));
} else {
ByteList tok = new ByteList();
tok.setEncoding(lexer.getEncoding());
if (c == '#') {
switch (c = lexer.nextc()) {
case '$':
case '@':
lexer.pushback(c);
return Tokens.tSTRING_DVAR;
case '{':
lexer.commandStart = true;
return Tokens.tSTRING_DBEG;
}
tok.append('#');
}
// MRI has extra pointer which makes our code look a little bit more strange in comparison
do {
lexer.pushback(c);
Encoding enc[] = new Encoding[1];
enc[0] = lexer.getEncoding();
if ((c = new StringTerm(flags, '\0', '\n').parseStringIntoBuffer(lexer, tok, enc)) == EOF) {
if (lexer.eofp) return error(lexer, len, str, eos);
return restore(lexer);
}
if (c != '\n') {
lexer.setValue(lexer.createStr(tok, 0));
return Tokens.tSTRING_CONTENT;
}
tok.append(lexer.nextc());
if (lexer.getHeredocIndent() > 0) {
lexer.lex_goto_eol();
lexer.setValue(lexer.createStr(tok, 0));
return Tokens.tSTRING_CONTENT;
}
if ((c = lexer.nextc()) == EOF) return error(lexer, len, str, eos);
} while (!lexer.whole_match_p(eos, indent));
str = tok;
}
lexer.heredoc_restore(this);
lexer.setStrTerm(new StringTerm(-1, '\0', '\0'));
lexer.setValue(lexer.createStr(str, 0));
return Tokens.tSTRING_CONTENT;
}
protected int restore(RubyLexer lexer) {
lexer.heredoc_restore(this);
lexer.setStrTerm(null);
return EOF;
}