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break parser::tokenize in parts
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@27454 a592a061-630c-0410-9148-cb99ea01b6c8
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@ -351,6 +351,82 @@ string const Parser::verbatimEnvironment(string const & name)
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}
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void Parser::tokenize_one(istream & is)
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{
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char c;
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if (!is.get(c))
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return;
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//cerr << "reading c: " << c << "\n";
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switch (catcode(c)) {
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case catSpace: {
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string s(1, c);
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while (is.get(c) && catcode(c) == catSpace)
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s += c;
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if (catcode(c) != catSpace)
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is.putback(c);
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push_back(Token(s, catSpace));
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break;
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}
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case catNewline: {
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++lineno_;
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string s(1, getNewline(is, c));
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while (is.get(c) && catcode(c) == catNewline) {
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++lineno_;
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s += getNewline(is, c);
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}
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if (catcode(c) != catNewline)
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is.putback(c);
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push_back(Token(s, catNewline));
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break;
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}
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case catComment: {
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// We don't treat "%\n" combinations here specially because
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// we want to preserve them in the preamble
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string s;
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while (is.get(c) && catcode(c) != catNewline)
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s += c;
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// handle possible DOS line ending
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if (catcode(c) == catNewline)
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c = getNewline(is, c);
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// Note: The '%' at the beginning and the '\n' at the end
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// of the comment are not stored.
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++lineno_;
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push_back(Token(s, catComment));
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break;
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}
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case catEscape: {
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is.get(c);
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if (!is) {
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error("unexpected end of input");
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} else {
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string s(1, c);
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if (catcode(c) == catLetter) {
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// collect letters
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while (is.get(c) && catcode(c) == catLetter)
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s += c;
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if (catcode(c) != catLetter)
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is.putback(c);
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}
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push_back(Token(s, catEscape));
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}
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break;
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}
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case catIgnore: {
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cerr << "ignoring a char: " << int(c) << "\n";
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break;
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}
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default:
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push_back(Token(c, catcode(c)));
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}
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}
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void Parser::tokenize(istream & is)
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{
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static bool init_done = false;
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@ -360,77 +436,8 @@ void Parser::tokenize(istream & is)
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init_done = true;
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}
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char c;
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while (is.get(c)) {
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//cerr << "reading c: " << c << "\n";
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switch (catcode(c)) {
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case catSpace: {
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string s(1, c);
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while (is.get(c) && catcode(c) == catSpace)
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s += c;
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if (catcode(c) != catSpace)
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is.putback(c);
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push_back(Token(s, catSpace));
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break;
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}
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case catNewline: {
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++lineno_;
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string s(1, getNewline(is, c));
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while (is.get(c) && catcode(c) == catNewline) {
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++lineno_;
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s += getNewline(is, c);
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}
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if (catcode(c) != catNewline)
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is.putback(c);
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push_back(Token(s, catNewline));
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break;
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}
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case catComment: {
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// We don't treat "%\n" combinations here specially because
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// we want to preserve them in the preamble
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string s;
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while (is.get(c) && catcode(c) != catNewline)
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s += c;
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// handle possible DOS line ending
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if (catcode(c) == catNewline)
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c = getNewline(is, c);
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// Note: The '%' at the beginning and the '\n' at the end
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// of the comment are not stored.
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++lineno_;
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push_back(Token(s, catComment));
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break;
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}
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case catEscape: {
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is.get(c);
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if (!is) {
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error("unexpected end of input");
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} else {
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string s(1, c);
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if (catcode(c) == catLetter) {
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// collect letters
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while (is.get(c) && catcode(c) == catLetter)
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s += c;
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if (catcode(c) != catLetter)
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is.putback(c);
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}
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push_back(Token(s, catEscape));
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}
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break;
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}
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case catIgnore: {
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cerr << "ignoring a char: " << int(c) << "\n";
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break;
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}
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default:
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push_back(Token(c, catcode(c)));
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}
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}
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while (is)
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tokenize_one(is);
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}
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@ -174,6 +174,8 @@ public:
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char getChar();
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///
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void error(std::string const & msg);
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/// Parses one token from \p is
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void tokenize_one(std::istream & is);
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/// Parses \p is into tokens
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void tokenize(std::istream & is);
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///
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