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https://git.do.srb2.org/STJr/ZoneBuilder.git
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LuaObjectParser now recognizes -- and --[[ ]]-- comments.
This commit is contained in:
MascaraSnake
parent
2925986234
commit
ee1233d642
2 changed files with 345 additions and 6 deletions
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@ -230,6 +230,345 @@ namespace CodeImp.DoomBuilder.SRB2
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return !this.HasError;
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}
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// This skips whitespace on the stream, placing the read
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// position right before the first non-whitespace character
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// Returns false when the end of the stream is reached
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protected internal override bool SkipWhitespace(bool skipnewline)
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{
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int offset = skipnewline ? 0 : 1;
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char c;
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prevstreamposition = datastream.Position; //mxd
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do
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{
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if (datastream.Position == datastream.Length) return false;
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c = (char)datareader.ReadByte();
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// Check if this is comment
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if (c == '/')
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{
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if (datastream.Position == datastream.Length) return false;
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char c2 = (char)datareader.ReadByte();
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if (c2 == '/')
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{
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// Check if not a special comment with a token
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if (datastream.Position == datastream.Length) return false;
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char c3 = (char)datareader.ReadByte();
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if (c3 != '$')
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{
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// Skip entire line
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char c4 = ' ';
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while ((c4 != '\n') && (datastream.Position < datastream.Length)) { c4 = (char)datareader.ReadByte(); }
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c = c4;
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}
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else
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{
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// Not a comment
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c = c3;
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}
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}
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else if (c2 == '*')
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{
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// Skip until */
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char c4, c3 = '\0';
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prevstreamposition = datastream.Position; //mxd
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do
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{
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if (datastream.Position == datastream.Length) //mxd
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{
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// ZDoom doesn't give even a warning message about this, so we shouldn't report error or fail parsing.
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General.ErrorLogger.Add(ErrorType.Warning, "Lua warning in '" + sourcename + "', line " + GetCurrentLineNumber() + ". Block comment is not closed.");
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return false;
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}
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c4 = c3;
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c3 = (char)datareader.ReadByte();
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}
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while ((c4 != '*') || (c3 != '/'));
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c = ' ';
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}
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else
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{
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// Not a comment, rewind from reading c2
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datastream.Seek(-1, SeekOrigin.Current);
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}
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}
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if (c == '-')
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{
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if (datastream.Position == datastream.Length) return false;
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char c2 = (char)datareader.ReadByte();
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if (c2 == '-')
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{
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if (datastream.Position == datastream.Length) return false;
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char c3 = (char)datareader.ReadByte();
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if (c3 == '[')
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{
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if (datastream.Position == datastream.Length) return false;
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char c4 = (char)datareader.ReadByte();
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if (c4 == '[')
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{
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//Skip until ]]--
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char c5 = '\0';
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char c6 = '\0';
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char c7 = '\0';
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char c8 = '\0';
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prevstreamposition = datastream.Position; //mxd
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do
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{
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if (datastream.Position == datastream.Length) //mxd
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{
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General.ErrorLogger.Add(ErrorType.Warning, "Lua warning in '" + sourcename + "', line " + GetCurrentLineNumber() + ". Block comment is not closed.");
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return false;
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}
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c5 = c6;
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c6 = c7;
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c7 = c8;
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c8 = (char)datareader.ReadByte();
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}
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while ((c8 != '-') || (c7 != '-') || (c6 != ']') || (c5 != ']'));
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c = ' ';
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}
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else
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{
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// Not a multiline comment, rewind from reading c4
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datastream.Seek(-1, SeekOrigin.Current);
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}
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}
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while ((c3 != '\n') && (datastream.Position < datastream.Length)) { c3 = (char)datareader.ReadByte(); }
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c = c3;
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}
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else
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{
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// Not a comment, rewind from reading c2
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datastream.Seek(-1, SeekOrigin.Current);
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}
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}
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}
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while (whitespace.IndexOf(c, offset) > -1);
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// Go one character back so we can read this non-whitespace character again
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datastream.Seek(-1, SeekOrigin.Current);
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return true;
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}
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protected internal override string ReadToken(bool multiline)
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{
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//mxd. Return empty string when the end of the stream has been reached
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if (datastream.Position == datastream.Length) return string.Empty;
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//mxd. Store starting position
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prevstreamposition = datastream.Position;
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string token = "";
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bool quotedstring = false;
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// Start reading
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char c = (char)datareader.ReadByte();
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while (!IsWhitespace(c) || quotedstring || IsSpecialToken(c))
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{
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//mxd. Break at newline?
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if (!multiline && c == '\r')
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{
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// Go one character back so line number is correct
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datastream.Seek(-1, SeekOrigin.Current);
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return token;
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}
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// Special token?
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if (!quotedstring && IsSpecialToken(c))
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{
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// Not reading a token yet?
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if (token.Length == 0)
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{
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// This is our whole token
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token += c;
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break;
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}
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else
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{
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// This is a new token and shouldn't be read now
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// Go one character back so we can read this token again
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datastream.Seek(-1, SeekOrigin.Current);
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break;
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}
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}
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else
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{
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// Quote?
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if (c == '"')
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{
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// Quote to end the string?
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if (quotedstring) quotedstring = false;
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// First character is a quote?
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if (token.Length == 0) quotedstring = true;
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token += c;
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}
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// Potential comment?
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else if ((c == '/') && !quotedstring)
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{
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// Check the next byte
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if (datastream.Position == datastream.Length) return token;
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char c2 = (char)datareader.ReadByte();
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if ((c2 == '/') || (c2 == '*'))
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{
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// This is a comment start, so the token ends here
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// Go two characters back so we can read this comment again
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datastream.Seek(-2, SeekOrigin.Current);
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break;
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}
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else
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{
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// Not a comment
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// Go one character back so we can read this char again
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datastream.Seek(-1, SeekOrigin.Current);
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token += c;
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}
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}
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// Potential comment?
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else if ((c == '-') && !quotedstring)
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{
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// Check the next byte
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if (datastream.Position == datastream.Length) return token;
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char c2 = (char)datareader.ReadByte();
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if (c2 == '-')
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{
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// This is a comment start, so the token ends here
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// Go two characters back so we can read this comment again
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datastream.Seek(-2, SeekOrigin.Current);
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break;
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}
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else
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{
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// Not a comment
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// Go one character back so we can read this char again
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datastream.Seek(-1, SeekOrigin.Current);
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token += c;
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}
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}
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else
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{
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token += c;
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}
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}
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// Next character
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if (datastream.Position < datastream.Length)
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c = (char)datareader.Read();
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else
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break;
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}
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return token;
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}
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// This reads a token (all sequential non-whitespace characters or a single character) using custom set of special tokens
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// Returns null when the end of the stream has been reached (mxd)
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protected internal override string ReadToken(string specialTokens)
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{
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// Return null when the end of the stream has been reached
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if (datastream.Position == datastream.Length) return null;
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//mxd. Store starting position
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prevstreamposition = datastream.Position;
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string token = "";
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bool quotedstring = false;
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// Start reading
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char c = (char)datareader.ReadByte();
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while (!IsWhitespace(c) || quotedstring || specialTokens.IndexOf(c) != -1)
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{
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// Special token?
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if (!quotedstring && specialTokens.IndexOf(c) != -1)
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{
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// Not reading a token yet?
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if (token.Length == 0)
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{
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// This is our whole token
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token += c;
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break;
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}
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// This is a new token and shouldn't be read now
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// Go one character back so we can read this token again
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datastream.Seek(-1, SeekOrigin.Current);
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break;
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}
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else
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{
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// Quote?
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if (c == '"')
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{
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// Quote to end the string?
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if (quotedstring) quotedstring = false;
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// First character is a quote?
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if (token.Length == 0) quotedstring = true;
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token += c;
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}
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// Potential comment?
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else if ((c == '/') && !quotedstring)
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{
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// Check the next byte
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if (datastream.Position == datastream.Length) return token;
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char c2 = (char)datareader.ReadByte();
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if ((c2 == '/') || (c2 == '*'))
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{
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// This is a comment start, so the token ends here
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// Go two characters back so we can read this comment again
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datastream.Seek(-2, SeekOrigin.Current);
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break;
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}
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else
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{
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// Not a comment
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// Go one character back so we can read this char again
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datastream.Seek(-1, SeekOrigin.Current);
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token += c;
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}
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}
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// Potential comment?
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else if ((c == '-') && !quotedstring)
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{
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// Check the next byte
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if (datastream.Position == datastream.Length) return token;
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char c2 = (char)datareader.ReadByte();
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if (c2 == '-')
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{
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// This is a comment start, so the token ends here
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// Go two characters back so we can read this comment again
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datastream.Seek(-2, SeekOrigin.Current);
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break;
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}
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else
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{
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// Not a comment
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// Go one character back so we can read this char again
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datastream.Seek(-1, SeekOrigin.Current);
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token += c;
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}
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}
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else
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{
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token += c;
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}
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}
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// Next character
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if (datastream.Position < datastream.Length)
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c = (char)datareader.Read();
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else
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break;
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}
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return token;
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}
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#endregion
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#region ================== Methods
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@ -54,7 +54,7 @@ namespace CodeImp.DoomBuilder.ZDoom
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protected int errorline;
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protected string errordesc;
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protected string errorsource;
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private long prevstreamposition; //mxd. Text stream position storted before performing ReadToken.
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protected long prevstreamposition; //mxd. Text stream position storted before performing ReadToken.
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#endregion
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@ -116,13 +116,13 @@ namespace CodeImp.DoomBuilder.ZDoom
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}
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// This returns true if the given character is whitespace
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private bool IsWhitespace(char c)
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protected bool IsWhitespace(char c)
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{
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return (whitespace.IndexOf(c) > -1);
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}
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// This returns true if the given character is a special token
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private bool IsSpecialToken(char c)
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protected bool IsSpecialToken(char c)
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{
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return (specialtokens.IndexOf(c) > -1);
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}
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@ -157,7 +157,7 @@ namespace CodeImp.DoomBuilder.ZDoom
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// This skips whitespace on the stream, placing the read
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// position right before the first non-whitespace character
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// Returns false when the end of the stream is reached
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protected internal bool SkipWhitespace(bool skipnewline)
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protected internal virtual bool SkipWhitespace(bool skipnewline)
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{
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int offset = skipnewline ? 0 : 1;
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char c;
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@ -228,7 +228,7 @@ namespace CodeImp.DoomBuilder.ZDoom
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// This reads a token (all sequential non-whitespace characters or a single character)
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// Returns null when the end of the stream has been reached
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protected internal string ReadToken() { return ReadToken(true); } //mxd. Added "multiline" param
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protected internal string ReadToken(bool multiline)
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protected internal virtual string ReadToken(bool multiline)
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{
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//mxd. Return empty string when the end of the stream has been reached
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if(datastream.Position == datastream.Length) return string.Empty;
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@ -321,7 +321,7 @@ namespace CodeImp.DoomBuilder.ZDoom
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// This reads a token (all sequential non-whitespace characters or a single character) using custom set of special tokens
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// Returns null when the end of the stream has been reached (mxd)
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protected internal string ReadToken(string specialTokens)
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protected internal virtual string ReadToken(string specialTokens)
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{
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// Return null when the end of the stream has been reached
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if(datastream.Position == datastream.Length) return null;
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