mirror of
https://git.do.srb2.org/STJr/UltimateZoneBuilder.git
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304 lines
14 KiB
C#
Executable file
304 lines
14 KiB
C#
Executable file
using CodeImp.DoomBuilder.Data;
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Text;
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namespace CodeImp.DoomBuilder.ZDoom
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{
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public sealed class ZScriptStateStructure : StateStructure
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{
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ZScriptToken TryReadSprite(ZScriptParser parser, Stream stream, ZScriptTokenizer tokenizer)
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{
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// this is a hack to read #### and ----.
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// also [\]
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string specialinvalid = "-#";
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string outs = "";
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long cpos = stream.Position;
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for (int i = 0; ; i++)
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{
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cpos = stream.Position;
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ZScriptToken token = tokenizer.ReadToken(true);
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if ((token == null) ||
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(token.Type != ZScriptTokenType.Invalid) ||
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(token.Value == ";") ||
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((outs.Length > 0 && token.Value[0] != outs[0]) && specialinvalid.Contains(token.Value[0])))
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{
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if (outs.Length == 0 && (token.Type == ZScriptTokenType.String || token.Type == ZScriptTokenType.Name))
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return token;
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stream.Position = cpos;
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break;
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}
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outs += token.Value[0];
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}
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if (outs.Length > 0)
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{
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ZScriptToken tok = new ZScriptToken();
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tok.Type = ZScriptTokenType.String;
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tok.Value = outs;
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return tok;
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}
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stream.Position = cpos;
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return null;
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}
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internal ZScriptStateStructure(ActorStructure actor, ZDTextParser zdparser) : base(actor, zdparser)
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{
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ZScriptParser parser = (ZScriptParser)zdparser;
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Stream stream = parser.DataStream;
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ZScriptTokenizer tokenizer = new ZScriptTokenizer(parser.DataReader);
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parser.tokenizer = tokenizer;
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// todo: parse stuff
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//
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string[] control_keywords = new string[] { "goto", "loop", "wait", "fail", "stop" };
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while (true)
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{
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// expect identifier or string.
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// if it's an identifier, it can be goto/loop/wait/fail/stop.
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// if it's a string, it's always a sprite name.
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tokenizer.SkipWhitespace();
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long cpos = stream.Position;
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ZScriptToken token = tokenizer.ExpectToken(ZScriptTokenType.Identifier, ZScriptTokenType.String, ZScriptTokenType.CloseCurly);
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if (token == null || !token.IsValid)
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{
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ZScriptToken _token = TryReadSprite(parser, stream, tokenizer);
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if (_token == null)
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{
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parser.ReportError("Expected identifier or string, got " + ((Object)token ?? "<null>").ToString());
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return;
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}
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token = _token;
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}
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if (token.Type == ZScriptTokenType.CloseCurly)
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{
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stream.Position--;
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return; // done
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}
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else if (token.Type == ZScriptTokenType.Identifier)
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{
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string s_keyword = token.Value.ToLowerInvariant();
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if (control_keywords.Contains(s_keyword))
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{
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if (s_keyword == "goto") // just use decorate goto here. should work. but check for semicolon!
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{
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gotostate = new ZScriptStateGoto(actor, parser);
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parser.tokenizer = tokenizer;
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}
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//parser.LogWarning(string.Format("keyword {0}", s_keyword));
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tokenizer.SkipWhitespace();
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token = tokenizer.ExpectToken(ZScriptTokenType.Semicolon);
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if (token == null || !token.IsValid)
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{
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parser.ReportError("Expected ;, got " + ((Object)token ?? "<null>").ToString());
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return;
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}
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continue;
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}
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}
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// make sure it's not a label of the next state. if it is, break out.
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long cpos2 = stream.Position; // local rewind point
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ZScriptToken token2 = tokenizer.ExpectToken(ZScriptTokenType.Colon, ZScriptTokenType.Dot);
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bool nextstate = (token2 != null && token2.IsValid);
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stream.Position = cpos2; // rewind to before state label read
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if (nextstate)
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{
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stream.Position = cpos;
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break;
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}
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// it's a frame definition. read it.
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string spritename = token.Value.ToLowerInvariant();
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if (spritename.Length != 4)
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{
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parser.ReportError("Sprite name should be exactly 4 characters long (got " + spritename + ")");
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return;
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}
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tokenizer.SkipWhitespace();
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token = TryReadSprite(parser, stream, tokenizer);
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if (token == null)
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{
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parser.ReportError("Expected sprite frame(s)");
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return;
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}
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string spriteframes = token.Value;
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//parser.LogWarning(string.Format("sprite {0} {1}", spritename, spriteframes));
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// duration
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int duration;
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tokenizer.SkipWhitespace();
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// this can be a function call, or a constant.
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token = tokenizer.ExpectToken(ZScriptTokenType.Identifier);
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if (token != null && token.IsValid)
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{
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tokenizer.SkipWhitespace();
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token = tokenizer.ExpectToken(ZScriptTokenType.OpenParen);
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if (token != null && token.IsValid)
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{
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List<ZScriptToken> tokens = parser.ParseExpression(true);
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tokenizer.SkipWhitespace();
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token = tokenizer.ExpectToken(ZScriptTokenType.CloseParen);
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if (token == null || !token.IsValid)
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{
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parser.ReportError("Expected ), got " + ((Object)token ?? "<null>").ToString());
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return;
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}
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}
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}
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else
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{
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if (!parser.ParseInteger(out duration))
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return;
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}
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// now, it can also contain BRIGHT, LIGHT(), OFFSET()
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string[] allspecials = new string[] { "bright", "light", "offset", "fast", "slow", "nodelay", "canraise" };
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HashSet<string> specials = new HashSet<string>();
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// maybe something else. I don't know.
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FrameInfo info = new FrameInfo();
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// Make the sprite name
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string realspritename = (spritename + spriteframes[0]).ToUpperInvariant();
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// Ignore some odd ZDoom things
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if (/*!realspritename.StartsWith("TNT1") && */!realspritename.StartsWith("----") && !realspritename.Contains("#")) // [ZZ] some actors have only TNT1 state and receive a random image because of this
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{
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info.Sprite = realspritename; //mxd
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sprites.Add(info);
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}
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while (true)
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{
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tokenizer.SkipWhitespace();
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cpos2 = stream.Position;
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token = tokenizer.ExpectToken(ZScriptTokenType.Identifier, ZScriptTokenType.Semicolon, ZScriptTokenType.OpenCurly);
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if (token == null || !token.IsValid)
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{
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parser.ReportError("Expected identifier, ;, or {, got " + ((Object)token ?? "<null>").ToString());
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return;
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}
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// if it's opencurly, it means that everything else is an anonymous block.
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// skip/parse that.
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// if it's semicolon, it means end of the frame.
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// if it's BRIGHT, LIGHT() or OFFSET(), it should be processed.
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// if it's something else (but identifier), then it's an action function call, process it.
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if (token.Type == ZScriptTokenType.OpenCurly)
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{
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stream.Position--;
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if (!parser.SkipBlock())
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return;
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break; // this block is done
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}
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else if (token.Type == ZScriptTokenType.Semicolon)
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{
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break; // done
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}
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else // identifier
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{
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string special = token.Value.ToLowerInvariant();
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if (allspecials.Contains(special))
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{
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if (specials.Contains(special))
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{
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parser.ReportError("'" + special + "' cannot be used twice");
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return;
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}
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specials.Add(special);
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if (special == "bright")
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{
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info.Bright = true;
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}
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else if (special == "light" || special == "offset")
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{
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tokenizer.SkipWhitespace();
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token = tokenizer.ExpectToken(ZScriptTokenType.OpenParen);
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if (token == null || !token.IsValid)
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{
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parser.ReportError("Expected (, got " + ((Object)token ?? "<null>").ToString());
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return;
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}
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List<ZScriptToken> tokens = parser.ParseExpression(true);
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tokenizer.SkipWhitespace();
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token = tokenizer.ExpectToken(ZScriptTokenType.CloseParen);
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if (token == null || !token.IsValid)
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{
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parser.ReportError("Expected ), got " + ((Object)token ?? "<null>").ToString());
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return;
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}
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// parse the light expression.
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if (special == "light")
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{
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if (tokens.Count != 1 || (tokens[0].Type != ZScriptTokenType.String && tokens[0].Type != ZScriptTokenType.Identifier))
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{
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parser.ReportError("Light() special takes one string argument");
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return;
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}
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info.LightName = tokens[0].Value;
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}
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}
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}
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else
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{
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//
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stream.Position = cpos2;
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string actionfunction = parser.ParseDottedIdentifier();
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//parser.LogWarning("actionfunction = " + actionfunction);
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if (actionfunction == null)
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return;
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//
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tokenizer.SkipWhitespace();
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token = tokenizer.ExpectToken(ZScriptTokenType.OpenParen);
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if (token != null && token.IsValid)
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{
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List<ZScriptToken> tokens = parser.ParseExpression(true);
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tokenizer.SkipWhitespace();
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token = tokenizer.ExpectToken(ZScriptTokenType.CloseParen);
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if (token == null || !token.IsValid)
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{
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parser.ReportError("Expected ), got " + ((Object)token ?? "<null>").ToString());
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return;
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}
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// possibly do something with the arguments? not now though.
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}
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// expect semicolon and break.
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tokenizer.SkipWhitespace();
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token = tokenizer.ExpectToken(ZScriptTokenType.Semicolon);
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if (token == null || !token.IsValid)
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{
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parser.ReportError("Expected ;, got " + ((Object)token ?? "<null>").ToString());
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return;
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}
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break;
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} // if not special
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} // if identifier
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} // frame parsing loop (inner)
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} // state parsing loop (outer)
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}
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}
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}
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