202 lines
8.7 KiB
C#
202 lines
8.7 KiB
C#
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#region License
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//
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// The Open Toolkit Library License
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//
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// Copyright (c) 2006 - 2010 the Open Toolkit library.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights to
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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// the Software, and to permit persons to whom the Software is furnished to do
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// so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN THE SOFTWARE.
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//
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#endregion
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using System;
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using System.Collections.Generic;
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using System.Text.RegularExpressions;
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using System.Xml.Linq;
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namespace CHeaderToXML
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{
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class GLParser : Parser
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{
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static readonly Regex extensions = new Regex(
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"(ARB|EXT|ATI|NV|SUNX|SUN|SGIS|SGIX|SGI|MESA|3DFX|IBM|GREMEDY|HP|INTEL|PGI|INGR|APPLE|OML|I3D)",
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RegexOptions.RightToLeft | RegexOptions.Compiled);
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static readonly char[] splitters = new char[] { ' ', '\t', ',', '(', ')', ';', '\n', '\r' };
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enum ParserModes { None, Enum, Func };
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ParserModes CurrentMode;
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public override IEnumerable<XElement> Parse(string[] lines)
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{
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XElement current = null;
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foreach (string l in lines)
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{
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// Clean up line for further processing and skip invalid lines.
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string line = l.Replace('\t', ' ').Trim();
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if (!IsValid(line))
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continue;
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string[] words = SplitWords(line);
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if (line.Contains("enum:"))
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{
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// This is a new enum definition
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if (current != null)
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yield return current;
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current = new XElement("enum",
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new XAttribute("name", words[0]));
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CurrentMode = ParserModes.Enum;
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}
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else if (line.StartsWith(words[0] + "("))
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{
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// This is a new function definition
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if (current != null)
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yield return current;
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var match = extensions.Match(words[0]);
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string extension = match != null && String.IsNullOrEmpty(match.Value) ? "Core" : match.Value;
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current = new XElement("function",
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new XAttribute("name", words[0]),
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new XAttribute("extension", extension));
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CurrentMode = ParserModes.Func;
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}
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else if (current != null)
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{
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// This is an addition to the current element (enum or function)
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switch (CurrentMode)
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{
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case ParserModes.Enum:
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if (words[0] == "use")
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{
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current.Add(new XElement("use",
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new XAttribute("enum", words[1]),
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new XAttribute("token", words[2])));
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}
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else if (words[1] == "=")
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{
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current.Add(new XElement("token",
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new XAttribute("name", words[0]),
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new XAttribute("value", words[2])));
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}
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else
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{
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// Typical cause is hand-editing the specs and forgetting to add an '=' sign.
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throw new InvalidOperationException(String.Format(
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"[Error] Invalid constant definition: \"{0}\"", line));
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}
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break;
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case ParserModes.Func:
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switch (words[0])
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{
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case "return": // Line denotes return value
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current.Add(new XElement("returns",
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new XAttribute("type", words[1])));
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break;
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case "param": // Line denotes parameter
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int pointer = words[4].Contains("array") ? 1 : 0;
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pointer += words[4].Contains("reference") ? 1 : 0;
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var elem = new XElement("param",
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new XAttribute("name", words[1]),
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new XAttribute("type", words[2] + PointerLevel(pointer)),
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new XAttribute("flow", words[3] == "in" ? "in" : "out"));
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if (pointer > 0 && words.Length > 5 && words[5].Contains("[1]"))
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elem.Add(new XAttribute("count", 1));
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current.Add(elem);
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break;
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case "version": // Line denotes function version (i.e. 1.0, 1.2, 1.5)
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// GetTexParameterIivEXT and GetTexParameterIuivEXT define two(!) versions (why?)
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var version = current.Attribute("version");
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if (version == null)
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current.Add(new XAttribute("version", words[1]));
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else
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version.Value = words[1];
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break;
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case "category":
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current.Add(new XAttribute("category", words[1]));
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break;
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case "deprecated":
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current.Add(new XAttribute("deprecated", words[1]));
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break;
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}
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break;
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}
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}
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}
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if (current != null)
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{
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yield return current;
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}
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}
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string[] SplitWords(string line)
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{
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return line.Split(splitters, StringSplitOptions.RemoveEmptyEntries);
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}
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bool IsValid(string line)
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{
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return !(String.IsNullOrEmpty(line) ||
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line.StartsWith("#") || // Disregard comments.
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line.StartsWith("passthru") || // Disregard passthru statements.
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line.StartsWith("required-props:") ||
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line.StartsWith("param:") ||
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line.StartsWith("dlflags:") ||
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line.StartsWith("glxflags:") ||
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line.StartsWith("vectorequiv:") ||
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//line.StartsWith("category:") ||
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line.StartsWith("version:") ||
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line.StartsWith("glxsingle:") ||
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line.StartsWith("glxropcode:") ||
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line.StartsWith("glxvendorpriv:") ||
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line.StartsWith("glsflags:") ||
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line.StartsWith("glsopcode:") ||
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line.StartsWith("glsalias:") ||
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line.StartsWith("wglflags:") ||
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line.StartsWith("extension:") ||
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line.StartsWith("alias:") ||
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line.StartsWith("offset:"));
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}
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string PointerLevel(int pointer)
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{
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switch (pointer)
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{
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case 0: return String.Empty;
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case 1: return "*";
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case 2: return "**";
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case 3: return "***";
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case 4: return "****";
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case 5: return "*****";
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default: throw new NotImplementedException();
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}
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}
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}
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}
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