mirror of
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292 lines
13 KiB
C#
292 lines
13 KiB
C#
//
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// Copyright (C) 2009 the Open Toolkit (http://www.opentk.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all 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 OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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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.RegularExpressions;
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using System.Xml.Linq;
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using System.Diagnostics;
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namespace CHeaderToXML
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{
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// Todo: Array parameters are copied as-is, e.g.: int foo[4] -> <param type="int" name="foo[4]" />.
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// This should become <param type="int*" name="foo" count="4" />.
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// Todo: Fails to parse ES extension headers, which mix enum and function definitions.
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// Parses ES and CL header files.
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sealed class ESCLParser
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{
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Regex extensions = new Regex("(ARB|EXT|AMD|NV|OES|QCOM)", RegexOptions.RightToLeft | RegexOptions.Compiled);
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Regex array_size = new Regex(@"\[.+\]", RegexOptions.RightToLeft | RegexOptions.Compiled);
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Regex EnumToken = new Regex(@"^#define \w+\s+\w+$", RegexOptions.Compiled);
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public ESCLParser()
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{
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}
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public string Prefix {get; set;}
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public string Version {get; set;}
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public IEnumerable<XElement> Parse(string filename)
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{
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return Parse(File.ReadAllLines(filename));
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}
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public IEnumerable<XElement> Parse(string[] lines)
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{
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char[] splitters = new char[] { ' ', '\t', ',', '(', ')', ';', '\n', '\r' };
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// Line splitter
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Func<string, string[]> split = line =>
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line.Split(splitters, StringSplitOptions.RemoveEmptyEntries);
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// Adds new enum to the accumulator (acc)
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Func<string, List<XElement>, List<XElement>> enum_name = (line, acc) =>
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{
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Func<string, string[]> get_tokens = (_) =>
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line.Trim("/*. ".ToCharArray()).Split(" _-+".ToCharArray(), StringSplitOptions.RemoveEmptyEntries).Select(t =>
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{
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switch (t.ToLower())
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{
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case ("bitfield"): return "Flags";
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default:
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if (t.ToLower() == Prefix)
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return "";
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else
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return t;
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}
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/* gmcs bug 336258 */ return "";
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}).ToArray();
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Func<string[], string> get_name = tokens =>
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{
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// Some comments do not indicate enums. Cull them!
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if (tokens[0].StartsWith("$"))
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return null;
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// Some names consist of more than one tokens. Concatenate them.
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return tokens.Aggregate(
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"",
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(string n, string token) =>
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{
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n += String.IsNullOrEmpty(token) ? "" : Char.ToUpper(token[0]).ToString() + token.Substring(1);
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return n;
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},
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n => n);
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};
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Func<string, string> translate_name = name =>
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{
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// Patch some names that are known to be problematic
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switch (name)
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{
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case "OpenGLEScoreversions":
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case "EGLVersioning":
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case "OpenCLVersion": return "Version";
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case "ShaderPrecision-SpecifiedTypes": return "ShaderPrecision";
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case "Texturecombine+dot3": return "TextureCombine";
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case "MacroNamesAndCorrespondingValuesDefinedByOpenCL": return null;
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default: return name;
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}
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};
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Func<string, List<XElement>> add_enum = @enum =>
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{
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switch (@enum)
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{
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case null:
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case "":
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return acc;
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default:
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acc.Add(new XElement("enum", new XAttribute("name", @enum)));
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return acc;
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}
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};
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return add_enum(translate_name(get_name(get_tokens(line))));
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};
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// Adds new token to last enum in accumulator
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Func<string, List<XElement>, List<XElement>> enum_token = (line, acc) =>
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{
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if (EnumToken.IsMatch(line))
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{
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if (acc.Count == 0 || acc.Last().Name.LocalName != "enum")
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acc.Add(new XElement("enum", new XAttribute("name", "Unknown")));
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var tokens = split(line);
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// Check whether this is an include guard (e.g. #define __OPENCL_CL_H)
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if (tokens[1].StartsWith("__"))
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return acc;
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acc[acc.Count - 1].Add(new XElement("token",
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new XAttribute("name", tokens[1].Substring(Prefix.Length + 1)), // removes prefix
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new XAttribute("value", tokens[2])));
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}
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return acc;
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};
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// Parses a function declaration
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var function_string = ""; // Used to concatenate functions that are split in different lines. (e.g. "void\nclFoo(int /* a */,\nint b);")
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Func<string, List<XElement>, List<XElement>> function = (line, acc) =>
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{
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if (!line.EndsWith(";"))
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{
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function_string += line + " ";
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return acc;
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}
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line = function_string + line;
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function_string = "";
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Func<string, string> GetExtension = name =>
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{
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var match = extensions.Match(name);
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return match != null && String.IsNullOrEmpty(match.Value) ? "Core" : match.Value;
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};
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var words = line.Split(splitters, StringSplitOptions.RemoveEmptyEntries);
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//var words = line.Replace("/*", "").Replace("*/", "").Split(" ()".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
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// ES does not start methods with 'extern', while CL does.
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// Remove the 'extern' keyword to create a single code-path.
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if (words[0] == "extern")
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words = words.Skip(1).ToArray();
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string rettype = null;
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string funcname = null;
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GetFunctionNameAndType(words, out funcname, out rettype);
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var fun =
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new
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{
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Name = funcname,
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Return = rettype,
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Version = Version,
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Extension = GetExtension(funcname),
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Profile = String.Empty,
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Parameters =
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from item in line.Split("()".ToCharArray(), StringSplitOptions.RemoveEmptyEntries)[1].Split(",".ToCharArray(), StringSplitOptions.RemoveEmptyEntries)
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let tokens = item.Trim().Split(' ')
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let param_name = (tokens.Last().Trim() != "*/" ? tokens.Last() : tokens[tokens.Length - 2]).Trim()
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let param_type = (tokens.First().Trim() != "const" ? tokens.First().Trim() : tokens[tokens.Length - 2]).Trim()
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let has_array_size = array_size.IsMatch(param_name)
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let indirection_level = (from c in param_name where c == '*' select c).Count() + (from c in param_type where c == '*' select c).Count() + (has_array_size ? 1 : 0)
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let pointers = new string[] { "*", "*", "*", "*" } // for adding indirection levels (pointers) to param_type
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where tokens.Length > 1
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select new
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{
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Name = (has_array_size ? array_size.Replace(param_name, "") : param_name).Replace("*", ""),
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Type = param_type.Replace("*", "") + String.Join("", pointers, 0, indirection_level),
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Count = has_array_size ? Int32.Parse(array_size.Match(param_name).Value.Trim('[', ']')) : 0
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}
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};
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XElement func = new XElement("function", new XAttribute("name", fun.Name));
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func.Add(new XAttribute("extension", fun.Extension));
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func.Add(new XAttribute("profile", fun.Profile));
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func.Add(new XAttribute("category", fun.Version));
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func.Add(new XAttribute("version", fun.Version));
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func.Add(new XElement("returns", new XAttribute("type", fun.Return)));
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foreach (var p in fun.Parameters)
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{
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var param = new XElement("param", new XAttribute("type", p.Type), new XAttribute("name", p.Name));
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if (p.Count > 0)
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param.Add(new XAttribute("count", p.Count));
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func.Add(param);
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}
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acc.Add(func);
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return acc;
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};
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Func<string, bool> is_comment = line => line.StartsWith("/*") || line.StartsWith("//");
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Func<string, bool> is_enum = line => {
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if (!is_comment(line))
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return false;
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// Some enum tokens are commented out and should not be confused with new enum declarations.
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// Since tokens are always in ALL_CAPS, while enum names always contain at least one lower case
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// character, we'll try to use this information to distinguish between the two.
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// Warning: rather fragile.
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if (Regex.IsMatch(line, @"/\*\s+([A-Z]+_?[0-9]*_?)+\s+\*/"))
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return false;
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var toks = split(line);
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return toks.Length > 1;// && toks[1].StartsWith("GL");
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};
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Func<string, bool> is_function = line =>
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(line.StartsWith("GL_APICALL") || line.StartsWith("GL_API") ||
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line.StartsWith("GLAPI") || line.StartsWith("EGLAPI") ||
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line.StartsWith("extern CL_API_ENTRY"));
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var signatures = lines.Aggregate(
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new List<XElement>(),
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(List<XElement> acc, string line) =>
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{
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return
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is_function(line) || !String.IsNullOrEmpty(function_string) ? function(line, acc) :
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is_enum(line) ? enum_name(line, acc) :
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enum_token(line, acc);
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},
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acc =>
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from elem in acc
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where !elem.IsEmpty
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select elem);
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return signatures;
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}
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void GetFunctionNameAndType(string[] words, out string funcname, out string rettype)
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{
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funcname = null;
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rettype = null;
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bool inRettype = false;
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bool quit = false;
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for (int i = 0; !quit && i < words.Length; ++i) {
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switch (words [i]) {
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case "const":
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// ignore
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break;
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case "GL_API":
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inRettype = true;
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break;
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case "GL_APIENTRY":
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inRettype = false;
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funcname = words [i+1].Substring(Prefix.Length);
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quit = true;
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break;
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default:
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if (inRettype)
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rettype += words [i];
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break;
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}
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}
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}
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}
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} |