Python25Compiler.cs :  » IDEs » MonoDevelop » PyBinding » Compiler » C# / CSharp Open Source

// Python25Compiler.cs
//
// Copyright (c) 2008 Christian Hergert <chris@dronelabs.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

using System;
using System.Diagnostics;
using System.IO;
using System.Text.RegularExpressions;

using MonoDevelop.Core;
using MonoDevelop.Projects;
using MonoDevelop.Projects.CodeGeneration;

using PyBinding.Runtime;

namespace PyBinding.Compiler{
  public class Python25Compiler : IPythonCompiler
  {
    static readonly string s_CompileFormat = "-c \"import py_compile; py_compile.compile('{0}','{1}c');\"";
    static readonly string s_OptimizedCompileFormat = "-O -c \"import py_compile; py_compile.compile('{0}','{1}o');\"";
    
    IPythonRuntime m_Runtime = null;
    Regex m_WarningRegex;
    Regex m_ErrorRegex;
    
    public IPythonRuntime Runtime {
      get {
        return this.m_Runtime;
      }
      set {
        this.m_Runtime = value;
      }
    }
    
    public Python25Compiler ()
    {
      m_WarningRegex = new Regex ("(?<file>.*):(?<line>\\d+): Warning: (?<message>.*)");
      m_ErrorRegex = new Regex ("  File \"(?<file>.*)\", line (?<line>\\d+)");
    }
    
    public void Compile (PythonProject project,
                         FilePath fileName,
                         PythonConfiguration config,
                         BuildResult result)
    {
      if (String.IsNullOrEmpty (fileName))
        throw new ArgumentNullException ("fileName");
      else if (config == null)
        throw new ArgumentNullException ("config");
      else if (result == null)
        throw new ArgumentNullException ("result");
      else if (Runtime == null)
        throw new InvalidOperationException ("No supported runtime!");
      
      // Get our relative path within the project
      if (!fileName.IsChildPathOf (project.BaseDirectory)) {
        Console.WriteLine ("File is not within our project!");
        return;
      }
      
      FilePath relName = fileName.ToRelative (project.BaseDirectory);
      string outFile = relName.ToAbsolute (config.OutputDirectory);
      
      if (!outFile.EndsWith (".py"))
        return;
      
      // Create the destination directory
      FileInfo fileInfo = new FileInfo (outFile);
      if (!fileInfo.Directory.Exists)
        fileInfo.Directory.Create ();
      
      // Create and start our process to generate the byte code
      Process process = BuildCompileProcess (fileName, outFile, config.Optimize);
      process.Start ();
      process.WaitForExit ();
      
      // Parse errors and warnings
      string output = process.StandardError.ReadToEnd ();
      
      // Extract potential Warnings
      foreach (Match m in m_WarningRegex.Matches (output)) {
        string lineNum  = m.Groups[m_WarningRegex.GroupNumberFromName ("line")].Value;
        string message  = m.Groups[m_WarningRegex.GroupNumberFromName ("message")].Value;
        
        result.AddWarning (fileName, Int32.Parse (lineNum), 0, String.Empty, message);
      }
      
      // Extract potential SyntaxError
      foreach (Match m in m_ErrorRegex.Matches (output)) {
        string lineNum = m.Groups[m_ErrorRegex.GroupNumberFromName ("line")].Value;
        result.AddError (fileName, Int32.Parse (lineNum), 0, String.Empty, "SyntaxError");
      }
    }
    
    Process BuildCompileProcess (string fileName, string outFile, bool optimize)
    {
      ProcessStartInfo startInfo = new ProcessStartInfo ();
      startInfo.FileName = this.Runtime.Path;
      startInfo.RedirectStandardError = true;
      startInfo.UseShellExecute = false;
      
      if (optimize)
        startInfo.Arguments = String.Format (s_OptimizedCompileFormat, fileName, outFile);
      else
        startInfo.Arguments = String.Format (s_CompileFormat, fileName, outFile);
      
      Process process = new Process ();
      process.StartInfo = startInfo;
      
      return process;
    }
  }
}