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PyCodeBlock.cs
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PyCodeBlock.cs
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
namespace Ironbug.PythonConverter
{
public enum PyCodeBlockType
{
Top,
Class,
Constructor,
PropertyGetter,
PropertySetter,
Method,
}
public class PyCodeBlock
{
public string HeaderLine { get; set; }
public PyCodeBlockType Type { get; set; }
public List<string> CodeBlock { get; set; }
public List<PyCodeBlock> ChildBlock { get; set; }
public List<int> SpaceOffsetLevels { get; set; }
public PyCodeBlock()
{
this.CodeBlock = new List<string>();
this.SpaceOffsetLevels = new List<int>();
}
/// <summary>
/// Convert Python code class block to PyClassInfo type
/// </summary>
/// <returns>PyClassInfo</returns>
public PyClassInfo ToPyClassInfo()
{
var pyClass = new PyClassInfo();
//Extract Class Headerline for class name
ExtractClassInfo(ref pyClass, this.HeaderLine);
//Extract Method Headerline for its name, input valuables, return types
if (this.ChildBlock!=null)
{
foreach (var item in this.ChildBlock)
{
var currentBlock = item;
var code = currentBlock.CodeBlock;
var firstLine = code.First();
if (firstLine.Contains("_init_"))
{
ExtractConstractorInfo(ref pyClass, code.First());
}
else if(currentBlock.Type == PyCodeBlockType.Method)
{
ExtractMethodsInfo(ref pyClass, code.First(), code.Last());
}
else if (currentBlock.Type == PyCodeBlockType.PropertyGetter)
{
ExtractPropertyInfo(ref pyClass, code[1]);
}
else if (currentBlock.Type == PyCodeBlockType.PropertySetter)
{
//ignore setter
}
}
}
return pyClass;
}
private static void ExtractClassInfo(ref PyClassInfo pyClass, string ClassHeader)
{
var elements = ExtractElementNames(ClassHeader);
pyClass.ClassName = elements[0];
if (elements.Length > 1)
{
pyClass.BaseClassName = elements[1];
}
}
private static void ExtractPropertyInfo(ref PyClassInfo pyClass, string PropertyHeader)
{
var elements = ExtractElementNames(PropertyHeader);
var property = new PyPropergyInfo();
property.Name = elements[0];
pyClass.Properties.Add(property);
}
private void ExtractConstractorInfo(ref PyClassInfo pyClass, string ConstructorHeader)
{
var elements = ExtractElementNames(ConstructorHeader);
var constructor = new PyConstuctorInfo();
constructor.Name = pyClass.ClassName;
constructor.Inputs.AddRange(ExtractInputsInfo(elements));
pyClass.Constuctor = constructor;
}
/// <summary>
/// Extract method name, inputNames, inputTypes, returnType from plain python method code.
/// </summary>
/// <param name="pyClass"></param>
/// <param name="MethodHeader"></param>
/// <param name="ReturnLine"></param>
private static void ExtractMethodsInfo(ref PyClassInfo pyClass, string MethodHeader, string ReturnLine)
{
var elements = ExtractElementNames(MethodHeader);
var method = new PyMethodInfo();
method.Name = elements[0];
method.Inputs.AddRange(ExtractInputsInfo(elements));
if (ReturnLine.Contains("return"))
{
method.ReturnTypes = ValueTypes.Object;
}
else
{
method.ReturnTypes = ValueTypes.Void;
}
pyClass.Methods.Add(method);
}
private static List<PyValueInfo> ExtractInputsInfo(string[] elements)
{
var inputList = new List<PyValueInfo>();
for (int i = 0; i < elements.Length; i++)
{
if (i == 0)
{
//this is the header's name
}
else
{
var line = elements[i];
var input = new PyValueInfo();
input.ValueType = ValueTypes.Object;
if (line.Contains("="))
{
var items = line.Split('=');
input.Name = items[0];
var defaultValue = items[1].Trim();
if (defaultValue == "True" || defaultValue == "False")
{
input.ValueType = ValueTypes.Bool;
}
}
else
{
input.Name = line;
}
inputList.Add(input);
}
}
return inputList;
}
private static string[] ExtractElementNames(string inputString)
{
string input = inputString;
string regex = @"[,\u0028:\u0029 ]|class|self|def";
string[] results = Regex.Split(input, regex);
results = results.Where(_ => _ != "").ToArray();
return results;
}
}
}