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//
// CodeWriter.cs
//
// Author:
// Iain McCoy (iain@mccoy.id.au)
//
// (C) 2005 Iain McCoy
//
// 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.IO;
using System.Collections;
using System.CodeDom;
using System.CodeDom.Compiler;
namespace Mono.Windows.Serialization {
public class CodeWriter : XamlWriter {
TextWriter writer;
ArrayList objects = new ArrayList();
Hashtable nameClashes = new Hashtable();
int tempIndex = 0;
CodeCompileUnit code;
CodeTypeDeclaration type;
CodeConstructor constructor;
// pushes: the code writer
public CodeWriter(TextWriter writer)
{
this.writer = writer;
code = new CodeCompileUnit();
objects.Add(code);
}
// pushes: a CodeVariableReferenceExpression to the present
// instance
public void CreateTopLevel(string parentName, string className)
{
Type parent = Type.GetType(parentName);
int endNamespaceName = className.LastIndexOf(".");
string clrNamespace;
if (endNamespaceName < 0)
clrNamespace = "DefaultNamespace";
else
clrNamespace = className.Substring(0,
endNamespaceName);
CodeNamespace ns = new CodeNamespace(clrNamespace);
((CodeCompileUnit)objects[0]).Namespaces.Add(ns);
type = new CodeTypeDeclaration(className);
type.BaseTypes.Add(new CodeTypeReference(parent));
constructor = new CodeConstructor();
type.Members.Add(constructor);
ns.Types.Add(type);
objects.Add(new CodeThisReferenceExpression());
}
// bottom of stack holds CodeVariableReferenceExpression
// pushes a reference to the new current type
public void CreateObject(string typeName)
{
Type type = Type.GetType(typeName);
string varName = Char.ToLower(type.Name[0]) + type.Name.Substring(1);
// make sure something sensible happens when class
// names start with a lowercase letter
if (varName == type.Name)
varName = "_" + varName;
if (!nameClashes.ContainsKey(varName))
nameClashes[varName] = 0;
else {
nameClashes[varName] = 1 + (int)nameClashes[varName];
varName += (int)nameClashes[varName];
}
CodeVariableDeclarationStatement declaration =
new CodeVariableDeclarationStatement(type,
varName,
new CodeObjectCreateExpression(type));
CodeVariableReferenceExpression varRef = new CodeVariableReferenceExpression(varName);
CodeMethodInvokeExpression addChild = new CodeMethodInvokeExpression(
(CodeExpression)objects[objects.Count - 1],
"AddChild",
varRef);
constructor.Statements.Add(declaration);
constructor.Statements.Add(addChild);
objects.Add(varRef);
}
// top of stack is a reference to an object
// pushes a reference to the property
public void CreateProperty(string propertyName)
{
CodePropertyReferenceExpression prop = new CodePropertyReferenceExpression(
(CodeExpression)objects[objects.Count - 1],
propertyName);
objects.Add(prop);
}
// top of stack is a reference to an object
// pushes the name of the instance to attach to, the name of
// the property, and a reference to an object
public void CreateAttachedProperty(string attachedTo, string propertyName, string typeName)
{
Type t = Type.GetType(typeName);
Type typeAttachedTo = Type.GetType(attachedTo);
string name = "temp";
if (tempIndex != 0)
name += tempIndex;
CodeVariableDeclarationStatement decl = new CodeVariableDeclarationStatement(t, name);
constructor.Statements.Add(decl);
CodeMethodInvokeExpression call = new CodeMethodInvokeExpression(
new CodeTypeReferenceExpression(typeAttachedTo),
"Set" + propertyName,
(CodeExpression)objects[objects.Count - 1],
new CodeVariableReferenceExpression(name));
objects.Add(call);
objects.Add(new CodeVariableReferenceExpression(name));
}
// pops 2 items: the name of the property, and the object to attach to
public void EndAttachedProperty()
{
objects.RemoveAt(objects.Count - 1);
CodeExpression call = (CodeExpression)(objects[objects.Count - 1]);
objects.RemoveAt(objects.Count - 1);
constructor.Statements.Add(call);
}
// top of stack must be an object reference
public void CreateElementText(string text)
{
CodeVariableReferenceExpression var = (CodeVariableReferenceExpression)objects[objects.Count - 1];
CodeMethodInvokeExpression call = new CodeMethodInvokeExpression(
var,
"AddText",
new CodePrimitiveExpression(text));
constructor.Statements.Add(call);
}
// top of stack is reference to a property
public void CreatePropertyText(string text, string converter)
{
CreateAttachedPropertyText(text, converter);
}
public void CreateAttachedPropertyText(string text, string converter)
{
CodeExpression expr = new CodePrimitiveExpression(text);
if (converter != null) {
Type t = Type.GetType(converter);
expr = new CodeCastExpression(
new CodeTypeReference(typeof(int)),
new CodeMethodInvokeExpression(
new CodeObjectCreateExpression(t),
"ConvertFromString",
expr));
}
CodeAssignStatement assignment = new CodeAssignStatement(
(CodeExpression)objects[objects.Count - 1],
expr);
constructor.Statements.Add(assignment);
}
public void EndObject()
{
objects.RemoveAt(objects.Count - 1);
}
public void EndProperty()
{
objects.RemoveAt(objects.Count - 1);
}
public void Finish()
{
ICodeGenerator generator = (new Microsoft.CSharp.CSharpCodeProvider()).CreateGenerator();
generator.GenerateCodeFromCompileUnit(code, writer, null);
writer.Close();
}
public void CreateCode(string code)
{
type.Members.Add(new CodeSnippetTypeMember(code));
}
}
}
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