/// <summary>
/// Gets the load from file CodeDOM method.
/// </summary>
/// <param name="type">The type CodeTypeDeclaration.</param>
/// <returns>return the codeDom LoadFromFile method</returns>
protected override CodeMemberMethod GetLoadFromFileMethod(CodeTypeDeclaration type)
{
var typeName = GeneratorContext.GeneratorParams.GenericBaseClass.Enabled ? "T" : type.Name;
// ---------------------------------------------
// public static T LoadFromFile(string fileName)
// ---------------------------------------------
var loadFromFileMethod = new CodeMemberMethod
{
Attributes = MemberAttributes.Public | MemberAttributes.Static,
Name = GeneratorContext.GeneratorParams.Serialization.LoadFromFileMethodName
};
loadFromFileMethod.Parameters.Add(new CodeParameterDeclarationExpression(typeof(string), "fileName"));
if (GeneratorContext.GeneratorParams.Serialization.EnableEncoding)
{
loadFromFileMethod.Parameters.Add(new CodeParameterDeclarationExpression(typeof(Encoding), "encoding"));
}
loadFromFileMethod.ReturnType = new CodeTypeReference(typeName);
loadFromFileMethod.Statements.Add(
new CodeVariableDeclarationStatement(
new CodeTypeReference(typeof(IsolatedStorageFile)),
"isoFile",
new CodePrimitiveExpression(null)));
loadFromFileMethod.Statements.Add(
new CodeVariableDeclarationStatement(
new CodeTypeReference(typeof(IsolatedStorageFileStream)),
"isoStream",
new CodePrimitiveExpression(null)));
loadFromFileMethod.Statements.Add(
new CodeVariableDeclarationStatement(
new CodeTypeReference(typeof(StreamReader)),
"sr",
new CodePrimitiveExpression(null)));
var tryStatmanentsCol = new CodeStatementCollection();
var finallyStatmanentsCol = new CodeStatementCollection();
tryStatmanentsCol.Add(
new CodeAssignStatement(
new CodeVariableReferenceExpression("isoFile"),
CodeDomHelper.GetInvokeMethod("IsolatedStorageFile", "GetUserStoreForApplication")));
tryStatmanentsCol.Add(
new CodeAssignStatement(
new CodeVariableReferenceExpression("isoStream"),
new CodeObjectCreateExpression(
typeof(IsolatedStorageFileStream),
new CodeExpression[]
{
new CodeArgumentReferenceExpression("fileName"),
CodeDomHelper.GetEnum("FileMode", "Open"),
new CodeVariableReferenceExpression("isoFile")
})));
CodeExpression[] codeParamExpression;
if (GeneratorContext.GeneratorParams.Serialization.EnableEncoding)
{
codeParamExpression = new CodeExpression[] { new CodeVariableReferenceExpression("isoStream"), new CodeVariableReferenceExpression("encoding") };
}
else
{
codeParamExpression = new CodeExpression[] { new CodeVariableReferenceExpression("isoStream") };
}
tryStatmanentsCol.Add(
new CodeAssignStatement(
new CodeVariableReferenceExpression("sr"),
new CodeObjectCreateExpression(
typeof(StreamReader), codeParamExpression
)));
// ----------------------------------
// string xmlString = sr.ReadToEnd();
// ----------------------------------
var readToEndInvoke = CodeDomHelper.GetInvokeMethod("sr", "ReadToEnd");
var xmlString = new CodeVariableDeclarationStatement(
new CodeTypeReference(typeof(string)), "xmlString", readToEndInvoke);
tryStatmanentsCol.Add(xmlString);
tryStatmanentsCol.Add(CodeDomHelper.GetInvokeMethod("isoStream", "Close"));
tryStatmanentsCol.Add(CodeDomHelper.GetInvokeMethod("sr", "Close"));
// ------------------------------------------------------
// return Deserialize(xmlString, out obj, out exception);
// ------------------------------------------------------
var fileName = new CodeVariableReferenceExpression("xmlString");
var deserializeInvoke =
new CodeMethodInvokeExpression(
new CodeMethodReferenceExpression(null, GeneratorContext.GeneratorParams.Serialization.DeserializeMethodName),
new CodeExpression[] { fileName });
var rstmts = new CodeMethodReturnStatement(deserializeInvoke);
tryStatmanentsCol.Add(rstmts);
finallyStatmanentsCol.Add(CodeDomHelper.GetDispose("isoFile"));
finallyStatmanentsCol.Add(CodeDomHelper.GetDispose("isoStream"));
finallyStatmanentsCol.Add(CodeDomHelper.GetDispose("sr"));
var tryfinally = new CodeTryCatchFinallyStatement(
CodeDomHelper.CodeStmtColToArray(tryStatmanentsCol), new CodeCatchClause[0], CodeDomHelper.CodeStmtColToArray(finallyStatmanentsCol));
loadFromFileMethod.Statements.Add(tryfinally);
return(loadFromFileMethod);
}
