private static string AddContextToExpression(string originalExpression, string contextName, string generatedDataContextCode)
{
// Should Match
// from _var_ in Customers
// let _var_ = Customers.Where(.....)
// Should NOT Match
// select new { Customers = c }
// select new { CustomersSuffix = c }
// where "Customers".Length == 9
var expression = originalExpression;
// Compile DataContext
Assembly assembly = new CodeDomScriptCompiler(new CSharpCodeProvider()).Compile(StandardAssemblies, new[] { generatedDataContextCode });
// Get Table Names
var tableNames = GetTableNamesFromDataContextAssembly(assembly);
// Replace quoted strings with Tokens
Dictionary <string, string> tokens = null;
expression = ReplaceQuotedStringsWithTokens(expression, out tokens);
// Replace TableNames with ___context.[TableName]
foreach (var tableName in tableNames)
{
// Find tableName - which is preceded by a whitespace, and either followed by a period (.) OR (followed by spaces AND NOT followed by an equal sign)
// Avoiding equal sign avoids assignments like LET and SELECT NEW { tableName = .... }
string findExpr = string.Format(@"(?<=\s)({0})(?=(\.|\s+[^\s=]))", tableName);
// Replace with context prefix
string replaceExpr = string.Format(" {0}.$1", contextName);
expression = Regex.Replace(expression, findExpr, replaceExpr);
}
// Replace Tokens with their original string values
Regex tokenRegex = new Regex(QuotedStringReplacePrefix + @"[0-9]*");
expression = tokenRegex.Replace(expression, (match) => tokens[match.Value]);
return(expression);
}
private static string AddContextToExpression(string originalExpression, string contextName, string generatedDataContextCode)
{
// Should Match
// from _var_ in Customers
// let _var_ = Customers.Where(.....)
// Should NOT Match
// select new { Customers = c }
// select new { CustomersSuffix = c }
// where "Customers".Length == 9
var expression = originalExpression;
// Compile DataContext
Assembly assembly = new CodeDomScriptCompiler(new CSharpCodeProvider()).Compile(StandardAssemblies, new[] { generatedDataContextCode });
// Get Table Names
var tableNames = GetTableNamesFromDataContextAssembly(assembly);
// Replace quoted strings with Tokens
Dictionary<string, string> tokens = null;
expression = ReplaceQuotedStringsWithTokens(expression, out tokens);
// Replace TableNames with ___context.[TableName]
foreach (var tableName in tableNames)
{
// Find tableName - which is preceded by a whitespace, and either followed by a period (.) OR (followed by spaces AND NOT followed by an equal sign)
// Avoiding equal sign avoids assignments like LET and SELECT NEW { tableName = .... }
string findExpr = string.Format(@"(?<=\s)({0})(?=(\.|\s+[^\s=]))", tableName);
// Replace with context prefix
string replaceExpr = string.Format(" {0}.$1", contextName);
expression = Regex.Replace(expression, findExpr, replaceExpr);
}
// Replace Tokens with their original string values
Regex tokenRegex = new Regex(QuotedStringReplacePrefix + @"[0-9]*");
expression = tokenRegex.Replace(expression, (match) => tokens[match.Value]);
return expression;
}