/// <summary>
/// Parses specified C# expression and returns <see cref="Expression{TDelegate}"/> which could be compiled with <see cref="ExpressionExtensions.CompileAot{TResult}"/> and executed.
/// </summary>
/// <param name="expression">A valid c# expression. Not null, not empty string.</param>
/// <param name="typeResolver">Type resolver for C# expression. Or <seealso cref="Binder.DefaultTypeResolver"/> if not specified.</param>
/// <returns>A parsed and bound syntax tree.</returns>
public static Expression <Action> ParseAction(string expression, ITypeResolver typeResolver = null)
{
if (expression == null)
{
throw new ArgumentNullException("expression");
}
AotCompilation.RegisterAction();
var tokens = Tokenizer.Tokenize(expression);
var parseTree = Parser.Parse(tokens);
var expressionTree = parseTree.ToSyntaxTree(cSharpExpression: expression);
var expressionBinder = new Binder(new ParameterExpression[0], resultType: typeof(void), typeResolver: typeResolver);
return((Expression <Action>)expressionBinder.Bind(expressionTree));
}
/// <summary>
/// Compiles specified expression into <see cref="Action"/> delegate using AOT aware expression compiler.
/// </summary>
/// <param name="expression">An expression syntax tree. Not null.</param>
/// <param name="forceAot">True to always use AOT compiler event if environment is JIT and supports dynamic code.</param>
/// <returns>A compiled expression.</returns>
public static Action CompileAot(this Expression <Action> expression, bool forceAot = false)
{
if (expression == null)
{
throw new ArgumentNullException("expression");
}
AotCompilation.RegisterAction();
if (AotCompilation.IsAotRuntime || forceAot)
{
return(AotCompiler.PrepareAction(expression.Body));
}
else
{
return(expression.Compile());
}
}
/// <summary>
/// Compiles specified expression into <see cref="Func{TArg1, TArg2, TResult}"/> delegate using AOT aware expression compiler.
/// </summary>
/// <typeparam name="TArg1">First argument type.</typeparam>
/// <typeparam name="TArg2">Second argument type.</typeparam>
/// <typeparam name="TResult">Result type.</typeparam>
/// <param name="expression">An expression syntax tree. Not null.</param>
/// <param name="forceAot">True to always use AOT compiler event if environment is JIT and supports dynamic code.</param>
/// <returns>A compiled expression.</returns>
public static Func <TArg1, TArg2, TResult> CompileAot <TArg1, TArg2, TResult>(this Expression <Func <TArg1, TArg2, TResult> > expression, bool forceAot = false)
{
if (expression == null)
{
throw new ArgumentNullException("expression");
}
AotCompilation.RegisterFunc <TArg1, TArg2, TResult>();
if (AotCompilation.IsAotRuntime || forceAot)
{
return(AotCompiler.PrepareFunc <TArg1, TArg2, TResult>(expression.Body, expression.Parameters));
}
else
{
return(expression.Compile());
}
}
/// <summary>
/// Parses specified C# expression and returns <see cref="Expression{TDelegate}"/> which could be compiled with <see cref="ExpressionExtensions.CompileAot{TResult}"/> and executed.
/// </summary>
/// <typeparam name="Arg1T">First argument type.</typeparam>
/// <param name="expression">A valid c# expression. Not null, not empty string.</param>
/// <param name="arg1Name">First argument name or <see cref="ARG1_DEFAULT_NAME"/> if not specified.</param>
/// <param name="typeResolver">Type resolver for C# expression. Or <seealso cref="Binder.DefaultTypeResolver"/> if not specified.</param>
/// <returns>A parsed and bound syntax tree.</returns>
public static Expression <Action <Arg1T> > ParseAction <Arg1T>(string expression, string arg1Name = ARG1_DEFAULT_NAME, ITypeResolver typeResolver = null)
{
if (expression == null)
{
throw new ArgumentNullException("expression");
}
AotCompilation.RegisterAction <Arg1T>();
var tokens = Tokenizer.Tokenize(expression);
var parseTree = Parser.Parse(tokens);
var expressionTree = parseTree.ToSyntaxTree(cSharpExpression: expression);
var expressionBuilder = new Binder(new[]
{
Expression.Parameter(typeof(Arg1T), arg1Name ?? ARG1_DEFAULT_NAME)
}, resultType: typeof(void), typeResolver: typeResolver);
return((Expression <Action <Arg1T> >)expressionBuilder.Bind(expressionTree));
}
/// <summary>
/// Parses specified C# expression and returns <see cref="Expression{TDelegate}"/> which could be compiled with <see cref="ExpressionExtensions.CompileAot{TResult}"/> and executed.
/// </summary>
/// <typeparam name="Arg1T">First argument type.</typeparam>
/// <typeparam name="Arg2T">Second argument type.</typeparam>
/// <typeparam name="Arg3T">Third argument type.</typeparam>
/// <typeparam name="ResultT">Result type.</typeparam>
/// <param name="expression">A valid c# expression. Not null, not empty string.</param>
/// <param name="arg1Name">First argument name or <see cref="ARG1_DEFAULT_NAME"/> if not specified.</param>
/// <param name="arg2Name">Second argument name or <see cref="ARG2_DEFAULT_NAME"/> if not specified.</param>
/// <param name="arg3Name">Third argument name or <see cref="ARG3_DEFAULT_NAME"/> if not specified.</param>
/// <param name="typeResolver">Type resolver for C# expression. Or <seealso cref="Binder.DefaultTypeResolver"/> if not specified.</param>
/// <returns>A parsed and bound syntax tree.</returns>
public static Expression <Func <Arg1T, Arg2T, Arg3T, ResultT> > ParseFunc <Arg1T, Arg2T, Arg3T, ResultT>(string expression, string arg1Name = ARG1_DEFAULT_NAME, string arg2Name = ARG2_DEFAULT_NAME, string arg3Name = ARG3_DEFAULT_NAME, ITypeResolver typeResolver = null)
{
if (expression == null)
{
throw new ArgumentNullException("expression");
}
AotCompilation.RegisterFunc <Arg1T, Arg2T, Arg3T, ResultT>();
var tokens = Tokenizer.Tokenize(expression);
var parseTree = Parser.Parse(tokens);
var expressionTree = parseTree.ToSyntaxTree();
var expressionBinder = new Binder(new[]
{
Expression.Parameter(typeof(Arg1T), arg1Name ?? ARG1_DEFAULT_NAME),
Expression.Parameter(typeof(Arg2T), arg2Name ?? ARG2_DEFAULT_NAME),
Expression.Parameter(typeof(Arg3T), arg3Name ?? ARG3_DEFAULT_NAME),
}, resultType: typeof(ResultT), typeResolver: typeResolver);
return((Expression <Func <Arg1T, Arg2T, Arg3T, ResultT> >)expressionBinder.Bind(expressionTree));
}
