public override bool BoolEvaluate (IExpressionContext context)
{
if (left.CanEvaluateToNumber (context) && right.CanEvaluateToNumber (context)) {
float l,r;
l = left.NumberEvaluate (context);
r = right.NumberEvaluate (context);
return NumberCompare (l, r, op);
} else if (left.CanEvaluateToBool (context) && right.CanEvaluateToBool (context)) {
bool l,r;
l = left.BoolEvaluate (context);
r = right.BoolEvaluate (context);
return BoolCompare (l, r, op);
} else {
string l,r;
l = left.StringEvaluate (context);
r = right.StringEvaluate (context);
return StringCompare (l, r, op);
}
}
public ValueStack(IExceptionHandler handler, IExpressionContext expressionContext)
{
Values = new CustomDictionary();
_exceptionHandler = handler;
_evaluator = expressionContext.CreateEvaluator(this);
Persistables = new Dictionary<string, IPersistable>();
}
public override bool BoolEvaluate (IExpressionContext context)
{
if (left.BoolEvaluate (context))
return true;
if (right.BoolEvaluate (context))
return true;
return false;
}
public override bool BoolEvaluate (IExpressionContext context)
{
Token evaluatedToken = EvaluateToken (token, context);
if (trueValues [evaluatedToken.Value] != null)
return true;
else if (falseValues [evaluatedToken.Value] != null)
return false;
else
throw new InvalidOperationException ();
}
public static bool ParseAndEvaluate (string condition, IExpressionContext context)
{
if (String.IsNullOrEmpty (condition))
return true;
ConditionExpression ce = ParseCondition (condition);
if (!ce.CanEvaluateToBool (context))
throw new Exception (String.Format ("Can not evaluate \"{0}\" to bool.", condition));
return ce.BoolEvaluate (context);
}
public override bool BoolEvaluate (IExpressionContext context)
{
Token evaluatedToken = EvaluateToken (token, context);
if (trueValues [evaluatedToken.Value] != null)
return true;
else if (falseValues [evaluatedToken.Value] != null)
return false;
else
throw new ExpressionEvaluationException (
String.Format ("Expression \"{0}\" evaluated to \"{1}\" instead of a boolean value",
token.Value, evaluatedToken.Value));
}
public override bool BoolEvaluate (IExpressionContext context)
{
Func<string, IExpressionContext, bool> func;
if (!functions.TryGetValue (name, out func)) {
// MSB4091
throw new Exception (string.Format ("Found a call to an undefined function \"{0}\".", name));
}
if (args.Count != 1) {
// MSB4089
throw new Exception (string.Format ("Incorrect number of arguments to function in condition \"{0}\". Found {1} argument(s) when expecting {2}.",
name, args.Count, 1));
}
return func (args [0].StringEvaluate (context), context);
}
public override bool BoolEvaluate (IExpressionContext context)
{
if (!functions.ContainsKey (name))
throw new InvalidOperationException ("Unknown function named: " + name);
if (functions [name] == null)
throw new InvalidOperationException ("Unknown function named: " + name);
MethodInfo mi = functions [name];
object [] argsArr = new object [args.Count + 1];
int i = 0;
foreach (ConditionFactorExpression cfe in args)
argsArr [i++] = cfe.StringEvaluate (context);
argsArr [i] = context;
return (bool) mi.Invoke (null, argsArr);
}
public static bool ParseAndEvaluate (string condition, IExpressionContext context)
{
if (String.IsNullOrEmpty (condition))
return true;
try {
ConditionExpression ce = ParseCondition (condition);
if (!ce.CanEvaluateToBool (context))
throw new InvalidProjectFileException (String.Format ("Can not evaluate \"{0}\" to bool.", condition));
return ce.BoolEvaluate (context);
} catch (ExpressionParseException epe) {
throw new InvalidProjectFileException (
String.Format ("Unable to parse condition \"{0}\" : {1}", condition, epe.Message),
epe);
} catch (ExpressionEvaluationException epe) {
throw new InvalidProjectFileException (
String.Format ("Unable to evaluate condition \"{0}\" : {1}", condition, epe.Message),
epe);
}
}
#pragma warning disable 0169
#region Functions
// FIXME imported projects
static bool Exists (string file, IExpressionContext context)
{
if (string.IsNullOrEmpty (file))
return false;
string directory = context.FullDirectoryName;
file = MSBuildProjectService.FromMSBuildPath (directory, file);
bool res;
if (context.ExistsEvaluationCache.TryGetValue (file, out res))
return res;
res = File.Exists (file) || Directory.Exists (file);
context.ExistsEvaluationCache [file] = res;
return res;
}
public abstract string StringEvaluate(IExpressionContext context);
public static void Init(IExpressionContext context)
{
Current = context;
}
public abstract bool CanEvaluateToString(IExpressionContext context);
/// <summary>
/// Gets the member infos for the specified type.
/// </summary>
/// <param name="context">The expression context.</param>
/// <param name="type">The type.</param>
/// <returns></returns>
protected override IEnumerable <ConstructorInfo> GetMemberInfosForType(IExpressionContext context, Type type)
{
return(type.GetConstructors());
}
public override bool CanEvaluateToBool(IExpressionContext context)
{
// Short-circuiting, check only left expr, right
// would be required only if left == true
return(left.CanEvaluateToBool(context));
}
public static Log Log(this IExpressionContext context) => context.Item <Log>();
public override IExpression Invoke(IExpressionContext context) => Constant.Create(nameof(OmniLog.LogLevel), context.Log().Name());
public override bool CanEvaluateToNumber(IExpressionContext context)
{
return(false);
}
public IEnumerable <MemberInfo> GetMembers(IExpressionContext context)
{
return(this.Select(m => m.ToMemberInfo(context)));
}
// FIXME: check if we really can do it
public override bool CanEvaluateToBool(IExpressionContext context)
{
return(true);
}
public override string StringEvaluate(IExpressionContext context)
{
throw new NotSupportedException();
}
public override float NumberEvaluate(IExpressionContext context)
{
throw new NotSupportedException();
}
// FIXME: in some situations items might not be allowed
static Token EvaluateToken (Token token, IExpressionContext context)
{
string val = context.EvaluateString (token.Value);
return new Token (val, TokenType.String);
}
/// <summary>
/// Converts this instance to an boolean expression.
/// </summary>
/// <typeparam name="TEntity">The type of the entity.</typeparam>
/// <param name="context">The context.</param>
/// <returns></returns>
public Expression <Func <TEntity, bool> > ToBooleanExpression <TEntity>(IExpressionContext context = null)
{
return(ToExpression(ConvertToBooleanExpression <TEntity>, context ?? new ExpressionContext()));
}
public abstract float NumberEvaluate(IExpressionContext context);
public abstract bool CanEvaluateToBool(IExpressionContext context);
public override bool CanEvaluateToBool (IExpressionContext context)
{
return expression.CanEvaluateToBool (context);
}
public abstract bool CanEvaluateToString (IExpressionContext context);
public override bool CanEvaluateToString (IExpressionContext context)
{
return false;
}
/// <summary>
/// Invokes the expression with the specified expression context and
/// binding options.
/// </summary>
/// <param name="expressionContext">The expression context used to
/// bind and execute the expression.</param>
/// <param name="options">The options used to bind the expression.</param>
/// <returns>The result of the expression.</returns>
public object Invoke(IExpressionContext expressionContext, BoundExpressionOptions options)
{
if (expressionContext == null)
expressionContext = new ExpressionContext();
return Bind(expressionContext, options).Invoke(expressionContext);
}
/// <summary>
/// Converts this instance to an expression.
/// </summary>
/// <typeparam name="TDelegate">The type of the delegate.</typeparam>
/// <param name="conversionFunction">The conversion function.</param>
/// <param name="context">The context.</param>
/// <returns></returns>
/// <exception cref="System.ArgumentNullException">
/// Parameter <paramref name="conversionFunction"/> or <paramref name="context"/> is null.
/// </exception>
public Expression <TDelegate> ToExpression <TDelegate>(Func <ExpressionNode, IExpressionContext, Expression <TDelegate> > conversionFunction, IExpressionContext context)
{
if (conversionFunction == null)
{
throw new ArgumentNullException(nameof(conversionFunction));
}
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
return(conversionFunction(this, context));
}
public abstract bool CanEvaluateToNumber(IExpressionContext context);
/// <summary>
/// Converts to an expression.
/// </summary>
/// <typeparam name="TDelegate">The type of the delegate.</typeparam>
/// <param name="expressionNode">The expression node.</param>
/// <param name="context">The context.</param>
/// <returns></returns>
private static Expression <TDelegate> ConvertToExpression <TDelegate>(ExpressionNode expressionNode, IExpressionContext context)
{
var expression = expressionNode.ToExpression(context);
return((Expression <TDelegate>)expression);
}
/// <summary>
/// Converts to a boolean expression.
/// </summary>
/// <typeparam name="TEntity">The type of the entity.</typeparam>
/// <param name="expressionNode">The expression node.</param>
/// <param name="context">The context.</param>
/// <returns></returns>
private static Expression <Func <TEntity, bool> > ConvertToBooleanExpression <TEntity>(ExpressionNode expressionNode, IExpressionContext context)
{
return(ConvertToExpression <Func <TEntity, bool> >(expressionNode, context));
}
/// <summary>
/// Invokes the expression with the specified expression context.
/// </summary>
/// <param name="expressionContext">The expression context used to
/// bind and execute the expression.</param>
/// <returns>The result of the expression.</returns>
public object Invoke(IExpressionContext expressionContext)
{
return Invoke(expressionContext, null);
}
/// <summary>
/// Converts this instance to an expression.
/// </summary>
/// <param name="context">The context.</param>
/// <returns></returns>
public virtual Expression ToExpression(IExpressionContext context)
{
return(null);
}
#pragma warning disable 0169
#region Functions
// FIXME imported projects
static bool Exists (string file, IExpressionContext context)
{
if (string.IsNullOrEmpty (file))
return false;
string directory = null;
if (context.FullFileName != String.Empty)
directory = Path.GetDirectoryName (context.FullFileName);
file = MSBuildProjectService.FromMSBuildPath (directory, file);
return File.Exists (file) || Directory.Exists (file);
}
/// <summary>
/// Converts this instance to an expression.
/// </summary>
/// <typeparam name="TDelegate">The type of the delegate.</typeparam>
/// <param name="context">The context.</param>
/// <returns></returns>
public Expression <TDelegate> ToExpression <TDelegate>(IExpressionContext context = null)
{
return(ToExpression(ConvertToExpression <TDelegate>, context ?? new ExpressionContext()));
}
static bool HasTrailingSlash (string file, IExpressionContext context)
{
if (file == null)
return false;
file = file.Trim ();
int len = file.Length;
if (len == 0)
return false;
return file [len - 1] == '\\' || file [len - 1] == '/';
}
public abstract bool TryEvaluateToBool(IExpressionContext context, out bool result);
public override bool CanEvaluateToBool (IExpressionContext context)
{
return functions.ContainsKey (name);
}
public override float NumberEvaluate (IExpressionContext context)
{
Token evaluatedToken = EvaluateToken (token, context);
return Single.Parse (evaluatedToken.Value, CultureInfo.InvariantCulture);
}
public override bool CanEvaluateToNumber (IExpressionContext context)
{
if (token.Type == TokenType.Number)
return true;
else
return false;
}
// FIXME: check if we really can do it
public override bool CanEvaluateToBool (IExpressionContext context)
{
Token evaluatedToken = EvaluateToken (token, context);
if (token.Type == TokenType.String && allValues [evaluatedToken.Value] != null)
return true;
else
return false;
}
public virtual bool TryEvaluateToNumber(IExpressionContext context, out float result)
{
result = 0;
return(false);
}
public abstract bool BoolEvaluate(IExpressionContext context);
public override string StringEvaluate (IExpressionContext context)
{
Token evaluatedToken = EvaluateToken (token, context);
return evaluatedToken.Value;
}
public virtual bool TryEvaluateToString(IExpressionContext context, out string result)
{
result = null;
return(false);
}
public override bool CanEvaluateToBool (IExpressionContext context)
{
return left.CanEvaluateToBool (context) && right.CanEvaluateToBool (context);
}
public virtual bool TryEvaluateToVersion(IExpressionContext context, out Version result)
{
result = null;
return(false);
}
public override bool BoolEvaluate (IExpressionContext context)
{
return !(expression.BoolEvaluate (context));
}
public override string StringEvaluate (IExpressionContext context)
{
throw new NotSupportedException ();
}
public override System.Linq.Expressions.Expression ToLinqExpression(IExpressionContext ctx)
{
throw new NotImplementedException();
}
public static void Init(IExpressionContext context)
{
Current = context;
}
public override float NumberEvaluate (IExpressionContext context)
{
throw new NotSupportedException ();
}
protected override IAggregateFluent <ProductSubgroupView> ConvertToViewAggreagate(IAggregateFluent <ProductSubgroup> mappings, IExpressionContext <ProductSubgroup, ProductSubgroupView> context)
{
var unwind = new AggregateUnwindOptions <ProductSubgroupView> {
PreserveNullAndEmptyArrays = true
};
return(mappings.Lookup("product_group", "product_group_code", "code", "ProductGroup")
.Unwind("ProductGroup", unwind)
.As <ProductSubgroupView>().Match(context.GetPostExpression()));
}
// FIXME: check if we really can do it
public override bool CanEvaluateToBool (IExpressionContext context)
{
return true;
}
protected override IEnumerable <FieldInfo> GetMemberInfosForType(IExpressionContext context, Type type)
{
return(type.GetFields());
}
public ValueStackContext(IDbRefFactory dbRefFactory, IExpressionContext expressionContext)
{
_dbRefFactory = dbRefFactory;
_expressionContext = expressionContext;
}
public override string StringEvaluate(IExpressionContext context)
{
Token evaluatedToken = EvaluateToken(token, context);
return(evaluatedToken.Value);
}
