private static ConditionalExpression ProcessLine(ParameterExpression eventParameter, string line, ParameterExpression inputParameter)
{
Contract.Requires(!string.IsNullOrWhiteSpace(line), "Empty line");
Contract.Requires(eventParameter != null, "eventParameter is null");
int slot = 0;
var words = line.Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
Contract.Assert(words.Length >= 2);
// When
if (words[0].Equals("when", StringComparison.OrdinalIgnoreCase))
{
slot++;
}
var condition = new TestExpressionInfo();
Expression criteria = Expression.Constant(true);
// loop through the conditions until you find an operation (Add/subtract)
bool firstCondition = true;
while (slot < words.Length && !IsOperation(words[slot]))
{
Contract.Assert(words.Length > slot + 3);
if (!firstCondition)
{
slot++;
}
firstCondition = false;
condition = TestExpressionInfo.Parse(words[slot++], EnumParsing.Parse <Condition>(words[slot++]), words[slot++]);
var conditionalExpression = GetConditionExpression(condition, eventParameter, inputParameter);
criteria = Expression.And(criteria, conditionalExpression);
}
// operation
var operation = EnumParsing.Parse <Operation>(words[slot++]);
Contract.Assert(words.Length > slot);
var rewardApplied = words[slot++];
int count;
if (int.TryParse(rewardApplied, out count))
{
Contract.Assert(words.Length >= slot + 1, "if specifying the number of rewards, you must have 7 tokens");
Contract.Assert(count != 0, "you must not specify 0 count");
rewardApplied = words[slot++];
}
log.Info("when {0} {1} {2}", condition.Event, condition.Condition, condition.Value);
rewardApplied = rewardApplied.EndsWith("s") ? rewardApplied : rewardApplied + "s";
// Operation
var updateCount = GetOperationToUpdateCount(operation, eventParameter, count, rewardApplied);
return(Expression.IfThen(criteria, updateCount));
}
private static BinaryExpression GetConditionExpression(TestExpressionInfo c, Expression eventParameter, Expression inputParameter)
{
Contract.Requires(eventParameter != null);
Contract.Requires(inputParameter != null);
Func <Expression, Expression, BinaryExpression> comparer;
switch (c.Condition)
{
case Condition.Is:
case Condition.Equal:
case Condition.Eq:
log.Debug("Equal");
comparer = Expression.Equal;
break;
case Condition.NotEqual:
case Condition.Neq:
log.Debug("NotEqual");
comparer = Expression.NotEqual;
break;
case Condition.Greater:
case Condition.GreaterThan:
case Condition.Gt:
log.Debug("GreaterThan");
comparer = Expression.GreaterThan;
break;
case Condition.Less:
case Condition.LessThan:
case Condition.Lt:
log.Debug("LessThan");
comparer = Expression.LessThan;
break;
case Condition.GreaterThanOrEqual:
case Condition.Gte:
log.Debug("GreaterThan or Equal");
comparer = Expression.GreaterThanOrEqual;
break;
case Condition.LessThanOrEqual:
case Condition.Lte:
log.Debug("LessThan or Equal");
comparer = Expression.LessThanOrEqual;
break;
default:
throw new ArgumentOutOfRangeException("c", c, "Invalid condition");
}
var comparisonSource = c.Source == TestExpressionInfo.ComparisonSource.Event ? eventParameter : inputParameter;
var comparisonParameterName = c.Source == TestExpressionInfo.ComparisonSource.Event ? c.Event.ToString() : c.Input.ToString();
var comparisonSourceParameter = Expression.PropertyOrField(comparisonSource, comparisonParameterName);
return(comparer(comparisonSourceParameter, c.Value));
}
private static BinaryExpression GetConditionExpression(TestExpressionInfo c, Expression eventParameter, Expression inputParameter)
{
Contract.Requires(eventParameter != null);
Contract.Requires(inputParameter != null);
Func<Expression, Expression, BinaryExpression> comparer;
switch (c.Condition)
{
case Condition.Is:
case Condition.Equal:
case Condition.Eq:
log.Debug("Equal");
comparer = Expression.Equal;
break;
case Condition.NotEqual:
case Condition.Neq:
log.Debug("NotEqual");
comparer = Expression.NotEqual;
break;
case Condition.Greater:
case Condition.GreaterThan:
case Condition.Gt:
log.Debug("GreaterThan");
comparer = Expression.GreaterThan;
break;
case Condition.Less:
case Condition.LessThan:
case Condition.Lt:
log.Debug("LessThan");
comparer = Expression.LessThan;
break;
case Condition.GreaterThanOrEqual:
case Condition.Gte:
log.Debug("GreaterThan or Equal");
comparer = Expression.GreaterThanOrEqual;
break;
case Condition.LessThanOrEqual:
case Condition.Lte:
log.Debug("LessThan or Equal");
comparer = Expression.LessThanOrEqual;
break;
default:
throw new ArgumentOutOfRangeException("c", c, "Invalid condition");
}
var comparisonSource = c.Source == TestExpressionInfo.ComparisonSource.Event ? eventParameter : inputParameter;
var comparisonParameterName = c.Source == TestExpressionInfo.ComparisonSource.Event ? c.Event.ToString() : c.Input.ToString();
var comparisonSourceParameter = Expression.PropertyOrField(comparisonSource, comparisonParameterName);
return comparer(comparisonSourceParameter, c.Value);
}
private static ConditionalExpression ProcessLine(ParameterExpression eventParameter, string line, ParameterExpression inputParameter)
{
Contract.Requires(!string.IsNullOrWhiteSpace(line), "Empty line");
Contract.Requires(eventParameter != null, "eventParameter is null");
int slot = 0;
var words = line.Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
Contract.Assert(words.Length >= 2);
// When
if (words[0].Equals("when", StringComparison.OrdinalIgnoreCase)) slot++;
var condition =new TestExpressionInfo();
Expression criteria = Expression.Constant(true);
// loop through the conditions until you find an operation (Add/subtract)
bool firstCondition = true;
while(slot < words.Length && !IsOperation(words[slot]))
{
Contract.Assert(words.Length > slot + 3);
if (!firstCondition) slot++;
firstCondition = false;
condition = TestExpressionInfo.Parse(words[slot++], EnumParsing.Parse<Condition>(words[slot++]), words[slot++]);
var conditionalExpression = GetConditionExpression(condition, eventParameter, inputParameter);
criteria = Expression.And(criteria, conditionalExpression);
}
// operation
var operation = EnumParsing.Parse<Operation>(words[slot++]);
Contract.Assert(words.Length > slot);
var rewardApplied = words[slot++];
int count;
if (int.TryParse(rewardApplied, out count))
{
Contract.Assert(words.Length >= slot + 1, "if specifying the number of rewards, you must have 7 tokens");
Contract.Assert(count != 0, "you must not specify 0 count");
rewardApplied = words[slot++];
}
log.Info("when {0} {1} {2}", condition.Event, condition.Condition, condition.Value);
rewardApplied = rewardApplied.EndsWith("s") ? rewardApplied : rewardApplied + "s";
// Operation
var updateCount = GetOperationToUpdateCount(operation, eventParameter, count, rewardApplied);
return Expression.IfThen(criteria, updateCount);
}
