Previously a CPPredicate created with format `value == nil` was converted back to `value == <CPNull @ xxxx>`
This patch ensures `predicateFormat` returns `value == nil`
Test added in CPPredicateTest.j
Conditional Expression : an expression using different expressions for
evaluation, depending of a predicate result.
Support for predicate parsing: ```TERNARY(predicate, trueExpression,
falseExpression)```
With init, equal, evaluation, parsing tests.
When the predicate part of a subquery expression was containing
variables, the substitution was ignored.
Now, the subpredicate can contain variables that will be substituted
when calling evaluateWithObject:substitutionVariables:.
Added expression test and predicate parsing test.
When parsing a predicate format that contains a constant boolean expression
(e.g., 'key = YES') the value of the returned constant value expression has
the wrong type. Instead of using native types as values, the parser uses
[CPNumber +numberWithBool:].
This commit changes the format parser (CPPredicateScanner) to use native
booleans for constant value expression.
There's a test case that checks the parse result and an additional test
that ensures boolean expressions evaluate as expected with different kinds
of objects. The latter test passed before the fix but was added to ensure
compliance with Cocoa.
Added a missing CPDate.j import in CPExpression_function that was causing an 'unknown variable CPDate' error in deploy builds.
Added documentation for +expressionForSubquery:...
Added licence headers with credits.
"($)path.($)variable"
"SUBQUERY(collection, $x,$x = 2)"
"sum:(arg1, ...)"
"FUNCTION(target, selector, arg1, ...)
"object[expression]"
"set UNION|INTERSECT|MINUS otherset"
Fixed a bug where CPExpression_set was evaluating to an expression instead of a set.
Replaced parsing exceptions with a generic function indicating where it failed.
Added missing getters in CPExpression.
Added a type: argument to FunctionExpression initializer used by subclasses to init super with their own type.
Fixed evaluation with bindings dictionary in CPExpression_variable. Allow values in bindings to be a constant or an expression (per cocoa).
Tests: added tests for subqueryExpressions, for variableExpression evaluation where the value in the bindings dictionary can be either a constant or another expression.
Parsing a simple variable expression works (e.g. '$x = 12'), parsing a variable in a combined path (e.g.
'$x.path = 12' won't yet.
Parsing: fixed typos in built-in function names, fixed support for [FIRST], [LAST], [INDEX]
Fixed aggregates {exp1,exp2}
Fixed -expressionForFunction:selectorName:arguments:
built-in functions are now class methods
Cleaned a lot of code in built-in functions
EvaluatedObjectExpression is now a singleton
Merged inserset/minus/union Set into one file
Deleted unused expression subclasses : expression_operator and expression_assignement
Added CPCoding methods and changed key names to match Cocoa
Made KeyPathExpresion a subclass of FunctionExpression like in Cocoa
Tests
CPComparisonPredicate: fixed typo in 'between' operator evaluation, simplified 'contains' and 'in' evaluation.
Added tests in CPPredicateTest for theses fixes.