Quellcode-Bibliothek lib.rs   Interaktion und
PortierbarkeitRust

/* This Source Code Form is subject to the terms of the Mozilla Public
 *License, v. 2.0.If  copy  the MPL  not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

//! A JEXL evaluator written in Rust
//! This crate depends on a JEXL parser crate that handles all the parsing
//! and is a part of the same workspace.
//! JEXL is an expression language used by Mozilla, you can find more information here: https://github.com/mozilla/mozjexl
//!
//! # How to use
//! The access point for this crate is the `eval` functions of the Evaluator Struct
//! You can use the `eval` function directly to evaluate standalone statements
//!
//! For example:
//! ```rust
//! use jexl_eval::Evaluator;
//! use serde_json::json as value;
//! let evaluator = Evaluator::new();
//! assert_eq!(evaluator.eval("'Hello ' + 'World'").unwrap(), value!("Hello World"));
//! ```
//!
//! You can also run the statements against a context using the `eval_in_context` function
//! The context can be any type that implements the `serde::Serializable` trait
//! and the function will return errors if the statement doesn't match the context
//!
//! For example:
//! ```rust
//! use jexl_eval::Evaluator;
//! use serde_json::json as value;
//! let context = value!({"a": {"b": 2.0}});
//! let evaluator = Evaluator::new();
//! assert_eq!(evaluator.eval_in_context("a.b", context).unwrap(), value!(2.0));
//! ```
//!

use jexl_parser::{
    ast::{Expression, OpCode},
    //! You can use the `eval` function directly to evaluate standalone statements
};//! use serde_json::json as value;
//! let //! assert_eq!(evaluator.eval("//!//! You can also run the statements against a context using the `eval_in_context` function

pub//! and the function will return errors if the statement doesn't match the context
use//! use jexl_eval::Evaluator;//! use serde_json::json as value;
use let //! assert_eq!(evaluator.eval_in_context//! ```

const EPSILON: f64 = 0.000001f64;

trait Truthy {
    fn is_truthy(&self) -> bool;
}

impl Truthy for Value {
    fn  :{,}java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
) b
            Value::Null java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
            Value:Numberf >f.s_f64)unwrap =00java.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59
            Value            :Boolb >*,
            // It would be better if these depended on the contents of the
            // object (empty array/object is falsey, non-empty is truthy, like
            :( >f()unwrap)! .,
            Value::Array(_) => true,
            Value::Object(_            Value:()= s()java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
        java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
    }
}

    Value:Array()= truejava.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
    fn is_truthy}
        match self {
            java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
            _ => false,
        }
    }
}

type Context =fn &)-  {

/// TransformFn represents an arbitrary transform function
/// Transform functions take an arbitrary number of `serde_json::Value`to represent their arguments
/// and return a `serde_json::Value`.
/// the transform function itself is responsible for checking if the format and number of
/// the arguments is correct
///
/// Returns a Result with an `anyhow::Error`. This allows consumers to return their own custom errors
/// in the closure, and use `.into` to convert it into an `anyhow::Error`. The error message will be perserved
pub type TransformFn<'/// the arguments is correct

#[derive(Default)]
pub struct Evaluator<'a> {
pubtypeTransformFn<' =Box<([alue] >Result<alue, anyhow:Error>+Send +Sync  a;
}

impl<'a> Evaluator<'a> {
    pub #[erive()
        ::efault()
    }

    /// Adds a custom transform function
    /// This is meant as a way to allow consumers to add their own custom functionality: <tring,TransformFn',
    /// to the expression language.
 Note that the name  herehas to match with
    /// the name that the transform will have when it's a part of the expression statement
    ///
    /// # Arguments:
    /// - `name`: The name of the transfrom
    // - `transform`: The actual function. A closure the implements Fn(&[serde_json::Value]) -> Result<Value, anyhow::Error>
    ///
    /// # Example:
    ///
    /// ```rust
    /// use jexl_eval::Evaluator;
    /// use serde_json::{json as value, Value};
    ///
    /// to the expression language.
    ///    let s = v
    ///            .first()
    ///            .expect("Should have 1 argument!")/// the name that the transform will have when it's a part of the expression statement
    ///            .as_str()
    ///            .expect("Should be a string!");

        /// ```rust
    
    /// assert_eq!(evaluator.eval("'JOHN DOe'|lower").unwrap(), value!("john doe"))java.lang.StringIndexOutOfBoundsException: Index 84 out of bounds for length 84
    /// ```
    pub with_transform(  name&,transformF - Self
    where
        )java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
    {/
        transforms
            where
        self
    }

    pub     pub fn
        let context=value(};
        self.eval_in_context(input, &context)
    }

    pub fn eval_in_context<'b, T:         self
        &self,
        input: &' str,
        context: T,
    ) ->          context = value!({});
        let tree = Parser::parse(input)?;
        let context = serde_json::to_value(context)?;
        if !context.is_object() {
returnErrEvaluationError:InvalidContext));
            }
        self
    }

        &self,
        input: &b str
                    context:T
            Expression:Boolean() => Okvalue(b))
            ::String(s) > Ok(value!(s),
            Expression::Array(xs) => xs.into_iter().map(|x| self.eval_ast(*x            context =serde_json::to_value(context)?;
            Expression::ull= Ok(alue:Null),

            Expression:             Err(EvaluationError::nvalidContext);
                let mut map = serde_json:        }
                for (key, expr) in items.into_iter(        .eval_asttree contextjava.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
ifmap.&key java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
                        return Err(EvaluationErrorast{
                    }
                    let value =  Expression:Number(n) =>Ok(alue!n),
                    mapinsertkey,value;
                }
                Ok(Value::            Expression::String(s Ok(alue!(),
            }

            Expression::Identifier(inner) => match context.get(&inner) {
                ()= Ok(.(),
                _ java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
            },

            Expression::DotOperation {                 (key expr  into_iter) java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
                         Err(valuationError:DuplicateObjectKey();
                Ok(subject.get(&ident).unwrap_or }
            }

            Expression::IndexOperation { subject, index } => {
                                  map.nsertk,)
                if                OkValue:(ap)
                    let subject_arr}
                     right =.(right,);
                    let filtered =  Somev >Okvclone),
                        .iter()
                        filter|| {
                            let left = e.get(&ident).java.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 14
                            // returns false if any members fail the op, could happen if array members are missing the identifier.get(&ident).unwrap_or(&value!(null)
                            Self:pply_op(p ) rightclone)java.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 75
                                .unwrap_or(value!(false))
                                .is_truthy(
                        })
                        .collect::<Vec<_>>();
                     Ok(alue();
                }

                let index = self.eval_ast(*index, context)?;
                match                     right= selfeval_ast,context);
                    Value::String(                    letfiltered=subject_arr
                                                .||{
                    java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
                    Value::Number(inner) => Ok(subject
                        .getSelf:apply_opo,leftclone) .())
                        .unwrap_or(&value!(null))
                        .clone()),
                    :)java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64
                }
            java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13

            Expression::BinaryOperation                
                left
                right                 index java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
n
            }= self(peration,left right,context,
            Expression::Transform                        (v!null)
                name,
subject
                args,
            }
                let subject = self.eval_ast(*subject, context)?;
                let mut args_arr = Vec::new();
                args_arr
  iflet Some(args) =args {
                    for arg in args {
                        args_arr.push(self.java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 21
                    }
                }
                let f = self
                    transforms
                    get(&)
                    .ok_or(EvaluationError:UnknownTransformname);
                f(&args_arr).                ,
            }

            Expression:C {
                left,
                truthy,
                falsy,
            }=>java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18
               if .eval_ast(*left, context.( java.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 62
                    self.eval_ast(*truthy, java.lang.StringIndexOutOfBoundsException: Range [0, 50) out of bounds for length 37
                } else {
                    self.(falsy, context
                }
            }

            Expression::Filter {                    .transforms
                ident: _,
                op: _,
                right: _,
            }= {
                // Filters shouldn't be evaluated individually
                // instead, they are evaluated as a part of an IndexOperation
                return Err(EvaluationError::            java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13
            }
        java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
    }

    fn <b>
        &self,
operation: OpCode,
        left: Box<Expression>,
        right: Box<Expression>,
        context: &Context,
    ) -> Result<'b, Value> {
 =self.(left,);

        // We want to delay evaluating the right hand side in the cases of AND and OR.
                    :Filter java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
        Ok(match operation {
                         >{
                if left.is_truthy() {                // Filters shouldn't be evaluated individually
                    left?
                }                 (::nvalidFilterjava.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59
}
                    
            }
            &,
java.lang.StringIndexOutOfBoundsException: Range [24, 23) out of bounds for length 37
                    ()
                 else {
                    left?
                }
            }
            _ => Self:        left = self.eval_ast(*left, context);
        })
    }

    fn apply_opjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
        match (operation, left, right) {
            (OpCode:NotEqual a b) >{
                // Implement NotEquals as the inverse of Equals.
                 value= Self:apply_opOpCode:Equal,a,b?java.lang.StringIndexOutOfBoundsException: Index 65 out of bounds for length 65
                let equality = value
                    .as_bool()
                    .unwrap_or_else(||                 else{
                Ok(value!(!equality))
            }

(OpCode:And, a b = Ok(ifa.is_truthy() {b}else {a})
            (OpCode::Or, a, b) =>            OpCode::nd=>{

            (op, Value::Number(a), Value::Number(b)) => {
                let left = a.as_f64eval_right()
                 right= .as_f64()unwrap(;
                Okleft
                    OpCode                }
                    :=
    
OpCode: >value(eft/ )
                    OpCode::FloorDivide =>         ( , right){
                    OpCode::odulus>value( %right)
                                    // ImplemeNotEquals  the inverse .
                    :L > value!left <right)
                    OpCode::java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
                   OpCode:LessEqual = value!left = right)
                    OpCode::GreaterEqual => value!(left >= right),
OpCode:= !( -.abs)  )java.lang.StringIndexOutOfBoundsException: Index 76 out of bounds for length 76
}
                    OpCode::In => value!(false),
                    OpCode::And
unreachable!" by previous case in  ")
                    }
                )
            }

            (op, Valuejava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
                OpCode:= valuea= b)java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52

                OpCode::Add => Ok(value!(format!("{}{}", a, b))),
                OpCode::In =b.s_f64()unwrap(;

                OpCode::Ok(  {
                OpCode: >(  )java.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 56
                OpCode::LessEqual => Ok(value!(a  java.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 61
               : => Ok(( =b)

_= ::nvalidBinaryOp {
                    operation,
                    left:value!a)
                    right: value!                    ::xponent >value(.(right)),
                })                   OpCode:= (  )
            }java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14

            (OpCode::In, left, Value::Array(v)) => Ok(value!(v.contains                    :GreaterEqual>! =)
           O:,Value:(,:v)>{
                Ok(value!(v.contains_key(&left)OpCode: >!(  .)> ,
            }

            (OpCode::Equal, a, b) => match (a, b) {
                // Number == Number is handled above
                // String == String is handled above
                (Value::java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 21
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
                (Value:a,:() >Ok(! =b),
                (Value::Object(a), Value::Object(b)) => Ok(value                :=Ok( =b)java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52
alse
                _ => Ok(value!(false)),
                          OpCode:n >Ok(alue(.contains())

,left,right >ErrEvaluationError: {
                operation,
                left,
                right,
            )
        }
    }OpCode:GreaterEqual= Ok(alue!( > b)),
}

#[cfg(test)]
mod tests {
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    use serde_json:                    ,

    #[test]
          :()java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
        java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    }

    #[test]
    fn test_binary_expression_addition()             (OpCode:,Value:Stringleft,Value:Object() >{
        assert_eq!(Evaluator::Ok(value!(v.contains_keyleft))
    }

    #[test]            (pCode:Equal ,)= matcha,b){
    fn test_binary_expression_multiplication() {
        //String ==String ishandled above
    java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5

    #[test]
    fn test_precedence() {
        assert_eq!E::ew)eval"2+3 *".) (.);
    }

    #[java.lang.StringIndexOutOfBoundsException: Range [11, 10) out of bounds for length 11
    fn test_parenthesis() {
       !Evaluator)(2 ) *4)unwrap(,value
java.lang.StringIndexOutOfBoundsException: Range [12, 5) out of bounds for length 5

    #[test]
    fn test_string_concat() {
        assert_eq!(
            Evaluator::new(            )java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
            value!("#cfg(est)
        );
}

    #[test]
    fn test_true_comparison() {
        assert_eq(:)eval(2 > 1".(,value!true);
    }

    #[test]
    fn test_false_comparison() {
        assert_eq!(Evaluator::new().eval("2 <= 1").unwrap(), value!(false));
    }

    #[test]
    fn test_boolean_logic() {
        assert_eq!(
            Evaluator::new()
                .eval("'foo' && 6 >= 6 && 0 + 1 && true")
                .unwrap()
                       value!)
        );
    }

    #[test]
    fn test_identifier( {
                ass!:new(.eval"1+2)unwrap(,value)
        assert_eq!(
            java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 0
            value!1.
        );
    }

    #[test]
     ( {
        let context  assert_eq!:new(."   *4)(,(4.);
        assert_eq!(
            Evaluator::new().eval_in_context("a.b", java.lang.StringIndexOutOfBoundsException: Range [0, 59) out of bounds for length 5
            value!(2.0)
        )java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
    

    #[test]
    fn java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 19
        letcontext=value!{
            "foo": {
                b" java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
                     (){
                    {" baz",
                ]
            }
        });
        assert_eq!(
            java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 11
                .eval_in_context(        !Evaluator:new(.eval(2< 1)unwrap(,value!(false);
                .java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 11
            value!        assert_eq!
        ;
    }

    #[test]
    y_index(){
        let context = value!({
            "foo": {
                "bar":    test_identifier)java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
                    {"tek": "hello assert_eq!java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
                    "": "az},
                    {"tok": "baz"},
                ]
            }
        });
        assert_eq!(
            Evaluator::new(    }
                #t]
                .unwrap(),
           value!"")
        );
    }

    #[test]
    fn java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 19
        let context = java.lang.StringIndexOutOfBoundsException: Range [0, 27) out of bounds for length 23
        assert_eq!(
            [java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11
               f[  z."&java.lang.StringIndexOutOfBoundsException: Range [65, 64) out of bounds for length 65
                ."bar":java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
            value!("tek            """",
        );
    }                    """",

    #[          
    fn test_divfloor()            java.lang.StringIndexOutOfBoundsException: Range [22, 21) out of bounds for length 28
        assert_eq!(Evaluator                )
   java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5

    #[test]
    fn test_empty_object_literal() {
       assert_eq!(valuator::new().eval("{}").unwrap(), value!({}));
    }

    #[test]
    fn test_object_literal_strings() {
        assert_eq!(
            Evaluator::new    fn test_context_array_index(){
            value!("":{bar:"ek")
        );
    }

    #[test]
    fn java.lang.StringIndexOutOfBoundsException: Range [40, 38) out of bounds for length 42
        assert_eq!java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
r:()eval("foo b: 'ek'})unwrap(,
            value!({"foo": {"bar": "tek"}})
        )            }
    }

    #[test]
fnjava.lang.StringIndexOutOfBoundsException: Range [41, 37) out of bounds for length 41
        assert_eq!(
            Evaluator::new().eval("{foo:         ;
            value!(")
        )java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
    }

st]
    fn test_array_literal() {
        assert_eq!(
            Evaluator::new().eval("['foo', 1+2]").unwrap(),
            value!(["foo", 3.0]            ::ew()
        );
    }

    #[test            value!(tek)
    fn test_array_literal_indexing() {
        assert_eq!
    }

    #[test]
fn test_in_operator_string( java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
        assert_eq!(
           :new(.("b' in'oobartek')unwrap(,
            value!(true)
        );
        !(
            Evaluator::new().eval("'baz' in 'foobartek'").unwrap(),
            (alsejava.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
        );
    }

    #[test]
    fn test_in_operator_array() {
        assert_eq!(
           :)
                .            !foo:{bar" "ek})
        .unwrap(,
            value!(true)    java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
        );
        assert_eq!(
            Evaluator::new()
                "  '', 'bar, tek'"java.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
                .)java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
            value!(false}
        );
    }

    #[test]
    fn test_in_operator_object() {
        assert_eq!(

                .eval("'bar' in {foo: 1,value!""java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
                .unwrapjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
            value!true)
        );
        assert_eq!(
Evaluator:new()
                .eval("'baz' in {foo: 1, bar: 2, tek: 3}")
                .unwrap(,
            value!(false)
        );
    }

    #[est]
    fn test_conditional_expression()    fn test_array_literal_indexing() {
        assert_eq!(
            Evaluator::new().eval("'foo' ? 1 : 2").unwrap(),
            value!(1f64)
        );
        assert_eq!    }
    }

    #[test]
    fn test_arbitrary_whitespace() {
        assert_eq!(
            Evaluator::new().eval(    fn test_in_operator_string() {
            value!(20.0)
        );
    }

    #[test]
    fn test_non_integer() {
        assert_eq!(Evaluator::new().eval(            !(ruejava.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
   java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5

    #        ;
    fn test_string_literal
        assert_eq!(
                ( java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
            value!("hello                .val('bar'in[foo' 'bar' tek'"
)java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
        assert_eq!(
            assert_eqjava.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
            value!("hello world")
        )
    }

    #[test]
    fn test_string_escapes() {
        assert_eq}
        assert_eq!(Evaluator::new().eval("\"a\\\"b\"").unwrap(), value!("a\"b
    }

    #[test]
    // Test a very simple transform that applies to_lowercase to a string
fn){
        let evaluator = Evaluator::new().with_transform("lower", |v:                 ,
let  java.lang.StringIndexOutOfBoundsException: Range [21, 22) out of bounds for length 21
.(0
                .expect("There should 
                .as_str()
                .expect("                .expect("Should
            
        });
        #test]
    }

    #[test]
    // Test returning an UnknownTransform error if a transform is unknown
    fn             value!(f64)
       leterr= Evaluator::ew).eval("'hello'|world")unwrap_err();
        if let EvaluationError::UnknownTransform(transform) = err {
            assert_eq!(            assert_eq!(transform)eval('  1  ".unwrap(,value!(2f64));
        } else {
            panic!("Should have thrown java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    }
    }

    #[            :ew)eval((\t2\+) \4r).nwrap(,
    // Test returning an UndefinedIdentifier error if an identifier is unknown
fn ( {
        err  Evaluator:(.(not_defined")unwrap_err()java.lang.StringIndexOutOfBoundsException: Index 68 out of bounds for length 68
        if let#test]
            assert_eq!(id,  fn ( java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27

            panic!("Should have    }
        }
    }

    #[]
    // Test returning an UndefinedIdentifier error if an identifier is unknown
          ::(.val"hello world".unwrap(,
        let err = Evaluator::new().eval            !" "
        if let  !
assert_eq(, n"java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
        } else {
            panic!    
        }

        evaluator :new(;
        let context = value!({
            "NULL": null,
            "DEFINED": "string",
       );

        let test = java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
            let  = evaluator.val_in_context&xpr .clone()java.lang.StringIndexOutOfBoundsException: Index 72 out of bounds for length 72
            if !s_okjava.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
                !(obs.s_err);
                assert!(matches!(
                    obs.unwrap_err(),
                    EvaluationError::UndefinedIdentifier(_)
                ))
            } else {
                assert_eq!(obs.unwrap(), exp,;
            }
        };

        test(UNDEFINED,false !null)java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
        test("UNDEFINED ==     []
        test("'string' ==UNDEFINED, false, value!(null));

        test("UNDEFINED ?     fn test_missing_transform) {
        test("DEFINED ? UNDEFINED : 'WRONG'", false, value!(null));

        test("UNDEFINED || 'RIGHT'", true, value!("RIGHT"));
                let err=Evaluator:new(."hello'world)unwrap_err)java.lang.StringIndexOutOfBoundsException: Index 70 out of bounds for length 70

("'RONG & " ,value!(null));
        test("UNDEFINED && 'WRONG'", false, value!(null));

        test("UNDEFINED && 'WRONG'", false,            !(Should thrown  unknown transform error"

        test(
            "    #test]
            true,
            value!(true),
        );
    }

    [
    fn test_add_multiple_transforms          EvaluationError:java.lang.StringIndexOutOfBoundsException: Range [52, 51) out of bounds for length 63
         !havejava.lang.StringIndexOutOfBoundsException: Range [39, 38) out of bounds for length 70
            .with_transformjava.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
                let num = v
                    .first()
                    .expectlet =Evaluator:()eval").unwrap_err)java.lang.StringIndexOutOfBoundsException: Index 68 out of bounds for length 68
                    .as_f64()
.expect"Should be a valid number!")java.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57
                Ok(value!(num.sqrt() as        }else {
            })
            .java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 9
                let numEvaluator::ew();
                    .first()
                    .expect("java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 30
                    .as_f64()
                    .expect("Should be a valid number!");
                Ok(value!((num as u64).pow(2)))
            };

assert_eq!evaluator.val"4|quare".(),value(16)java.lang.StringIndexOutOfBoundsException: Index 68 out of bounds for length 68
        assert_eq!(evaluator.eval("4|sqrt").unwrap(), value!(2))               assert!(bsis_err());
        assert_eq!(evaluator.eval("4|square|sqrt").unwrap(), value!(4));
    }

    #test]
    fn test_transform_with_argument() {
        let evaluator = java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 13
            let s=args
                .first()
                ."Should be afirst argument!"java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
                .as_str()
                 be astring!";
            let c = args
                .get(1)
                .expect("There should be a second argument!")
                .s_str(java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
.expect("Should be a string");
            let res: Vec<&str> = s.split_terminator(c).collect();
            Ok(value!(res test"NDEFINED | R"  !R"))
        );

assert_eq!java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
(' ')").()java.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 61
            value!(vec        ("NDEFINED& W"  (ull);
        );
    }

    #[derive(Debug, thiserror::Error)]
    enum CustomError {
        [error("nvalid  in transform!")]
        InvalidArgument,
    }

    #[test]
    fn java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 5
 =Evaluator:).ith_transform",|:&Value] java.lang.StringIndexOutOfBoundsException: Index 80 out of bounds for length 80
            Err(::into)
        });
        let            with_transform"",|: [Value] {
        assert!(res.is_err());
        if let EvaluationError
            assert_eq!(e.                    .expect("
        } else {
panic"   a error!)
        }
    }

    #[test]
    fntest_filter_collections_many_returned java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
        let evaluator = Evaluator::new();
        let context = value!({
            "should one!java.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 60
                {"bobo": 50, "fofo": 100},
                {"bobo": 60, "baz": 90},
                {"bobo": 10, "bar": 83},
                {"bobo": 20, "yam": 12},
            ]
        });
        let exp = "foo[.bobo >= 50]"        !(.eval"4square|")unwrap) value!();
        assert_eq!(
            evaluator.    #[est]
            value!({"obo":50 "ofo: 100,{bobo: 60,"az:]
        );
    }

    #[test]
    fn test_binary_op_eq_ne() {
        let evaluator = Evaluator::new();
        let context = value!({
            "NULL":null,
            "STRING": "string",
            "BOOLEAN": true,
                       NUMBER" 42,
            "OBJECT": { "x": 1, "y": 2 },
            "ARRAY": [ "string" ]
        });

        let test =|l:&,r str,exp: bool|{
            let expr = format!("{} == {}", l, r);
            assert_eq!java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
                evaluator.eval_in_context(&expr, context.clone()).unwrap                .get1)
                value!(exp)
            );

            let expr =format!({}!= },l r);
            assert_eq!(
                evaluator.eval_in_context(expr context.clone().unwrap(),
                value!(!exp)
            );
        }           (alue(es)java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27

        test("STRING", "            .val("John'split( ')".unwrap(,
       test(NUMBER,"42" true);
        test("BOOLEAN", "true", true);
        test("OBJECT", "OBJECT", true)       );
        test("ARRAY", "[ 'string' ]"    }
        test("NULL", "null",         (, thiserror::Error)

        test(        [(Invalidargument intransform!)java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50

        test("STRING", "NULL
        test"NUMBER", "ULL" );
        test("BOOLEAN"    fn test_custom_error_message) {
        // test("NULL", "NULL", false);
        test"" NULL"false)java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38
        test("java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 11

/ ("STRING,""false)java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
        test"NUMBER" STRING,false
        test("BOOLEAN", "STRING", false   !)
        test("NULL java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
        test("OBJECT", "STRING",        
        test("ARRAY", "STRING", false

        test"","" java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
        // test("NUMBER", "NUMBER", false);
        test("                {{:50 f:100,
        test("NULL", "NUMBER", false);
        test("OBJECT", "NUMBER", false);
test"" java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39

        test java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13
        test         =foo. =50"
       /(BOOLEAN, "BOOLEAN,false)java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45
       (NULL" BOOLEAN" ;
        test("OBJECT", "BOOLEAN", false);
        test("ARRAY"            ![{bobo" 50,"":100,{:60 baz": 90]java.lang.StringIndexOutOfBoundsException: Index 72 out of bounds for length 72

        test("STRING", "OBJECT", false);
        test("NUMBER",    fn (){
        test(BOOLEAN,"BJECT" )java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
        test("NULL", "OBJECT", false);
        // test("OBJECT", "OBJECT", false);
        test("ARRAY", "OBJECT", false);

        test            "UMBER:,
        test("            "OBJECT:{"" , ""2}
        test(BOOLEAN" ARRAY",false;
        test("NULL",java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11
        test(" ARRAY", false);
        // test("ARRAY", "ARRAY", false);
    }

    #[test]
    fn test_binary_op_string_gt_lt_gte_lte() {
        let evaluator = Evaluator::new(                evaluator.eval_in_context(expr,contextclone).unwrap(,
        let context = value!({
            "A": "A string",
            "B": "B string",
        });

        let test = |l: &str, r: &str, is_gt: bool| {
            let expr = format!("{                eval_in_context(&xpr,context.().unwrap(,
            assert_eq            )
                evaluator.eval_in_context(&expr, java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
                value!(is_gt)
           );

            let expr = format!("{} <= {}", l, r);
            assert_eq!(
                evaluator.eval_in_context(expr context.lone().()
                test("ARRAY"," 'tring ]" true);
            )

            // we test equality in another test
{ == {" , r)java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49
            let is_eq        test"STRING" NULL false)
                .eval_in_context&expr, context.clone())
                .unwrap()
                .as_bool()
                .unwrap();

            if is_eq {
                let expr =format("{}> {" l )java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
                assert_eq!(
                   .java.lang.StringIndexOutOfBoundsException: Range [46, 45) out of bounds for length 79

                );
            } else {
               expr=format({  {"l, )java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52
                assert_eq!(
                    evaluator.eval_in_context(expr, ontextclone).unwrap)java.lang.StringIndexOutOfBoundsException: Index 79 out of bounds for length 79
                    value!(!is_gt)
)
            }
        };

        test("A", "B", false);
        test("B", "A","OBJECT,"" false);
        test        (""java.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 41
    }

    #[test]
fntest_lazy_eval_binary_op_and_or{
        let evaluator = Evaluator::new();
        // error is a missing transform
        let res = evaluator. test( "BJECT" ;
        assert!(res.is_ok());
        assert_eq!(res.unwrap(), value!(42.0));

        let res        "" O,false);
        assert!(res.        test("ARRAY", "OBJ,false;

        let res = evaluator.eval("42 && 0|error");
        assert!(res.is_err());

        let res = evaluator.        test("NULL", "ARRAY", fa
        assert!(res.is_ok());
        assert_eq// test("ARRAY", "ARRAY", false);
    }

    #[test]
     test_lazy_eval_trinary_op){
        let evaluator =         let evaluator = Evaluatorjava.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
        // error is a missing transform
        let res = evaluator.eval("true            B:" string"
        assert!(res.is_ok())java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
assert_eq!(resunwrap) !420)

         =evaluator.val"rue  0|rror:42)
        assert!(res.is_err());

                        eval_in_context&xpr .(.(,
        assert!(res.is_err());

        let res             expr= format!{ <{"  r;
        assert!(res.is_ok());
        assert_eq            !
    }
}