tremor-script 0.8.0

Tremor Script Interpreter
Documentation
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
// Copyright 2018-2020, Wayfair GmbH
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

// NOTE: We node this because of error_chain
#![allow(clippy::large_enum_variant)]
#![allow(deprecated)]
#![allow(unused_imports)]
#![allow(missing_docs)]

use crate::ast::{self, BaseExpr, Expr, Ident, NodeMetas};
use crate::errors;
use crate::lexer;
use crate::path::ModulePath;
use crate::pos;
use crate::pos::{Location, Range};
use error_chain::error_chain;
use lalrpop_util::ParseError as LalrpopError;
use serde::{Deserialize, Serialize};
pub use simd_json::ValueType;
use simd_json::{prelude::*, BorrowedValue as Value};
use std::num;
use std::ops::{Range as RangeExclusive, RangeInclusive};

/// A Compiletime error capturing the prerpocessors cus at the time of the error
#[derive(Debug)]
pub struct CompilerError {
    /// The original error
    pub error: Error,
    /// The cus
    pub cus: Vec<lexer::CompilationUnit>,
}

impl CompilerError {
    /// Turns this into the underlying error
    pub fn error(self) -> Error {
        self.error
    }
}
impl From<CompilerError> for Error {
    fn from(e: CompilerError) -> Self {
        e.error()
    }
}

#[doc(hidden)]
/// Optimised try
#[macro_export]
macro_rules! stry {
    ($e:expr) => {
        match $e {
            ::std::result::Result::Ok(val) => val,
            ::std::result::Result::Err(err) => return ::std::result::Result::Err(err),
        }
    };
}

#[cfg(test)]
impl PartialEq for Error {
    fn eq(&self, _other: &Error) -> bool {
        // This might be Ok since we try to compare Result in tests
        false
    }
}

type ParserError<'screw_lalrpop> =
    lalrpop_util::ParseError<pos::Location, lexer::Token<'screw_lalrpop>, errors::Error>;

impl From<url::ParseError> for Error {
    fn from(e: url::ParseError) -> Self {
        Self::from(format!("Url Parse Error: {}", e))
    }
}

impl From<Error> for std::io::Error {
    fn from(e: Error) -> Self {
        std::io::Error::new(std::io::ErrorKind::Other, format!("{}", e))
    }
}

impl<'screw_lalrpop> From<ParserError<'screw_lalrpop>> for Error {
    fn from(error: ParserError<'screw_lalrpop>) -> Self {
        match error {
            LalrpopError::UnrecognizedToken {
                token: (start, token, end),
                expected,
            } => ErrorKind::UnrecognizedToken(
                (start.move_up_lines(2), end.move_down_lines(2)).into(),
                (start, end).into(),
                token.to_string(),
                expected.iter().map(|s| s.replace('"', "`")).collect(),
            )
            .into(),
            LalrpopError::ExtraToken {
                token: (start, token, end),
            } => ErrorKind::ExtraToken(
                (start.move_up_lines(2), end.move_down_lines(2)).into(),
                (start, end).into(),
                token.to_string(),
            )
            .into(),
            LalrpopError::InvalidToken { location: start } => {
                let mut end = start;
                end.column += 1;
                ErrorKind::InvalidToken(
                    (start.move_up_lines(2), end.move_down_lines(2)).into(),
                    (start, end).into(),
                )
                .into()
            }
            _ => ErrorKind::ParserError(format!("{:?}", error)).into(),
        }
    }
}

// We need this since we call objects records
fn t2s(t: ValueType) -> &'static str {
    match t {
        ValueType::Null => "null",
        ValueType::Bool => "boolean",
        ValueType::String => "string",
        ValueType::I64 | ValueType::U64 => "integer",
        ValueType::F64 => "float",
        ValueType::Array => "array",
        ValueType::Object => "record",
    }
}

pub(crate) fn best_hint(
    given: &str,
    options: &[String],
    max_dist: usize,
) -> Option<(usize, String)> {
    options
        .iter()
        .map(|option| (distance::damerau_levenshtein(given, &option), option))
        .filter(|(distance, _)| *distance <= max_dist)
        .min()
        .map(|(d, s)| (d, s.clone()))
}
pub(crate) type ErrorLocation = (Option<Range>, Option<Range>);
impl ErrorKind {
    pub(crate) fn cu(&self) -> usize {
        self.expr().0.map(Range::cu).unwrap_or_default()
    }
    pub(crate) fn expr(&self) -> ErrorLocation {
        use ErrorKind::{
            AggrInAggr, ArrayOutOfRange, AssignIntoArray, AssignToConst, BadAccessInEvent,
            BadAccessInGlobal, BadAccessInLocal, BadAccessInState, BadArity, BadArrayIndex,
            BadType, BinaryDrop, BinaryEmit, DecreasingRange, DoubleConst, DoubleStream,
            EmptyScript, ExtraToken, Generic, Grok, InvalidAssign, InvalidBinary, InvalidBitshift,
            InvalidConst, InvalidDrop, InvalidEmit, InvalidExtractor, InvalidFloatLiteral,
            InvalidFn, InvalidHexLiteral, InvalidInfluxData, InvalidIntLiteral, InvalidMod,
            InvalidRecur, InvalidToken, InvalidUnary, Io, JSONError, MergeTypeConflict,
            MissingEffectors, MissingFunction, MissingModule, ModuleNotFound, Msg, NoClauseHit,
            NoConstsAllowed, NoLocalsAllowed, NoObjectError, NotConstant, NotFound, Oops,
            ParseIntError, ParserError, PatchKeyExists, PreprocessorError, QueryStreamNotDefined,
            RuntimeError, TailingHereDoc, TypeConflict, UnexpectedCharacter, UnexpectedEndOfStream,
            UnexpectedEscapeCode, UnrecognizedToken, UnterminatedExtractor, UnterminatedHereDoc,
            UnterminatedIdentLiteral, UnterminatedStringLiteral, UpdateKeyMissing, Utf8Error,
        };
        match self {
            NoClauseHit(outer) | Oops(outer, _, _) => (Some(outer.expand_lines(2)), Some(*outer)),
            QueryStreamNotDefined(outer, inner, _)
            | ArrayOutOfRange(outer, inner, _, _)
            | AssignIntoArray(outer, inner)
            | BadAccessInEvent(outer, inner, _, _)
            | BadAccessInState(outer, inner, _, _)
            | BadAccessInGlobal(outer, inner, _, _)
            | BadAccessInLocal(outer, inner, _, _)
            | BadArity(outer, inner, _, _, _, _)
            | BadArrayIndex(outer, inner, _, _)
            | BadType(outer, inner, _, _, _)
            | BinaryDrop(outer, inner)
            | BinaryEmit(outer, inner)
            | DecreasingRange(outer, inner, _, _)
            | ExtraToken(outer, inner, _)
            | PatchKeyExists(outer, inner, _)
            | InvalidAssign(outer, inner)
            | InvalidBinary(outer, inner, _, _, _)
            | InvalidBitshift(outer, inner)
            | InvalidDrop(outer, inner)
            | InvalidEmit(outer, inner)
            | InvalidRecur(outer, inner)
            | InvalidConst(outer, inner)
            | InvalidMod(outer, inner)
            | InvalidFn(outer, inner)
            | AssignToConst(outer, inner, _)
            | DoubleConst(outer, inner, _)
            | DoubleStream(outer, inner, _)
            | InvalidExtractor(outer, inner, _, _, _)
            | InvalidFloatLiteral(outer, inner)
            | InvalidHexLiteral(outer, inner)
            | InvalidIntLiteral(outer, inner)
            | InvalidToken(outer, inner)
            | InvalidUnary(outer, inner, _, _)
            | MergeTypeConflict(outer, inner, _, _)
            | MissingEffectors(outer, inner)
            | MissingFunction(outer, inner, _, _, _)
            | MissingModule(outer, inner, _, _)
            | ModuleNotFound(outer, inner, _, _)
            | NoLocalsAllowed(outer, inner)
            | NoConstsAllowed(outer, inner)
            | RuntimeError(outer, inner, _, _, _, _)
            | TypeConflict(outer, inner, _, _)
            | UnexpectedCharacter(outer, inner, _)
            | UnexpectedEscapeCode(outer, inner, _, _)
            | UnrecognizedToken(outer, inner, _, _)
            | UnterminatedExtractor(outer, inner, _)
            | UnterminatedIdentLiteral(outer, inner, _)
            | UnterminatedStringLiteral(outer, inner, _)
            | UpdateKeyMissing(outer, inner, _)
            | UnterminatedHereDoc(outer, inner, _)
            | TailingHereDoc(outer, inner, _, _)
            | Generic(outer, inner, _)
            | AggrInAggr(outer, inner)
            | NotConstant(outer, inner) => (Some(*outer), Some(*inner)),
            // Special cases
            EmptyScript
            | NoObjectError(_)
            | NotFound
            | Grok(_)
            | InvalidInfluxData(_, _)
            | Io(_)
            | JSONError(_)
            | Msg(_)
            | ParseIntError(_)
            | ParserError(_)
            | PreprocessorError(_)
            | UnexpectedEndOfStream
            | Utf8Error(_)
            | Self::__Nonexhaustive { .. } => (Some(Range::default()), None),
        }
    }
    pub(crate) fn token(&self) -> Option<String> {
        use ErrorKind::{
            UnexpectedEscapeCode, UnterminatedExtractor, UnterminatedIdentLiteral,
            UnterminatedStringLiteral,
        };
        match self {
            UnterminatedExtractor(_, _, token)
            | UnterminatedStringLiteral(_, _, token)
            | UnterminatedIdentLiteral(_, _, token)
            | UnexpectedEscapeCode(_, _, token, _) => Some(token.to_string()),
            _ => None,
        }
    }
    pub(crate) fn hint(&self) -> Option<String> {
        use ErrorKind::{
            BadAccessInEvent, BadAccessInGlobal, BadAccessInLocal, MissingFunction, MissingModule,
            NoClauseHit, Oops, TypeConflict, UnrecognizedToken,
        };
        match self {
            UnrecognizedToken(outer, inner, t, _) if t == "" && inner.0.absolute == outer.1.absolute => Some("It looks like a `;` is missing at the end of the script".into()),
            UnrecognizedToken(_, _, t, _) if t == "default" || t == "case" => Some("You might have a trailing `,` in the prior statement".into()),
            UnrecognizedToken(_, _, t, l) if t == "event" && l.contains(&("`<ident>`".to_string())) => Some("It looks like you tried to use the key 'event' as part of a path expression, consider quoting it as `event` to make it an identifier or use array like access such as [\"event\"].".into()),
            UnrecognizedToken(_, _, t, l) if t == "-" && l.contains(&("`(`".to_string())) => Some("Try wrapping this expression in parentheses `(` ... `)`".into()),
            UnrecognizedToken(_, _, key, options) => {
                match best_hint(&key, &options, 3) {
                    Some((_d, o)) => Some(format!("Did you mean to use {}?", o)),
                    _ => None
                }
            }
            BadAccessInLocal(_, _, key, _) if key == "nil" => {
                Some("Did you mean null?".to_owned())
            }

            BadAccessInLocal(_, _, key, options) => {
                let mut options = options.clone();
                options.push("event".to_owned());
                options.push("true".to_owned());
                options.push("false".to_owned());
                options.push("null".to_owned());
                match best_hint(&key, &options, 2) {
                    Some((_d, o)) => Some(format!("Did you mean to use `{}`?", o)),
                    _ => None
                }
            }

            BadAccessInEvent(_, _, key, options) |BadAccessInGlobal(_, _, key, options) => {
                match best_hint(&key, &options, 2) {
                    Some((_d, o)) => Some(format!("Did you mean to use `{}`?", o)),
                    _ => None
                }
            }
            TypeConflict(_, _, ValueType::F64, expected) => match expected.as_slice() {
                [ValueType::I64] => Some(
                    "You can use math::trunc() and related functions to ensure numbers are integers."
                        .to_owned(),
                ),
                _ => None
            },
            MissingModule(_, _, m, _) if m == "object" => Some("Did you mean to use the `record` module".into()),
            MissingModule(_, _, _, Some((_, suggestion))) | MissingFunction(_, _, _, _, Some((_, suggestion))) => Some(format!("Did you mean `{}`?", suggestion)),

            NoClauseHit(_) => Some("Consider adding a `default => null` clause at the end of your match or validate full coverage beforehand.".into()),
            Oops(_, id, _) => Some(format!("Please take the error output script and test data and open a ticket, this should not happen.\nhttps://github.com/wayfair-tremor/tremor-runtime/issues/new?labels=bug&template=bug_report.md&title=Opps%20{}", id)),
            _ => None,
        }
    }
}

impl Error {
    /// the context of the error
    pub fn context(&self) -> ErrorLocation {
        self.0.expr()
    }
    /// The compilation unit
    pub fn cu(&self) -> usize {
        self.0.cu()
    }

    pub(crate) fn hint(&self) -> Option<String> {
        self.0.hint()
    }
    pub(crate) fn token(&self) -> Option<String> {
        self.0.token()
    }
}

fn choices<T>(choices: &[T]) -> String
where
    T: ToString,
{
    if choices.len() == 1 {
        choices[0].to_string()
    } else {
        format!(
            "one of {}",
            choices
                .iter()
                .map(|e| e.to_string())
                .collect::<Vec<String>>()
                .join(", ")
        )
    }
}

error_chain! {
    foreign_links {
        Grok(grok::Error);
        Io(std::io::Error);
        JSONError(simd_json::Error);
        ParseIntError(num::ParseIntError);
        Utf8Error(std::str::Utf8Error);
        NoObjectError(simd_json::KnownKeyError);
    }
    errors {
        /*
         * ParserError
         */
         /// A unrecognized token
        UnrecognizedToken(range: Range, loc: Range, token: String, expected: Vec<String>) {
            description("Unrecognized token")
                display("Found the token `{}` but expected {}", token, choices(expected))
        }
        ExtraToken(range: Range, loc: Range, token: String) {
            description("Extra token")
                display("Found an extra token: `{}` that does not belong there", token)
        }
        InvalidToken(range: Range, loc: Range) {
            description("Invalid token")
                display("Invalid token")
        }
        /*
         * Generic
         */
        Generic(expr: Range, inner: Range, msg: String) {
            description("Generic error")
                display("{}", msg)
        }

        EmptyScript {
            description("No expressions were found in the script")
                display("No expressions were found in the script")
        }
        NotConstant(expr: Range, inner: Range) {
            description("The expression isn't constant and can't be evaluated at compile time")
                display("The expression isn't constant and can't be evaluated at compile time")
        }
        TypeConflict(expr: Range, inner: Range, got: ValueType, expected: Vec<ValueType>) {
            description("Conflicting types")
                display("Conflicting types, got {} but expected {}", t2s(*got), choices(&expected.iter().map(|v| t2s(*v).to_string()).collect::<Vec<String>>()))
        }
        Oops(expr: Range, id: u64, msg: String) {
            description("Something went wrong and we're not sure what it was")
                display("Something went wrong and we're not sure what it was: {}", msg)
        }
        NotFound {
            description("Something wasn't found, aka NoneError.")
                display("Something wasn't found, aka NoneError.")
        }
        /*
         * Functions
         */
        BadArity(expr: Range, inner: Range, m: String, f: String, a: RangeInclusive<usize>, calling_a: usize) {
            description("Bad arity for function")
                display("Bad arity for function {}::{}/{:?} but was called with {} arguments", m, f, a, calling_a)
        }
        MissingModule(expr: Range, inner: Range, m: String, suggestion: Option<(usize, String)>) {
            description("Call to undefined module")
                display("Call to undefined module {}", m)
        }
        MissingFunction(expr: Range, inner: Range, m: Vec<String>, f: String, suggestion: Option<(usize, String)>) {
            description("Call to undefined function")
                display("Call to undefined function {}::{}", m.join("::"), f)
        }
        AggrInAggr(expr: Range, inner: Range) {
            description("Aggregates can not be called inside of aggregates")
                display("Aggregates can not be called inside of aggregates")
        }
        BadType(expr: Range, inner: Range, m: String, f: String, a: usize) {
            description("Bad type passed to function")
                display("Bad type passed to function {}::{}/{}", m, f, a)
        }
        RuntimeError(expr: Range, inner: Range, m: String, f: String,  a: usize, c: String) {
            description("Runtime error in function")
                display("Runtime error in function {}::{}/{}: {}", m, f, a, c)
        }
        InvalidRecur(expr: Range, inner: Range) {
            description("Can not recur from this location")
                display("Can not recur from this location")
        }
        /*
         * Lexer, Preprocessor and Parser
         */
        UnterminatedExtractor(expr: Range, inner: Range, extractor: String) {
            description("Unterminated extractor")
                display("It looks like you forgot to terminate an extractor with a closing '|'")
        }

        UnterminatedStringLiteral(expr: Range, inner: Range, string: String) {
            description("Unterminated string")
                display("It looks like you forgot to terminate a string with a closing '\"'")
        }

        UnterminatedHereDoc(expr: Range, inner: Range, string: String) {
            description("Unterminated heredoc")
                display("It looks like you forgot to terminate a here doc with with a closing '\"\"\"'")
        }
        TailingHereDoc(expr: Range, inner: Range, hd: String, ch: char) {
            description("Tailing Characters after opening a here doc")
                display("It looks like you have characters tailing the here doc opening, it needs to be followed by a newline")
        }

        UnterminatedIdentLiteral(expr: Range, inner: Range, extractor: String)
        {
            description("Unterminated ident")
                display("It looks like you forgot to terminate an ident with a closing '`'")

        }

        UnexpectedCharacter(expr: Range, inner: Range, found: char){
            description("An unexpected character was found")
                display("An unexpected character '{}' was found", found)
        }


        UnexpectedEscapeCode(expr: Range, inner: Range, token: String, found: char){
            description("An unexpected escape code was found")
                display("An unexpected escape code '{}' was found", found)

        }

        InvalidHexLiteral(expr: Range, inner: Range){
            description("An invalid hexadecimal")
                display("An invalid hexadecimal")

        }

        InvalidIntLiteral(expr: Range, inner: Range) {
            description("An invalid integer literal")
                display("An invalid integer literal")

        }
        InvalidFloatLiteral(expr: Range, inner: Range) {
            description("An invalid float literal")
                display("An invalid float literal")

        }

        UnexpectedEndOfStream {
            description("An unexpected end of stream was found")
                display("An unexpected end of stream was found")

        }

        /*
         * Preprocessor
         */
         PreprocessorError(msg: String) {
            description("Preprocessor due to user error")
                display("Preprocessor due to user error: {}", msg)
         }

        ModuleNotFound(range: Range, loc: Range, resolved_relative_file_path: String, expected: Vec<String>) {
            description("Module not found")
                display("Module `{}` not found or not readable error in module path: {}",
                resolved_relative_file_path.trim(),
                expected.iter().map(|x| format!("\n                         - {}", x)).collect::<Vec<String>>().join(""))
        }


        /*
         * Parser
         */
        ParserError(pos: String) {
            description("Parser user error")
                display("Parser user error: {}", pos)
        }
        /*
         * Resolve / Assign path walking
         */

        BadAccessInLocal(expr: Range, inner: Range, key: String, options: Vec<String>) {
            description("Trying to access a non existing local key")
                display("Trying to access a non existing local key `{}`", key)
        }
        BadAccessInGlobal(expr: Range, inner: Range, key: String, options: Vec<String>) {
            description("Trying to access a non existing global key")
                display("Trying to access a non existing global key `{}`", key)
        }
        BadAccessInEvent(expr: Range, inner: Range, key: String, options: Vec<String>) {
            description("Trying to access a non existing event key")
                display("Trying to access a non existing event key `{}`", key)
        }
        BadAccessInState(expr: Range, inner: Range, key: String, options: Vec<String>) {
            description("Trying to access a non existing state key")
                display("Trying to access a non existing state key `{}`", key)
        }
        BadArrayIndex(expr: Range, inner: Range, idx: Value<'static>, len: usize) {
            description("Trying to index into an array with invalid index")
                display("Bad array index, got `{}` but expected an index in the range 0:{}",
                        idx, len)
        }
        DecreasingRange(expr: Range, inner: Range, start_idx: usize, end_idx: usize) {
            description("A range's end cannot be smaller than its start")
                display("A range's end cannot be smaller than its start, {}:{} is invalid",
                        start_idx, end_idx)
        }
        ArrayOutOfRange(expr: Range, inner: Range, r: RangeExclusive<usize>, len: usize) {
            description("Array index out of bounds")
                display("Array index out of bounds, got {} but expected {}",
                        if r.start == r.end {
                            format!("index {}", r.start)
                        } else {
                            format!("index range {}:{}", r.start, r.end)
                        },
                        if r.start == r.end {
                            format!("an index in the range 0:{}", len)
                        } else {
                            format!("a subrange of 0:{}", len)
                        })
        }
        AssignIntoArray(expor: Range, inner: Range) {
            description("Can not assign into an array")
                display("It is not supported to assign value into an array")
        }
        InvalidAssign(expor: Range, inner: Range) {
            description("You can not assign that")
                display("You are trying to assign to a value that isn't valid")
        }
        InvalidConst(expr: Range, inner: Range) {
            description("Can't declare a const here")
                display("Can't declare a const here")
        }
        InvalidMod(expr: Range, inner: Range) {
            description("Can't declare a module here")
                display("Can't declare a module here")
        }
        InvalidFn(expr: Range, inner: Range) {
            description("Can't declare a function here")
                display("Can't declare a function here")
        }
        DoubleConst(expr: Range, inner: Range, name: String) {
            description("Can't declare a constant twice")
                display("Can't declare the constant `{}` twice", name)
        }
        DoubleStream(expr: Range, inner: Range, name: String) {
            description("Can't declare a stream twice")
                display("Can't declare the stream `{}` twice", name)
        }
        AssignToConst(expr: Range, inner: Range, name: String) {
            description("Can't assign to a constant")
                display("Can't assign to the `{}` constant", name)
        }
        /*
         * Emit & Drop
         */
        InvalidEmit(expr: Range, inner: Range) {
            description("Can not emit from this location")
                display("Can not emit from this location")
        }
        InvalidDrop(expr: Range, inner: Range) {
            description("Can not drop from this location")
                display("Can not drop from this location")

        }
        BinaryEmit(expr: Range, inner: Range) {
            description("Please enclose the value you want to emit")
                display("The expression can be read as a binary expression, please put the value you wan to emit in parentheses.")
        }
        BinaryDrop(expr: Range, inner: Range) {
            description("Please enclose the value you want to drop")
                display("The expression can be read as a binary expression, please put the value you wan to drop in parentheses.")
        }
        /*
         * Operators
         */
        InvalidUnary(expr: Range, inner: Range, op: ast::UnaryOpKind, val: ValueType) {
            description("Invalid unary operation")
                display("The unary operation `{}` is not defined for the type `{}`", op, t2s(*val))
        }
        InvalidBinary(expr: Range, inner: Range, op: ast::BinOpKind, left: ValueType, right: ValueType) {
            description("Invalid binary operation")
                display("The binary operation `{}` is not defined for the type `{}` and `{}`", op, t2s(*left), t2s(*right))
        }
        InvalidBitshift(expr: Range, inner: Range) {
            description("Invalid value for bitshift")
                display("RHS value is larger than or equal to the number of bits in LHS value")
        }

        /*
         * match
         */
        InvalidExtractor(expr: Range, inner: Range, name: String, pattern: String, error: String){
            description("Invalid tilde predicate pattern")
                display("Invalid tilde predicate pattern: {}", error)
        }
        NoClauseHit(expr: Range){
            description("A match expression executed but no clause matched")
                display("A match expression executed but no clause matched")
        }
        MissingEffectors(expr: Range, inner: Range) {
            description("The clause has no effectors")
                display("The clause is missing a body")
        }
        /*
         * Patch
         */
        PatchKeyExists(expr: Range, inner: Range, key: String) {
            description("The key that is supposed to be written to already exists")
                display("The key that is supposed to be written to already exists: {}", key)
        }
        UpdateKeyMissing(expr: Range, inner: Range, key:String) {
            description("The key that is supposed to be updated does not exists")
                display("The key that is supposed to be updated does not exists: {}", key)
        }

        MergeTypeConflict(expr: Range, inner: Range, key:String, val: ValueType) {
            description("Merge can only be performed on keys that either do not exist or are records")
                display("Merge can only be performed on keys that either do not exist or are records but the key '{}' has the type {}", key, t2s(*val))
        }

        InvalidInfluxData(s: String, e: tremor_influx::DecoderError) {
            description("Invalid Influx Line Protocol data")
                display("Invalid Influx Line Protocol data: {}\n{}", e, s)
        }

        /*
         * Query stream declarations
         */
        QueryStreamNotDefined(stmt: Range, inner: Range, name: String) {
            description("Stream is not defined")
                display("Stream is not defined: {}", name)
        }
        NoLocalsAllowed(stmt: Range, inner: Range) {
            description("Local variables are not allowed here")
                display("Local variables are not allowed here")
        }
        NoConstsAllowed(stmt: Range, inner: Range) {
            description("Local variables are not allowed here")
                display("Local variables are not allowed here")
        }
    }
}

/// Creates an stream not defined error
#[allow(clippy::borrowed_box)]
pub fn query_stream_not_defined<T, S: BaseExpr, I: BaseExpr>(
    stmt: &Box<S>,
    inner: &I,
    name: String,
    meta: &NodeMetas,
) -> Result<T> {
    Err(ErrorKind::QueryStreamNotDefined(stmt.extent(meta), inner.extent(meta), name).into())
}

/// Creates a guard not bool error
#[allow(clippy::borrowed_box)]
pub fn query_guard_not_bool<T, O: BaseExpr, I: BaseExpr>(
    stmt: &O,
    inner: &I,
    got: &Value,
    meta: &NodeMetas,
) -> Result<T> {
    error_type_conflict_mult(stmt, inner, got.value_type(), vec![ValueType::Bool], meta)
}

pub(crate) fn error_generic<T, O: BaseExpr, I: BaseExpr, S: ToString>(
    outer: &O,
    inner: &I,
    error: &S,
    meta: &NodeMetas,
) -> Result<T> {
    Err(ErrorKind::Generic(outer.extent(meta), inner.extent(meta), error.to_string()).into())
}

pub(crate) fn error_type_conflict_mult<T, O: BaseExpr, I: BaseExpr>(
    outer: &O,
    inner: &I,
    got: ValueType,
    expected: Vec<ValueType>,
    meta: &NodeMetas,
) -> Result<T> {
    Err(ErrorKind::TypeConflict(outer.extent(meta), inner.extent(meta), got, expected).into())
}

pub(crate) fn error_no_locals<T, O: BaseExpr, I: BaseExpr>(
    outer: &O,
    inner: &I,
    meta: &NodeMetas,
) -> Result<T> {
    Err(ErrorKind::NoLocalsAllowed(outer.extent(meta), inner.extent(meta)).into())
}

pub(crate) fn error_no_consts<T, O: BaseExpr, I: BaseExpr>(
    outer: &O,
    inner: &I,
    meta: &NodeMetas,
) -> Result<T> {
    Err(ErrorKind::NoConstsAllowed(outer.extent(meta), inner.extent(meta)).into())
}

pub(crate) fn error_need_obj<T, O: BaseExpr, I: BaseExpr>(
    outer: &O,
    inner: &I,
    got: ValueType,
    meta: &NodeMetas,
) -> Result<T> {
    error_type_conflict_mult(outer, inner, got, vec![ValueType::Object], meta)
}
pub(crate) fn error_need_arr<T, O: BaseExpr, I: BaseExpr>(
    outer: &O,
    inner: &I,
    got: ValueType,
    meta: &NodeMetas,
) -> Result<T> {
    error_type_conflict_mult(outer, inner, got, vec![ValueType::Array], meta)
}

pub(crate) fn error_need_str<T, O: BaseExpr, I: BaseExpr>(
    outer: &O,
    inner: &I,
    got: ValueType,
    meta: &NodeMetas,
) -> Result<T> {
    error_type_conflict_mult(outer, inner, got, vec![ValueType::String], meta)
}

pub(crate) fn error_need_int<T, O: BaseExpr, I: BaseExpr>(
    outer: &O,
    inner: &I,
    got: ValueType,
    meta: &NodeMetas,
) -> Result<T> {
    error_type_conflict_mult(outer, inner, got, vec![ValueType::I64], meta)
}

pub(crate) fn error_type_conflict<T, O: BaseExpr, I: BaseExpr>(
    outer: &O,
    inner: &I,
    got: ValueType,
    expected: ValueType,
    meta: &NodeMetas,
) -> Result<T> {
    error_type_conflict_mult(outer, inner, got, vec![expected], meta)
}

pub(crate) fn error_guard_not_bool<T, O: BaseExpr, I: BaseExpr>(
    outer: &O,
    inner: &I,
    got: &Value,
    meta: &NodeMetas,
) -> Result<T> {
    error_type_conflict(outer, inner, got.value_type(), ValueType::Bool, meta)
}

pub(crate) fn error_invalid_unary<T, O: BaseExpr, I: BaseExpr>(
    outer: &O,
    inner: &I,
    op: ast::UnaryOpKind,
    val: &Value,
    meta: &NodeMetas,
) -> Result<T> {
    Err(
        ErrorKind::InvalidUnary(outer.extent(meta), inner.extent(meta), op, val.value_type())
            .into(),
    )
}

pub(crate) fn error_invalid_binary<T, O: BaseExpr, I: BaseExpr>(
    outer: &O,
    inner: &I,
    op: ast::BinOpKind,
    left: &Value,
    right: &Value,
    meta: &NodeMetas,
) -> Result<T> {
    Err(ErrorKind::InvalidBinary(
        outer.extent(meta),
        inner.extent(meta),
        op,
        left.value_type(),
        right.value_type(),
    )
    .into())
}

pub(crate) fn error_invalid_bitshift<T, O: BaseExpr, I: BaseExpr>(
    outer: &O,
    inner: &I,
    meta: &NodeMetas,
) -> Result<T> {
    Err(ErrorKind::InvalidBitshift(outer.extent(meta), inner.extent(meta)).into())
}

pub(crate) fn error_no_clause_hit<T, O: BaseExpr>(outer: &O, meta: &NodeMetas) -> Result<T> {
    Err(ErrorKind::NoClauseHit(outer.extent(meta)).into())
}

pub(crate) fn error_oops<T, O: BaseExpr, S: ToString + ?Sized>(
    outer: &O,
    id: u64,
    msg: &S,
    meta: &NodeMetas,
) -> Result<T> {
    Err(ErrorKind::Oops(outer.extent(meta), id, msg.to_string()).into())
}

pub(crate) fn error_patch_key_exists<T, O: BaseExpr, I: BaseExpr>(
    outer: &O,
    inner: &I,
    key: String,
    meta: &NodeMetas,
) -> Result<T> {
    Err(ErrorKind::PatchKeyExists(outer.extent(meta), inner.extent(meta), key).into())
}

pub(crate) fn error_patch_update_key_missing<T, O: BaseExpr, I: BaseExpr>(
    outer: &O,
    inner: &I,
    key: String,
    meta: &NodeMetas,
) -> Result<T> {
    Err(ErrorKind::UpdateKeyMissing(outer.extent(meta), inner.extent(meta), key).into())
}
pub(crate) fn error_missing_effector<T, O: BaseExpr, I: BaseExpr>(
    outer: &O,
    inner: &I,
    meta: &NodeMetas,
) -> Result<T> {
    Err(ErrorKind::MissingEffectors(outer.extent(meta), inner.extent(meta)).into())
}

pub(crate) fn error_patch_merge_type_conflict<T, O: BaseExpr, I: BaseExpr>(
    outer: &O,
    inner: &I,
    key: String,
    val: &Value,
    meta: &NodeMetas,
) -> Result<T> {
    Err(ErrorKind::MergeTypeConflict(
        outer.extent(meta),
        inner.extent(meta),
        key,
        val.value_type(),
    )
    .into())
}

pub(crate) fn error_assign_array<T, O: BaseExpr, I: BaseExpr>(
    outer: &O,
    inner: &I,
    meta: &NodeMetas,
) -> Result<T> {
    Err(ErrorKind::AssignIntoArray(outer.extent(meta), inner.extent(meta)).into())
}
pub(crate) fn error_invalid_assign_target<T, O: BaseExpr>(
    outer: &O,
    meta: &NodeMetas,
) -> Result<T> {
    let inner: Range = outer.extent(meta);

    Err(ErrorKind::InvalidAssign(inner.expand_lines(2), inner).into())
}
pub(crate) fn error_assign_to_const<T, O: BaseExpr>(
    outer: &O,
    name: String,
    meta: &NodeMetas,
) -> Result<T> {
    let inner: Range = outer.extent(meta);

    Err(ErrorKind::AssignToConst(inner.expand_lines(2), inner, name).into())
}
pub(crate) fn error_array_out_of_bound<'script, T, O: BaseExpr, I: BaseExpr>(
    outer: &O,
    inner: &I,
    path: &ast::Path<'script>,
    r: RangeExclusive<usize>,
    len: usize,
    meta: &NodeMetas,
) -> Result<T> {
    let expr: Range = outer.extent(meta);
    // FIXME: Why match on `path` when all arms do the same?!
    // -> ideally: put the `path` into the `ErrorKind::ArrayOutOfRange`, handle in display
    //        but: not trivial: `Path` is parametric in non-'static lifetime 'script
    Err(match path {
        ast::Path::Local(_path) | ast::Path::Const(_path) => {
            ErrorKind::ArrayOutOfRange(expr, inner.extent(meta), r, len).into()
        }
        ast::Path::Meta(_path) => {
            ErrorKind::ArrayOutOfRange(expr, inner.extent(meta), r, len).into()
        }
        ast::Path::Event(_path) => {
            ErrorKind::ArrayOutOfRange(expr, inner.extent(meta), r, len).into()
        }
        ast::Path::State(_path) => {
            ErrorKind::ArrayOutOfRange(expr, inner.extent(meta), r, len).into()
        }
    })
}

pub(crate) fn error_bad_array_index<'script, 'idx, T, O: BaseExpr, I: BaseExpr>(
    outer: &O,
    inner: &I,
    path: &ast::Path<'script>,
    idx: &Value<'idx>,
    len: usize,
    meta: &NodeMetas,
) -> Result<T> {
    let expr: Range = outer.extent(meta);
    let idx = idx.clone_static();
    Err(match path {
        ast::Path::Local(_path) | ast::Path::Const(_path) => {
            ErrorKind::BadArrayIndex(expr, inner.extent(meta), idx, len).into()
        }
        ast::Path::Meta(_path) => {
            ErrorKind::BadArrayIndex(expr, inner.extent(meta), idx, len).into()
        }
        ast::Path::Event(_path) => {
            ErrorKind::BadArrayIndex(expr, inner.extent(meta), idx, len).into()
        }
        ast::Path::State(_path) => {
            ErrorKind::BadArrayIndex(expr, inner.extent(meta), idx, len).into()
        }
    })
}
pub(crate) fn error_decreasing_range<'script, T, O: BaseExpr, I: BaseExpr>(
    outer: &O,
    inner: &I,
    path: &ast::Path<'script>,
    start_idx: usize,
    end_idx: usize,
    meta: &NodeMetas,
) -> Result<T> {
    let expr: Range = outer.extent(meta);
    Err(match path {
        ast::Path::Local(_path) | ast::Path::Const(_path) => {
            ErrorKind::DecreasingRange(expr, inner.extent(meta), start_idx, end_idx).into()
        }
        ast::Path::Meta(_path) => {
            ErrorKind::DecreasingRange(expr, inner.extent(meta), start_idx, end_idx).into()
        }
        ast::Path::Event(_path) => {
            ErrorKind::DecreasingRange(expr, inner.extent(meta), start_idx, end_idx).into()
        }
        ast::Path::State(_path) => {
            ErrorKind::DecreasingRange(expr, inner.extent(meta), start_idx, end_idx).into()
        }
    })
}

pub(crate) fn error_bad_key<'script, T, O: BaseExpr, I: BaseExpr>(
    outer: &O,
    inner: &I,
    path: &ast::Path<'script>,
    key: String,
    options: Vec<String>,
    meta: &NodeMetas,
) -> Result<T> {
    let expr: Range = outer.extent(meta);
    Err(match path {
        ast::Path::Local(_p) | ast::Path::Const(_p) => {
            ErrorKind::BadAccessInLocal(expr, inner.extent(meta), key, options).into()
        }
        ast::Path::Meta(_p) => {
            ErrorKind::BadAccessInGlobal(expr, inner.extent(meta), key, options).into()
        }
        ast::Path::Event(_p) => {
            ErrorKind::BadAccessInEvent(expr, inner.extent(meta), key, options).into()
        }
        ast::Path::State(_p) => {
            ErrorKind::BadAccessInState(expr, inner.extent(meta), key, options).into()
        }
    })
}