swamp_semantic/
err.rs

1/*
2 * Copyright (c) Peter Bjorklund. All rights reserved. https://github.com/swamp/swamp
3 * Licensed under the MIT License. See LICENSE in the project root for license information.
4 */
5use crate::SemanticError;
6use source_map_node::Node;
7use std::fmt;
8use std::num::{ParseFloatError, ParseIntError};
9use swamp_types::prelude::*;
10
11#[derive(Clone, Debug)]
12pub struct Error {
13    pub node: Node,
14    pub kind: ErrorKind,
15}
16#[derive(Clone, Debug)]
17pub enum ErrorKind {
18    NoAssociatedFunction(TypeRef, String),
19    MissingSubscriptMember,
20    UnusedVariablesCanNotBeMut,
21    VariableTypeMustBeBlittable(TypeRef),
22    GuardCanNotHaveMultipleWildcards,
23    WildcardMustBeLastInGuard,
24    GuardMustHaveWildcard,
25    GuardHasNoType,
26    TooManyDestructureVariables,
27    CanNotDestructure,
28    UnknownStructTypeReference,
29    DuplicateFieldName,
30    MissingFieldInStructInstantiation(Vec<String>, AnonymousStructType),
31    UnknownVariable,
32    ArrayIndexMustBeInt(TypeRef),
33    OverwriteVariableWithAnotherType,
34    NoneNeedsExpectedTypeHint,
35    ExpectedMutableLocation,
36    WrongNumberOfArguments(usize, usize),
37    CanOnlyOverwriteVariableWithMut,
38    OverwriteVariableNotAllowedHere,
39    UnknownEnumVariantType,
40    UnknownStructField,
41    UnknownEnumVariantTypeInPattern,
42    ExpectedEnumInPattern,
43    WrongEnumVariantContainer(EnumVariantType),
44    VariableIsNotMutable,
45    ArgumentIsNotMutable,
46    UnknownTypeReference,
47    SemanticError(SemanticError),
48    ExpectedOptional,
49    MapKeyTypeMismatch {
50        expected: TypeRef,
51        found: TypeRef,
52    },
53    MapValueTypeMismatch {
54        expected: TypeRef,
55        found: TypeRef,
56    },
57    IncompatibleTypes {
58        expected: TypeRef,
59        found: TypeRef,
60    },
61    UnknownMemberFunction(TypeRef),
62    ExpressionsNotAllowedInLetPattern,
63    UnknownField,
64    EnumVariantHasNoFields,
65    ExpectedTupleType,
66    TooManyTupleFields {
67        max: usize,
68        got: usize,
69    },
70    ExpectedBooleanExpression,
71    NotAnIterator,
72    IntConversionError(ParseIntError),
73    FloatConversionError(ParseFloatError),
74    BoolConversionError,
75    DuplicateFieldInStructInstantiation(String),
76    UnknownIdentifier(String),
77    NoDefaultImplemented(TypeRef),
78    UnknownConstant,
79    NotValidLocationStartingPoint,
80    CallsCanNotBePartOfChain,
81    UnwrapCanNotBePartOfChain,
82    NoneCoalesceCanNotBePartOfChain,
83    InvalidOperatorAfterOptionalChaining,
84    SelfNotCorrectType,
85    CanNotNoneCoalesce,
86    UnknownSymbol,
87    UnknownEnumType,
88    UnknownModule,
89    BreakOutsideLoop,
90    ReturnOutsideCompare,
91    EmptyMatch,
92    MatchArmsMustHaveTypes,
93    ContinueOutsideLoop,
94    ParameterIsNotMutable,
95    CouldNotCoerceTo(TypeRef),
96    UnexpectedType,
97    CanNotAttachFunctionsToType,
98    MissingMemberFunction(String, TypeRef),
99    ExpectedLambda,
100    ExpectedSlice,
101    MissingToString(TypeRef),
102    IncompatibleTypesForAssignment {
103        expected: TypeRef,
104        found: TypeRef,
105    },
106    CapacityNotEnough {
107        size_requested: usize,
108        capacity: usize,
109    },
110    ExpectedInitializerTarget {
111        destination_type: TypeRef,
112    },
113    NoInferredTypeForEmptyInitializer,
114    TooManyInitializerListElementsForStorage {
115        capacity: usize,
116    },
117    KeyVariableNotAllowedToBeMutable,
118    SelfNotCorrectMutableState,
119    NotAllowedAsReturnType(TypeRef),
120    ParameterTypeCanNotBeStorage(TypeRef),
121    OperatorProblem,
122    MatchMustHaveAtLeastOneArm,
123    NeedStorage,
124    TooManyParameters {
125        encountered: usize,
126        allowed: usize,
127    },
128    CanOnlyHaveFunctionCallAtStartOfPostfixChain,
129    CanNotSubscriptWithThatType,
130    EnumTypeWasntExpectedHere,
131    CanNotInferEnumType,
132}
133
134impl fmt::Display for ErrorKind {
135    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
136        let error_message = match self {
137            Self::EnumTypeWasntExpectedHere => "enum type was not expected here",
138            Self::CanNotInferEnumType => "can not infer enum type",
139            Self::ExpectedTupleType => "expected tuple type",
140            Self::CanOnlyHaveFunctionCallAtStartOfPostfixChain => {
141                "function calls only allowed at start of chain"
142            }
143            Self::CanNotSubscriptWithThatType => {
144                "subscript not possible with that type"
145            }
146            // Function and Method Errors
147            Self::NoAssociatedFunction(_, _) => "no associated function",
148            Self::UnknownMemberFunction(_) => "unknown member function",
149            Self::MissingMemberFunction(_, _) => "missing member function",
150            Self::WrongNumberOfArguments(_, _) => "wrong number of arguments",
151            Self::TooManyParameters { .. } => "too many parameters",
152            Self::CallsCanNotBePartOfChain => "calls cannot be part of a chain",
153            Self::ExpectedLambda => "expected a lambda",
154
155            // Variable and Type Errors
156            Self::UnknownVariable => "unknown variable",
157            Self::UnknownIdentifier(_) => "unknown identifier",
158            Self::UnknownTypeReference => "unknown type",
159            Self::UnusedVariablesCanNotBeMut => "unused variable cannot be mutable",
160            Self::VariableTypeMustBeBlittable(_) => "variable type must be blittable",
161            Self::OverwriteVariableWithAnotherType => {
162                "cannot overwrite variable with a different type"
163            }
164            Self::IncompatibleTypes { .. } => "incompatible types",
165            Self::IncompatibleTypesForAssignment { .. } => "incompatible types for assignment",
166            Self::CouldNotCoerceTo(_) => "could not coerce to type",
167            Self::UnexpectedType => "unexpected type",
168            Self::SelfNotCorrectType => "'self' is not the correct type",
169            Self::SelfNotCorrectMutableState => "'self' has incorrect mutable state",
170            Self::NotAllowedAsReturnType(_) => "not an allowed return type",
171            Self::ParameterTypeCanNotBeStorage(_) => "parameter cannot be of storage type",
172
173            // Mutability Errors
174            Self::ExpectedMutableLocation => "expected a mutable location",
175            Self::CanOnlyOverwriteVariableWithMut => "can only overwrite mutable variables",
176            Self::OverwriteVariableNotAllowedHere => "overwriting variables is not allowed here",
177            Self::VariableIsNotMutable => "variable is not mutable",
178            Self::ArgumentIsNotMutable => "argument is not mutable",
179            Self::ParameterIsNotMutable => "parameter is not mutable",
180            Self::KeyVariableNotAllowedToBeMutable => "key variable cannot be mutable",
181
182            // Struct and Enum Errors
183            Self::UnknownStructTypeReference => "unknown struct type",
184            Self::DuplicateFieldName => "duplicate field name",
185            Self::MissingFieldInStructInstantiation(_, _) => {
186                "missing field in struct instantiation"
187            }
188            Self::UnknownStructField => "unknown struct field",
189            Self::UnknownField => "unknown field",
190            Self::DuplicateFieldInStructInstantiation(_) => {
191                "duplicate field in struct instantiation"
192            }
193            Self::UnknownEnumVariantType => "unknown enum variant",
194            Self::UnknownEnumVariantTypeInPattern => "unknown enum variant in pattern",
195            Self::ExpectedEnumInPattern => "expected an enum in pattern",
196            Self::WrongEnumVariantContainer(_) => "wrong enum variant container",
197            Self::EnumVariantHasNoFields => "enum variant has no fields",
198            Self::UnknownEnumType => "unknown enum type",
199
200            // Optional and Chaining Errors
201            Self::ExpectedOptional => "expected optional",
202            Self::NoneNeedsExpectedTypeHint => "none requires a type hint",
203            Self::UnwrapCanNotBePartOfChain => "unwrap cannot be part of a chain",
204            Self::NoneCoalesceCanNotBePartOfChain => "none coalesce cannot be part of a chain",
205            Self::InvalidOperatorAfterOptionalChaining => {
206                "invalid operator after optional chaining (?)"
207            }
208            Self::CanNotNoneCoalesce => "cannot none-coalesce",
209
210            // Pattern Matching and Destructuring Errors
211            Self::GuardCanNotHaveMultipleWildcards => "guard cannot have multiple wildcards",
212            Self::WildcardMustBeLastInGuard => "wildcard must be last in guard",
213            Self::GuardMustHaveWildcard => "guard must have a wildcard",
214            Self::GuardHasNoType => "guard has no type",
215            Self::TooManyDestructureVariables => "too many destructure variables",
216            Self::CanNotDestructure => "cannot destructure",
217            Self::ExpressionsNotAllowedInLetPattern => "expressions not allowed in let patterns",
218            Self::EmptyMatch => "match statement is empty",
219            Self::MatchArmsMustHaveTypes => "match arms must have types",
220            Self::MatchMustHaveAtLeastOneArm => "match must have at least one arm",
221
222            // Collection and Data Structure Errors
223            Self::MissingSubscriptMember => "missing subscript member",
224            Self::ArrayIndexMustBeInt(_) => "array index must be an integer",
225            Self::MapKeyTypeMismatch { .. } => "map key type mismatch",
226            Self::MapValueTypeMismatch { .. } => "map value type mismatch",
227            Self::TooManyTupleFields { .. } => "too many tuple fields",
228            Self::ExpectedSlice => "expected a slice",
229            Self::CapacityNotEnough { .. } => "capacity not enough",
230            Self::ExpectedInitializerTarget { .. } => "expected initializer target",
231            Self::NoInferredTypeForEmptyInitializer => "cannot infer type for empty initializer",
232            Self::TooManyInitializerListElementsForStorage { .. } => {
233                "too many elements for storage"
234            }
235
236            // Control Flow Errors
237            Self::BreakOutsideLoop => "break outside of a loop",
238            Self::ContinueOutsideLoop => "continue outside of a loop",
239            Self::ReturnOutsideCompare => "return outside of a compare",
240
241            // Conversion and Operator Errors
242            Self::IntConversionError(_) => "integer conversion error",
243            Self::FloatConversionError(_) => "float conversion error",
244            Self::BoolConversionError => "boolean conversion error",
245            Self::ExpectedBooleanExpression => "expected a boolean expression",
246            Self::OperatorProblem => "operator problem",
247            Self::MissingToString(_) => "missing to_string implementation",
248
249            // Miscellaneous Errors
250            Self::SemanticError(e) => return write!(f, "{e:?}"),
251            Self::NotAnIterator => "not an iterator",
252            Self::NoDefaultImplemented(_) => "no default implementation",
253            Self::UnknownConstant => "unknown constant",
254            Self::NotValidLocationStartingPoint => "not a valid location starting point",
255            Self::UnknownSymbol => "unknown symbol",
256            Self::UnknownModule => "unknown module",
257            Self::CanNotAttachFunctionsToType => "cannot attach functions to this type",
258            Self::NeedStorage => "storage needed",
259        };
260        f.write_str(error_message)
261    }
262}
263
264
265impl ErrorKind {
266    #[must_use]
267    pub const fn code(&self) -> usize {
268        match self {
269            Self::NoAssociatedFunction(_, _) => 1,
270            Self::MissingSubscriptMember => 2,
271            Self::UnusedVariablesCanNotBeMut => 3,
272            Self::VariableTypeMustBeBlittable(_) => 4,
273            Self::GuardCanNotHaveMultipleWildcards => 5,
274            Self::WildcardMustBeLastInGuard => 6,
275            Self::GuardMustHaveWildcard => 7,
276            Self::GuardHasNoType => 8,
277            Self::TooManyDestructureVariables => 9,
278            Self::CanNotDestructure => 10,
279            Self::UnknownStructTypeReference => 11,
280            Self::DuplicateFieldName => 12,
281            Self::MissingFieldInStructInstantiation(_, _) => 13,
282            Self::UnknownVariable => 14,
283            Self::ArrayIndexMustBeInt(_) => 15,
284            Self::OverwriteVariableWithAnotherType => 16,
285            Self::NoneNeedsExpectedTypeHint => 17,
286            Self::ExpectedMutableLocation => 18,
287            Self::WrongNumberOfArguments(_, _) => 19,
288            Self::CanOnlyOverwriteVariableWithMut => 20,
289            Self::OverwriteVariableNotAllowedHere => 21,
290            Self::UnknownEnumVariantType => 22,
291            Self::UnknownStructField => 23,
292            Self::UnknownEnumVariantTypeInPattern => 24,
293            Self::ExpectedEnumInPattern => 25,
294            Self::WrongEnumVariantContainer(_) => 26,
295            Self::VariableIsNotMutable => 27,
296            Self::ArgumentIsNotMutable => 28,
297            Self::UnknownTypeReference => 29,
298            Self::SemanticError(_) => 30,
299            Self::ExpectedOptional => 31,
300            Self::MapKeyTypeMismatch { .. } => 32,
301            Self::MapValueTypeMismatch { .. } => 33,
302            Self::IncompatibleTypes { .. } => 34,
303            Self::UnknownMemberFunction(_) => 35,
304            Self::ExpressionsNotAllowedInLetPattern => 36,
305            Self::UnknownField => 37,
306            Self::EnumVariantHasNoFields => 38,
307            Self::ExpectedTupleType => 39,
308            Self::TooManyTupleFields { .. } => 40,
309            Self::ExpectedBooleanExpression => 41,
310            Self::NotAnIterator => 42,
311            Self::IntConversionError(_) => 43,
312            Self::FloatConversionError(_) => 44,
313            Self::BoolConversionError => 45,
314            Self::DuplicateFieldInStructInstantiation(_) => 46,
315            Self::UnknownIdentifier(_) => 47,
316            Self::NoDefaultImplemented(_) => 48,
317            Self::UnknownConstant => 49,
318            Self::NotValidLocationStartingPoint => 50,
319            Self::CallsCanNotBePartOfChain => 51,
320            Self::UnwrapCanNotBePartOfChain => 52,
321            Self::NoneCoalesceCanNotBePartOfChain => 53,
322            Self::InvalidOperatorAfterOptionalChaining => 54,
323            Self::SelfNotCorrectType => 55,
324            Self::CanNotNoneCoalesce => 56,
325            Self::UnknownSymbol => 57,
326            Self::UnknownEnumType => 58,
327            Self::UnknownModule => 59,
328            Self::BreakOutsideLoop => 60,
329            Self::ReturnOutsideCompare => 61,
330            Self::EmptyMatch => 62,
331            Self::MatchArmsMustHaveTypes => 63,
332            Self::ContinueOutsideLoop => 64,
333            Self::ParameterIsNotMutable => 65,
334            Self::CouldNotCoerceTo(_) => 66,
335            Self::UnexpectedType => 67,
336            Self::CanNotAttachFunctionsToType => 68,
337            Self::MissingMemberFunction(_, _) => 69,
338            Self::ExpectedLambda => 70,
339            Self::ExpectedSlice => 71,
340            Self::MissingToString(_) => 72,
341            Self::IncompatibleTypesForAssignment { .. } => 73,
342            Self::CapacityNotEnough { .. } => 74,
343            Self::ExpectedInitializerTarget { .. } => 75,
344            Self::NoInferredTypeForEmptyInitializer => 76,
345            Self::TooManyInitializerListElementsForStorage { .. } => 77,
346            Self::KeyVariableNotAllowedToBeMutable => 78,
347            Self::SelfNotCorrectMutableState => 79,
348            Self::NotAllowedAsReturnType(_) => 80,
349            Self::ParameterTypeCanNotBeStorage(_) => 81,
350            Self::OperatorProblem => 82,
351            Self::MatchMustHaveAtLeastOneArm => 83,
352            Self::NeedStorage => 84,
353            Self::TooManyParameters { .. } => 85,
354            Self::CanOnlyHaveFunctionCallAtStartOfPostfixChain => 86,
355            Self::CanNotSubscriptWithThatType => 87,
356            Self::EnumTypeWasntExpectedHere => 88,
357            Self::CanNotInferEnumType => 89,
358        }
359    }
360}
361
362
363impl From<SemanticError> for Error {
364    fn from(value: SemanticError) -> Self {
365        Self {
366            node: Node::default(),
367            kind: ErrorKind::SemanticError(value),
368        }
369    }
370}
swamp_semantic/err.rs

swamp_semantic/
err.rs
