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}
130
131impl fmt::Display for ErrorKind {
132    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
133        let error_message = match self {
134            Self::ExpectedTupleType => "expected tuple type",
135            Self::CanOnlyHaveFunctionCallAtStartOfPostfixChain => "function calls only allowed at start of chain",
136            // Function and Method Errors
137            Self::NoAssociatedFunction(_, _) => "no associated function",
138            Self::UnknownMemberFunction(_) => "unknown member function",
139            Self::MissingMemberFunction(_, _) => "missing member function",
140            Self::WrongNumberOfArguments(_, _) => "wrong number of arguments",
141            Self::TooManyParameters { .. } => "too many parameters",
142            Self::CallsCanNotBePartOfChain => "calls cannot be part of a chain",
143            Self::ExpectedLambda => "expected a lambda",
144
145            // Variable and Type Errors
146            Self::UnknownVariable => "unknown variable",
147            Self::UnknownIdentifier(_) => "unknown identifier",
148            Self::UnknownTypeReference => "unknown type",
149            Self::UnusedVariablesCanNotBeMut => "unused variable cannot be mutable",
150            Self::VariableTypeMustBeBlittable(_) => "variable type must be blittable",
151            Self::OverwriteVariableWithAnotherType => {
152                "cannot overwrite variable with a different type"
153            }
154            Self::IncompatibleTypes { .. } => "incompatible types",
155            Self::IncompatibleTypesForAssignment { .. } => "incompatible types for assignment",
156            Self::CouldNotCoerceTo(_) => "could not coerce to type",
157            Self::UnexpectedType => "unexpected type",
158            Self::SelfNotCorrectType => "'self' is not the correct type",
159            Self::SelfNotCorrectMutableState => "'self' has incorrect mutable state",
160            Self::NotAllowedAsReturnType(_) => "not an allowed return type",
161            Self::ParameterTypeCanNotBeStorage(_) => "parameter cannot be of storage type",
162
163            // Mutability Errors
164            Self::ExpectedMutableLocation => "expected a mutable location",
165            Self::CanOnlyOverwriteVariableWithMut => "can only overwrite mutable variables",
166            Self::OverwriteVariableNotAllowedHere => "overwriting variables is not allowed here",
167            Self::VariableIsNotMutable => "variable is not mutable",
168            Self::ArgumentIsNotMutable => "argument is not mutable",
169            Self::ParameterIsNotMutable => "parameter is not mutable",
170            Self::KeyVariableNotAllowedToBeMutable => "key variable cannot be mutable",
171
172            // Struct and Enum Errors
173            Self::UnknownStructTypeReference => "unknown struct type",
174            Self::DuplicateFieldName => "duplicate field name",
175            Self::MissingFieldInStructInstantiation(_, _) => {
176                "missing field in struct instantiation"
177            }
178            Self::UnknownStructField => "unknown struct field",
179            Self::UnknownField => "unknown field",
180            Self::DuplicateFieldInStructInstantiation(_) => {
181                "duplicate field in struct instantiation"
182            }
183            Self::UnknownEnumVariantType => "unknown enum variant",
184            Self::UnknownEnumVariantTypeInPattern => "unknown enum variant in pattern",
185            Self::ExpectedEnumInPattern => "expected an enum in pattern",
186            Self::WrongEnumVariantContainer(_) => "wrong enum variant container",
187            Self::EnumVariantHasNoFields => "enum variant has no fields",
188            Self::UnknownEnumType => "unknown enum type",
189
190            // Optional and Chaining Errors
191            Self::ExpectedOptional => "expected optional",
192            Self::NoneNeedsExpectedTypeHint => "none requires a type hint",
193            Self::UnwrapCanNotBePartOfChain => "unwrap cannot be part of a chain",
194            Self::NoneCoalesceCanNotBePartOfChain => "none coalesce cannot be part of a chain",
195            Self::InvalidOperatorAfterOptionalChaining => {
196                "invalid operator after optional chaining (?)"
197            }
198            Self::CanNotNoneCoalesce => "cannot none-coalesce",
199
200            // Pattern Matching and Destructuring Errors
201            Self::GuardCanNotHaveMultipleWildcards => "guard cannot have multiple wildcards",
202            Self::WildcardMustBeLastInGuard => "wildcard must be last in guard",
203            Self::GuardMustHaveWildcard => "guard must have a wildcard",
204            Self::GuardHasNoType => "guard has no type",
205            Self::TooManyDestructureVariables => "too many destructure variables",
206            Self::CanNotDestructure => "cannot destructure",
207            Self::ExpressionsNotAllowedInLetPattern => "expressions not allowed in let patterns",
208            Self::EmptyMatch => "match statement is empty",
209            Self::MatchArmsMustHaveTypes => "match arms must have types",
210            Self::MatchMustHaveAtLeastOneArm => "match must have at least one arm",
211
212            // Collection and Data Structure Errors
213            Self::MissingSubscriptMember => "missing subscript member",
214            Self::ArrayIndexMustBeInt(_) => "array index must be an integer",
215            Self::MapKeyTypeMismatch { .. } => "map key type mismatch",
216            Self::MapValueTypeMismatch { .. } => "map value type mismatch",
217            Self::TooManyTupleFields { .. } => "too many tuple fields",
218            Self::ExpectedSlice => "expected a slice",
219            Self::CapacityNotEnough { .. } => "capacity not enough",
220            Self::ExpectedInitializerTarget { .. } => "expected initializer target",
221            Self::NoInferredTypeForEmptyInitializer => "cannot infer type for empty initializer",
222            Self::TooManyInitializerListElementsForStorage { .. } => {
223                "too many elements for storage"
224            }
225
226            // Control Flow Errors
227            Self::BreakOutsideLoop => "break outside of a loop",
228            Self::ContinueOutsideLoop => "continue outside of a loop",
229            Self::ReturnOutsideCompare => "return outside of a compare",
230
231            // Conversion and Operator Errors
232            Self::IntConversionError(_) => "integer conversion error",
233            Self::FloatConversionError(_) => "float conversion error",
234            Self::BoolConversionError => "boolean conversion error",
235            Self::ExpectedBooleanExpression => "expected a boolean expression",
236            Self::OperatorProblem => "operator problem",
237            Self::MissingToString(_) => "missing to_string implementation",
238
239            // Miscellaneous Errors
240            Self::SemanticError(e) => return write!(f, "{e:?}"),
241            Self::NotAnIterator => "not an iterator",
242            Self::NoDefaultImplemented(_) => "no default implementation",
243            Self::UnknownConstant => "unknown constant",
244            Self::NotValidLocationStartingPoint => "not a valid location starting point",
245            Self::UnknownSymbol => "unknown symbol",
246            Self::UnknownModule => "unknown module",
247            Self::CanNotAttachFunctionsToType => "cannot attach functions to this type",
248            Self::NeedStorage => "storage needed",
249        };
250        f.write_str(error_message)
251    }
252}
253
254impl From<SemanticError> for Error {
255    fn from(value: SemanticError) -> Self {
256        Self {
257            node: Node::default(),
258            kind: ErrorKind::SemanticError(value),
259        }
260    }
261}
swamp_semantic/err.rs

swamp_semantic/
err.rs
