GCC Code Coverage Report

Directory: ../
Coverage: low: ≥ 0% medium: ≥ 75.0% high: ≥ 90.0%
Coverage Exec / Excl / Total
Lines: 87.6% 92 / 0 / 105
Functions: 100.0% 4 / 0 / 4
Branches: 58.1% 129 / 0 / 222
src/typechecker/TypeMatcher.cpp
Line Branch Exec Source
1 // Copyright (c) 2021-2026 ChilliBits. All rights reserved.
2
3 #include "TypeMatcher.h"
4
5 #include <exception/SemanticError.h>
6 #include <model/GenericType.h>
7 #include <model/Interface.h>
8 #include <model/Struct.h>
9 #include <symboltablebuilder/Scope.h>
10
11 namespace spice::compiler {
12
13 15914 bool TypeMatcher::matchRequestedToCandidateTypes(const QualTypeList &candidateTypes, const QualTypeList &reqTypes,
14 TypeMapping &typeMapping, ResolverFct &resolverFct, bool strictQualifiers) {
15 // Check if the size of template types matches
16
1/2
✗ Branch 4 → 5 not taken.
✓ Branch 4 → 6 taken 15914 times.
 15914 if (reqTypes.size() != candidateTypes.size())
17 ✗ return false;
18
19 // Loop through both lists at the same time and match each pair of template types individually
20
2/2
✓ Branch 14 → 7 taken 19315 times.
✓ Branch 14 → 15 taken 15914 times.
 35229 for (size_t i = 0; i < candidateTypes.size(); i++) {
21 19315 const QualType &reqType = reqTypes.at(i);
22 19315 const QualType &candidateType = candidateTypes.at(i);
23
24 // Match the pair of template types
25
1/2
✗ Branch 10 → 11 not taken.
✓ Branch 10 → 12 taken 19315 times.
 19315 if (!matchRequestedToCandidateType(candidateType, reqType, typeMapping, resolverFct, strictQualifiers))
26 ✗ return false;
27 }
28 15914 return true;
29 }
30
31 343106 bool TypeMatcher::matchRequestedToCandidateType(QualType candidateType, QualType requestedType, TypeMapping &typeMapping,
32 ResolverFct &resolverFct, bool strictQualifierMatching) {
33 // Unwrap as far as possible and remove reference wrappers if possible
34 343106 QualType::unwrapBothWithRefWrappers(candidateType, requestedType);
35
36 // If the candidate does not contain any generic parts, we can simply check for type equality
37
2/2
✓ Branch 4 → 5 taken 241219 times.
✓ Branch 4 → 10 taken 101887 times.
 343106 if (!candidateType.hasAnyGenericParts()) {
38 // Check if the right one is a struct that implements the interface on the left
39
2/2
✓ Branch 6 → 7 taken 17 times.
✓ Branch 6 → 8 taken 241202 times.
 241219 if (candidateType.matchesInterfaceImplementedByStruct(requestedType))
40 17 return true;
41 // Normal equality check
42 241202 return candidateType.matches(requestedType, true, !strictQualifierMatching, true);
43 }
44
45 // Check if the candidate type itself is generic
46
2/2
✓ Branch 11 → 12 taken 43413 times.
✓ Branch 11 → 83 taken 58474 times.
 101887 if (candidateType.isBase(TY_GENERIC)) { // The candidate type itself is generic
47
1/2
✓ Branch 12 → 13 taken 43413 times.
✗ Branch 12 → 118 not taken.
 43413 const QualType candidateBaseType = candidateType.getBase();
48
1/2
✓ Branch 13 → 14 taken 43413 times.
✗ Branch 13 → 118 not taken.
 43413 const std::string &genericTypeName = candidateBaseType.getSubType();
49
50 // Check if we know the concrete type for that generic type name already
51
1/2
✓ Branch 14 → 15 taken 43413 times.
✗ Branch 14 → 118 not taken.
 43413 const auto it = typeMapping.find(genericTypeName);
52
2/2
✓ Branch 17 → 18 taken 10360 times.
✓ Branch 17 → 40 taken 33053 times.
 43413 if (it != typeMapping.end()) { // This is a known generic type
53 10360 QualType knownConcreteType = it->second;
54
55 // Merge qualifiers of candidate type and known concrete type together
56
1/2
✓ Branch 21 → 22 taken 10360 times.
✗ Branch 21 → 113 not taken.
 10360 const TypeQualifiers mergedQualifiers = knownConcreteType.getQualifiers().merge(candidateType.getQualifiers());
57 10360 knownConcreteType.setQualifiers(mergedQualifiers);
58
59 // Remove reference wrapper of candidate type if required
60
3/4
✓ Branch 23 → 24 taken 10360 times.
✗ Branch 23 → 113 not taken.
✓ Branch 24 → 25 taken 9385 times.
✓ Branch 24 → 27 taken 975 times.
 10360 if (!requestedType.isRef())
61
1/2
✓ Branch 25 → 26 taken 9385 times.
✗ Branch 25 → 110 not taken.
 9385 knownConcreteType = knownConcreteType.removeReferenceWrapper();
62
63
8/10
✓ Branch 27 → 28 taken 10360 times.
✗ Branch 27 → 113 not taken.
✓ Branch 28 → 29 taken 975 times.
✓ Branch 28 → 32 taken 9385 times.
✓ Branch 29 → 30 taken 975 times.
✗ Branch 29 → 113 not taken.
✓ Branch 30 → 31 taken 30 times.
✓ Branch 30 → 32 taken 945 times.
✓ Branch 33 → 34 taken 30 times.
✓ Branch 33 → 37 taken 10330 times.
 10360 if (requestedType.isRef() && !knownConcreteType.isRef())
64
2/4
✓ Branch 34 → 35 taken 30 times.
✗ Branch 34 → 111 not taken.
✓ Branch 35 → 36 taken 30 times.
✗ Branch 35 → 111 not taken.
 30 requestedType = requestedType.getContained().toNonConst();
65
66 // Check if the known concrete type matches the requested type
67
1/2
✓ Branch 37 → 38 taken 10360 times.
✗ Branch 37 → 113 not taken.
 10360 return knownConcreteType.matches(requestedType, true, !strictQualifierMatching, true);
68 } else { // This is an unknown generic type
69 // Retrieve generic candidate type by its name
70
1/2
✓ Branch 40 → 41 taken 33053 times.
✗ Branch 40 → 117 not taken.
 33053 const GenericType *genericCandidateBaseType = resolverFct(genericTypeName);
71
1/2
✗ Branch 41 → 42 not taken.
✓ Branch 41 → 43 taken 33053 times.
 33053 assert(genericCandidateBaseType != nullptr);
72
73 // Check if the requested type fulfills all conditions of the generic candidate type
74 33053 QualType newBaseType;
75
3/4
✓ Branch 43 → 44 taken 33053 times.
✗ Branch 43 → 117 not taken.
✓ Branch 44 → 45 taken 8545 times.
✓ Branch 44 → 46 taken 24508 times.
 33053 if (!genericCandidateBaseType->checkConditionsOf(requestedType, newBaseType, true, !strictQualifierMatching))
76 8545 return false;
77
78
1/2
✓ Branch 46 → 47 taken 24508 times.
✗ Branch 46 → 117 not taken.
 24508 QualType substantiatedCandidateType = candidateType.replaceBaseType(newBaseType);
79
80 // Remove reference wrapper of candidate type if required
81
3/4
✓ Branch 47 → 48 taken 24508 times.
✗ Branch 47 → 117 not taken.
✓ Branch 48 → 49 taken 23471 times.
✓ Branch 48 → 51 taken 1037 times.
 24508 if (!requestedType.isRef())
82
1/2
✓ Branch 49 → 50 taken 23471 times.
✗ Branch 49 → 114 not taken.
 23471 substantiatedCandidateType = substantiatedCandidateType.removeReferenceWrapper();
83
84
8/10
✓ Branch 51 → 52 taken 24508 times.
✗ Branch 51 → 117 not taken.
✓ Branch 52 → 53 taken 1037 times.
✓ Branch 52 → 56 taken 23471 times.
✓ Branch 53 → 54 taken 1037 times.
✗ Branch 53 → 117 not taken.
✓ Branch 54 → 55 taken 16 times.
✓ Branch 54 → 56 taken 1021 times.
✓ Branch 57 → 58 taken 16 times.
✓ Branch 57 → 61 taken 24492 times.
 24508 if (requestedType.isRef() && !substantiatedCandidateType.isRef())
85
2/4
✓ Branch 58 → 59 taken 16 times.
✗ Branch 58 → 115 not taken.
✓ Branch 59 → 60 taken 16 times.
✗ Branch 59 → 115 not taken.
 16 requestedType = requestedType.getContained().toNonConst();
86
87
3/4
✓ Branch 61 → 62 taken 24508 times.
✗ Branch 61 → 117 not taken.
✓ Branch 62 → 63 taken 1 time.
✓ Branch 62 → 64 taken 24507 times.
 24508 if (!substantiatedCandidateType.matches(requestedType, true, !strictQualifierMatching, true))
88 1 return false;
89
90 // Zero out all qualifiers in the requested type, that are present in the candidate type
91 // This is to set all qualifiers that are not present in the candidate type to the generic type replacement
92
1/2
✓ Branch 66 → 67 taken 24507 times.
✗ Branch 66 → 117 not taken.
 24507 requestedType.getQualifiers().eraseWithMask(substantiatedCandidateType.getQualifiers());
93
94 // Add to type mapping
95
3/4
✓ Branch 67 → 68 taken 24507 times.
✗ Branch 67 → 117 not taken.
✓ Branch 68 → 69 taken 1603 times.
✓ Branch 68 → 70 taken 22904 times.
 24507 const QualType newMappingType = requestedType.hasAnyGenericParts() ? candidateBaseType : newBaseType;
96
6/10
✓ Branch 71 → 72 taken 24507 times.
✗ Branch 71 → 117 not taken.
✓ Branch 72 → 73 taken 22904 times.
✓ Branch 72 → 79 taken 1603 times.
✓ Branch 73 → 74 taken 22904 times.
✗ Branch 73 → 117 not taken.
✓ Branch 74 → 75 taken 22904 times.
✗ Branch 74 → 79 not taken.
✗ Branch 77 → 78 not taken.
✓ Branch 77 → 79 taken 22904 times.
 24507 assert(newMappingType.is(TY_GENERIC) || newMappingType.is(TY_INVALID) ||
97 newMappingType.getQualifiers().isSigned != newMappingType.getQualifiers().isUnsigned);
98
1/2
✓ Branch 79 → 80 taken 24507 times.
✗ Branch 79 → 117 not taken.
 24507 typeMapping.emplace(genericTypeName, newMappingType);
99
100 24507 return true; // The type was successfully matched, by enriching the type mapping
101 }
102 } else { // The candidate type itself is non-generic, but one or several template or param types are
103 // Check if supertype and subtype are equal
104
2/2
✓ Branch 85 → 86 taken 41097 times.
✓ Branch 85 → 87 taken 17377 times.
 58474 if (requestedType.getSuperType() != candidateType.getSuperType())
105 41097 return false;
106
107 // If we have a function/procedure type, check the param and return types. Otherwise, check the template types
108
3/4
✓ Branch 87 → 88 taken 17377 times.
✗ Branch 87 → 119 not taken.
✓ Branch 88 → 89 taken 22 times.
✓ Branch 88 → 94 taken 17355 times.
 17377 if (candidateType.isOneOf({TY_FUNCTION, TY_PROCEDURE})) {
109 // Check param and return types
110 22 const QualTypeList &candidatePRTypes = candidateType.getFunctionParamAndReturnTypes();
111 22 const QualTypeList &requestedPRTypes = requestedType.getFunctionParamAndReturnTypes();
112
1/2
✗ Branch 92 → 93 not taken.
✓ Branch 92 → 108 taken 22 times.
 22 if (!matchRequestedToCandidateTypes(candidatePRTypes, requestedPRTypes, typeMapping, resolverFct, strictQualifierMatching))
113 ✗ return false;
114 } else {
115
2/2
✓ Branch 97 → 98 taken 1463 times.
✓ Branch 97 → 99 taken 15892 times.
 17355 if (requestedType.getSubType() != candidateType.getSubType())
116 1463 return false;
117
1/2
✗ Branch 101 → 102 not taken.
✓ Branch 101 → 103 taken 15892 times.
 15892 if (requestedType.getBodyScope()->parent != candidateType.getBodyScope()->parent)
118 ✗ return false;
119
120 // Check template types
121 15892 const QualTypeList &candidateTTypes = candidateType.getTemplateTypes();
122 15892 const QualTypeList &requestedTTypes = requestedType.getTemplateTypes();
123
1/2
✗ Branch 106 → 107 not taken.
✓ Branch 106 → 108 taken 15892 times.
 15892 if (!matchRequestedToCandidateTypes(candidateTTypes, requestedTTypes, typeMapping, resolverFct, strictQualifierMatching))
124 ✗ return false;
125 }
126
127 15914 return true; // All requested template types match to their respective candidate template type -> successfully matched
128 }
129 }
130
131 7710 void TypeMatcher::substantiateTypesWithTypeMapping(QualTypeList &qualTypes, const TypeMapping &typeMapping, const ASTNode *node) {
132
2/2
✓ Branch 18 → 4 taken 2029 times.
✓ Branch 18 → 19 taken 7710 times.
 17449 for (QualType &qualType : qualTypes)
133
3/4
✓ Branch 6 → 7 taken 2029 times.
✗ Branch 6 → 20 not taken.
✓ Branch 7 → 8 taken 949 times.
✓ Branch 7 → 9 taken 1080 times.
 2029 if (qualType.hasAnyGenericParts())
134
1/2
✓ Branch 8 → 9 taken 949 times.
✗ Branch 8 → 20 not taken.
 949 substantiateTypeWithTypeMapping(qualType, typeMapping, node);
135 7710 }
136
137 76217 void TypeMatcher::substantiateTypeWithTypeMapping(QualType &type, const TypeMapping &typeMapping, // NOLINT(*-no-recursion)
138 const ASTNode *node) {
139
1/2
✗ Branch 3 → 4 not taken.
✓ Branch 3 → 5 taken 76217 times.
 76217 assert(type.hasAnyGenericParts());
140
141 // Check if the type itself is generic
142
2/2
✓ Branch 6 → 7 taken 52872 times.
✓ Branch 6 → 17 taken 23345 times.
 76217 if (type.isBase(TY_GENERIC)) { // The symbol type itself is generic
143
3/6
✓ Branch 7 → 8 taken 52872 times.
✗ Branch 7 → 104 not taken.
✓ Branch 8 → 9 taken 52872 times.
✗ Branch 8 → 104 not taken.
✓ Branch 9 → 10 taken 52872 times.
✗ Branch 9 → 104 not taken.
 52872 const std::string genericTypeName = type.getBase().getSubType();
144
2/4
✓ Branch 10 → 11 taken 52872 times.
✗ Branch 10 → 106 not taken.
✗ Branch 11 → 12 not taken.
✓ Branch 11 → 13 taken 52872 times.
 52872 assert(typeMapping.contains(genericTypeName));
145
1/2
✓ Branch 13 → 14 taken 52872 times.
✗ Branch 13 → 106 not taken.
 52872 const QualType &replacementType = typeMapping.at(genericTypeName);
146
1/2
✓ Branch 14 → 15 taken 52872 times.
✗ Branch 14 → 105 not taken.
 52872 type = type.replaceBaseType(replacementType);
147
4/6
✓ Branch 17 → 18 taken 23345 times.
✗ Branch 17 → 110 not taken.
✓ Branch 18 → 19 taken 23345 times.
✗ Branch 18 → 109 not taken.
✓ Branch 19 → 20 taken 53 times.
✓ Branch 19 → 42 taken 23292 times.
 76217 } else if (type.getBase().isOneOf({TY_FUNCTION, TY_PROCEDURE})) { // The base type is a function or procedure
148 // Substantiate each param or return type
149
2/4
✓ Branch 20 → 21 taken 53 times.
✗ Branch 20 → 115 not taken.
✓ Branch 21 → 22 taken 53 times.
✗ Branch 21 → 115 not taken.
 53 QualTypeList paramAndReturnTypes = type.getFunctionParamAndReturnTypes();
150
2/2
✓ Branch 38 → 24 taken 112 times.
✓ Branch 38 → 39 taken 53 times.
 218 for (QualType &paramOrReturnType : paramAndReturnTypes)
151
3/4
✓ Branch 26 → 27 taken 112 times.
✗ Branch 26 → 111 not taken.
✓ Branch 27 → 28 taken 60 times.
✓ Branch 27 → 29 taken 52 times.
 112 if (paramOrReturnType.hasAnyGenericParts())
152
1/2
✓ Branch 28 → 29 taken 60 times.
✗ Branch 28 → 111 not taken.
 60 substantiateTypeWithTypeMapping(paramOrReturnType, typeMapping, node);
153 // Attach the list of concrete param types to the symbol type
154
1/2
✓ Branch 39 → 40 taken 53 times.
✗ Branch 39 → 112 not taken.
 53 type = type.getWithFunctionParamAndReturnTypes(paramAndReturnTypes);
155 53 } else { // The base type is a struct or interface
156
3/6
✓ Branch 42 → 43 taken 23292 times.
✗ Branch 42 → 117 not taken.
✓ Branch 43 → 44 taken 23292 times.
✗ Branch 43 → 116 not taken.
✗ Branch 44 → 45 not taken.
✓ Branch 44 → 46 taken 23292 times.
 23292 assert(type.getBase().isOneOf({TY_STRUCT, TY_INTERFACE}));
157 // Substantiate each template type
158
1/2
✓ Branch 46 → 47 taken 23292 times.
✗ Branch 46 → 148 not taken.
 23292 const QualType baseType = type.getBase();
159
2/4
✓ Branch 47 → 48 taken 23292 times.
✗ Branch 47 → 148 not taken.
✓ Branch 48 → 49 taken 23292 times.
✗ Branch 48 → 148 not taken.
 23292 QualTypeList templateTypes = baseType.getTemplateTypes();
160
2/2
✓ Branch 65 → 51 taken 30115 times.
✓ Branch 65 → 66 taken 23292 times.
 76699 for (QualType &templateType : templateTypes)
161
3/4
✓ Branch 53 → 54 taken 30115 times.
✗ Branch 53 → 118 not taken.
✓ Branch 54 → 55 taken 28427 times.
✓ Branch 54 → 56 taken 1688 times.
 30115 if (templateType.hasAnyGenericParts())
162
1/2
✓ Branch 55 → 56 taken 28427 times.
✗ Branch 55 → 118 not taken.
 28427 substantiateTypeWithTypeMapping(templateType, typeMapping, node);
163 // Attach the list of concrete template types to the symbol type
164
1/2
✓ Branch 66 → 67 taken 23292 times.
✗ Branch 66 → 119 not taken.
 23292 type = type.getWithBaseTemplateTypes(templateTypes);
165 // Lookup the scope of the concrete struct or interface type
166 // Only do this, if the struct or interface is not self-referencing, because in that case we'd end up in an infinite recursion
167
3/4
✓ Branch 67 → 68 taken 23292 times.
✗ Branch 67 → 146 not taken.
✓ Branch 68 → 69 taken 22503 times.
✓ Branch 68 → 101 taken 789 times.
 23292 if (!baseType.isSelfReferencingStructType()) {
168
3/4
✓ Branch 69 → 70 taken 22503 times.
✗ Branch 69 → 146 not taken.
✓ Branch 70 → 71 taken 20821 times.
✓ Branch 70 → 86 taken 1682 times.
 22503 if (baseType.is(TY_STRUCT)) { // Struct
169
1/2
✓ Branch 71 → 72 taken 20821 times.
✗ Branch 71 → 146 not taken.
 20821 const Struct *spiceStruct = baseType.getStruct(node, templateTypes);
170
1/2
✗ Branch 72 → 73 not taken.
✓ Branch 72 → 84 taken 20821 times.
 20821 if (!spiceStruct) {
171 ✗ assert(node != nullptr);
172 ✗ const std::string signature = Struct::getSignature(baseType.getSubType(), templateTypes);
173 ✗ throw SemanticError(node, UNKNOWN_DATATYPE, "Could not find struct '" + signature + "'");
174 ✗ }
175
1/2
✓ Branch 84 → 85 taken 20821 times.
✗ Branch 84 → 132 not taken.
 20821 type = type.getWithBodyScope(spiceStruct->scope);
176 } else { // Interface
177
1/2
✓ Branch 86 → 87 taken 1682 times.
✗ Branch 86 → 146 not taken.
 1682 const Interface *spiceInterface = baseType.getInterface(node, templateTypes);
178
1/2
✗ Branch 87 → 88 not taken.
✓ Branch 87 → 99 taken 1682 times.
 1682 if (!spiceInterface) {
179 ✗ assert(node != nullptr);
180 ✗ const std::string signature = Interface::getSignature(baseType.getSubType(), templateTypes);
181 ✗ throw SemanticError(node, UNKNOWN_DATATYPE, "Could not find interface '" + signature + "'");
182 ✗ }
183
1/2
✓ Branch 99 → 100 taken 1682 times.
✗ Branch 99 → 145 not taken.
 1682 type = type.getWithBodyScope(spiceInterface->scope);
184 }
185 }
186 23292 }
187 76217 }
188
189 } // namespace spice::compiler
190