GCC Code Coverage Report

Directory: ../
Coverage: low: ≥ 0% medium: ≥ 75.0% high: ≥ 90.0%
Coverage Exec / Excl / Total
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Functions: 100.0% 11 / 0 / 11
Branches: 67.2% 137 / 0 / 204
src/typechecker/TypeChecker.cpp
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1 // Copyright (c) 2021-2026 ChilliBits. All rights reserved.
2
3 #include "TypeChecker.h"
4
5 #include <SourceFile.h>
6 #include <ast/Attributes.h>
7 #include <global/GlobalResourceManager.h>
8 #include <symboltablebuilder/Scope.h>
9 #include <symboltablebuilder/SymbolTableBuilder.h>
10 #include <typechecker/FunctionManager.h>
11
12 namespace spice::compiler {
13
14 3636 TypeChecker::TypeChecker(GlobalResourceManager &resourceManager, SourceFile *sourceFile, TypeCheckerMode typeCheckerMode)
15
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 3636 : CompilerPass(resourceManager, sourceFile), typeCheckerMode(typeCheckerMode), warnings(sourceFile->compilerOutput.warnings) {
16 3636 }
17
18 2870 std::any TypeChecker::visitEntry(EntryNode *node) {
19 // Initialize
20 2870 currentScope = rootScope;
21
22 // Initialize AST nodes with size of 1
23 2870 const bool isPrepare = typeCheckerMode == TC_MODE_PRE;
24
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 2870 if (isPrepare)
25 1207 node->resizeToNumberOfManifestations(1);
26
27 // Visit children
28
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 2870 visitChildren(node);
29
30 // Check which implicit structures we need for each struct, defined in this source file
31
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 2824 if (isPrepare) {
32
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 1193 const std::vector<const Struct *> manifestations = rootScope->getAllStructManifestationsInDeclarationOrder();
33
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 1925 for (const Struct *manifestation : manifestations) {
34 // Check if we need to create a default ctor, copy ctor or dtor
35
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 732 createDefaultCtorIfRequired(*manifestation, manifestation->scope);
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 732 createDefaultCopyCtorIfRequired(*manifestation, manifestation->scope);
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 732 createDefaultDtorIfRequired(*manifestation, manifestation->scope);
38 }
39 1193 }
40
41
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 2824 return nullptr;
42 }
43
44 /**
45 * Check if the capture rules for async lambdas are enforced if the async attribute is set
46 *
47 * Only one capture with pointer type, pass-by-val is allowed, since only then we can store it in the second field of the
48 * fat pointer and can ensure, that no stack variable is referenced inside the lambda.
49 *
50 * @param node Lambda base node
51 * @param attrs Lambda attributes
52 * @return False if the rules are violated, true otherwise
53 */
54 45 bool TypeChecker::checkAsyncLambdaCaptureRules(const LambdaBaseNode *node, const LambdaAttrNode *attrs) const {
55 // If the async attribute is not set, we can return early
56
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 109 if (!attrs || !attrs->attrLst->hasAttr(ATTR_ASYNC) || !attrs->attrLst->getAttrValueByName(ATTR_ASYNC)->boolValue)
57 29 return true; // Not violated
58
59 // If we don't have any captures, we can return early
60 16 const CaptureMap &captures = node->bodyScope->symbolTable.captures;
61
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 16 if (captures.empty())
62 10 return true; // Not violated
63
64 // Check for the capture rules
65 6 if (const Capture &capture = captures.begin()->second;
66
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 6 captures.size() > 1 || !capture.capturedSymbol->getQualType().isPtr() || capture.getMode() != BY_VALUE) {
67 5 const auto warningMessage =
68 "Async lambdas can only capture one pointer by value without storing captures in the caller stack frame, which can lead "
69 "to bugs due to references, outliving the validity scope of the referenced variable.";
70
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 5 const CompilerWarning warning(node->codeLoc, ASYNC_LAMBDA_CAPTURE_RULE_VIOLATION, warningMessage);
71
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 5 currentScope->sourceFile->compilerOutput.warnings.push_back(warning);
72 5 }
73
74 6 return false; // Violated
75 }
76
77 26 Function *TypeChecker::matchCopyCtor(const QualType &thisType, const ASTNode *node) const {
78
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 26 Scope *matchScope = thisType.getBodyScope();
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 26 assert(matchScope != nullptr);
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 52 const ArgList args = {{thisType.toConstRef(node), false}};
81
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 104 return FunctionManager::match(matchScope, CTOR_FUNCTION_NAME, thisType, args, {}, true, node);
82 26 }
83
84 148839 QualType TypeChecker::mapLocalTypeToImportedScopeType(const Scope *targetScope, const QualType &symbolType) const {
85 // Skip all types, except structs
86
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 148839 if (!symbolType.isBase(TY_STRUCT))
87 135756 return symbolType;
88
89 // If the target scope is in the current source file, we can return the symbol type as is
90 13083 SourceFile *targetSourceFile = targetScope->sourceFile;
91
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 13083 if (targetSourceFile == sourceFile)
92 5953 return symbolType;
93
94 // Match the scope of the symbol type against all scopes in the name registry of the target file
95
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 160598 for (const NameRegistryEntry &entry : targetSourceFile->exportedNameRegistry | std::views::values)
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 160277 if (entry.targetEntry != nullptr && entry.targetEntry->getQualType().isBase(TY_STRUCT))
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 46366 for (const Struct *manifestation : *entry.targetEntry->declNode->getStructManifestations())
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 34883 if (manifestation->scope == symbolType.getBase().getBodyScope())
99 6809 return symbolType;
100
101 // The target file does not know about the struct at all
102 // -> show it how to find the struct
103
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 321 const std::string structName = symbolType.getBase().getSubType();
104
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 321 const NameRegistryEntry *origRegistryEntry = sourceFile->getNameRegistryEntry(structName);
105
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 321 assert(origRegistryEntry != nullptr);
106 321 const uint64_t targetTypeId = origRegistryEntry->typeId;
107 321 SymbolTableEntry *targetEntry = origRegistryEntry->targetEntry;
108
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 321 targetSourceFile->addNameRegistryEntry(structName, targetTypeId, targetEntry, origRegistryEntry->targetScope, false);
109
110 321 return symbolType;
111 321 }
112
113 4644 QualType TypeChecker::mapImportedScopeTypeToLocalType(const Scope *sourceScope, const QualType &symbolType) const {
114 // Skip all types, except structs
115
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 4644 if (!symbolType.isBase(TY_STRUCT))
116 582 return symbolType;
117
118 // If the given source file is in the current one, we can return the symbol type as is
119 4062 const SourceFile *sourceSourceFile = sourceScope->sourceFile;
120
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 4062 if (sourceSourceFile == sourceFile)
121 1364 return symbolType;
122
123 // Match the scope of the symbol type against all scopes in the name registry of this source file
124
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 2698 const QualType baseType = symbolType.getBase();
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 107614 for (const auto &entry : sourceFile->exportedNameRegistry | std::views::values)
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 107552 if (entry.targetEntry != nullptr && entry.targetEntry->getQualType().isBase(TY_STRUCT))
127
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 18724 for (const Struct *manifestation : *entry.targetEntry->declNode->getStructManifestations())
128
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 13491 if (manifestation->scope == baseType.getBodyScope())
129 2636 return symbolType;
130
131 // This source file does not know about the struct at all
132 // -> show it how to find the struct
133
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 62 const NameRegistryEntry *origRegistryEntry = sourceSourceFile->getNameRegistryEntry(baseType.getSubType());
134
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 62 assert(origRegistryEntry != nullptr);
135 62 const uint64_t typeId = origRegistryEntry->typeId;
136 62 SymbolTableEntry *targetEntry = origRegistryEntry->targetEntry;
137
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 62 sourceFile->addNameRegistryEntry(baseType.getSubType(), typeId, targetEntry, origRegistryEntry->targetScope, false);
138
139 62 return symbolType;
140 }
141
142 /**
143 * Returns the operator function list for the current manifestation and the given node
144 *
145 * @param node Node to retrieve the op fct pointer list from
146 * @return Op fct pointer list
147 */
148 913 std::vector<const Function *> &TypeChecker::getOpFctPointers(ASTNode *node) const {
149
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 913 assert(node->getOpFctPointers()->size() > manIdx);
150 913 return node->getOpFctPointers()->at(manIdx);
151 }
152
153 /**
154 * Check if a function has been type-checked already. If not, request a revisit
155 *
156 * @param fct Function to check
157 */
158 27976 void TypeChecker::requestRevisitIfRequired(const Function *fct) {
159
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 27976 if (fct && !fct->alreadyTypeChecked)
160 16581 fct->entry->scope->sourceFile->reVisitRequested = true;
161 27976 }
162
163 /**
164 * Check type name against well-known type names that require a runtime import. If found one, auto-import the runtime module.
165 *
166 * @param typeName Given type name
167 */
168 36590 void TypeChecker::ensureLoadedRuntimeForTypeName(const std::string &typeName) const {
169
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 141491 for (const auto &[wellKnownTypeName, runtimeModule] : TYPE_NAME_TO_RT_MODULE_MAPPING) {
170
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 107469 if (typeName == wellKnownTypeName && !sourceFile->isRT(runtimeModule)) {
171
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 2568 sourceFile->requestRuntimeModule(runtimeModule);
172 2568 break;
173 }
174 }
175 36590 }
176
177 /**
178 * Check type name against well-known function names that require a runtime import. If found one, auto-import the runtime module.
179 *
180 * @param functionName Given function name
181 */
182 11102 void TypeChecker::ensureLoadedRuntimeForFunctionName(const std::string &functionName) const {
183
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 180349 for (const auto &[wellKnownFunctionName, runtimeModule] : FCT_NAME_TO_RT_MODULE_MAPPING) {
184
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 169852 if (functionName == wellKnownFunctionName && !sourceFile->isRT(runtimeModule)) {
185
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 605 sourceFile->requestRuntimeModule(runtimeModule);
186 605 break;
187 }
188 }
189 11102 }
190
191 /**
192 * Add a soft error to the error list
193 */
194 25 void TypeChecker::softError(const ASTNode *node, const SemanticErrorType errorType, const std::string &message) const {
195 25 resourceManager.errorManager.addSoftError(node, errorType, message);
196 25 }
197
198 } // namespace spice::compiler
199