GCC Code Coverage Report

Directory: ../
Coverage: low: ≥ 0% medium: ≥ 75.0% high: ≥ 90.0%
Coverage Exec / Excl / Total
Lines: 100.0% 146 / 0 / 146
Functions: 100.0% 4 / 0 / 4
Branches: 65.6% 198 / 0 / 302
src/typechecker/TypeCheckerTopLevelDefinitionsCheck.cpp
Line Branch Exec Source
1 // Copyright (c) 2021-2026 ChilliBits. All rights reserved.
2
3 #include "TypeChecker.h"
4
5 #include <SourceFile.h>
6 #include <ast/ASTNodes.h>
7 #include <exception/SemanticError.h>
8 #include <model/Interface.h>
9 #include <symboltablebuilder/Scope.h>
10 #include <symboltablebuilder/SymbolTableBuilder.h>
11 #include <typechecker/FunctionManager.h>
12 #include <typechecker/TypeMatcher.h>
13
14 namespace spice::compiler {
15
16 567 std::any TypeChecker::visitMainFctDefCheck(MainFctDefNode *node) {
17 // Skip if already type-checked
18
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 567 if (typeCheckedMainFct)
19
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 130 return nullptr;
20
21 502 node->resizeToNumberOfManifestations(1);
22
23 // Change to function body scope
24 502 currentScope = node->bodyScope;
25 // Visit statements in new scope
26
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 502 visit(node->body);
27 // Leave main function body scope
28 472 currentScope = rootScope;
29
30 // Set to type-checked
31 472 typeCheckedMainFct = true;
32
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 944 return nullptr;
33 }
34
35 41731 std::any TypeChecker::visitFctDefCheck(FctDefNode *node) {
36 41731 node->resizeToNumberOfManifestations(node->manifestations.size());
37 41731 manIdx = 0; // Reset the manifestation index
38
39 // Get all manifestations for this function definition
40
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 140520 for (Function *manifestation : node->manifestations) {
41 // Skip non-substantiated or already checked functions
42
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 57060 if (!manifestation->isFullySubstantiated() || manifestation->alreadyTypeChecked) {
43 34913 manIdx++; // Increase the manifestation index
44 34913 continue;
45 }
46
47 // Change scope to concrete struct specialization scope
48
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 22147 if (node->isMethod) {
49
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 13100 const std::string &scopeName = Struct::getScopeName(node->name->structName, manifestation->thisType.getTemplateTypes());
50
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 13100 changeToScope(scopeName, ScopeType::STRUCT);
51 13100 }
52
53 // Change to function scope
54
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 22147 changeToScope(manifestation->bodyScope, ScopeType::FUNC_PROC_BODY);
55
56 // Mount type mapping for this manifestation
57
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 22147 assert(typeMapping.empty());
58
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 22147 typeMapping = manifestation->typeMapping;
59
60 // Set return type to the result variable
61
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 66441 SymbolTableEntry *resultVarEntry = currentScope->lookupStrict(RETURN_VARIABLE_NAME);
62
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 22147 assert(resultVarEntry != nullptr);
63
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 22147 resultVarEntry->updateType(manifestation->returnType, false);
64 22147 resultVarEntry->used = true;
65
66 // Visit parameters
67 // This happens once in the type checker prepare stage. This second time is only required if we have a generic function
68
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 22147 if (node->hasParams) {
69
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 15439 visit(node->paramLst);
70 // Annotate function/procedure-typed params with lambda-capture info from the resolved manifestation type.
71 // This must happen in the TypeChecker so that the IRGenerator can treat SymbolTableEntry as immutable.
72
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 38080 for (size_t i = 0; i < manifestation->paramList.size(); i++) {
73
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 22641 const DeclStmtNode *param = node->paramLst->params.at(i);
74
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 22641 const QualType paramType = manifestation->getParamTypes().at(i);
75
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 22641 if (paramType.isOneOf({TY_FUNCTION, TY_PROCEDURE}) && paramType.hasLambdaCaptures()) {
76
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 2 SymbolTableEntry *paramSymbol = currentScope->lookupStrict(param->varName);
77
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 2 assert(paramSymbol != nullptr);
78
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 2 paramSymbol->updateType(paramSymbol->getQualType().getWithLambdaCaptures(), true);
79 }
80 }
81 }
82
83 // Visit statements in new scope
84
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 22147 visit(node->body);
85
86 // Clear type mapping
87 22145 typeMapping.clear();
88
89 // Change to root scope
90 22145 currentScope = rootScope;
91
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 22145 assert(currentScope->type == ScopeType::GLOBAL);
92
93 // Do not type-check this manifestation again
94 22145 manifestation->alreadyTypeChecked = true;
95
96 22145 manIdx++; // Increase the manifestation index
97 }
98 41729 manIdx = 0; // Reset the manifestation index
99
100
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 83458 return nullptr;
101 }
102
103 22544 std::any TypeChecker::visitProcDefCheck(ProcDefNode *node) {
104 22544 node->resizeToNumberOfManifestations(node->manifestations.size());
105 22544 manIdx = 0; // Reset the manifestation index
106
107 // Get all manifestations for this procedure definition
108
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 77475 for (Function *manifestation : node->manifestations) {
109 // Skip non-substantiated or already checked procedures
110
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 32387 if (!manifestation->isFullySubstantiated() || manifestation->alreadyTypeChecked) {
111 21240 manIdx++; // Increase the manifestation index
112 21240 continue;
113 }
114
115 // Change scope to concrete struct specialization scope
116
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 11147 if (node->isMethod) {
117
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 9450 const std::string &scopeName = Struct::getScopeName(node->name->structName, manifestation->thisType.getTemplateTypes());
118
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 9450 changeToScope(scopeName, ScopeType::STRUCT);
119 9450 }
120
121 // Change to procedure scope
122
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 11147 changeToScope(manifestation->bodyScope, ScopeType::FUNC_PROC_BODY);
123
124 // Mount type mapping for this manifestation
125
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 11147 assert(typeMapping.empty());
126
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 11147 typeMapping = manifestation->typeMapping;
127
128 // Visit parameters
129 // This happens once in the type checker prepare stage. This second time is only required if we have a generic procedure
130
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 11147 if (node->hasParams) {
131
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 8541 visit(node->paramLst);
132 // Annotate function/procedure-typed params with lambda-capture info from the resolved manifestation type.
133 // This must happen in the TypeChecker so that the IRGenerator can treat SymbolTableEntry as immutable.
134
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 20838 for (size_t i = 0; i < manifestation->paramList.size(); i++) {
135
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 12297 const DeclStmtNode *param = node->paramLst->params.at(i);
136
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 12297 const QualType paramType = manifestation->getParamTypes().at(i);
137
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 12297 if (paramType.isOneOf({TY_FUNCTION, TY_PROCEDURE}) && paramType.hasLambdaCaptures()) {
138
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 13 SymbolTableEntry *paramSymbol = currentScope->lookupStrict(param->varName);
139
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 13 assert(paramSymbol != nullptr);
140
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 13 paramSymbol->updateType(paramSymbol->getQualType().getWithLambdaCaptures(), true);
141 }
142 }
143 }
144
145 // Prepare generation of special ctor preamble to store VTable, default field values, etc. if required
146
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 11147 if (node->isCtor)
147
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 5278 createCtorBodyPreamble(node->scope);
148
149 // Visit statements in new scope
150
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 11147 visit(node->body);
151
152 // Clear type mapping
153 11147 typeMapping.clear();
154
155 // Change to root scope
156 11147 currentScope = rootScope;
157
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 11147 assert(currentScope != nullptr && currentScope->type == ScopeType::GLOBAL);
158
159 // Do not type-check this manifestation again
160 11147 manifestation->alreadyTypeChecked = true;
161
162 11147 manIdx++; // Increase the manifestation index
163 }
164 22544 manIdx = 0; // Reset the manifestation index
165
166
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 45088 return nullptr;
167 }
168
169 5283 std::any TypeChecker::visitStructDefCheck(StructDefNode *node) {
170 5283 node->resizeToNumberOfManifestations(node->structManifestations.size());
171 5283 manIdx = 0; // Reset the manifestation index
172
173 // Get all manifestations for this procedure definition
174
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 19797 for (const Struct *manifestation : node->structManifestations) {
175 // Skip non-substantiated or already checked procedures
176
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 9231 if (!manifestation->isFullySubstantiated()) {
177 1543 manIdx++; // Increase the manifestation index
178 1543 continue;
179 }
180
181 // Change to struct scope
182
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 7688 changeToScope(manifestation->scope, ScopeType::STRUCT);
183
184 // Mount type mapping for this manifestation, so that the body preamble helpers below can substantiate
185 // generic field types (e.g. `heap T*` on `Vector<T>`). Without this, an auto-generated body preamble that
186 // touches a still-generic field would assert in TypeMatcher::substantiateTypeWithTypeMapping.
187
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 7688 assert(typeMapping.empty());
188
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 7688 typeMapping = manifestation->typeMapping;
189
190 // Re-visit all default values. This is required, since the type of the default value might vary for different manifestations
191
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 31407 for (const FieldNode *field : node->fields) {
192
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 16031 if (field->defaultValue != nullptr) {
193
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 4020 visit(field->defaultValue);
194
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 4020 SymbolTableEntry *fieldEntry = manifestation->scope->lookupStrict(field->fieldName);
195
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 4020 assert(fieldEntry != nullptr);
196
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 4020 fieldEntry->updateState(INITIALIZED, field);
197 }
198 }
199
200 // Build struct type
201
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 7688 const QualType structType = manifestation->entry->getQualType();
202
203 // Check if the struct implements all methods of all attached interfaces
204 7688 size_t vtableIndex = 0;
205
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 17840 for (const QualType &interfaceType : manifestation->interfaceTypes) {
206
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 2464 const Interface *interface = interfaceType.getInterface(node);
207
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 2464 assert(interface != nullptr);
208
209 // Check for all methods, that it is implemented by the struct
210
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 11944 for (const Function *expMethod : interface->methods) {
211
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 7016 const std::string methodName = expMethod->name;
212
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 7016 QualTypeList params = expMethod->getParamTypes();
213 7016 QualType returnType = expMethod->returnType;
214
215 // Substantiate param and return types
216
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 7016 TypeMatcher::substantiateTypesWithTypeMapping(params, interface->typeMapping, node);
217
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 7016 if (returnType.hasAnyGenericParts())
218
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 3532 TypeMatcher::substantiateTypeWithTypeMapping(returnType, interface->typeMapping, node);
219
220 // Build args list
221 7016 ArgList args;
222
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 7016 args.reserve(params.size());
223
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 14948 for (const QualType &param : params)
224
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 916 args.emplace_back(param, nullptr);
225
226 // Search for method that has the required signature
227
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 7016 Function *spiceFunction = FunctionManager::match(currentScope, methodName, structType, args, {}, true, node);
228
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 7016 if (spiceFunction == nullptr) {
229
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 4 softError(node, INTERFACE_METHOD_NOT_IMPLEMENTED,
230
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 8 "The struct '" + node->structName + "' does not implement method '" + expMethod->getSignature() + "'.");
231 4 continue;
232 }
233
234 // Check return type
235
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 8170 if (spiceFunction->returnType != returnType &&
236
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 1158 !returnType.matchesInterfaceImplementedByStruct(spiceFunction->returnType)) {
237
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 2 softError(node, INTERFACE_METHOD_NOT_IMPLEMENTED,
238
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 4 "The struct '" + node->structName + "' does not implement method '" + expMethod->getSignature() +
239
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 2 "'. The return type does not match.");
240 2 continue;
241 }
242 // Set to virtual, since it overrides the interface method
243 7010 spiceFunction->isVirtual = true;
244 7010 spiceFunction->vtableIndex = vtableIndex++;
245
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 21048 }
246 }
247
248 // Check default ctor body if required
249
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 23064 const Function *ctorFunc = FunctionManager::lookup(currentScope, CTOR_FUNCTION_NAME, structType, {}, true);
250
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 7688 if (ctorFunc != nullptr && ctorFunc->implicitDefault) {
251
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 325 createCtorBodyPreamble(ctorFunc->bodyScope);
252
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 325 assert(manifestation->areAllFieldsInitialized() == nullptr);
253 }
254
255 // Check default copy ctor body if required
256
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 23064 const ArgList args = {{structType.toConstRef(node), false /* always non-temporary */}};
257
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 7688 const Function *copyCtorFunc = FunctionManager::lookup(currentScope, CTOR_FUNCTION_NAME, structType, args, true);
258
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 7688 if (copyCtorFunc != nullptr && copyCtorFunc->implicitDefault) {
259
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 2790 createCopyCtorBodyPreamble(copyCtorFunc->bodyScope);
260
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 2790 assert(manifestation->areAllFieldsInitialized() == nullptr);
261 }
262
263 // Check default move ctor body if required. findMoveCtor scans the manifestations directly to avoid the
264 // constify-based false-positive that FunctionManager::lookup with a non-const ref arg can produce.
265
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 7688 if (const Function *moveCtorFunc = FunctionManager::findMoveCtor(currentScope); moveCtorFunc && moveCtorFunc->implicitDefault) {
266
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 17 createMoveCtorBodyPreamble(moveCtorFunc->bodyScope);
267
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 17 assert(manifestation->areAllFieldsInitialized() == nullptr);
268 }
269
270 // Check default dtor body if required
271
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 23064 const Function *dtorFunc = FunctionManager::lookup(currentScope, DTOR_FUNCTION_NAME, structType, {}, true);
272
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 7688 if (dtorFunc != nullptr && dtorFunc->implicitDefault)
273
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 3315 createDtorBodyPreamble(dtorFunc->bodyScope);
274
275 // Reset field symbols to declared state for the next manifestation
276
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 7688 manifestation->resetFieldSymbolsToDeclared(node);
277
278 // Clear type mapping
279 7688 typeMapping.clear();
280
281 // Return to the root scope
282 7688 currentScope = rootScope;
283
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 7688 assert(currentScope != nullptr && currentScope->type == ScopeType::GLOBAL);
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285 7688 manIdx++; // Increase the manifestation index
286 7688 }
287 5283 manIdx = 0; // Reset the manifestation index
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 10566 return nullptr;
290 }
291
292 } // namespace spice::compiler
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