GCC Code Coverage Report

Directory: ../
Coverage: low: ≥ 0% medium: ≥ 75.0% high: ≥ 90.0%
Coverage Exec / Excl / Total
Lines: 100.0% 170 / 0 / 170
Functions: 100.0% 5 / 0 / 5
Branches: 65.3% 218 / 0 / 334
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 <model/Union.h>
10 #include <symboltablebuilder/Scope.h>
11 #include <symboltablebuilder/SymbolTableBuilder.h>
12 #include <typechecker/FunctionManager.h>
13 #include <typechecker/TypeMatcher.h>
14
15 namespace spice::compiler {
16
17 1329 std::any TypeChecker::visitMainFctDefCheck(MainFctDefNode *node) {
18 // Skip if already type-checked
19
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 1329 if (typeCheckedMainFct)
20
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 322 return nullptr;
21
22 1168 node->resizeToNumberOfManifestations(1);
23
24 // Change to function body scope
25 1168 currentScope = node->bodyScope;
26 // Visit statements in new scope
27
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 1168 visit(node->body);
28 // Leave main function body scope
29 1108 currentScope = rootScope;
30
31 // Set to type-checked
32 1108 typeCheckedMainFct = true;
33
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 2216 return nullptr;
34 }
35
36 105748 std::any TypeChecker::visitFctDefCheck(FctDefNode *node) {
37 105748 node->resizeToNumberOfManifestations(node->manifestations.size());
38 105748 manIdx = 0; // Reset the manifestation index
39
40 // Get all manifestations for this function definition
41
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 351621 for (Function *manifestation : node->manifestations) {
42 // Skip non-substantiated or already checked functions
43
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 140129 if (!manifestation->isFullySubstantiated() || manifestation->alreadyTypeChecked) {
44 87606 manIdx++; // Increase the manifestation index
45 87606 continue;
46 }
47
48 // Change scope to concrete struct specialization scope
49
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 52523 if (node->isMethod) {
50
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 30212 const std::string &scopeName = Struct::getScopeName(node->name->structName, manifestation->thisType.getTemplateTypes());
51
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 30212 changeToScope(scopeName, ScopeType::STRUCT);
52 30212 }
53
54 // Change to function scope
55
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 52523 changeToScope(manifestation->bodyScope, ScopeType::FUNC_PROC_BODY);
56
57 // Mount type mapping for this manifestation
58
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 52523 assert(typeMapping.empty());
59
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 52523 typeMapping = manifestation->typeMapping;
60
61 // Set return type to the result variable
62
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 157569 SymbolTableEntry *resultVarEntry = currentScope->lookupStrict(RETURN_VARIABLE_NAME);
63
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 52523 assert(resultVarEntry != nullptr);
64
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 52523 resultVarEntry->updateType(manifestation->returnType, false);
65 52523 resultVarEntry->used = true;
66
67 // Visit parameters
68 // This happens once in the type checker prepare stage. This second time is only required if we have a generic function
69
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 52523 if (node->hasParams) {
70
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 36906 visit(node->paramLst);
71 // Annotate function/procedure-typed params with lambda-capture info from the resolved manifestation type.
72 // This must happen in the TypeChecker so that the IRGenerator can treat SymbolTableEntry as immutable.
73
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 90593 for (size_t i = 0; i < manifestation->paramList.size(); i++) {
74
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 53687 const DeclStmtNode *param = node->paramLst->params.at(i);
75
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 53687 const QualType paramType = manifestation->getParamTypes().at(i);
76
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 53687 if (paramType.isOneOf({TY_FUNCTION, TY_PROCEDURE}) && paramType.hasLambdaCaptures()) {
77
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 6 SymbolTableEntry *paramSymbol = currentScope->lookupStrict(param->varName);
78
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 6 assert(paramSymbol != nullptr);
79
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 6 paramSymbol->updateType(paramSymbol->getQualType().getWithLambdaCaptures(), true);
80 }
81 }
82 }
83
84 // Visit statements in new scope
85
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 52523 visit(node->body);
86
87 // Clear type mapping
88 52519 typeMapping.clear();
89
90 // Change to root scope
91 52519 currentScope = rootScope;
92
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 52519 assert(currentScope->type == ScopeType::GLOBAL);
93
94 // Do not type-check this manifestation again
95 52519 manifestation->alreadyTypeChecked = true;
96
97 52519 manIdx++; // Increase the manifestation index
98 }
99 105744 manIdx = 0; // Reset the manifestation index
100
101
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 211488 return nullptr;
102 }
103
104 65651 std::any TypeChecker::visitProcDefCheck(ProcDefNode *node) {
105 65651 node->resizeToNumberOfManifestations(node->manifestations.size());
106 65651 manIdx = 0; // Reset the manifestation index
107
108 // Get all manifestations for this procedure definition
109
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 224693 for (Function *manifestation : node->manifestations) {
110 // Skip non-substantiated or already checked procedures
111
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 93391 if (!manifestation->isFullySubstantiated() || manifestation->alreadyTypeChecked) {
112 61245 manIdx++; // Increase the manifestation index
113 61245 continue;
114 }
115
116 // Change scope to concrete struct specialization scope
117
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 32146 if (node->isMethod) {
118
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 26550 const std::string &scopeName = Struct::getScopeName(node->name->structName, manifestation->thisType.getTemplateTypes());
119
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 26550 changeToScope(scopeName, ScopeType::STRUCT);
120 26550 }
121
122 // Change to procedure scope
123
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 32146 changeToScope(manifestation->bodyScope, ScopeType::FUNC_PROC_BODY);
124
125 // Mount type mapping for this manifestation
126
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 32146 assert(typeMapping.empty());
127
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 32146 typeMapping = manifestation->typeMapping;
128
129 // Visit parameters
130 // This happens once in the type checker prepare stage. This second time is only required if we have a generic procedure
131
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 32146 if (node->hasParams) {
132
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 23550 visit(node->paramLst);
133 // Annotate function/procedure-typed params with lambda-capture info from the resolved manifestation type.
134 // This must happen in the TypeChecker so that the IRGenerator can treat SymbolTableEntry as immutable.
135
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 60876 for (size_t i = 0; i < manifestation->paramList.size(); i++) {
136
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 37326 const DeclStmtNode *param = node->paramLst->params.at(i);
137
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 37326 const QualType paramType = manifestation->getParamTypes().at(i);
138
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 37326 if (paramType.isOneOf({TY_FUNCTION, TY_PROCEDURE}) && paramType.hasLambdaCaptures()) {
139
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 32 SymbolTableEntry *paramSymbol = currentScope->lookupStrict(param->varName);
140
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 32 assert(paramSymbol != nullptr);
141
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 32 paramSymbol->updateType(paramSymbol->getQualType().getWithLambdaCaptures(), true);
142 }
143 }
144 }
145
146 // Prepare generation of special ctor preamble to store VTable, default field values, etc. if required
147
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 32146 if (node->isCtor)
148
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 12862 createCtorBodyPreamble(manifestation->bodyScope);
149
150 // Visit statements in new scope
151
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 32146 visit(node->body);
152
153 // Clear type mapping
154 32146 typeMapping.clear();
155
156 // Change to root scope
157 32146 currentScope = rootScope;
158
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 32146 assert(currentScope != nullptr && currentScope->type == ScopeType::GLOBAL);
159
160 // Do not type-check this manifestation again
161 32146 manifestation->alreadyTypeChecked = true;
162
163 32146 manIdx++; // Increase the manifestation index
164 }
165 65651 manIdx = 0; // Reset the manifestation index
166
167
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 131302 return nullptr;
168 }
169
170 14774 std::any TypeChecker::visitStructDefCheck(StructDefNode *node) {
171 14774 node->resizeToNumberOfManifestations(node->structManifestations.size());
172 14774 manIdx = 0; // Reset the manifestation index
173
174 // Get all manifestations for this procedure definition
175
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 53692 for (Struct *manifestation : node->structManifestations) {
176 // Skip non-substantiated or already checked procedures
177
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 24144 if (!manifestation->isFullySubstantiated()) {
178 3828 manIdx++; // Increase the manifestation index
179 3828 continue;
180 }
181
182 // Fallback for manifestations that could not be decided on when they were created, because a by-value struct field
183 // was not manifested yet at that point (circular import). By now the whole import graph is prepared, so the
184 // decision can be taken - late, but still before the struct's own default member bodies are prepared below.
185
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 20316 createImplicitDefaultMembers(*manifestation, node, /*withMoveCtor=*/false);
186
187 // Change to struct scope
188
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 20316 changeToScope(manifestation->scope, ScopeType::STRUCT);
189
190 // Mount type mapping for this manifestation, so that the body preamble helpers below can substantiate
191 // generic field types (e.g. `heap T*` on `Vector<T>`). Without this, an auto-generated body preamble that
192 // touches a still-generic field would assert in TypeMatcher::substantiateTypeWithTypeMapping.
193
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 20316 assert(typeMapping.empty());
194
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 20316 typeMapping = manifestation->typeMapping;
195
196 // Re-visit all default values. This is required, since the type of the default value might vary for different manifestations
197
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 84974 for (const FieldNode *field : node->fields) {
198
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 44342 if (field->defaultValue != nullptr) {
199
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 15005 visit(field->defaultValue);
200
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 15005 SymbolTableEntry *fieldEntry = manifestation->scope->lookupStrict(field->fieldName);
201
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 15005 assert(fieldEntry != nullptr);
202
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 15005 fieldEntry->updateState(INITIALIZED, field);
203 }
204 }
205
206 // Build struct type
207
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 20316 const QualType structType = manifestation->entry->getQualType();
208
209 // Check if the struct implements all methods of all attached interfaces
210 20316 size_t vtableIndex = 0;
211
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 45448 for (const QualType &interfaceType : manifestation->interfaceTypes) {
212
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 4816 const Interface *interface = interfaceType.getInterface(node);
213
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 4816 assert(interface != nullptr);
214
215 // Check for all methods, that it is implemented by the struct
216
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 23752 for (const Function *expMethod : interface->methods) {
217
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 14120 const std::string methodName = expMethod->name;
218
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 14120 QualTypeList params = expMethod->getParamTypes();
219 14120 QualType returnType = expMethod->returnType;
220
221 // Substantiate param and return types
222
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 14120 TypeMatcher::substantiateTypesWithTypeMapping(params, interface->typeMapping, node);
223
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 14120 if (returnType.hasAnyGenericParts())
224
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 6848 TypeMatcher::substantiateTypeWithTypeMapping(returnType, interface->typeMapping, node);
225
226 // Build args list
227 14120 ArgList args;
228
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 14120 args.reserve(params.size());
229
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 30400 for (const QualType &param : params)
230
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 2160 args.emplace_back(param, nullptr);
231
232 // Search for method that has the required signature
233
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 14120 Function *spiceFunction = FunctionManager::match(currentScope, methodName, structType, args, {}, true, node);
234
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 14120 if (spiceFunction == nullptr) {
235
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 8 softError(node, INTERFACE_METHOD_NOT_IMPLEMENTED,
236
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 16 "The struct '" + node->structName + "' does not implement method '" + expMethod->getSignature() + "'.");
237 8 continue;
238 }
239
240 // Check return type
241
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 16356 if (spiceFunction->returnType != returnType &&
242
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 2244 !returnType.matchesInterfaceImplementedByStruct(spiceFunction->returnType)) {
243
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 4 softError(node, INTERFACE_METHOD_NOT_IMPLEMENTED,
244
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 8 "The struct '" + node->structName + "' does not implement method '" + expMethod->getSignature() +
245
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 4 "'. The return type does not match.");
246 4 continue;
247 }
248 // Set to virtual, since it overrides the interface method
249 14108 spiceFunction->isVirtual = true;
250 14108 spiceFunction->vtableIndex = vtableIndex++;
251
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 42360 }
252 }
253
254 // Check default ctor body if required
255
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 60948 const Function *ctorFunc = FunctionManager::lookup(currentScope, CTOR_FUNCTION_NAME, structType, {}, true);
256
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 20316 if (ctorFunc != nullptr && ctorFunc->implicitDefault) {
257
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 586 createCtorBodyPreamble(ctorFunc->bodyScope);
258
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 586 assert(manifestation->areAllFieldsInitialized() == nullptr);
259 }
260
261 // Check default copy ctor body if required
262
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 60948 const ArgList args = {{structType.toConstRef(node), false /* always non-temporary */}};
263
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 20316 const Function *copyCtorFunc = FunctionManager::lookup(currentScope, CTOR_FUNCTION_NAME, structType, args, true);
264
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 20316 if (copyCtorFunc != nullptr && copyCtorFunc->implicitDefault) {
265
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 7390 createCopyCtorBodyPreamble(copyCtorFunc->bodyScope);
266
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 7390 assert(manifestation->areAllFieldsInitialized() == nullptr);
267 }
268
269 // Check default move ctor body if required. findMoveCtor scans the manifestations directly to avoid the
270 // constify-based false-positive that FunctionManager::lookup with a non-const ref arg can produce.
271
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 20316 if (const Function *moveCtorFunc = FunctionManager::findMoveCtor(currentScope);
272
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 231 moveCtorFunc && moveCtorFunc->implicitDefault) {
273
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 34 createMoveCtorBodyPreamble(moveCtorFunc->bodyScope);
274
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 34 assert(manifestation->areAllFieldsInitialized() == nullptr);
275 }
276
277 // Check default dtor body if required
278
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 60948 const Function *dtorFunc = FunctionManager::lookup(currentScope, DTOR_FUNCTION_NAME, structType, {}, true);
279
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 20316 if (dtorFunc != nullptr && dtorFunc->implicitDefault)
280
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 7247 createDtorBodyPreamble(dtorFunc->bodyScope, node);
281
282 // Reset field symbols to declared state for the next manifestation
283
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 20316 manifestation->resetFieldSymbolsToDeclared(node);
284
285 // Clear type mapping
286 20316 typeMapping.clear();
287
288 // Return to the root scope
289 20316 currentScope = rootScope;
290
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 20316 assert(currentScope != nullptr && currentScope->type == ScopeType::GLOBAL);
291
292 20316 manIdx++; // Increase the manifestation index
293 20316 }
294 14774 manIdx = 0; // Reset the manifestation index
295
296
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 29548 return nullptr;
297 }
298
299 90 std::any TypeChecker::visitUnionDefCheck(UnionDefNode *node) {
300 90 node->resizeToNumberOfManifestations(node->unionManifestations.size());
301 90 manIdx = 0; // Reset the manifestation index
302
303 // Get all manifestations for this union definition
304
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 270 for (Union *manifestation : node->unionManifestations) {
305 // Skip non-substantiated manifestations
306
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 90 if (!manifestation->isFullySubstantiated()) {
307 4 manIdx++; // Increase the manifestation index
308 4 continue;
309 }
310
311 // Change to union scope
312
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 86 changeToScope(manifestation->scope, ScopeType::UNION);
313
314 // Mount type mapping for this manifestation, so that the default value below can substantiate generic field types
315
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 86 assert(typeMapping.empty());
316
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 86 typeMapping = manifestation->typeMapping;
317
318 // Re-visit the default value (at most one field may have one). This is required, since the type of the default
319 // value might vary for different manifestations
320
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 704 for (const FieldNode *field : node->fields) {
321
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 532 if (field->defaultValue != nullptr) {
322
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 8 visit(field->defaultValue);
323
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 8 SymbolTableEntry *fieldEntry = manifestation->scope->lookupStrict(field->fieldName);
324
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 8 assert(fieldEntry != nullptr);
325
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 8 fieldEntry->updateState(INITIALIZED, field);
326 }
327 }
328
329 // Clear type mapping
330 86 typeMapping.clear();
331
332 // Return to the root scope
333 86 currentScope = rootScope;
334
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 86 assert(currentScope != nullptr && currentScope->type == ScopeType::GLOBAL);
335
336 86 manIdx++; // Increase the manifestation index
337 }
338 90 manIdx = 0; // Reset the manifestation index
339
340
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 180 return nullptr;
341 }
342
343 } // namespace spice::compiler
344