GCC Code Coverage Report

Directory: ../
Coverage: low: ≥ 0% medium: ≥ 75.0% high: ≥ 90.0%
Coverage Exec / Excl / Total
Lines: 100.0% 148 / 0 / 148
Functions: 100.0% 4 / 0 / 4
Branches: 65.5% 199 / 0 / 304
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
16 603 std::any TypeChecker::visitMainFctDefCheck(MainFctDefNode *node) {
17 // Skip if already type-checked
18
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 603 if (typeCheckedMainFct)
19
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 152 return nullptr;
20
21 527 node->resizeToNumberOfManifestations(1);
22
23 // Change to function body scope
24 527 currentScope = node->bodyScope;
25 // Visit statements in new scope
26
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 527 visit(node->body);
27 // Leave main function body scope
28 497 currentScope = rootScope;
29
30 // Set to type-checked
31 497 typeCheckedMainFct = true;
32
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 994 return nullptr;
33 }
34
35 46522 std::any TypeChecker::visitFctDefCheck(FctDefNode *node) {
36 46522 node->resizeToNumberOfManifestations(node->manifestations.size());
37 46522 manIdx = 0; // Reset the manifestation index
38
39 // Get all manifestations for this function definition
40
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 158390 for (Function *manifestation : node->manifestations) {
41 // Skip non-substantiated or already checked functions
42
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 65348 if (!manifestation->isFullySubstantiated() || manifestation->alreadyTypeChecked) {
43 42150 manIdx++; // Increase the manifestation index
44 42150 continue;
45 }
46
47 // Change scope to concrete struct specialization scope
48
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 23198 if (node->isMethod) {
49
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 13465 const std::string &scopeName = Struct::getScopeName(node->name->structName, manifestation->thisType.getTemplateTypes());
50
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 13465 changeToScope(scopeName, ScopeType::STRUCT);
51 13465 }
52
53 // Change to function scope
54
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 23198 changeToScope(manifestation->bodyScope, ScopeType::FUNC_PROC_BODY);
55
56 // Mount type mapping for this manifestation
57
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 23198 assert(typeMapping.empty());
58
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 23198 typeMapping = manifestation->typeMapping;
59
60 // Set return type to the result variable
61
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 69594 SymbolTableEntry *resultVarEntry = currentScope->lookupStrict(RETURN_VARIABLE_NAME);
62
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 23198 assert(resultVarEntry != nullptr);
63
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 23198 resultVarEntry->updateType(manifestation->returnType, false);
64 23198 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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 23198 if (node->hasParams) {
69
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 16498 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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 40508 for (size_t i = 0; i < manifestation->paramList.size(); i++) {
73
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 24010 const DeclStmtNode *param = node->paramLst->params.at(i);
74
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 24010 const QualType paramType = manifestation->getParamTypes().at(i);
75
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 24010 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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 23198 visit(node->body);
85
86 // Clear type mapping
87 23196 typeMapping.clear();
88
89 // Change to root scope
90 23196 currentScope = rootScope;
91
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 23196 assert(currentScope->type == ScopeType::GLOBAL);
92
93 // Do not type-check this manifestation again
94 23196 manifestation->alreadyTypeChecked = true;
95
96 23196 manIdx++; // Increase the manifestation index
97 }
98 46520 manIdx = 0; // Reset the manifestation index
99
100
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 93040 return nullptr;
101 }
102
103 27099 std::any TypeChecker::visitProcDefCheck(ProcDefNode *node) {
104 27099 node->resizeToNumberOfManifestations(node->manifestations.size());
105 27099 manIdx = 0; // Reset the manifestation index
106
107 // Get all manifestations for this procedure definition
108
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 96204 for (Function *manifestation : node->manifestations) {
109 // Skip non-substantiated or already checked procedures
110
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 42006 if (!manifestation->isFullySubstantiated() || manifestation->alreadyTypeChecked) {
111 28930 manIdx++; // Increase the manifestation index
112 28930 continue;
113 }
114
115 // Change scope to concrete struct specialization scope
116
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 13076 if (node->isMethod) {
117
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 11083 const std::string &scopeName = Struct::getScopeName(node->name->structName, manifestation->thisType.getTemplateTypes());
118
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 11083 changeToScope(scopeName, ScopeType::STRUCT);
119 11083 }
120
121 // Change to procedure scope
122
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 13076 changeToScope(manifestation->bodyScope, ScopeType::FUNC_PROC_BODY);
123
124 // Mount type mapping for this manifestation
125
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 13076 assert(typeMapping.empty());
126
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 13076 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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 13076 if (node->hasParams) {
131
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 9761 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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 23300 for (size_t i = 0; i < manifestation->paramList.size(); i++) {
135
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 13539 const DeclStmtNode *param = node->paramLst->params.at(i);
136
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 13539 const QualType paramType = manifestation->getParamTypes().at(i);
137
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 13539 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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 13076 if (node->isCtor)
147
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 6024 createCtorBodyPreamble(node->scope);
148
149 // Visit statements in new scope
150
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 13076 visit(node->body);
151
152 // Clear type mapping
153 13076 typeMapping.clear();
154
155 // Change to root scope
156 13076 currentScope = rootScope;
157
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 13076 assert(currentScope != nullptr && currentScope->type == ScopeType::GLOBAL);
158
159 // Do not type-check this manifestation again
160 13076 manifestation->alreadyTypeChecked = true;
161
162 13076 manIdx++; // Increase the manifestation index
163 }
164 27099 manIdx = 0; // Reset the manifestation index
165
166
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 54198 return nullptr;
167 }
168
169 6168 std::any TypeChecker::visitStructDefCheck(StructDefNode *node) {
170 6168 node->resizeToNumberOfManifestations(node->structManifestations.size());
171 6168 manIdx = 0; // Reset the manifestation index
172
173 // Get all manifestations for this procedure definition
174
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 23742 for (Struct *manifestation : node->structManifestations) {
175 // Skip non-substantiated or already checked procedures
176
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 11406 if (!manifestation->isFullySubstantiated()) {
177 1982 manIdx++; // Increase the manifestation index
178 1982 continue;
179 }
180
181 // Fallback for manifestations that could not be decided on when they were created, because a by-value struct field
182 // was not manifested yet at that point (circular import). By now the whole import graph is prepared, so the
183 // decision can be taken - late, but still before the struct's own default member bodies are prepared below.
184
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 9424 createImplicitDefaultMembers(*manifestation, node, /*withMoveCtor=*/false);
185
186 // Change to struct scope
187
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 9424 changeToScope(manifestation->scope, ScopeType::STRUCT);
188
189 // Mount type mapping for this manifestation, so that the body preamble helpers below can substantiate
190 // generic field types (e.g. `heap T*` on `Vector<T>`). Without this, an auto-generated body preamble that
191 // touches a still-generic field would assert in TypeMatcher::substantiateTypeWithTypeMapping.
192
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 9424 assert(typeMapping.empty());
193
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 9424 typeMapping = manifestation->typeMapping;
194
195 // Re-visit all default values. This is required, since the type of the default value might vary for different manifestations
196
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 38527 for (const FieldNode *field : node->fields) {
197
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 19679 if (field->defaultValue != nullptr) {
198
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 8724 visit(field->defaultValue);
199
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 8724 SymbolTableEntry *fieldEntry = manifestation->scope->lookupStrict(field->fieldName);
200
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 8724 assert(fieldEntry != nullptr);
201
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 8724 fieldEntry->updateState(INITIALIZED, field);
202 }
203 }
204
205 // Build struct type
206
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 9424 const QualType structType = manifestation->entry->getQualType();
207
208 // Check if the struct implements all methods of all attached interfaces
209 9424 size_t vtableIndex = 0;
210
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 21996 for (const QualType &interfaceType : manifestation->interfaceTypes) {
211
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 3148 const Interface *interface = interfaceType.getInterface(node);
212
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 3148 assert(interface != nullptr);
213
214 // Check for all methods, that it is implemented by the struct
215
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 15214 for (const Function *expMethod : interface->methods) {
216
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 8918 const std::string methodName = expMethod->name;
217
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 8918 QualTypeList params = expMethod->getParamTypes();
218 8918 QualType returnType = expMethod->returnType;
219
220 // Substantiate param and return types
221
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 8918 TypeMatcher::substantiateTypesWithTypeMapping(params, interface->typeMapping, node);
222
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 8918 if (returnType.hasAnyGenericParts())
223
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 4546 TypeMatcher::substantiateTypeWithTypeMapping(returnType, interface->typeMapping, node);
224
225 // Build args list
226 8918 ArgList args;
227
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 8918 args.reserve(params.size());
228
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 18916 for (const QualType &param : params)
229
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 1080 args.emplace_back(param, nullptr);
230
231 // Search for method that has the required signature
232
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 8918 Function *spiceFunction = FunctionManager::match(currentScope, methodName, structType, args, {}, true, node);
233
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 8918 if (spiceFunction == nullptr) {
234
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 4 softError(node, INTERFACE_METHOD_NOT_IMPLEMENTED,
235
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 8 "The struct '" + node->structName + "' does not implement method '" + expMethod->getSignature() + "'.");
236 4 continue;
237 }
238
239 // Check return type
240
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 10410 if (spiceFunction->returnType != returnType &&
241
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 1496 !returnType.matchesInterfaceImplementedByStruct(spiceFunction->returnType)) {
242
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 2 softError(node, INTERFACE_METHOD_NOT_IMPLEMENTED,
243
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 4 "The struct '" + node->structName + "' does not implement method '" + expMethod->getSignature() +
244
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 2 "'. The return type does not match.");
245 2 continue;
246 }
247 // Set to virtual, since it overrides the interface method
248 8912 spiceFunction->isVirtual = true;
249 8912 spiceFunction->vtableIndex = vtableIndex++;
250
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 26754 }
251 }
252
253 // Check default ctor body if required
254
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 28272 const Function *ctorFunc = FunctionManager::lookup(currentScope, CTOR_FUNCTION_NAME, structType, {}, true);
255
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 9424 if (ctorFunc != nullptr && ctorFunc->implicitDefault) {
256
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 243 createCtorBodyPreamble(ctorFunc->bodyScope);
257
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 243 assert(manifestation->areAllFieldsInitialized() == nullptr);
258 }
259
260 // Check default copy ctor body if required
261
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 28272 const ArgList args = {{structType.toConstRef(node), false /* always non-temporary */}};
262
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 9424 const Function *copyCtorFunc = FunctionManager::lookup(currentScope, CTOR_FUNCTION_NAME, structType, args, true);
263
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 9424 if (copyCtorFunc != nullptr && copyCtorFunc->implicitDefault) {
264
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 3465 createCopyCtorBodyPreamble(copyCtorFunc->bodyScope);
265
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 3465 assert(manifestation->areAllFieldsInitialized() == nullptr);
266 }
267
268 // Check default move ctor body if required. findMoveCtor scans the manifestations directly to avoid the
269 // constify-based false-positive that FunctionManager::lookup with a non-const ref arg can produce.
270
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 9424 if (const Function *moveCtorFunc = FunctionManager::findMoveCtor(currentScope);
271
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 392 moveCtorFunc && moveCtorFunc->implicitDefault) {
272
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 17 createMoveCtorBodyPreamble(moveCtorFunc->bodyScope);
273
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 17 assert(manifestation->areAllFieldsInitialized() == nullptr);
274 }
275
276 // Check default dtor body if required
277
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 28272 const Function *dtorFunc = FunctionManager::lookup(currentScope, DTOR_FUNCTION_NAME, structType, {}, true);
278
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 9424 if (dtorFunc != nullptr && dtorFunc->implicitDefault)
279
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 3708 createDtorBodyPreamble(dtorFunc->bodyScope, node);
280
281 // Reset field symbols to declared state for the next manifestation
282
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 9424 manifestation->resetFieldSymbolsToDeclared(node);
283
284 // Clear type mapping
285 9424 typeMapping.clear();
286
287 // Return to the root scope
288 9424 currentScope = rootScope;
289
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 9424 assert(currentScope != nullptr && currentScope->type == ScopeType::GLOBAL);
290
291 9424 manIdx++; // Increase the manifestation index
292 9424 }
293 6168 manIdx = 0; // Reset the manifestation index
294
295
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 12336 return nullptr;
296 }
297
298 } // namespace spice::compiler
299