GCC Code Coverage Report

Directory: ../
Coverage: low: ≥ 0% medium: ≥ 75.0% high: ≥ 90.0%
Coverage Exec / Excl / Total
Lines: 94.7% 90 / 0 / 95
Functions: 100.0% 7 / 0 / 7
Branches: 60.7% 176 / 0 / 290
src/typechecker/TypeCheckerStatements.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/ASTNodes.h>
7 #include <global/GlobalResourceManager.h>
8 #include <symboltablebuilder/Scope.h>
9 #include <symboltablebuilder/SymbolTableBuilder.h>
10 #include <typechecker/FunctionManager.h>
11 #include <typechecker/MacroDefs.h>
12
13 namespace spice::compiler {
14
15 22252 std::any TypeChecker::visitStmtLst(StmtLstNode *node) {
16 // Visit nodes in this scope
17
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 65298 for (StmtNode *stmt : node->statements) {
18
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 43079 if (!stmt)
19 ✗ continue;
20 // Print warning if statement is unreachable
21
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 43079 if (stmt->unreachable) {
22
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 3 warnings.emplace_back(stmt->codeLoc, UNREACHABLE_CODE, "This statement is unreachable");
23 3 continue;
24 }
25 // Visit the statement
26
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 43076 visit(stmt);
27 }
28
29 // Do cleanup of this scope, e.g. dtor calls for struct instances
30 22219 doScopeCleanup(node);
31
32
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 22219 return nullptr;
33 }
34
35 39169 std::any TypeChecker::visitDeclStmt(DeclStmtNode *node) {
36 // Retrieve entry of the lhs variable
37
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 39169 SymbolTableEntry *localVarEntry = currentScope->lookupStrict(node->varName);
38
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 39169 assert(localVarEntry != nullptr);
39
40 39169 QualType localVarType;
41
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 39169 if (node->hasAssignment) {
42 // Visit the right side
43
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 10944 auto rhs = std::any_cast<ExprResult>(visit(node->assignExpr));
44 10939 auto [rhsTy, rhsEntry] = rhs;
45
46 // Visit data type
47
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 10939 localVarType = std::any_cast<QualType>(visit(node->dataType));
48
49 // Check if type has to be inferred or both types are fixed
50
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 10936 if (!localVarType.is(TY_UNRESOLVED) && !rhsTy.is(TY_UNRESOLVED)) {
51 10911 const ExprResult lhsResult = {localVarType, localVarEntry};
52
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 10911 const auto [type, copyCtor] = opRuleManager.getAssignResultType(node, lhsResult, rhs, true);
53 10901 localVarType = type;
54 10901 node->calledCopyCtor = copyCtor;
55
56 // If this is a struct type, check if the type is known. If not, error out
57
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 10901 if (localVarType.isBase(TY_STRUCT) && !sourceFile->getNameRegistryEntry(localVarType.getBase().getSubType())) {
58 ✗ const std::string structName = localVarType.getBase().getSubType();
59 ✗ softError(node->dataType, UNKNOWN_DATATYPE, "Unknown struct type '" + structName + "'. Forgot to import?");
60 ✗ localVarType = QualType(TY_UNRESOLVED);
61 ✗ }
62 } else {
63
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 25 localVarType = QualType(TY_UNRESOLVED);
64 }
65
66 // If there is an anonymous entry attached (e.g. for struct instantiation) and we take over ownership, delete it
67
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 10926 if (!localVarType.isRef() && rhsEntry != nullptr && rhsEntry->anonymous)
68
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 865 currentScope->symbolTable.deleteAnonymous(rhsEntry->name);
69 } else {
70 // Visit data type
71
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 28225 localVarType = std::any_cast<QualType>(visit(node->dataType));
72
73 // References with no initialization are illegal
74
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 28225 if (localVarType.isRef() && !node->isFctParam && !node->isForEachItem)
75
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 2 softError(node, REFERENCE_WITHOUT_INITIALIZER, "References must always be initialized directly");
76
77 // If this is a struct, check for the default ctor
78
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 28225 if (localVarType.is(TY_STRUCT) && !node->isFctParam && !node->isForEachItem) {
79
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 191 Scope *matchScope = localVarType.getBodyScope();
80
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 191 assert(matchScope != nullptr);
81 // Check if we are required to call a ctor
82
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 191 node->isCtorCallRequired = !localVarType.isTriviallyConstructible(node);
83 // Check if we have a no-args ctor to call
84 191 const QualType &thisType = localVarType;
85
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 573 node->calledInitCtor = FunctionManager::match(matchScope, CTOR_FUNCTION_NAME, thisType, {}, {}, false, node);
86
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 191 if (node->calledInitCtor == nullptr && node->isCtorCallRequired) {
87
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 5 const std::string &structName = localVarType.getSubType();
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 5 const auto msg = "Struct '" + structName + "' is not trivially constructible and has no no-args constructor.";
89
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 5 SOFT_ERROR_QT(node, NO_MATCHING_CTOR_FOUND, msg);
90 5 }
91 }
92 }
93
94 // Update the type of the variable
95
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 39146 localVarEntry->updateType(localVarType, true);
96
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 39146 node->entries.at(manIdx) = localVarEntry;
97
98 // Update the state of the variable
99
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 39146 localVarEntry->updateState(INITIALIZED, node);
100
101
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 39146 return localVarType;
102 }
103
104 10422 std::any TypeChecker::visitReturnStmt(ReturnStmtNode *node) {
105 // Retrieve return variable entry
106
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 31266 SymbolTableEntry *returnVar = currentScope->lookup(RETURN_VARIABLE_NAME);
107 10422 const bool isFunction = returnVar != nullptr;
108
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 10422 const QualType returnType = isFunction ? returnVar->getQualType() : QualType(TY_DYN);
109
110 // Check if procedure with return value
111
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 10422 if (!isFunction) {
112
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 67 if (node->hasReturnValue)
113
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 6 SOFT_ERROR_ER(node->assignExpr, RETURN_WITH_VALUE_IN_PROCEDURE, "Return with value in procedure is not allowed")
114
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 65 return nullptr;
115 }
116
117
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 10355 if (!node->hasReturnValue && !returnVar->getLifecycle().isInitialized())
118
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 6 SOFT_ERROR_QT(node, RETURN_WITHOUT_VALUE_RESULT, "Return without value, but result variable is not initialized yet")
119
120
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 10353 if (!node->hasReturnValue)
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 4 return nullptr;
122
123 // Visit right side
124
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 10349 const auto rhs = std::any_cast<ExprResult>(visit(node->assignExpr));
125
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 10349 HANDLE_UNRESOLVED_TYPE_QT(rhs.type)
126
127 // Check if types match
128 10349 const ExprResult returnResult = {returnType, returnVar};
129
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 10349 auto [_, copyCtor] = opRuleManager.getAssignResultType(node->assignExpr, returnResult, rhs, false, true, ERROR_MSG_RETURN);
130 10346 node->calledCopyCtor = copyCtor;
131
132 // Check if the dtor call on the return value can be skipped
133
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 10346 if (rhs.entry != nullptr) {
134
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 2510 if (rhs.entry->anonymous) {
135 // If there is an anonymous entry attached (e.g. for struct instantiation), delete it
136
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 869 currentScope->symbolTable.deleteAnonymous(rhs.entry->name);
137 } else {
138 // Otherwise omit the destructor call, because the caller destructs the value
139 1641 rhs.entry->omitDtorCall = true;
140 }
141 }
142
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 10346 return node->returnType = returnType;
144 }
145
146 134 std::any TypeChecker::visitBreakStmt(BreakStmtNode *node) {
147 // Check if the stated number is valid
148
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 134 if (node->breakTimes < 1)
149
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 1 SOFT_ERROR_ER(node, INVALID_BREAK_NUMBER, "Break count must be >= 1, you provided " + std::to_string(node->breakTimes))
150
151 // Check if we can break this often
152 133 const unsigned int maxBreaks = currentScope->getLoopNestingDepth();
153
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 133 if (static_cast<unsigned int>(node->breakTimes) > maxBreaks)
154
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 1 SOFT_ERROR_ER(node, INVALID_BREAK_NUMBER, "We can only break " + std::to_string(maxBreaks) + " time(s) here")
155
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 132 return nullptr;
157 }
158
159 419 std::any TypeChecker::visitContinueStmt(ContinueStmtNode *node) {
160 // Check if the stated number is valid
161
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 419 if (node->continueTimes < 1)
162
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 1 SOFT_ERROR_ER(node, INVALID_CONTINUE_NUMBER,
163 "Continue count must be >= 1, you provided " + std::to_string(node->continueTimes))
164
165 // Check if we can continue this often
166 418 const unsigned int maxContinues = currentScope->getLoopNestingDepth();
167
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 418 if (static_cast<unsigned int>(node->continueTimes) > maxContinues)
168
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 1 SOFT_ERROR_ER(node, INVALID_CONTINUE_NUMBER, "We can only continue " + std::to_string(maxContinues) + " time(s) here")
169
170
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 417 return nullptr;
171 }
172
173 6 std::any TypeChecker::visitFallthroughStmt(FallthroughStmtNode *node) {
174 // Check if we can do a fallthrough here
175
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 6 if (!currentScope->isInCaseBranch())
176
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 6 SOFT_ERROR_ER(node, FALLTHROUGH_NOT_ALLOWED, "Fallthrough is only allowed in case branches")
177
178
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 4 return nullptr;
179 }
180
181 1238 std::any TypeChecker::visitAssertStmt(AssertStmtNode *node) {
182 // Visit condition
183
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 1238 const QualType conditionType = std::any_cast<ExprResult>(visit(node->assignExpr)).type;
184
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 1238 HANDLE_UNRESOLVED_TYPE_ER(conditionType)
185
186 // Check if condition evaluates to bool
187
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 1238 if (!conditionType.is(TY_BOOL))
188
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 3 SOFT_ERROR_ER(node->assignExpr, ASSERTION_CONDITION_BOOL, "The asserted condition must be of type bool")
189
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 1237 return nullptr;
191 }
192
193 } // namespace spice::compiler
194