GCC Code Coverage Report

Directory: ../
File: src/typechecker/TypeCheckerExpressions.cpp
Date: 2025-08-06 09:08:57
Exec Total Coverage
Lines: 397 407 97.5%
Functions: 16 16 100.0%
Branches: 676 1215 55.6%
Line Branch Exec Source
1 // Copyright (c) 2021-2025 ChilliBits. All rights reserved.
2
3 #include "TypeChecker.h"
4
5 #include <SourceFile.h>
6 #include <global/GlobalResourceManager.h>
7 #include <symboltablebuilder/SymbolTableBuilder.h>
8 #include <typechecker/MacroDefs.h>
9
10 namespace spice::compiler {
11
12 67338 std::any TypeChecker::visitAssignExpr(AssignExprNode *node) {
13 // Check if ternary
14
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 67338 if (node->ternaryExpr) {
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 61671 auto result = std::any_cast<ExprResult>(visit(node->ternaryExpr));
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 61656 node->setEvaluatedSymbolType(result.type, manIdx);
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 61656 return result;
18 }
19
20 // Check if assignment
21
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 5667 if (node->op != AssignExprNode::AssignOp::OP_NONE) {
22 // Visit the right side first
23
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 5667 auto rhs = std::any_cast<ExprResult>(visit(node->rhs));
24 5667 auto [rhsType, rhsEntry] = rhs;
25
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 5667 HANDLE_UNRESOLVED_TYPE_ER(rhsType)
26 // Then visit the left side
27
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 5666 auto lhs = std::any_cast<ExprResult>(visit(node->lhs));
28 5666 auto [lhsType, lhsVar] = lhs;
29
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 5666 HANDLE_UNRESOLVED_TYPE_ER(lhsType)
30
31 // Take a look at the operator
32
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 5665 if (node->op == AssignExprNode::AssignOp::OP_ASSIGN) {
33
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 5059 const bool isDecl = lhs.entry != nullptr && lhs.entry->isField() && !lhs.entry->getLifecycle().isInitialized();
34
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 5059 rhsType = opRuleManager.getAssignResultType(node, lhs, rhs, isDecl).first;
35
36 // If there is an anonymous entry attached (e.g. for struct instantiation), delete it
37
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 5058 if (rhsEntry != nullptr && rhsEntry->anonymous)
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 206 currentScope->symbolTable.deleteAnonymous(rhsEntry->name);
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 606 } else if (node->op == AssignExprNode::AssignOp::OP_PLUS_EQUAL) {
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 246 rhsType = opRuleManager.getPlusEqualResultType(node, lhs, rhs, 0).type;
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 360 } else if (node->op == AssignExprNode::AssignOp::OP_MINUS_EQUAL) {
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 33 rhsType = opRuleManager.getMinusEqualResultType(node, lhs, rhs, 0).type;
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 327 } else if (node->op == AssignExprNode::AssignOp::OP_MUL_EQUAL) {
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 19 rhsType = opRuleManager.getMulEqualResultType(node, lhs, rhs, 0).type;
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 308 } else if (node->op == AssignExprNode::AssignOp::OP_DIV_EQUAL) {
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 45 rhsType = opRuleManager.getDivEqualResultType(node, lhs, rhs, 0).type;
47
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 263 } else if (node->op == AssignExprNode::AssignOp::OP_REM_EQUAL) {
48
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 6 rhsType = opRuleManager.getRemEqualResultType(node, lhs, rhs);
49
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 257 } else if (node->op == AssignExprNode::AssignOp::OP_SHL_EQUAL) {
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 2 rhsType = opRuleManager.getSHLEqualResultType(node, lhs, rhs);
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 255 } else if (node->op == AssignExprNode::AssignOp::OP_SHR_EQUAL) {
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 3 rhsType = opRuleManager.getSHREqualResultType(node, lhs, rhs);
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 252 } else if (node->op == AssignExprNode::AssignOp::OP_AND_EQUAL) {
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 1 rhsType = opRuleManager.getAndEqualResultType(node, lhs, rhs);
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 251 } else if (node->op == AssignExprNode::AssignOp::OP_OR_EQUAL) {
56
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 1 rhsType = opRuleManager.getOrEqualResultType(node, lhs, rhs);
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 250 } else if (node->op == AssignExprNode::AssignOp::OP_XOR_EQUAL) {
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 250 rhsType = opRuleManager.getXorEqualResultType(node, lhs, rhs);
59 }
60
61
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 5664 if (lhsVar) { // Variable is involved on the left side
62 // Perform type inference
63
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 5664 if (lhsType.is(TY_DYN))
64
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 1 lhsVar->updateType(rhsType, false);
65
66 // In case the lhs variable is captured, notify the capture about the write access
67
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 5664 if (Capture *lhsCapture = currentScope->symbolTable.lookupCapture(lhsVar->name); lhsCapture)
68
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 3 lhsCapture->setAccessType(READ_WRITE);
69
70 // Update the state of the variable
71
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 5664 lhsVar->updateState(INITIALIZED, node);
72 }
73
74
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 5664 return ExprResult{node->setEvaluatedSymbolType(rhsType, manIdx)};
75 }
76
77 − throw CompilerError(UNHANDLED_BRANCH, "AssignExpr fall-through"); // GCOV_EXCL_LINE
78 }
79
80 62299 std::any TypeChecker::visitTernaryExpr(TernaryExprNode *node) {
81 // Check if there is a ternary operator applied
82
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 62299 if (!node->falseExpr)
83
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 61849 return visit(node->condition);
84
85 // Visit condition
86
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 450 const auto condition = std::any_cast<ExprResult>(visit(node->condition));
87
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 450 HANDLE_UNRESOLVED_TYPE_ER(condition.type)
88
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 450 const auto trueExpr = node->isShortened ? condition : std::any_cast<ExprResult>(visit(node->trueExpr));
89 450 const auto [trueType, trueEntry] = trueExpr;
90
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 450 HANDLE_UNRESOLVED_TYPE_ER(trueType)
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 450 const auto falseExpr = std::any_cast<ExprResult>(visit(node->falseExpr));
92 450 const auto [falseType, falseEntry] = falseExpr;
93
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 450 HANDLE_UNRESOLVED_TYPE_ER(falseType)
94
95 // Check if the condition evaluates to bool
96
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 450 if (!condition.type.is(TY_BOOL))
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 3 SOFT_ERROR_ER(node->condition, OPERATOR_WRONG_DATA_TYPE, "Condition operand in ternary must be a bool")
98
99 // Check if trueType and falseType are matching
100
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 449 const QualType trueTypeModified = trueType.removeReferenceWrapper();
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 449 const QualType falseTypeModified = falseType.removeReferenceWrapper();
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 449 if (!trueTypeModified.matches(falseTypeModified, false, true, false))
103
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 1 SOFT_ERROR_ER(node, OPERATOR_WRONG_DATA_TYPE,
104 "True and false operands in ternary must be of same data type. Got " + trueType.getName(true) + " and " +
105 falseType.getName(true))
106
107 // If there is an anonymous symbol attached to left or right, remove it,
108 // since the result takes over the ownership of any destructible object.
109 448 bool removedAnonymousSymbols = false;
110
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 448 if (trueEntry) {
111
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 115 if (trueEntry->anonymous) {
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 68 currentScope->symbolTable.deleteAnonymous(trueEntry->name);
113 68 removedAnonymousSymbols = true;
114
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 47 } else if (!trueType.isRef() && !trueType.isTriviallyCopyable(node)) {
115 8 node->trueSideCallsCopyCtor = true;
116 }
117 }
118
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 448 if (falseEntry) {
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 295 if (falseEntry->anonymous) {
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 67 currentScope->symbolTable.deleteAnonymous(falseEntry->name);
121 67 removedAnonymousSymbols = true;
122
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 228 } else if (!falseType.isRef() && !falseType.isTriviallyCopyable(node)) {
123 8 node->falseSideCallsCopyCtor = true;
124 }
125 }
126
127 // Create a new anonymous symbol for the result if required
128 448 const QualType &resultType = trueType;
129 448 SymbolTableEntry *anonymousSymbol = nullptr;
130
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 448 const bool calledCopyCtor = node->trueSideCallsCopyCtor || node->falseSideCallsCopyCtor;
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 448 if (removedAnonymousSymbols || calledCopyCtor || resultType.isRef())
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 84 anonymousSymbol = currentScope->symbolTable.insertAnonymous(resultType, node);
133
134 // Look up the copy ctor if at least one side needs it
135
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 448 if (node->trueSideCallsCopyCtor || node->falseSideCallsCopyCtor)
136
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 10 node->calledCopyCtor = matchCopyCtor(trueTypeModified, node);
137
138
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 448 return ExprResult{node->setEvaluatedSymbolType(resultType, manIdx), anonymousSymbol};
139 }
140
141 63198 std::any TypeChecker::visitLogicalOrExpr(LogicalOrExprNode *node) {
142 // Check if a logical or operator is applied
143
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 63198 if (node->operands.size() == 1)
144
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 62353 return visit(node->operands.front());
145
146 // Visit leftmost operand
147
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 845 auto currentOperand = std::any_cast<ExprResult>(visit(node->operands[0]));
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 845 HANDLE_UNRESOLVED_TYPE_ER(currentOperand.type)
149
150 // Loop through all remaining operands
151
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 1929 for (size_t i = 1; i < node->operands.size(); i++) {
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 1085 auto rhsOperand = std::any_cast<ExprResult>(visit(node->operands[i]));
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 1085 HANDLE_UNRESOLVED_TYPE_ER(rhsOperand.type)
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 1085 currentOperand = {OpRuleManager::getLogicalOrResultType(node, currentOperand, rhsOperand)};
155 }
156
157
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 844 node->setEvaluatedSymbolType(currentOperand.type, manIdx);
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 844 return currentOperand;
159 }
160
161 64283 std::any TypeChecker::visitLogicalAndExpr(LogicalAndExprNode *node) {
162 // Check if a logical and operator is applied
163
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 64283 if (node->operands.size() == 1)
164
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 64138 return visit(node->operands.front());
165
166 // Visit leftmost operand
167
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 145 auto currentOperand = std::any_cast<ExprResult>(visit(node->operands[0]));
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 145 HANDLE_UNRESOLVED_TYPE_ER(currentOperand.type)
169
170 // Loop through all remaining operands
171
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 325 for (size_t i = 1; i < node->operands.size(); i++) {
172
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 180 auto rhsOperand = std::any_cast<ExprResult>(visit(node->operands[i]));
173
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 180 HANDLE_UNRESOLVED_TYPE_ER(rhsOperand.type)
174
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 180 currentOperand = {OpRuleManager::getLogicalAndResultType(node, currentOperand, rhsOperand)};
175 }
176
177
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 145 node->setEvaluatedSymbolType(currentOperand.type, manIdx);
178
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 145 return currentOperand;
179 }
180
181 64463 std::any TypeChecker::visitBitwiseOrExpr(BitwiseOrExprNode *node) {
182 // Check if a bitwise or operator is applied
183
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 64463 if (node->operands.size() == 1)
184
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 64396 return visit(node->operands.front());
185
186 // Visit leftmost operand
187
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 67 auto currentOperand = std::any_cast<ExprResult>(visit(node->operands[0]));
188
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 67 HANDLE_UNRESOLVED_TYPE_ER(currentOperand.type)
189
190 // Loop through all remaining operands
191
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 136 for (size_t i = 1; i < node->operands.size(); i++) {
192
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 70 auto rhsOperand = std::any_cast<ExprResult>(visit(node->operands[i]));
193
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 70 HANDLE_UNRESOLVED_TYPE_ER(rhsOperand.type)
194
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 70 currentOperand = {OpRuleManager::getBitwiseOrResultType(node, currentOperand, rhsOperand)};
195 }
196
197
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 66 node->setEvaluatedSymbolType(currentOperand.type, manIdx);
198
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 66 return currentOperand;
199 }
200
201 64533 std::any TypeChecker::visitBitwiseXorExpr(BitwiseXorExprNode *node) {
202 // Check if a bitwise xor operator is applied
203
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 64533 if (node->operands.size() == 1)
204
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 64529 return visit(node->operands.front());
205
206 // Visit leftmost operand
207
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 4 auto currentOperand = std::any_cast<ExprResult>(visit(node->operands[0]));
208
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 4 HANDLE_UNRESOLVED_TYPE_ER(currentOperand.type)
209
210 // Loop through all remaining operands
211
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 11 for (size_t i = 1; i < node->operands.size(); i++) {
212
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 7 auto rhsOperand = std::any_cast<ExprResult>(visit(node->operands[i]));
213
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 7 HANDLE_UNRESOLVED_TYPE_ER(rhsOperand.type)
214
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 7 currentOperand = {OpRuleManager::getBitwiseXorResultType(node, currentOperand, rhsOperand)};
215 }
216
217
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 4 node->setEvaluatedSymbolType(currentOperand.type, manIdx);
218
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 4 return currentOperand;
219 }
220
221 64540 std::any TypeChecker::visitBitwiseAndExpr(BitwiseAndExprNode *node) {
222 // Check if a bitwise and operator is applied
223
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 64540 if (node->operands.size() == 1)
224
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 64513 return visit(node->operands.front());
225
226 // Visit leftmost operand
227
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 27 auto currentOperand = std::any_cast<ExprResult>(visit(node->operands[0]));
228
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 27 HANDLE_UNRESOLVED_TYPE_ER(currentOperand.type)
229
230 // Loop through all remaining operands
231
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 57 for (size_t i = 1; i < node->operands.size(); i++) {
232
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 30 auto rhsOperand = std::any_cast<ExprResult>(visit(node->operands[i]));
233
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 30 HANDLE_UNRESOLVED_TYPE_ER(rhsOperand.type)
234
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 30 currentOperand = {OpRuleManager::getBitwiseAndResultType(node, currentOperand, rhsOperand)};
235 }
236
237
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 27 node->setEvaluatedSymbolType(currentOperand.type, manIdx);
238
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 27 return currentOperand;
239 }
240
241 64570 std::any TypeChecker::visitEqualityExpr(EqualityExprNode *node) {
242 // Check if at least one equality operator is applied
243
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 64570 if (node->operands.size() == 1)
244
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 59817 return visit(node->operands.front());
245
246 // Visit right side first, then left side
247
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 4753 const auto rhs = std::any_cast<ExprResult>(visit(node->operands[1]));
248
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 4753 HANDLE_UNRESOLVED_TYPE_ER(rhs.type)
249
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 4753 const auto lhs = std::any_cast<ExprResult>(visit(node->operands[0]));
250
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 4753 HANDLE_UNRESOLVED_TYPE_ER(lhs.type)
251
252 // Check if we need the string runtime to perform a string comparison
253
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 4879 if (lhs.type.is(TY_STRING) && rhs.type.is(TY_STRING) && !sourceFile->isStringRT())
254
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 126 sourceFile->requestRuntimeModule(STRING_RT);
255
256 // Check operator
257 4753 ExprResult result;
258
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 4753 if (node->op == EqualityExprNode::EqualityOp::OP_EQUAL) // Operator was equal
259
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 3387 result = opRuleManager.getEqualResultType(node, lhs, rhs, 0);
260
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 1366 else if (node->op == EqualityExprNode::EqualityOp::OP_NOT_EQUAL) // Operator was not equal
261
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 1366 result = opRuleManager.getNotEqualResultType(node, lhs, rhs, 0);
262 else
263 − throw CompilerError(UNHANDLED_BRANCH, "EqualityExpr fall-through"); // GCOV_EXCL_LINE
264
265
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 4752 node->setEvaluatedSymbolType(result.type, manIdx);
266
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 4752 return result;
267 }
268
269 69323 std::any TypeChecker::visitRelationalExpr(RelationalExprNode *node) {
270 // Check if a relational operator is applied
271
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 69323 if (node->operands.size() == 1)
272
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 65879 return visit(node->operands.front());
273
274 // Visit right side first, then left side
275
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 3444 const auto rhs = std::any_cast<ExprResult>(visit(node->operands[1]));
276
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 3444 HANDLE_UNRESOLVED_TYPE_ER(rhs.type)
277
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 3443 const auto lhs = std::any_cast<ExprResult>(visit(node->operands[0]));
278
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 3443 HANDLE_UNRESOLVED_TYPE_ER(lhs.type)
279
280 // Check operator
281 3443 QualType resultType;
282
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 3443 if (node->op == RelationalExprNode::RelationalOp::OP_LESS) // Operator was less
283
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 1690 resultType = OpRuleManager::getLessResultType(node, lhs, rhs);
284
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 1753 else if (node->op == RelationalExprNode::RelationalOp::OP_GREATER) // Operator was greater
285
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 477 resultType = OpRuleManager::getGreaterResultType(node, lhs, rhs);
286
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 1276 else if (node->op == RelationalExprNode::RelationalOp::OP_LESS_EQUAL) // Operator was less equal
287
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 357 resultType = OpRuleManager::getLessEqualResultType(node, lhs, rhs);
288
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 919 else if (node->op == RelationalExprNode::RelationalOp::OP_GREATER_EQUAL) // Operator was greater equal
289
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 919 resultType = OpRuleManager::getGreaterEqualResultType(node, lhs, rhs);
290 else
291 − throw CompilerError(UNHANDLED_BRANCH, "RelationalExpr fall-through"); // GCOV_EXCL_LINE
292
293
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 3442 return ExprResult{node->setEvaluatedSymbolType(resultType, manIdx)};
294 }
295
296 72766 std::any TypeChecker::visitShiftExpr(ShiftExprNode *node) {
297 // Check if at least one shift operator is applied
298
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 72766 if (node->operands.size() == 1)
299
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 72704 return visit(node->operands.front());
300
301 // Visit leftmost operand
302
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 62 auto currentResult = std::any_cast<ExprResult>(visit(node->operands[0]));
303
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 62 HANDLE_UNRESOLVED_TYPE_ER(currentResult.type)
304
305 // Loop through remaining operands
306
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 164 for (size_t i = 0; i < node->opQueue.size(); i++) {
307
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 102 auto operandResult = std::any_cast<ExprResult>(visit(node->operands[i + 1]));
308
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 102 HANDLE_UNRESOLVED_TYPE_ER(operandResult.type)
309
310 // Check operator
311 102 const ShiftExprNode::ShiftOp &op = node->opQueue.front().first;
312
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 102 if (op == ShiftExprNode::ShiftOp::OP_SHIFT_LEFT)
313
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 95 currentResult = opRuleManager.getShiftLeftResultType(node, currentResult, operandResult, i);
314
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 7 else if (op == ShiftExprNode::ShiftOp::OP_SHIFT_RIGHT)
315
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 7 currentResult = opRuleManager.getShiftRightResultType(node, currentResult, operandResult, i);
316 else
317 − throw CompilerError(UNHANDLED_BRANCH, "ShiftExpr fall-through"); // GCOV_EXCL_LINE
318
319 // Push the new item and pop the old one on the other side of the queue
320
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 102 node->opQueue.emplace(op, currentResult.type);
321 102 node->opQueue.pop();
322 }
323
324
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 62 node->setEvaluatedSymbolType(currentResult.type, manIdx);
325
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 62 return currentResult;
326 }
327
328 72868 std::any TypeChecker::visitAdditiveExpr(AdditiveExprNode *node) {
329 // Check if at least one additive operator is applied
330
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 72868 if (node->operands.size() == 1)
331
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 68944 return visit(node->operands.front());
332
333 // Visit leftmost operand
334
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 3924 auto currentResult = std::any_cast<ExprResult>(visit(node->operands[0]));
335
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 3924 HANDLE_UNRESOLVED_TYPE_ER(currentResult.type)
336
337 // Loop through remaining operands
338
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 8388 for (size_t i = 0; i < node->opQueue.size(); i++) {
339
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 4465 auto operandResult = std::any_cast<ExprResult>(visit(node->operands[i + 1]));
340
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 4465 HANDLE_UNRESOLVED_TYPE_ER(operandResult.type)
341
342 // Check operator
343 4465 const AdditiveExprNode::AdditiveOp &op = node->opQueue.front().first;
344
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 4465 if (op == AdditiveExprNode::AdditiveOp::OP_PLUS)
345
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 2739 currentResult = opRuleManager.getPlusResultType(node, currentResult, operandResult, i);
346
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 1726 else if (op == AdditiveExprNode::AdditiveOp::OP_MINUS)
347
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 1726 currentResult = opRuleManager.getMinusResultType(node, currentResult, operandResult, i);
348 else
349 − throw CompilerError(UNHANDLED_BRANCH, "AdditiveExpr fall-through"); // GCOV_EXCL_LINE
350
351 // Push the new item and pop the old one on the other side of the queue
352
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 4464 node->opQueue.emplace(op, currentResult.type);
353 4464 node->opQueue.pop();
354 }
355
356
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 3923 node->setEvaluatedSymbolType(currentResult.type, manIdx);
357
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 3923 return currentResult;
358 }
359
360 77333 std::any TypeChecker::visitMultiplicativeExpr(MultiplicativeExprNode *node) {
361 // Check if at least one multiplicative operator is applied
362
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 77333 if (node->operands.size() == 1)
363
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 76511 return visit(node->operands.front());
364
365 // Visit leftmost operand
366
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 822 auto currentResult = std::any_cast<ExprResult>(visit(node->operands[0]));
367
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 822 HANDLE_UNRESOLVED_TYPE_ER(currentResult.type)
368 // Loop through remaining operands
369
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 1667 for (size_t i = 0; i < node->opQueue.size(); i++) {
370
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 846 auto operandResult = std::any_cast<ExprResult>(visit(node->operands[i + 1]));
371
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 846 HANDLE_UNRESOLVED_TYPE_ER(operandResult.type)
372
373 // Check operator
374 846 const MultiplicativeExprNode::MultiplicativeOp &op = node->opQueue.front().first;
375
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 846 if (op == MultiplicativeExprNode::MultiplicativeOp::OP_MUL)
376
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 702 currentResult = opRuleManager.getMulResultType(node, currentResult, operandResult, i);
377
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 144 else if (op == MultiplicativeExprNode::MultiplicativeOp::OP_DIV)
378
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 134 currentResult = opRuleManager.getDivResultType(node, currentResult, operandResult, i);
379
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 10 else if (op == MultiplicativeExprNode::MultiplicativeOp::OP_REM)
380
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 10 currentResult = OpRuleManager::getRemResultType(node, currentResult, operandResult);
381 else
382 − throw CompilerError(UNHANDLED_BRANCH, "Multiplicative fall-through"); // GCOV_EXCL_LINE
383
384 // Push the new item and pop the old one on the other side of the queue
385
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 845 node->opQueue.emplace(op, currentResult.type);
386 845 node->opQueue.pop();
387 }
388
389
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 821 node->setEvaluatedSymbolType(currentResult.type, manIdx);
390
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 821 return currentResult;
391 }
392
393 78179 std::any TypeChecker::visitCastExpr(CastExprNode *node) {
394 // Check if cast is applied
395
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 78179 if (!node->isCast)
396
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 75830 return visit(node->prefixUnaryExpr);
397
398 // Visit destination type
399
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 2349 const auto dstType = std::any_cast<QualType>(visit(node->dataType));
400
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 2349 HANDLE_UNRESOLVED_TYPE_ER(dstType)
401 // Visit source type
402
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 2349 const auto src = std::any_cast<ExprResult>(visit(node->assignExpr));
403
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 2349 HANDLE_UNRESOLVED_TYPE_ER(src.type)
404
405 // Check for identity cast
406
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 2349 if (src.type == dstType) {
407
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 225 const CompilerWarning warning(node->codeLoc, IDENTITY_CAST, "You cast from a type to itself. Thus, this can be simplified.");
408
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 225 sourceFile->compilerOutput.warnings.push_back(warning);
409 225 }
410
411 // Get result type
412
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 2349 const QualType resultType = opRuleManager.getCastResultType(node, dstType, src);
413
414
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 2349 const bool typesMatch = dstType.matches(src.type, false, true, true);
415
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 2349 const bool sameContainerType = src.type.isSameContainerTypeAs(dstType);
416
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 2349 SymbolTableEntry *entry = typesMatch || sameContainerType ? src.entry : nullptr;
417
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 2349 return ExprResult{node->setEvaluatedSymbolType(resultType, manIdx), entry};
418 }
419
420 82485 std::any TypeChecker::visitPrefixUnaryExpr(PrefixUnaryExprNode *node) {
421 // If no operator is applied, simply visit the postfix unary expression
422
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 82485 if (node->op == PrefixUnaryExprNode::PrefixUnaryOp::OP_NONE)
423
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 81496 return visit(node->postfixUnaryExpr);
424
425 // Visit the right side
426 989 PrefixUnaryExprNode *rhsNode = node->prefixUnaryExpr;
427
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 989 auto operand = std::any_cast<ExprResult>(visit(rhsNode));
428 989 auto [operandType, operandEntry] = operand;
429
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 989 HANDLE_UNRESOLVED_TYPE_ER(operandType)
430 // Determine action, based on the given operator
431
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 988 switch (node->op) {
432 16 case PrefixUnaryExprNode::PrefixUnaryOp::OP_MINUS:
433
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 16 operandType = OpRuleManager::getPrefixMinusResultType(node, operand);
434 16 break;
435 19 case PrefixUnaryExprNode::PrefixUnaryOp::OP_PLUS_PLUS:
436
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 19 operandType = opRuleManager.getPrefixPlusPlusResultType(node, operand);
437
438
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 19 if (operandEntry) {
439 // In case the lhs is captured, notify the capture about the write access
440
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 16 if (Capture *lhsCapture = currentScope->symbolTable.lookupCapture(operandEntry->name); lhsCapture)
441 ✗ lhsCapture->setAccessType(READ_WRITE);
442
443 // Update the state of the variable
444
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 16 operandEntry->updateState(INITIALIZED, node);
445 }
446
447 19 break;
448 8 case PrefixUnaryExprNode::PrefixUnaryOp::OP_MINUS_MINUS:
449
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 8 operandType = opRuleManager.getPrefixMinusMinusResultType(node, operand);
450
451
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 7 if (operandEntry) {
452 // In case the lhs is captured, notify the capture about the write access
453
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 4 if (Capture *lhsCapture = currentScope->symbolTable.lookupCapture(operandEntry->name); lhsCapture)
454 ✗ lhsCapture->setAccessType(READ_WRITE);
455
456 // Update the state of the variable
457
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 4 operandEntry->updateState(INITIALIZED, node);
458 }
459
460 7 break;
461 684 case PrefixUnaryExprNode::PrefixUnaryOp::OP_NOT:
462
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 684 operandType = OpRuleManager::getPrefixNotResultType(node, operand);
463 684 break;
464 1 case PrefixUnaryExprNode::PrefixUnaryOp::OP_BITWISE_NOT:
465
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 1 operandType = OpRuleManager::getPrefixBitwiseNotResultType(node, operand);
466 1 break;
467 180 case PrefixUnaryExprNode::PrefixUnaryOp::OP_DEREFERENCE:
468
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 180 operandType = OpRuleManager::getPrefixMulResultType(node, operand);
469 180 break;
470 80 case PrefixUnaryExprNode::PrefixUnaryOp::OP_ADDRESS_OF:
471
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 80 operandType = OpRuleManager::getPrefixBitwiseAndResultType(node, operand);
472 80 break;
473 − default: // GCOV_EXCL_LINE
474 − throw CompilerError(UNHANDLED_BRANCH, "PrefixUnaryExpr fall-through"); // GCOV_EXCL_LINE
475 }
476
477
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 987 return ExprResult{node->setEvaluatedSymbolType(operandType, manIdx), operandEntry};
478 }
479
480 101214 std::any TypeChecker::visitPostfixUnaryExpr(PostfixUnaryExprNode *node) {
481 // If no operator is applied, simply visit the atomic expression
482
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 101214 if (node->op == PostfixUnaryExprNode::PostfixUnaryOp::OP_NONE)
483
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 81496 return visit(node->atomicExpr);
484
485 // Visit left side
486 19718 PostfixUnaryExprNode *lhsNode = node->postfixUnaryExpr;
487
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 19718 auto operand = std::any_cast<ExprResult>(visit(lhsNode));
488 19718 auto [operandType, operandEntry] = operand;
489
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 19718 HANDLE_UNRESOLVED_TYPE_ER(operandType)
490
491
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 19712 switch (node->op) {
492 3094 case PostfixUnaryExprNode::PostfixUnaryOp::OP_SUBSCRIPT: {
493 // Visit index assignment
494 3094 AssignExprNode *indexAssignExpr = node->subscriptIndexExpr;
495
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 3094 const auto index = std::any_cast<ExprResult>(visit(indexAssignExpr));
496
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 3094 HANDLE_UNRESOLVED_TYPE_ER(index.type)
497
498 // Check is there is an overloaded operator function available, if yes accept it
499
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 3094 const auto [type, _] = opRuleManager.isOperatorOverloadingFctAvailable<2>(node, OP_FCT_SUBSCRIPT, {operand, index}, 0);
500
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 3094 if (!type.is(TY_INVALID)) {
501 110 operandType = type;
502 3092 break;
503 }
504
505
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 2984 operandType = operandType.removeReferenceWrapper();
506
507 // Check if the index is of the right type
508
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 2984 if (!index.type.isOneOf({TY_INT, TY_LONG}))
509
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 3 SOFT_ERROR_ER(node, ARRAY_INDEX_NOT_INT_OR_LONG, "Array index must be of type int or long")
510
511 // Check if we can apply the subscript operator on the lhs type
512
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 2983 if (!operandType.isOneOf({TY_ARRAY, TY_PTR, TY_STRING}))
513 ✗ SOFT_ERROR_ER(node, OPERATOR_WRONG_DATA_TYPE,
514 "Can only apply subscript operator on array type, got " + operandType.getName(true))
515
516 // Check if we have an unsafe operation
517
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 2983 if (operandType.isPtr() && !currentScope->doesAllowUnsafeOperations())
518 ✗ SOFT_ERROR_ER(
519 node, UNSAFE_OPERATION_IN_SAFE_CONTEXT,
520 "The subscript operator on pointers is an unsafe operation. Use unsafe blocks if you know what you are doing.")
521
522 // In case of compile time index value and known array size, perform a compile time out-of-bounds check
523
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 2983 if (operandType.isArray() && operandType.getArraySize() != ARRAY_SIZE_UNKNOWN && indexAssignExpr->hasCompileTimeValue()) {
524
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 34 const int32_t constIndex = indexAssignExpr->getCompileTimeValue().intValue;
525
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 34 const unsigned int constSize = operandType.getArraySize();
526 // Check if we are accessing out-of-bounds memory
527
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 34 if (constIndex >= static_cast<int32_t>(constSize)) {
528 1 const std::string idxStr = std::to_string(constIndex);
529 1 const std::string sizeStr = std::to_string(constSize);
530
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 1 SOFT_ERROR_ER(node, ARRAY_INDEX_OUT_OF_BOUNDS,
531 "You are trying to access element with index " + idxStr + " of an array with size " + sizeStr)
532 1 }
533 }
534
535 // Get item type
536
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 2982 operandType = operandType.getContained();
537
538 // Remove heap qualifier
539 2982 operandType.getQualifiers().isHeap = false;
540
541 2982 break;
542 }
543 14601 case PostfixUnaryExprNode::PostfixUnaryOp::OP_MEMBER_ACCESS: {
544 14601 const std::string &fieldName = node->identifier;
545
546 // Check if lhs is enum or strobj
547
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 14601 const QualType lhsBaseTy = operandType.autoDeReference();
548
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 14601 if (!lhsBaseTy.is(TY_STRUCT))
549
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 1 SOFT_ERROR_ER(node, INVALID_MEMBER_ACCESS, "Cannot apply member access operator on " + operandType.getName(false))
550
551 // Retrieve registry entry
552
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 14600 const std::string &structName = lhsBaseTy.getSubType();
553
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 14600 Scope *structScope = lhsBaseTy.getBodyScope();
554
555 // If we only have the generic struct scope, lookup the concrete manifestation scope
556
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 14600 if (structScope->isGenericScope) {
557
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 78 const Struct *spiceStruct = lhsBaseTy.getStruct(node);
558
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 78 assert(spiceStruct != nullptr);
559 78 structScope = spiceStruct->scope;
560 }
561
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 14600 assert(!structScope->isGenericScope); // At this point we always expect a substantiation scope
562
563 // Get accessed field
564 14600 std::vector<size_t> indexPath;
565
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 14600 SymbolTableEntry *memberEntry = structScope->symbolTable.lookupInComposedFields(fieldName, indexPath);
566
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 14600 if (!memberEntry)
567
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 2 SOFT_ERROR_ER(node, REFERENCED_UNDEFINED_VARIABLE, "Field '" + node->identifier + "' not found in struct " + structName)
568
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 14598 const QualType memberType = memberEntry->getQualType();
569
570 // Check for insufficient visibility
571
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 14598 if (structScope->isImportedBy(rootScope) && !memberEntry->getQualType().getBase().isPublic())
572 ✗ SOFT_ERROR_ER(node, INSUFFICIENT_VISIBILITY, "Cannot access field '" + fieldName + "' due to its private visibility")
573
574 // Set field to used
575 14598 memberEntry->used = true;
576
577 // Overwrite type and entry of left side with member type and entry
578 14598 operandType = memberType;
579 14598 operandEntry = memberEntry;
580 14598 break;
581
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 14600 }
582 1637 case PostfixUnaryExprNode::PostfixUnaryOp::OP_PLUS_PLUS: {
583
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 1637 operandType = opRuleManager.getPostfixPlusPlusResultType(node, operand, 0).type;
584
585
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 1636 if (operandEntry) {
586 // In case the lhs is captured, notify the capture about the write access
587
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 1632 if (Capture *lhsCapture = currentScope->symbolTable.lookupCapture(operandEntry->name); lhsCapture)
588
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 4 lhsCapture->setAccessType(READ_WRITE);
589
590 // Update the state of the variable
591
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 1632 operandEntry->updateState(INITIALIZED, node);
592 }
593
594 1636 break;
595 }
596 380 case PostfixUnaryExprNode::PostfixUnaryOp::OP_MINUS_MINUS: {
597
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 380 operandType = opRuleManager.getPostfixMinusMinusResultType(node, operand, 0).type;
598
599
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 380 if (operandEntry) {
600 // In case the lhs is captured, notify the capture about the write access
601
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 376 if (Capture *lhsCapture = currentScope->symbolTable.lookupCapture(operandEntry->name); lhsCapture)
602 ✗ lhsCapture->setAccessType(READ_WRITE);
603
604 // Update the state of the variable
605
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 376 operandEntry->updateState(INITIALIZED, node);
606 }
607
608 380 break;
609 }
610 − default: // GCOV_EXCL_LINE
611 − throw CompilerError(UNHANDLED_BRANCH, "PostfixUnaryExpr fall-through"); // GCOV_EXCL_LINE
612 }
613
614
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 19706 if (operandType.is(TY_INVALID)) {
615 ✗ const std::string &varName = operandEntry ? operandEntry->name : "";
616 ✗ SOFT_ERROR_ER(node, REFERENCED_UNDEFINED_VARIABLE, "Variable '" + varName + "' was referenced before declared")
617 ✗ }
618
619
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 19706 return ExprResult{node->setEvaluatedSymbolType(operandType, manIdx), operandEntry};
620 }
621
622 81496 std::any TypeChecker::visitAtomicExpr(AtomicExprNode *node) {
623 // Check if constant
624
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 81496 if (node->constant)
625
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 16156 return visit(node->constant);
626
627 // Check if value
628
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 65340 if (node->value)
629
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 15847 return visit(node->value);
630
631 // Check for builtin calls
632
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 49493 if (node->builtinCall)
633
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 1591 return visit(node->builtinCall);
634
635 // Check for assign expression within parentheses
636
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 47902 if (node->assignExpr)
637
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 512 return visit(node->assignExpr);
638
639 // Identifier (local or global variable access)
640
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 47390 assert(!node->fqIdentifier.empty());
641
642
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 47390 auto &[entry, accessScope, capture] = node->data.at(manIdx);
643 47390 accessScope = currentScope;
644
645 // Check if a local or global variable can be found by searching for the name
646
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 47390 if (node->identifierFragments.size() == 1)
647 94294 entry = accessScope->lookup(node->identifierFragments.back());
648
649 // If no local or global was found, search in the name registry
650
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 47390 if (!entry) {
651
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 319 const NameRegistryEntry *registryEntry = sourceFile->getNameRegistryEntry(node->fqIdentifier);
652
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 319 if (!registryEntry)
653
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 1 SOFT_ERROR_ER(node, REFERENCED_UNDEFINED_VARIABLE, "The variable '" + node->fqIdentifier + "' could not be found")
654 318 entry = registryEntry->targetEntry;
655 318 accessScope = registryEntry->targetScope;
656 }
657
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 47389 assert(entry != nullptr);
658 47389 entry->used = true;
659
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 47389 capture = accessScope->symbolTable.lookupCapture(entry->name);
660
661
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 47389 const QualType varType = entry->getQualType();
662
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 47389 HANDLE_UNRESOLVED_TYPE_ER(varType)
663
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 47380 if (varType.is(TY_INVALID))
664
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 2 SOFT_ERROR_ER(node, USED_BEFORE_DECLARED, "Symbol '" + entry->name + "' was used before declared.")
665
666
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 47378 if (varType.isOneOf({TY_FUNCTION, TY_PROCEDURE}) && entry->global) {
667 // Check if overloaded function was referenced
668
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 9 const std::vector<Function *> *manifestations = entry->declNode->getFctManifestations(entry->name);
669
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 9 if (manifestations->size() > 1)
670
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 3 SOFT_ERROR_ER(node, REFERENCED_OVERLOADED_FCT, "Overloaded functions / functions with optional params cannot be referenced")
671
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 8 if (!manifestations->front()->templateTypes.empty())
672
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 3 SOFT_ERROR_ER(node, REFERENCED_OVERLOADED_FCT, "Generic functions cannot be referenced")
673 // Set referenced function to used
674 7 Function *referencedFunction = manifestations->front();
675 7 referencedFunction->used = true;
676 7 referencedFunction->entry->used = true;
677 }
678
679 // The base type should be an extended primitive
680
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 47376 const QualType baseType = varType.getBase();
681
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 47376 if (!baseType.isExtendedPrimitive() && !baseType.is(TY_DYN))
682 ✗ SOFT_ERROR_ER(node, INVALID_SYMBOL_ACCESS, "A symbol of type " + varType.getName(false) + " cannot be accessed here")
683
684 // Check if we have seen a 'this.' prefix, because the generator needs that
685
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 47376 if (entry->scope->type == ScopeType::STRUCT && node->identifierFragments.front() != THIS_VARIABLE_NAME)
686
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 1 SOFT_ERROR_ER(node, REFERENCED_UNDEFINED_VARIABLE,
687 "The symbol '" + node->fqIdentifier + "' could not be found. Missing 'this.' prefix?")
688
689 // Ensure that the entry is public, if the symbol is imported.
690 // An exception are enum items. There it is sufficient, that the enum itself is public.
691
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 47375 if (accessScope->isImportedBy(rootScope) && accessScope->type != ScopeType::ENUM)
692
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 78 if (!entry->getQualType().getBase().isPublic())
693
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 1 SOFT_ERROR_ER(node, INSUFFICIENT_VISIBILITY, "Cannot access '" + entry->name + "' due to its private visibility")
694
695 // For enum item access, use access scope of the enum
696
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 47374 if (entry->scope->type == ScopeType::ENUM)
697 238 accessScope = entry->scope;
698
699 // For struct access, use access scope of the struct
700
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 47374 if (baseType.is(TY_STRUCT)) {
701
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 16577 const std::string &structName = baseType.getSubType();
702
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 16577 const NameRegistryEntry *nameRegistryEntry = sourceFile->getNameRegistryEntry(structName);
703
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 16577 assert(nameRegistryEntry != nullptr);
704 16577 accessScope = nameRegistryEntry->targetScope;
705
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 16577 assert(accessScope != nullptr);
706 }
707
708
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 47374 return ExprResult{node->setEvaluatedSymbolType(varType, manIdx), entry};
709 }
710
711 } // namespace spice::compiler
712