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| 1 | // Copyright (c) 2021-2025 ChilliBits. All rights reserved. | ||
| 2 | |||
| 3 | #include "SymbolTableEntry.h" | ||
| 4 | |||
| 5 | #include <ast/ASTNodes.h> | ||
| 6 | #include <exception/SemanticError.h> | ||
| 7 | #include <symboltablebuilder/Scope.h> | ||
| 8 | #include <util/CodeLoc.h> | ||
| 9 | |||
| 10 | namespace spice::compiler { | ||
| 11 | |||
| 12 | /** | ||
| 13 | * Retrieve the qualified type of this symbol | ||
| 14 | * | ||
| 15 | * @return Qualified type of this symbol | ||
| 16 | */ | ||
| 17 | 1653393 | const QualType &SymbolTableEntry::getQualType() const { return qualType; } | |
| 18 | |||
| 19 | /** | ||
| 20 | * Update the type of this symbol. | ||
| 21 | * | ||
| 22 | * @param newType New type of the current symbol | ||
| 23 | * @param overwriteExistingType Overwrites the existing type without throwing an error | ||
| 24 | */ | ||
| 25 | 71590 | void SymbolTableEntry::updateType(const QualType &newType, [[maybe_unused]] bool overwriteExistingType) { | |
| 26 |
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71590 | assert(overwriteExistingType || qualType.isOneOf({TY_INVALID, TY_DYN})); |
| 27 | 71590 | qualType = newType; | |
| 28 | 71590 | } | |
| 29 | |||
| 30 | /** | ||
| 31 | * Update the state of the current symbol | ||
| 32 | * | ||
| 33 | * @throws CompilerError When the state of the symbol is set to initialized before a concrete type was set | ||
| 34 | * | ||
| 35 | * @param newState New state of the current symbol | ||
| 36 | * @param node AST node where the update takes place | ||
| 37 | */ | ||
| 38 | 101595 | void SymbolTableEntry::updateState(const LifecycleState &newState, const ASTNode *node) { | |
| 39 | 101595 | const LifecycleState oldState = lifecycle.getCurrentState(); | |
| 40 | − | if (newState == DEAD && oldState == DECLARED) // GCOV_EXCL_LINE | |
| 41 | − | throw CompilerError(INTERNAL_ERROR, "Cannot destroy uninitialized variable '" + name + "'"); // GCOV_EXCL_LINE | |
| 42 | − | if (newState == DEAD && oldState == DEAD) // GCOV_EXCL_LINE | |
| 43 | − | throw CompilerError(INTERNAL_ERROR, "Cannot destroy already destroyed variable '" + name + "'"); // GCOV_EXCL_LINE | |
| 44 |
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101595 | lifecycle.addEvent({newState, node}); |
| 45 | 101595 | } | |
| 46 | |||
| 47 | /** | ||
| 48 | * Retrieve the code location where the symbol was declared | ||
| 49 | * | ||
| 50 | * @return Declaration code location | ||
| 51 | */ | ||
| 52 | 157 | const CodeLoc &SymbolTableEntry::getDeclCodeLoc() const { return declNode->codeLoc; } | |
| 53 | |||
| 54 | /** | ||
| 55 | * Retrieve the address of the assigned value | ||
| 56 | * | ||
| 57 | * @return Address of the value in memory | ||
| 58 | */ | ||
| 59 |
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63643 | llvm::Value *SymbolTableEntry::getAddress() const { return memAddress.empty() ? nullptr : memAddress.top(); } |
| 60 | |||
| 61 | /** | ||
| 62 | * Update the address of a symbol. This is used to save the allocated address where the symbol lives. | ||
| 63 | * | ||
| 64 | * @param address Address of the symbol in memory | ||
| 65 | */ | ||
| 66 | 49462 | void SymbolTableEntry::updateAddress(llvm::Value *address) { | |
| 67 |
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49462 | assert(address != nullptr); |
| 68 |
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49462 | assert(address->getType()->isPointerTy()); |
| 69 | // Ensure that structs fields get no addresses assigned, as the addresses are meant for the struct instances | ||
| 70 |
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49462 | assert((scope->type != ScopeType::STRUCT && scope->type != ScopeType::INTERFACE) || |
| 71 | qualType.isOneOf({TY_FUNCTION, TY_PROCEDURE})); | ||
| 72 |
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49462 | if (memAddress.empty()) |
| 73 | 40899 | memAddress.push(address); | |
| 74 | else | ||
| 75 | 8563 | memAddress.top() = address; | |
| 76 | 49462 | } | |
| 77 | |||
| 78 | /** | ||
| 79 | * Push a new address to the stack | ||
| 80 | * | ||
| 81 | * @param address Address to push | ||
| 82 | */ | ||
| 83 | 24 | void SymbolTableEntry::pushAddress(llvm::Value *address) { | |
| 84 |
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24 | assert(address != nullptr); |
| 85 | 24 | memAddress.push(address); | |
| 86 | 24 | } | |
| 87 | |||
| 88 | /** | ||
| 89 | * Remove the last address from the stack | ||
| 90 | */ | ||
| 91 | 24 | void SymbolTableEntry::popAddress() { | |
| 92 |
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24 | assert(!memAddress.empty()); |
| 93 | 24 | memAddress.pop(); | |
| 94 | 24 | } | |
| 95 | |||
| 96 | /** | ||
| 97 | * Check if this symbol is a struct field | ||
| 98 | * | ||
| 99 | * @return Struct field or not | ||
| 100 | */ | ||
| 101 | 16387 | bool SymbolTableEntry::isField() const { | |
| 102 |
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16387 | return scope->type == ScopeType::STRUCT && orderIndex < scope->getFieldCount() && !anonymous; |
| 103 | } | ||
| 104 | |||
| 105 | /** | ||
| 106 | * Check if this symbol is a function/procedure definition | ||
| 107 | * | ||
| 108 | * @return Function/procedure or not | ||
| 109 | */ | ||
| 110 | ✗ | bool SymbolTableEntry::isFunctionOrProcedure() const { | |
| 111 | ✗ | return scope->type == ScopeType::GLOBAL && qualType.isOneOf({TY_FUNCTION, TY_PROCEDURE}); | |
| 112 | } | ||
| 113 | |||
| 114 | /** | ||
| 115 | * Check if this symbol is a method definition | ||
| 116 | * | ||
| 117 | * @return Method or not | ||
| 118 | */ | ||
| 119 | ✗ | bool SymbolTableEntry::isMethod() const { | |
| 120 | ✗ | return scope->type == ScopeType::STRUCT && !isField() && qualType.isOneOf({TY_FUNCTION, TY_PROCEDURE}); | |
| 121 | } | ||
| 122 | |||
| 123 | /** | ||
| 124 | * Stringify the current symbol to a human-readable form. Used to dump whole symbol tables with their contents. | ||
| 125 | * | ||
| 126 | * Example: | ||
| 127 | * { | ||
| 128 | * "name": "testIden", | ||
| 129 | * "type": "int[]*", | ||
| 130 | * "orderIndex": 4, | ||
| 131 | * "state": "initialized", | ||
| 132 | * "qualifiers: [ | ||
| 133 | * "const": true, | ||
| 134 | * "signed": false | ||
| 135 | * ], | ||
| 136 | * "isGlobal": false, | ||
| 137 | * "isVolatile": false | ||
| 138 | * } | ||
| 139 | * | ||
| 140 | * @return Symbol table entry as a JSON object | ||
| 141 | */ | ||
| 142 | 168182 | nlohmann::ordered_json SymbolTableEntry::toJSON() const { | |
| 143 | 168182 | nlohmann::json result; | |
| 144 |
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168182 | result["name"] = name; |
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168182 | result["type"] = qualType.getName(true); |
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168182 | result["codeLoc"] = declNode->codeLoc.toString(); |
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168182 | result["orderIndex"] = orderIndex; |
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168182 | result["state"] = lifecycle.getCurrentStateName(); |
| 149 |
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168182 | result["isGlobal"] = global; |
| 150 |
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168182 | result["isVolatile"] = isVolatile; |
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336364 | return result; |
| 152 | 168182 | } | |
| 153 | |||
| 154 | } // namespace spice::compiler | ||
| 155 |