A tool for deriving PKG packet encryption keys for ps4 written in c++
| 1 | #pragma once |
| 2 | |
| 3 | #include <cstdint> |
| 4 | #include <memory> |
| 5 | #include <sstream> |
| 6 | #include <string> |
| 7 | #include <vector> |
| 8 | |
| 9 | namespace ShadPKG::Decompiler::Analysis { |
| 10 | class Type; |
| 11 | } |
| 12 | |
| 13 | namespace ShadPKG::Decompiler::AST { |
| 14 | |
| 15 | // ╔═══════════════════════════════════════════════════════════════════════════╗ |
| 16 | // ║ FORWARD DECLARATIONS ║ |
| 17 | // ╚═══════════════════════════════════════════════════════════════════════════╝ |
| 18 | |
| 19 | class ASTVisitor; |
| 20 | |
| 21 | // ╔═══════════════════════════════════════════════════════════════════════════╗ |
| 22 | // ║ BASE AST NODE ║ |
| 23 | // ╚═══════════════════════════════════════════════════════════════════════════╝ |
| 24 | |
| 25 | class ASTNode { |
| 26 | public: |
| 27 | virtual ~ASTNode() = default; |
| 28 | virtual void accept(ASTVisitor *visitor) = 0; |
| 29 | |
| 30 | uint64_t sourceAddress = 0; // Original instruction address for debugging |
| 31 | }; |
| 32 | |
| 33 | // ╔═══════════════════════════════════════════════════════════════════════════╗ |
| 34 | // ║ EXPRESSION HIERARCHY ║ |
| 35 | // ║ ║ |
| 36 | // ║ Expression ║ |
| 37 | // ║ ├── ConstantExpr (42, 0xFF, "string") ║ |
| 38 | // ║ ├── VariableExpr (var_4, rax) ║ |
| 39 | // ║ ├── BinaryExpr (a + b, a > b, a && b) ║ |
| 40 | // ║ ├── UnaryExpr (!a, -a, ~a) ║ |
| 41 | // ║ ├── CallExpr (func(args...)) ║ |
| 42 | // ║ └── MemoryExpr (*ptr, arr[i]) ║ |
| 43 | // ╚═══════════════════════════════════════════════════════════════════════════╝ |
| 44 | |
| 45 | class Expression : public ASTNode { |
| 46 | public: |
| 47 | enum class Type { |
| 48 | Unknown, |
| 49 | Int8, |
| 50 | Int16, |
| 51 | Int32, |
| 52 | Int64, |
| 53 | UInt8, |
| 54 | UInt16, |
| 55 | UInt32, |
| 56 | UInt64, |
| 57 | Float, |
| 58 | Double, |
| 59 | Pointer, |
| 60 | Boolean |
| 61 | }; |
| 62 | |
| 63 | Type resultType = Type::Unknown; |
| 64 | |
| 65 | virtual std::string toString() const = 0; |
| 66 | }; |
| 67 | |
| 68 | // ───────────────────────────────────────────────────────────────────────────── |
| 69 | // ConstantExpr: Literal values (42, 0xFF, 3.14) |
| 70 | // ───────────────────────────────────────────────────────────────────────────── |
| 71 | |
| 72 | class ConstantExpr : public Expression { |
| 73 | public: |
| 74 | enum class Kind { Integer, Float, String }; |
| 75 | |
| 76 | Kind kind = Kind::Integer; |
| 77 | int64_t intValue = 0; |
| 78 | double floatValue = 0.0; |
| 79 | std::string strValue; |
| 80 | bool isHex = false; |
| 81 | |
| 82 | ConstantExpr(int64_t val, bool hex = false) |
| 83 | : kind(Kind::Integer), intValue(val), isHex(hex) { |
| 84 | resultType = Type::Int64; |
| 85 | } |
| 86 | |
| 87 | ConstantExpr(double val) : kind(Kind::Float), floatValue(val) { |
| 88 | resultType = Type::Double; |
| 89 | } |
| 90 | |
| 91 | ConstantExpr(const std::string &val) : kind(Kind::String), strValue(val) { |
| 92 | resultType = Type::Unknown; // String literal type? Pointer usually. |
| 93 | } |
| 94 | |
| 95 | void accept(ASTVisitor *visitor) override; |
| 96 | |
| 97 | std::string toString() const override { |
| 98 | std::stringstream ss; |
| 99 | if (kind == Kind::Integer) { |
| 100 | if (isHex) |
| 101 | ss << "0x" << std::hex << intValue; |
| 102 | else |
| 103 | ss << std::dec << intValue; |
| 104 | } else if (kind == Kind::Float) { |
| 105 | ss << floatValue; |
| 106 | } else { |
| 107 | ss << "\"" << strValue << "\""; |
| 108 | } |
| 109 | return ss.str(); |
| 110 | } |
| 111 | }; |
| 112 | |
| 113 | // ───────────────────────────────────────────────────────────────────────────── |
| 114 | // VariableExpr: Named variables (var_4, param_0, rax) |
| 115 | // ───────────────────────────────────────────────────────────────────────────── |
| 116 | |
| 117 | class VariableExpr : public Expression { |
| 118 | public: |
| 119 | std::string name; |
| 120 | bool isParameter = false; |
| 121 | int stackOffset = 0; // Original [rbp - offset] for reference |
| 122 | |
| 123 | explicit VariableExpr(const std::string &n) : name(n) {} |
| 124 | |
| 125 | void accept(ASTVisitor *visitor) override; |
| 126 | |
| 127 | std::string toString() const override { return name; } |
| 128 | }; |
| 129 | |
| 130 | // ───────────────────────────────────────────────────────────────────────────── |
| 131 | // BinaryExpr: Two-operand expressions (a + b, a > b) |
| 132 | // ───────────────────────────────────────────────────────────────────────────── |
| 133 | |
| 134 | class BinaryExpr : public Expression { |
| 135 | public: |
| 136 | enum class Op { |
| 137 | // Arithmetic |
| 138 | Add, |
| 139 | Sub, |
| 140 | Mul, |
| 141 | Div, |
| 142 | Mod, |
| 143 | // Bitwise |
| 144 | And, |
| 145 | Or, |
| 146 | Xor, |
| 147 | Shl, |
| 148 | Shr, |
| 149 | // Comparison |
| 150 | Eq, |
| 151 | Ne, |
| 152 | Lt, |
| 153 | Le, |
| 154 | Gt, |
| 155 | Ge, |
| 156 | // Logical |
| 157 | LogicalAnd, |
| 158 | LogicalOr, |
| 159 | // Assignment |
| 160 | Assign |
| 161 | }; |
| 162 | |
| 163 | Op op; |
| 164 | std::shared_ptr<Expression> left; |
| 165 | std::shared_ptr<Expression> right; |
| 166 | |
| 167 | BinaryExpr(Op o, std::shared_ptr<Expression> l, std::shared_ptr<Expression> r) |
| 168 | : op(o), left(std::move(l)), right(std::move(r)) {} |
| 169 | |
| 170 | void accept(ASTVisitor *visitor) override; |
| 171 | |
| 172 | static std::string opToString(Op o) { |
| 173 | switch (o) { |
| 174 | case Op::Add: |
| 175 | return "+"; |
| 176 | case Op::Sub: |
| 177 | return "-"; |
| 178 | case Op::Mul: |
| 179 | return "*"; |
| 180 | case Op::Div: |
| 181 | return "/"; |
| 182 | case Op::Mod: |
| 183 | return "%"; |
| 184 | case Op::And: |
| 185 | return "&"; |
| 186 | case Op::Or: |
| 187 | return "|"; |
| 188 | case Op::Xor: |
| 189 | return "^"; |
| 190 | case Op::Shl: |
| 191 | return "<<"; |
| 192 | case Op::Shr: |
| 193 | return ">>"; |
| 194 | case Op::Eq: |
| 195 | return "=="; |
| 196 | case Op::Ne: |
| 197 | return "!="; |
| 198 | case Op::Lt: |
| 199 | return "<"; |
| 200 | case Op::Le: |
| 201 | return "<="; |
| 202 | case Op::Gt: |
| 203 | return ">"; |
| 204 | case Op::Ge: |
| 205 | return ">="; |
| 206 | case Op::LogicalAnd: |
| 207 | return "&&"; |
| 208 | case Op::LogicalOr: |
| 209 | return "||"; |
| 210 | case Op::Assign: |
| 211 | return "="; |
| 212 | } |
| 213 | return "?"; |
| 214 | } |
| 215 | |
| 216 | std::string toString() const override { |
| 217 | return "(" + left->toString() + " " + opToString(op) + " " + |
| 218 | right->toString() + ")"; |
| 219 | } |
| 220 | }; |
| 221 | |
| 222 | // ───────────────────────────────────────────────────────────────────────────── |
| 223 | // UnaryExpr: Single-operand expressions (!a, -a, ~a) |
| 224 | // ───────────────────────────────────────────────────────────────────────────── |
| 225 | |
| 226 | class UnaryExpr : public Expression { |
| 227 | public: |
| 228 | enum class Op { |
| 229 | Negate, // -a |
| 230 | Not, // !a |
| 231 | BitwiseNot, // ~a |
| 232 | Deref, // *a |
| 233 | AddressOf // &a |
| 234 | }; |
| 235 | |
| 236 | Op op; |
| 237 | std::shared_ptr<Expression> operand; |
| 238 | |
| 239 | UnaryExpr(Op o, std::shared_ptr<Expression> expr) |
| 240 | : op(o), operand(std::move(expr)) {} |
| 241 | |
| 242 | void accept(ASTVisitor *visitor) override; |
| 243 | |
| 244 | static std::string opToString(Op o) { |
| 245 | switch (o) { |
| 246 | case Op::Negate: |
| 247 | return "-"; |
| 248 | case Op::Not: |
| 249 | return "!"; |
| 250 | case Op::BitwiseNot: |
| 251 | return "~"; |
| 252 | case Op::Deref: |
| 253 | return "*"; |
| 254 | case Op::AddressOf: |
| 255 | return "&"; |
| 256 | } |
| 257 | return "?"; |
| 258 | } |
| 259 | |
| 260 | std::string toString() const override { |
| 261 | return opToString(op) + operand->toString(); |
| 262 | } |
| 263 | }; |
| 264 | |
| 265 | // ───────────────────────────────────────────────────────────────────────────── |
| 266 | // CallExpr: Function calls (func(a, b, c)) |
| 267 | // ───────────────────────────────────────────────────────────────────────────── |
| 268 | |
| 269 | class CallExpr : public Expression { |
| 270 | public: |
| 271 | std::string functionName; |
| 272 | uint64_t targetAddress = 0; |
| 273 | std::vector<std::shared_ptr<Expression>> arguments; |
| 274 | |
| 275 | explicit CallExpr(const std::string &name) : functionName(name) {} |
| 276 | explicit CallExpr(uint64_t addr) : targetAddress(addr) { |
| 277 | std::stringstream ss; |
| 278 | ss << "sub_" << std::hex << addr; |
| 279 | functionName = ss.str(); |
| 280 | } |
| 281 | |
| 282 | void accept(ASTVisitor *visitor) override; |
| 283 | |
| 284 | std::string toString() const override { |
| 285 | std::string result = functionName + "("; |
| 286 | for (size_t i = 0; i < arguments.size(); ++i) { |
| 287 | if (i > 0) |
| 288 | result += ", "; |
| 289 | result += arguments[i]->toString(); |
| 290 | } |
| 291 | return result + ")"; |
| 292 | } |
| 293 | }; |
| 294 | |
| 295 | // ───────────────────────────────────────────────────────────────────────────── |
| 296 | // MemoryExpr: Memory access (*ptr, base[offset]) |
| 297 | // ───────────────────────────────────────────────────────────────────────────── |
| 298 | |
| 299 | class MemoryExpr : public Expression { |
| 300 | public: |
| 301 | std::shared_ptr<Expression> base; |
| 302 | std::shared_ptr<Expression> offset; // nullptr if just *base |
| 303 | int scale = 1; // For array indexing: base + offset * scale |
| 304 | |
| 305 | explicit MemoryExpr(std::shared_ptr<Expression> b) : base(std::move(b)) {} |
| 306 | |
| 307 | void accept(ASTVisitor *visitor) override; |
| 308 | |
| 309 | std::string toString() const override { |
| 310 | if (offset) { |
| 311 | return base->toString() + "[" + offset->toString() + "]"; |
| 312 | } |
| 313 | return "*" + base->toString(); |
| 314 | } |
| 315 | }; |
| 316 | |
| 317 | // ───────────────────────────────────────────────────────────────────────────── |
| 318 | // MemberAccessExpr: Struct member access (base->member) |
| 319 | // ───────────────────────────────────────────────────────────────────────────── |
| 320 | |
| 321 | class MemberAccessExpr : public Expression { |
| 322 | public: |
| 323 | std::shared_ptr<Expression> base; // The pointer or struct |
| 324 | std::string memberName; |
| 325 | int offset; // Debug info: the offset being accessed |
| 326 | |
| 327 | MemberAccessExpr(std::shared_ptr<Expression> b, const std::string &m, int off) |
| 328 | : base(std::move(b)), memberName(m), offset(off) {} |
| 329 | |
| 330 | void accept(ASTVisitor *visitor) override; |
| 331 | |
| 332 | std::string toString() const override { |
| 333 | // Assuming pointer access (->) mostly for this task. |
| 334 | // If base is not a pointer, it should be dot (.). |
| 335 | // Logic can be refined in Codegen. |
| 336 | return base->toString() + "->" + memberName; |
| 337 | } |
| 338 | }; |
| 339 | |
| 340 | // ───────────────────────────────────────────────────────────────────────────── |
| 341 | // CastExpr: Explicit Type Cast ( (int64_t)var ) |
| 342 | // ───────────────────────────────────────────────────────────────────────────── |
| 343 | |
| 344 | class CastExpr : public Expression { |
| 345 | public: |
| 346 | std::shared_ptr<Expression> expr; |
| 347 | std::string targetType; |
| 348 | |
| 349 | CastExpr(std::shared_ptr<Expression> e, const std::string &type) |
| 350 | : expr(std::move(e)), targetType(type) {} |
| 351 | |
| 352 | void accept(ASTVisitor *visitor) override; |
| 353 | |
| 354 | std::string toString() const override { |
| 355 | return "(" + targetType + ")" + expr->toString(); |
| 356 | } |
| 357 | }; |
| 358 | |
| 359 | // ╔══════════════════════════════════════════════════════════════════════════╗ |
| 360 | // ║ STATEMENT HIERARCHY ║ |
| 361 | // ╠══════════════════════════════════════════════════════════════════════════╣ |
| 362 | // ║ Statement ║ |
| 363 | // ║ ├── CompoundStatement { stmt1; stmt2; ... } ║ |
| 364 | // ║ ├── ExpressionStatement expr; ║ |
| 365 | // ║ ├── IfStatement if (cond) { } else { } ║ |
| 366 | // ║ ├── WhileStatement while (cond) { } ║ |
| 367 | // ║ ├── DoWhileStatement do { } while (cond); ║ |
| 368 | // ║ ├── ForStatement for (init; cond; step) { } ║ |
| 369 | // ║ ├── ReturnStatement return expr; ║ |
| 370 | // ║ ├── BreakStatement break; ║ |
| 371 | // ║ ├── ContinueStatement continue; ║ |
| 372 | // ║ ├── GotoStatement goto label; (fallback for irreducible CFG) ║ |
| 373 | // ║ └── LabelStatement label: ║ |
| 374 | // ╚══════════════════════════════════════════════════════════════════════════╝ |
| 375 | |
| 376 | class Statement : public ASTNode { |
| 377 | public: |
| 378 | std::string comment; // Optional inline comment |
| 379 | }; |
| 380 | |
| 381 | // ───────────────────────────────────────────────────────────────────────────── |
| 382 | // CompoundStatement: Block of statements { ... } |
| 383 | // ───────────────────────────────────────────────────────────────────────────── |
| 384 | |
| 385 | class CompoundStatement : public Statement { |
| 386 | public: |
| 387 | std::vector<std::shared_ptr<Statement>> statements; |
| 388 | |
| 389 | void accept(ASTVisitor *visitor) override; |
| 390 | |
| 391 | void addStatement(std::shared_ptr<Statement> stmt) { |
| 392 | statements.push_back(std::move(stmt)); |
| 393 | } |
| 394 | }; |
| 395 | |
| 396 | // ───────────────────────────────────────────────────────────────────────────── |
| 397 | // ExpressionStatement: Expression as statement (x = 5;) |
| 398 | // ───────────────────────────────────────────────────────────────────────────── |
| 399 | |
| 400 | class ExpressionStatement : public Statement { |
| 401 | public: |
| 402 | std::shared_ptr<Expression> expression; |
| 403 | |
| 404 | explicit ExpressionStatement(std::shared_ptr<Expression> expr) |
| 405 | : expression(std::move(expr)) {} |
| 406 | |
| 407 | void accept(ASTVisitor *visitor) override; |
| 408 | }; |
| 409 | |
| 410 | // ───────────────────────────────────────────────────────────────────────────── |
| 411 | // IfStatement: if (condition) then-branch [else else-branch] |
| 412 | // ───────────────────────────────────────────────────────────────────────────── |
| 413 | |
| 414 | class IfStatement : public Statement { |
| 415 | public: |
| 416 | std::shared_ptr<Expression> condition; |
| 417 | std::shared_ptr<Statement> thenBranch; |
| 418 | std::shared_ptr<Statement> elseBranch; // nullptr if no else |
| 419 | |
| 420 | IfStatement(std::shared_ptr<Expression> cond, |
| 421 | std::shared_ptr<Statement> thenStmt, |
| 422 | std::shared_ptr<Statement> elseStmt = nullptr) |
| 423 | : condition(std::move(cond)), thenBranch(std::move(thenStmt)), |
| 424 | elseBranch(std::move(elseStmt)) {} |
| 425 | |
| 426 | void accept(ASTVisitor *visitor) override; |
| 427 | }; |
| 428 | |
| 429 | // ───────────────────────────────────────────────────────────────────────────── |
| 430 | // WhileStatement: while (condition) { body } |
| 431 | // ───────────────────────────────────────────────────────────────────────────── |
| 432 | |
| 433 | class WhileStatement : public Statement { |
| 434 | public: |
| 435 | std::shared_ptr<Expression> condition; |
| 436 | std::shared_ptr<Statement> body; |
| 437 | |
| 438 | WhileStatement(std::shared_ptr<Expression> cond, std::shared_ptr<Statement> b) |
| 439 | : condition(std::move(cond)), body(std::move(b)) {} |
| 440 | |
| 441 | void accept(ASTVisitor *visitor) override; |
| 442 | }; |
| 443 | |
| 444 | // ───────────────────────────────────────────────────────────────────────────── |
| 445 | // DoWhileStatement: do { body } while (condition); |
| 446 | // ───────────────────────────────────────────────────────────────────────────── |
| 447 | |
| 448 | class DoWhileStatement : public Statement { |
| 449 | public: |
| 450 | std::shared_ptr<Statement> body; |
| 451 | std::shared_ptr<Expression> condition; |
| 452 | |
| 453 | DoWhileStatement(std::shared_ptr<Statement> b, |
| 454 | std::shared_ptr<Expression> cond) |
| 455 | : body(std::move(b)), condition(std::move(cond)) {} |
| 456 | |
| 457 | void accept(ASTVisitor *visitor) override; |
| 458 | }; |
| 459 | |
| 460 | // ───────────────────────────────────────────────────────────────────────────── |
| 461 | // ForStatement: for (init; cond; step) { body } |
| 462 | // ───────────────────────────────────────────────────────────────────────────── |
| 463 | |
| 464 | class ForStatement : public Statement { |
| 465 | public: |
| 466 | std::shared_ptr<Expression> init; |
| 467 | std::shared_ptr<Expression> condition; |
| 468 | std::shared_ptr<Expression> step; |
| 469 | std::shared_ptr<Statement> body; |
| 470 | |
| 471 | void accept(ASTVisitor *visitor) override; |
| 472 | }; |
| 473 | |
| 474 | // ───────────────────────────────────────────────────────────────────────────── |
| 475 | // ReturnStatement: return [expr]; |
| 476 | // ───────────────────────────────────────────────────────────────────────────── |
| 477 | |
| 478 | class ReturnStatement : public Statement { |
| 479 | public: |
| 480 | std::shared_ptr<Expression> value; // nullptr for void return |
| 481 | |
| 482 | ReturnStatement() = default; |
| 483 | explicit ReturnStatement(std::shared_ptr<Expression> v) |
| 484 | : value(std::move(v)) {} |
| 485 | |
| 486 | void accept(ASTVisitor *visitor) override; |
| 487 | }; |
| 488 | |
| 489 | // ───────────────────────────────────────────────────────────────────────────── |
| 490 | // BreakStatement: break; |
| 491 | // ───────────────────────────────────────────────────────────────────────────── |
| 492 | |
| 493 | class BreakStatement : public Statement { |
| 494 | public: |
| 495 | void accept(ASTVisitor *visitor) override; |
| 496 | }; |
| 497 | |
| 498 | // ───────────────────────────────────────────────────────────────────────────── |
| 499 | // ContinueStatement: continue; |
| 500 | // ───────────────────────────────────────────────────────────────────────────── |
| 501 | |
| 502 | class ContinueStatement : public Statement { |
| 503 | public: |
| 504 | void accept(ASTVisitor *visitor) override; |
| 505 | }; |
| 506 | |
| 507 | // ───────────────────────────────────────────────────────────────────────────── |
| 508 | // GotoStatement: goto label; (fallback for irreducible control flow) |
| 509 | // ───────────────────────────────────────────────────────────────────────────── |
| 510 | |
| 511 | class GotoStatement : public Statement { |
| 512 | public: |
| 513 | std::string label; |
| 514 | uint64_t targetAddress = 0; |
| 515 | |
| 516 | explicit GotoStatement(const std::string &lbl) : label(lbl) {} |
| 517 | explicit GotoStatement(uint64_t addr) : targetAddress(addr) { |
| 518 | std::stringstream ss; |
| 519 | ss << "loc_" << std::hex << addr; |
| 520 | label = ss.str(); |
| 521 | } |
| 522 | |
| 523 | void accept(ASTVisitor *visitor) override; |
| 524 | }; |
| 525 | |
| 526 | // ───────────────────────────────────────────────────────────────────────────── |
| 527 | // LabelStatement: label: |
| 528 | // ───────────────────────────────────────────────────────────────────────────── |
| 529 | |
| 530 | class LabelStatement : public Statement { |
| 531 | public: |
| 532 | std::string name; |
| 533 | uint64_t address = 0; |
| 534 | |
| 535 | explicit LabelStatement(const std::string &n) : name(n) {} |
| 536 | explicit LabelStatement(uint64_t addr) : address(addr) { |
| 537 | std::stringstream ss; |
| 538 | ss << "loc_" << std::hex << addr; |
| 539 | name = ss.str(); |
| 540 | } |
| 541 | |
| 542 | void accept(ASTVisitor *visitor) override; |
| 543 | }; |
| 544 | |
| 545 | // ╔═══════════════════════════════════════════════════════════════════════════╗ |
| 546 | // ║ LOCAL VARIABLE ║ |
| 547 | // ╚═══════════════════════════════════════════════════════════════════════════╝ |
| 548 | |
| 549 | struct LocalVariable { |
| 550 | std::string name; |
| 551 | Expression::Type type = |
| 552 | Expression::Type::Int32; // Legacy enum for simple cases |
| 553 | // NEW: Advanced Type System Integration |
| 554 | std::shared_ptr<ShadPKG::Decompiler::Analysis::Type> complexType; |
| 555 | |
| 556 | int stackOffset = 0; // Original [rbp - offset] |
| 557 | int size = 4; // Size in bytes |
| 558 | bool isParameter = false; |
| 559 | int paramIndex = -1; // If parameter, which one (0, 1, 2...) |
| 560 | |
| 561 | // If complexType is set, use it. Otherwise fallback to enum. |
| 562 | std::string getTypeName() const; |
| 563 | }; |
| 564 | |
| 565 | // ╔═══════════════════════════════════════════════════════════════════════════╗ |
| 566 | // ║ FUNCTION AST ║ |
| 567 | // ╚═══════════════════════════════════════════════════════════════════════════╝ |
| 568 | |
| 569 | class FunctionAST { |
| 570 | public: |
| 571 | std::string name; |
| 572 | uint64_t address = 0; |
| 573 | std::string returnType = "void"; |
| 574 | |
| 575 | std::vector<LocalVariable> parameters; |
| 576 | std::vector<LocalVariable> locals; |
| 577 | std::shared_ptr<CompoundStatement> body; |
| 578 | |
| 579 | FunctionAST() : body(std::make_shared<CompoundStatement>()) {} |
| 580 | }; |
| 581 | |
| 582 | // ╔═══════════════════════════════════════════════════════════════════════════╗ |
| 583 | // ║ AST VISITOR ║ |
| 584 | // ║ ║ |
| 585 | // ║ Visitor pattern for traversing AST without modifying node classes. ║ |
| 586 | // ║ Subclass and override visit() methods to implement code generation, ║ |
| 587 | // ║ optimization passes, or analysis. ║ |
| 588 | // ╚═══════════════════════════════════════════════════════════════════════════╝ |
| 589 | |
| 590 | // ───────────────────────────────────────────────────────────────────────────── |
| 591 | // CaseStmt: case val1: case val2: ... body |
| 592 | // ───────────────────────────────────────────────────────────────────────────── |
| 593 | |
| 594 | class CaseStmt : public Statement { |
| 595 | public: |
| 596 | std::vector<int64_t> values; // Multiple values for stacked cases |
| 597 | bool isDefault = false; |
| 598 | std::shared_ptr<CompoundStatement> body; |
| 599 | |
| 600 | CaseStmt() : body(std::make_shared<CompoundStatement>()) {} |
| 601 | |
| 602 | void accept(ASTVisitor *visitor) override; |
| 603 | }; |
| 604 | |
| 605 | // ───────────────────────────────────────────────────────────────────────────── |
| 606 | // SwitchStmt: switch (expr) { cases... } |
| 607 | // ───────────────────────────────────────────────────────────────────────────── |
| 608 | |
| 609 | class SwitchStmt : public Statement { |
| 610 | public: |
| 611 | std::shared_ptr<Expression> condition; |
| 612 | std::vector<std::shared_ptr<CaseStmt>> cases; |
| 613 | |
| 614 | explicit SwitchStmt(std::shared_ptr<Expression> cond) |
| 615 | : condition(std::move(cond)) {} |
| 616 | |
| 617 | void accept(ASTVisitor *visitor) override; |
| 618 | }; |
| 619 | |
| 620 | class ASTVisitor { |
| 621 | public: |
| 622 | virtual ~ASTVisitor() = default; |
| 623 | |
| 624 | // Expressions |
| 625 | virtual void visit(ConstantExpr *node) = 0; |
| 626 | virtual void visit(VariableExpr *node) = 0; |
| 627 | virtual void visit(BinaryExpr *node) = 0; |
| 628 | virtual void visit(UnaryExpr *node) = 0; |
| 629 | virtual void visit(CallExpr *node) = 0; |
| 630 | virtual void visit(MemoryExpr *node) = 0; |
| 631 | virtual void visit(MemberAccessExpr *node) = 0; |
| 632 | virtual void visit(CastExpr *node) = 0; // NEW |
| 633 | |
| 634 | // Statements |
| 635 | virtual void visit(CompoundStatement *node) = 0; |
| 636 | virtual void visit(ExpressionStatement *node) = 0; |
| 637 | virtual void visit(IfStatement *node) = 0; |
| 638 | virtual void visit(WhileStatement *node) = 0; |
| 639 | virtual void visit(DoWhileStatement *node) = 0; |
| 640 | virtual void visit(ForStatement *node) = 0; |
| 641 | virtual void visit(ReturnStatement *node) = 0; |
| 642 | virtual void visit(BreakStatement *node) = 0; |
| 643 | virtual void visit(ContinueStatement *node) = 0; |
| 644 | virtual void visit(GotoStatement *node) = 0; |
| 645 | virtual void visit(LabelStatement *node) = 0; |
| 646 | virtual void visit(CaseStmt *node) = 0; // NEW |
| 647 | virtual void visit(SwitchStmt *node) = 0; // NEW |
| 648 | }; |
| 649 | |
| 650 | // ╔═══════════════════════════════════════════════════════════════════════════╗ |
| 651 | // ║ VISITOR ACCEPT IMPLEMENTATIONS ║ |
| 652 | // ╚═══════════════════════════════════════════════════════════════════════════╝ |
| 653 | |
| 654 | inline void ConstantExpr::accept(ASTVisitor *v) { v->visit(this); } |
| 655 | inline void VariableExpr::accept(ASTVisitor *v) { v->visit(this); } |
| 656 | inline void BinaryExpr::accept(ASTVisitor *v) { v->visit(this); } |
| 657 | inline void UnaryExpr::accept(ASTVisitor *v) { v->visit(this); } |
| 658 | inline void CallExpr::accept(ASTVisitor *v) { v->visit(this); } |
| 659 | inline void MemoryExpr::accept(ASTVisitor *v) { v->visit(this); } |
| 660 | inline void MemberAccessExpr::accept(ASTVisitor *v) { v->visit(this); } // NEW |
| 661 | inline void CastExpr::accept(ASTVisitor *v) { v->visit(this); } // NEW |
| 662 | inline void CompoundStatement::accept(ASTVisitor *v) { v->visit(this); } |
| 663 | inline void ExpressionStatement::accept(ASTVisitor *v) { v->visit(this); } |
| 664 | inline void IfStatement::accept(ASTVisitor *v) { v->visit(this); } |
| 665 | inline void WhileStatement::accept(ASTVisitor *v) { v->visit(this); } |
| 666 | inline void DoWhileStatement::accept(ASTVisitor *v) { v->visit(this); } |
| 667 | inline void ForStatement::accept(ASTVisitor *v) { v->visit(this); } |
| 668 | inline void ReturnStatement::accept(ASTVisitor *v) { v->visit(this); } |
| 669 | inline void BreakStatement::accept(ASTVisitor *v) { v->visit(this); } |
| 670 | inline void ContinueStatement::accept(ASTVisitor *v) { v->visit(this); } |
| 671 | inline void GotoStatement::accept(ASTVisitor *v) { v->visit(this); } |
| 672 | inline void LabelStatement::accept(ASTVisitor *v) { v->visit(this); } |
| 673 | inline void CaseStmt::accept(ASTVisitor *v) { v->visit(this); } |
| 674 | inline void SwitchStmt::accept(ASTVisitor *v) { v->visit(this); } |
| 675 | |
| 676 | } // namespace ShadPKG::Decompiler::AST |
| 677 |