| 1: | <?php declare(strict_types = 1); |
| 2: | |
| 3: | namespace PHPStan\Analyser; |
| 4: | |
| 5: | use PhpParser\Node\Scalar\LNumber; |
| 6: | use PhpParser\Node\Stmt; |
| 7: | |
| 8: | |
| 9: | class StatementResult |
| 10: | { |
| 11: | |
| 12: | |
| 13: | |
| 14: | |
| 15: | |
| 16: | public function __construct( |
| 17: | private MutatingScope $scope, |
| 18: | private bool $hasYield, |
| 19: | private bool $isAlwaysTerminating, |
| 20: | private array $exitPoints, |
| 21: | private array $throwPoints, |
| 22: | ) |
| 23: | { |
| 24: | } |
| 25: | |
| 26: | public function getScope(): MutatingScope |
| 27: | { |
| 28: | return $this->scope; |
| 29: | } |
| 30: | |
| 31: | public function hasYield(): bool |
| 32: | { |
| 33: | return $this->hasYield; |
| 34: | } |
| 35: | |
| 36: | public function isAlwaysTerminating(): bool |
| 37: | { |
| 38: | return $this->isAlwaysTerminating; |
| 39: | } |
| 40: | |
| 41: | public function filterOutLoopExitPoints(): self |
| 42: | { |
| 43: | if (!$this->isAlwaysTerminating) { |
| 44: | return $this; |
| 45: | } |
| 46: | |
| 47: | foreach ($this->exitPoints as $exitPoint) { |
| 48: | $statement = $exitPoint->getStatement(); |
| 49: | if (!$statement instanceof Stmt\Break_ && !$statement instanceof Stmt\Continue_) { |
| 50: | continue; |
| 51: | } |
| 52: | |
| 53: | $num = $statement->num; |
| 54: | if (!$num instanceof LNumber) { |
| 55: | return new self($this->scope, $this->hasYield, false, $this->exitPoints, $this->throwPoints); |
| 56: | } |
| 57: | |
| 58: | if ($num->value !== 1) { |
| 59: | continue; |
| 60: | } |
| 61: | |
| 62: | return new self($this->scope, $this->hasYield, false, $this->exitPoints, $this->throwPoints); |
| 63: | } |
| 64: | |
| 65: | return $this; |
| 66: | } |
| 67: | |
| 68: | |
| 69: | |
| 70: | |
| 71: | public function getExitPoints(): array |
| 72: | { |
| 73: | return $this->exitPoints; |
| 74: | } |
| 75: | |
| 76: | |
| 77: | |
| 78: | |
| 79: | |
| 80: | public function getExitPointsByType(string $stmtClass): array |
| 81: | { |
| 82: | $exitPoints = []; |
| 83: | foreach ($this->exitPoints as $exitPoint) { |
| 84: | $statement = $exitPoint->getStatement(); |
| 85: | if (!$statement instanceof $stmtClass) { |
| 86: | continue; |
| 87: | } |
| 88: | |
| 89: | $value = $statement->num; |
| 90: | if ($value === null) { |
| 91: | $exitPoints[] = $exitPoint; |
| 92: | continue; |
| 93: | } |
| 94: | |
| 95: | if (!$value instanceof LNumber) { |
| 96: | $exitPoints[] = $exitPoint; |
| 97: | continue; |
| 98: | } |
| 99: | |
| 100: | $value = $value->value; |
| 101: | if ($value !== 1) { |
| 102: | continue; |
| 103: | } |
| 104: | |
| 105: | $exitPoints[] = $exitPoint; |
| 106: | } |
| 107: | |
| 108: | return $exitPoints; |
| 109: | } |
| 110: | |
| 111: | |
| 112: | |
| 113: | |
| 114: | public function getExitPointsForOuterLoop(): array |
| 115: | { |
| 116: | $exitPoints = []; |
| 117: | foreach ($this->exitPoints as $exitPoint) { |
| 118: | $statement = $exitPoint->getStatement(); |
| 119: | if (!$statement instanceof Stmt\Continue_ && !$statement instanceof Stmt\Break_) { |
| 120: | $exitPoints[] = $exitPoint; |
| 121: | continue; |
| 122: | } |
| 123: | if ($statement->num === null) { |
| 124: | continue; |
| 125: | } |
| 126: | if (!$statement->num instanceof LNumber) { |
| 127: | continue; |
| 128: | } |
| 129: | $value = $statement->num->value; |
| 130: | if ($value === 1) { |
| 131: | continue; |
| 132: | } |
| 133: | |
| 134: | $newNode = null; |
| 135: | if ($value > 2) { |
| 136: | $newNode = new LNumber($value - 1); |
| 137: | } |
| 138: | if ($statement instanceof Stmt\Continue_) { |
| 139: | $newStatement = new Stmt\Continue_($newNode); |
| 140: | } else { |
| 141: | $newStatement = new Stmt\Break_($newNode); |
| 142: | } |
| 143: | |
| 144: | $exitPoints[] = new StatementExitPoint($newStatement, $exitPoint->getScope()); |
| 145: | } |
| 146: | |
| 147: | return $exitPoints; |
| 148: | } |
| 149: | |
| 150: | |
| 151: | |
| 152: | |
| 153: | public function getThrowPoints(): array |
| 154: | { |
| 155: | return $this->throwPoints; |
| 156: | } |
| 157: | |
| 158: | } |
| 159: | |