Use an abstract method instead of a bunch of ifs

src/Parser.php

@@ -35,21 +35,7 @@ public function parse(string $filename, Schema $schema, bool $ignoreFirstLine =
             $line = str_getcsv($line);
 
             foreach ($schema->columnDefinitions() as $column => $definition) {
-                $value = $line[$column - 1];
-
-                if ($definition->type()->isBoolean()) {
-                    $value = (bool) $value;
-                }
-
-                if ($definition->type()->isInteger()) {
-                    $value = (int) $value;
-                }
-
-                if ($definition->type()->isFloat()) {
-                    $value = (float) $value;
-                }
-
-                $data[$definition->name()] = $value;
+                $data[$definition->name()] = $definition->type()->cast($line[$column - 1] ?? '');
             }
 
             yield $data;

src/schema/type/BooleanType.php

@@ -20,4 +20,9 @@ public function isBoolean(): bool
     {
         return true;
     }
+
+    public function cast(string $value): bool
+    {
+        return (bool) $value;
+    }
 }

src/schema/type/FloatType.php

@@ -20,4 +20,9 @@ public function isFloat(): bool
     {
         return true;
     }
+
+    public function cast(string $value): float
+    {
+        return (float) $value;
+    }
 }

src/schema/type/IntegerType.php

@@ -20,4 +20,9 @@ public function isInteger(): bool
     {
         return true;
     }
+
+    public function cast(string $value): int
+    {
+        return (int) $value;
+    }
 }

src/schema/type/StringType.php

@@ -20,4 +20,9 @@ public function isString(): bool
     {
         return true;
     }
+
+    public function cast(string $value): string
+    {
+        return $value;
+    }
 }

src/schema/type/Type.php

@@ -59,4 +59,6 @@ public function isString(): bool
     {
         return false;
     }
+
+    abstract public function cast(string $value): mixed;
 }