Add filter to load an atribution for saving memories

m3m0r7 · m3m0r7 · commit 9dbf9383ab91 · 2019-04-30T15:56:39.000+09:00
diff --git a/src/Core/JVM/Parameters/Runtime.php b/src/Core/JVM/Parameters/Runtime.php
@@ -21,6 +21,12 @@ final class Runtime
     const LOG_PATH = 'php://stderr';
     const LOG_LEVEL = Logger::EMERGENCY;
 
+    const LOAD_ATTRIBUTES = [
+        'Code',
+        'Exceptions',
+        'SourceFile',
+    ];
+
     const PHP_PACKAGES_MAPS = [
         'String' => '_String',
         'Object' => '_Object',
diff --git a/src/Kernel/Attributes/AttributeInfo.php b/src/Kernel/Attributes/AttributeInfo.php
@@ -1,6 +1,8 @@
 <?php
 namespace PHPJava\Kernel\Attributes;
 
+use PHPJava\Core\JVM\Parameters\GlobalOptions;
+use PHPJava\Core\JVM\Parameters\Runtime;
 use PHPJava\Exceptions\NotImplementedException;
 use PHPJava\Exceptions\ValidatorException;
 use PHPJava\Kernel\Structures\_Methodref;
@@ -19,12 +21,21 @@ final class AttributeInfo implements AttributeInterface
 
     public function execute(): void
     {
+        $loadAttributes = GlobalOptions::get('load_attributes') ?? Runtime::LOAD_ATTRIBUTES;
+
         $this->attributeNameIndex = $this->readUnsignedShort();
         $this->attributeLength = $this->readUnsignedInt();
         $cpInfo = $this->getConstantPool();
         $currentOffset = $this->getOffset();
 
         $attributeName = $cpInfo[$this->attributeNameIndex]->getString();
+
+        if ($loadAttributes !== null && !in_array($attributeName, $loadAttributes, true)) {
+            $this->read($this->attributeLength);
+            $this->getDebugTool()->getLogger()->debug('Skip to load an attribute: ' . $attributeName);
+            return;
+        }
+
         $classAttributeName = '\\PHPJava\\Kernel\\Attributes\\' . $attributeName . 'Attribute';
         $this->getDebugTool()->getLogger()->debug('Load an attribute: ' . $attributeName);
         $this->attributeData = new $classAttributeName($this->reader);
diff --git a/src/Kernel/Structures/_LineNumberTable.php b/src/Kernel/Structures/_LineNumberTable.php
@@ -23,7 +23,7 @@ public function getStartPc()
     {
         return $this->startPc;
     }
-    
+
     public function getLineNumber()
     {
         return $this->lineNumber;

Original file line number	Diff line number	Diff line change
`@@ -23,7 +23,7 @@ public function getStartPc()`
`23`	`23`	`{`
`24`	`24`	`return $this->startPc;`
`25`	`25`	`}`
`26`		`-`
	`26`	`+`
`27`	`27`	`public function getLineNumber()`
`28`	`28`	`{`
`29`	`29`	`return $this->lineNumber;`