<?php

declare(strict_types=1);

namespace PHPJava\Compiler\Builder\Segments;

use PHPJava\Compiler\Builder\Method;

use PHPJava\Compiler\Builder\Segments\Attributes\Attributes;

use PHPJava\Compiler\Builder\Segments\Attributes\AttributesCount;

use PHPJava\Compiler\Builder\Structures\Info\Utf8Info;

use PHPJava\Exceptions\CompilerException;

class Methods extends AbstractSegment implements SegmentInterface

{

public function build(): void

{

foreach ($this->classFileStructureBuilder->getMethods() as $method) {

/**

* @var Method $method

*/

$name = $this->classFileStructureBuilder->getConstantPool()[$method->getNameIndex()];

$descriptor = $this->classFileStructureBuilder->getConstantPool()[$method->getDescriptorIndex()];

if (!($name instanceof Utf8Info)) {

throw new CompilerException(

'The method entry is not implemented by Utf8Info. (index: ' . $method->getNameIndex() . ', Segment: ' . __CLASS__ . ')'

);

}

if (!($descriptor instanceof Utf8Info)) {

throw new CompilerException(

'The method entry is not implemented by Utf8Info. (index: ' . $method->getDescriptorIndex() . ', Segment: ' . __CLASS__ . ')'

);

}

$this->binaryWriter->writeUnsignedShort($method->getAccessFlags());

$this->binaryWriter->writeUnsignedShort($method->getNameIndex());

$this->binaryWriter->writeUnsignedShort($method->getDescriptorIndex());

// Build attributes_count

AttributesCount::init(

$method->getAttributes(),

$this->classFileStructureBuilder->getConstantPool(),

$this->binaryWriter

)->build();

if (count($method->getAttributes()) === 0) {

continue;

}

// Build attributes

Attributes::init(

$method->getAttributes(),

$this->classFileStructureBuilder->getConstantPool(),

$this->binaryWriter

)->build();

}

}

}