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grebaldigrebaldi
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TASK: Implement ExportParser
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‎src/Language/AST/Node/Export/ExportNode.php‎

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<?php
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/**
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* PackageFactory.ComponentEngine - Universal View Components for PHP
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* Copyright (C) 2023 Contributors of PackageFactory.ComponentEngine
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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declare(strict_types=1);
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namespace PackageFactory\ComponentEngine\Language\AST\Node\Export;
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use PackageFactory\ComponentEngine\Language\AST\Node\ComponentDeclaration\ComponentDeclarationNode;
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use PackageFactory\ComponentEngine\Language\AST\Node\EnumDeclaration\EnumDeclarationNode;
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use PackageFactory\ComponentEngine\Language\AST\Node\Node;
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use PackageFactory\ComponentEngine\Language\AST\Node\StructDeclaration\StructDeclarationNode;
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use PackageFactory\ComponentEngine\Parser\Source\Range;
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final class ExportNode extends Node
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{
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public function __construct(
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public readonly Range $rangeInSource,
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public readonly ComponentDeclarationNode | EnumDeclarationNode | StructDeclarationNode $declaration
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) {
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}
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}

‎src/Language/Parser/Export/ExportCouldNotBeParsed.php‎

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<?php
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/**
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* PackageFactory.ComponentEngine - Universal View Components for PHP
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* Copyright (C) 2023 Contributors of PackageFactory.ComponentEngine
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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declare(strict_types=1);
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namespace PackageFactory\ComponentEngine\Language\Parser\Export;
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use PackageFactory\ComponentEngine\Language\Parser\ParserException;
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use PackageFactory\ComponentEngine\Parser\Tokenizer\Token;
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use PackageFactory\ComponentEngine\Parser\Tokenizer\TokenTypes;
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final class ExportCouldNotBeParsed extends ParserException
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{
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public static function becauseOfUnexpectedToken(
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TokenTypes $expectedTokenTypes,
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Token $actualToken
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): self {
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return new self(
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code: 1691184282,
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message: sprintf(
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'Export could not be parsed because of unexpected token %s. '
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. 'Expected %s instead.',
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$actualToken->toDebugString(),
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$expectedTokenTypes->toDebugString()
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),
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affectedRangeInSource: $actualToken->boundaries
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);
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}
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}

‎src/Language/Parser/Export/ExportParser.php‎

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<?php
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/**
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* PackageFactory.ComponentEngine - Universal View Components for PHP
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* Copyright (C) 2023 Contributors of PackageFactory.ComponentEngine
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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declare(strict_types=1);
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namespace PackageFactory\ComponentEngine\Language\Parser\Export;
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use PackageFactory\ComponentEngine\Language\AST\Node\ComponentDeclaration\ComponentDeclarationNode;
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use PackageFactory\ComponentEngine\Language\AST\Node\EnumDeclaration\EnumDeclarationNode;
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use PackageFactory\ComponentEngine\Language\AST\Node\Export\ExportNode;
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use PackageFactory\ComponentEngine\Language\AST\Node\StructDeclaration\StructDeclarationNode;
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use PackageFactory\ComponentEngine\Language\Parser\ComponentDeclaration\ComponentDeclarationParser;
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use PackageFactory\ComponentEngine\Language\Parser\EnumDeclaration\EnumDeclarationParser;
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use PackageFactory\ComponentEngine\Language\Parser\StructDeclaration\StructDeclarationParser;
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use PackageFactory\ComponentEngine\Parser\Source\Range;
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use PackageFactory\ComponentEngine\Parser\Tokenizer\Scanner;
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use PackageFactory\ComponentEngine\Parser\Tokenizer\Token;
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use PackageFactory\ComponentEngine\Parser\Tokenizer\TokenType;
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use PackageFactory\ComponentEngine\Parser\Tokenizer\TokenTypes;
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final class ExportParser
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{
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private readonly ComponentDeclarationParser $componentDeclarationParser;
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private readonly EnumDeclarationParser $enumDeclarationParser;
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private readonly StructDeclarationParser $structDeclarationParser;
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public function __construct()
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{
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$this->componentDeclarationParser = new ComponentDeclarationParser();
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$this->enumDeclarationParser = new EnumDeclarationParser();
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$this->structDeclarationParser = new StructDeclarationParser();
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}
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/**
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* @param \Iterator<mixed,Token> $tokens
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* @return ExportNode
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*/
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public function parse(\Iterator &$tokens): ExportNode
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{
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$exportKeywordToken = $this->extractToken($tokens, TokenType::KEYWORD_EXPORT);
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$declaration = match (Scanner::type($tokens)) {
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TokenType::KEYWORD_COMPONENT => $this->parseComponentDeclaration($tokens),
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TokenType::KEYWORD_ENUM => $this->parseEnumDeclaration($tokens),
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TokenType::KEYWORD_STRUCT => $this->parseStructDeclaration($tokens),
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default => throw ExportCouldNotBeParsed::becauseOfUnexpectedToken(
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expectedTokenTypes: TokenTypes::from(
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TokenType::KEYWORD_COMPONENT,
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TokenType::KEYWORD_ENUM,
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TokenType::KEYWORD_STRUCT
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),
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actualToken: $tokens->current()
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)
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};
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return new ExportNode(
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rangeInSource: Range::from(
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$exportKeywordToken->boundaries->start,
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$declaration->rangeInSource->end
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),
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declaration: $declaration
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);
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}
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/**
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* @param \Iterator<mixed,Token> $tokens
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* @param TokenType $tokenType
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* @return Token
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*/
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private function extractToken(\Iterator &$tokens, TokenType $tokenType): Token
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{
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Scanner::assertType($tokens, $tokenType);
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$token = $tokens->current();
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Scanner::skipOne($tokens);
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Scanner::skipSpace($tokens);
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return $token;
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}
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/**
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* @param \Iterator<mixed,Token> $tokens
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* @return ComponentDeclarationNode
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*/
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private function parseComponentDeclaration(\Iterator &$tokens): ComponentDeclarationNode
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{
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return $this->componentDeclarationParser->parse($tokens);
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}
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/**
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* @param \Iterator<mixed,Token> $tokens
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* @return EnumDeclarationNode
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*/
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private function parseEnumDeclaration(\Iterator &$tokens): EnumDeclarationNode
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{
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return $this->enumDeclarationParser->parse($tokens);
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}
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/**
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* @param \Iterator<mixed,Token> $tokens
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* @return StructDeclarationNode
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*/
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private function parseStructDeclaration(\Iterator &$tokens): StructDeclarationNode
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{
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return $this->structDeclarationParser->parse($tokens);
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}
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}

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