42 lines
1.1 KiB
PHP
42 lines
1.1 KiB
PHP
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<?php
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declare(strict_types = 1);
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namespace LanguageServer\NodeVisitor;
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use PhpParser\{NodeVisitorAbstract, Node};
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class ColumnCalculator extends NodeVisitorAbstract
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{
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private $code;
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private $codeLength;
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public function __construct($code)
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{
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$this->code = $code;
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$this->codeLength = strlen($code);
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}
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public function enterNode(Node $node)
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{
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$startFilePos = $node->getAttribute('startFilePos');
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$endFilePos = $node->getAttribute('endFilePos');
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if ($startFilePos > $this->codeLength || $endFilePos > $this->codeLength) {
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throw new \RuntimeException('Invalid position information');
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}
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$startLinePos = strrpos($this->code, "\n", $startFilePos - $this->codeLength);
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if ($startLinePos === false) {
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$startLinePos = -1;
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}
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$endLinePos = strrpos($this->code, "\n", $endFilePos - $this->codeLength);
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if ($endLinePos === false) {
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$endLinePos = -1;
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}
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$node->setAttribute('startColumn', $startFilePos - $startLinePos);
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$node->setAttribute('endColumn', $endFilePos - $endLinePos);
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}
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}
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