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15374a31dd
Lifted from / inspired by a similar change in graphql/graphql-js#722, this creates a new function `printError()` (and uses it as the implementation for `GraphQLError#toString()`) which prints location information in the context of an error. This is moved from the syntax error where it used to be hard-coded, so it may now be used to format validation errors, value coercion errors, or any other error which may be associated with a location. ref: graphql/graphql-js BREAKING CHANGE: The SyntaxError message does not contain the codeframe anymore and only the message, (string) $error will print the codeframe.
90 lines
2.3 KiB
PHP
90 lines
2.3 KiB
PHP
<?php
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namespace GraphQL\Language;
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use GraphQL\Utils\Utils;
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/**
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* Class Source
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* @package GraphQL\Language
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*/
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class Source
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{
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/**
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* @var string
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*/
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public $body;
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/**
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* @var int
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*/
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public $length;
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/**
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* @var string
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*/
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public $name;
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/**
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* @var SourceLocation
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*/
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public $locationOffset;
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/**
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* Source constructor.
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*
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* A representation of source input to GraphQL.
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* `name` and `locationOffset` are optional. They are useful for clients who
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* store GraphQL documents in source files; for example, if the GraphQL input
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* starts at line 40 in a file named Foo.graphql, it might be useful for name to
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* be "Foo.graphql" and location to be `{ line: 40, column: 0 }`.
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* line and column in locationOffset are 1-indexed
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*
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* @param string $body
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* @param string|null $name
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* @param SourceLocation|null $location
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*/
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public function __construct($body, $name = null, SourceLocation $location = null)
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{
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Utils::invariant(
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is_string($body),
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'GraphQL query body is expected to be string, but got ' . Utils::getVariableType($body)
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);
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$this->body = $body;
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$this->length = mb_strlen($body, 'UTF-8');
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$this->name = $name ?: 'GraphQL request';
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$this->locationOffset = $location ?: new SourceLocation(1, 1);
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Utils::invariant(
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$this->locationOffset->line > 0,
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'line in locationOffset is 1-indexed and must be positive'
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);
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Utils::invariant(
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$this->locationOffset->column > 0,
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'column in locationOffset is 1-indexed and must be positive'
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);
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}
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/**
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* @param $position
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* @return SourceLocation
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*/
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public function getLocation($position)
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{
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$line = 1;
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$column = $position + 1;
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$utfChars = json_decode('"\u2028\u2029"');
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$lineRegexp = '/\r\n|[\n\r'.$utfChars.']/su';
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$matches = [];
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preg_match_all($lineRegexp, mb_substr($this->body, 0, $position, 'UTF-8'), $matches, PREG_OFFSET_CAPTURE);
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foreach ($matches[0] as $index => $match) {
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$line += 1;
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$column = $position + 1 - ($match[1] + mb_strlen($match[0], 'UTF-8'));
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}
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return new SourceLocation($line, $column);
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}
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}
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