classLine

packages/bison-parser/src/Ast/Line.php:25

final class Line
    implements Declaration, RhsItem

Public API: explicitly declared with @visibility public.

A #line directive: from here on, Bison counts lines from the number given, in the file named.

Bison reads #line at the start of a line anywhere in the file and changes the locations it reports and, through them, the order it numbers symbols in. The directive is kept where it stands: among the declarations, among the rules, or inside a rule.

Reading a line directive between two rulesdoctest

$file = (new \BisonParser\Parser())->parse("%%\na: ;\n#line 10 \"other.y\"\nb: ;\n");
    $line = $file->grammar[1];
    [$line->line, $line->file, (string) $line->location()] // => [10, 'other.y', '3:1']

Properties§

public int $line

source §

public string|null $file

source §

public Location $location

source §

Methods§

public function __construct(
    public int $line,
    public string|null $file,
    public Location $location,
)

source §

Parameters

`$line`	`int`	The line number the next line gets
`$file`	`string\|null`	The file name given, or null when the directive names none
`$location`	`Location`	Where the directive is written