Code Coverage for /src/src/DefaultTracer.php

1	<?php
2
3	namespace Wikimedia\WikiPEG;
4
5	use InvalidArgumentException;
6
7	class DefaultTracer implements Tracer {
8	private $indentLevel = 0;
9
10	public function trace( $event ) {
11	switch ( $event['type'] ) {
12	case 'rule.enter':
13	$this->log( $event );
14	$this->indentLevel++;
15	break;
16
17	case 'rule.match':
18	$this->indentLevel--;
19	$this->log( $event );
20	break;
21
22	case 'rule.fail':
23	$this->indentLevel--;
24	$this->log( $event );
25	break;
26
27	default:
28	throw new InvalidArgumentException( "Invalid event type {$event['type']}" );
29	}
30	}
31
32	private function log( $event ) {
33	print str_pad(
34	'' . $event['location'],
35	20
36	)
37	. str_pad( $event['type'], 10 ) . ' '
38	. str_repeat( ' ', $this->indentLevel ) . $event['rule']
39	. $this->formatArgs( $event['args'] ?? null )
40	. "\n";
41	}
42
43	private function formatArgs( $argMap ) {
44	if ( !$argMap ) {
45	return '';
46	}
47
48	$argParts = [];
49	foreach ( $argMap as $argName => $argValue ) {
50	if ( $argName === '$silence' ) {
51	continue;
52	}
53	if ( $argName === '$boolParams' ) {
54	$argParts[] = '0x' . base_convert( $argValue, 10, 16 );
55	} else {
56	$displayName = str_replace( '$param_', '', $argName );
57	if ( $displayName[0] === '&' ) {
58	$displayName = substr( $displayName, 1 );
59	$ref = '&';
60	} else {
61	$ref = '';
62	}
63	$argParts[] = "$displayName=$ref" .
64	json_encode( $argValue, JSON_UNESCAPED_SLASHES \| JSON_UNESCAPED_UNICODE );
65	}
66	}
67	if ( $argParts ) {
68	return '<' . implode( ', ', $argParts ) . '>';
69	} else {
70	return '';
71	}
72	}
73	}