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[Perl] implements MarkdownTokenMatcher
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2 files changed

+264
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‎perl/Makefile‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -8,8 +8,8 @@ SOURCE_FILES = $(shell find lib -name "*.pm" | grep -v $(GHERKIN_PARSER) | grep
88
GHERKIN = bin/gherkin
99
GHERKIN_GENERATE_TOKENS = bin/gherkin-generate-tokens
1010

11-
GOOD_FEATURE_FILES = $(shell find ../testdata/good -name "*.feature")
12-
BAD_FEATURE_FILES = $(shell find ../testdata/bad -name "*.feature")
11+
GOOD_FEATURE_FILES = $(shell find ../testdata/good -name "*.feature" -o -name "*.feature.md")
12+
BAD_FEATURE_FILES = $(shell find ../testdata/bad -name "*.feature" -o -name "*.feature.md")
1313

1414
TOKENS = $(patsubst ../testdata/%,acceptance/testdata/%.tokens,$(GOOD_FEATURE_FILES))
1515
ASTS = $(patsubst ../testdata/%,acceptance/testdata/%.ast.ndjson,$(GOOD_FEATURE_FILES))

‎perl/lib/Gherkin/MarkdownTokenMatcher.pm‎

Lines changed: 262 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -3,7 +3,268 @@ package Gherkin::MarkdownTokenMatcher;
33
use strict;
44
use warnings;
55

6-
use base 'Gherkin::TokenMatcher';
6+
my $DEFAULT_DOC_STRING_SEPARATOR = q/^(```[`]*)(.*)/;
7+
my $KEYWORD_PREFIX_BULLET = q/^(\\s*[*+-]\\s*)/;
8+
my $KEYWORD_PREFIX_HEADER = q/^(#{1,6}\\s)/;
9+
10+
use Class::XSAccessor accessors => [
11+
qw/dialect _default_dialect_name _indent_to_remove _active_doc_string_separator _keyword_types
12+
_matched_FeatureLine _non_star_step_keywords/,
13+
];
14+
15+
use Gherkin::Dialect;
16+
17+
sub new {
18+
my ( $class, $options ) = @_;
19+
$options->{'dialect'} ||= Gherkin::Dialect->new( { dialect => 'en' } );
20+
my $self = bless $options, $class;
21+
$self->_default_dialect_name( $self->dialect_name );
22+
my @non_star_step_keywords = map {
23+
grep { $_ ne '* ' }
24+
@{ $self->dialect->$_ }
25+
} qw/Given When Then And But/;
26+
$self->_non_star_step_keywords( \@non_star_step_keywords );
27+
$self->reset();
28+
return $self;
29+
}
30+
31+
sub _add_keyword_type_mappings {
32+
my ( $keyword_types, $keywords, $type ) = @_;
33+
34+
for my $keyword ( @{$keywords} ) {
35+
if ( not exists $keyword_types->{$keyword} ) {
36+
$keyword_types->{$keyword} = [];
37+
}
38+
push( @{ $keyword_types->{$keyword} }, $type );
39+
}
40+
}
41+
42+
sub dialect_name { return $_[0]->dialect->dialect; }
43+
44+
sub change_dialect {
45+
my $self = shift;
46+
$self->dialect->change_dialect(@_);
47+
48+
my $keyword_types = {};
49+
_add_keyword_type_mappings( $keyword_types, $self->dialect->Given,
50+
Cucumber::Messages::Step::KEYWORDTYPE_CONTEXT );
51+
_add_keyword_type_mappings( $keyword_types, $self->dialect->When,
52+
Cucumber::Messages::Step::KEYWORDTYPE_ACTION );
53+
_add_keyword_type_mappings( $keyword_types, $self->dialect->Then,
54+
Cucumber::Messages::Step::KEYWORDTYPE_OUTCOME );
55+
_add_keyword_type_mappings( $keyword_types, [ @{ $self->dialect->And }, @{ $self->dialect->But } ],
56+
Cucumber::Messages::Step::KEYWORDTYPE_CONJUNCTION );
57+
$self->_keyword_types($keyword_types);
58+
}
59+
60+
sub reset {
61+
my $self = shift;
62+
$self->change_dialect( $self->_default_dialect_name );
63+
$self->_indent_to_remove(0);
64+
$self->_active_doc_string_separator($DEFAULT_DOC_STRING_SEPARATOR);
65+
}
66+
67+
sub match_FeatureLine {
68+
my ( $self, $token ) = @_;
69+
return if $self->_matched_FeatureLine;
70+
71+
# We first try to match "# Feature: blah"
72+
my $result = $self->_match_title_line( $KEYWORD_PREFIX_HEADER, ':',
73+
$token, FeatureLine => $self->dialect->Feature );
74+
# If we didn't match "# Feature: blah", we still match this line
75+
# as a FeatureLine.
76+
# The reason for this is that users may not want to be constrained by having this as their fist line.
77+
unless ($result) {
78+
$self->_set_token_matched( $token,
79+
FeatureLine => { text => $token->line->_trimmed_line_text } );
80+
}
81+
$self->_matched_FeatureLine(1);
82+
}
83+
84+
sub match_RuleLine {
85+
my ( $self, $token ) = @_;
86+
$self->_match_title_line( $KEYWORD_PREFIX_HEADER, ':',
87+
$token, RuleLine => $self->dialect->Rule );
88+
}
89+
90+
sub match_ScenarioLine {
91+
my ( $self, $token ) = @_;
92+
$self->_match_title_line( $KEYWORD_PREFIX_HEADER, ':',
93+
$token, ScenarioLine => $self->dialect->Scenario )
94+
or $self->_match_title_line( $KEYWORD_PREFIX_HEADER, ':',
95+
$token, ScenarioLine => $self->dialect->ScenarioOutline );
96+
}
97+
98+
sub match_BackgroundLine {
99+
my ( $self, $token ) = @_;
100+
$self->_match_title_line( $KEYWORD_PREFIX_HEADER, ':',
101+
$token, BackgroundLine => $self->dialect->Background );
102+
}
103+
104+
sub match_ExamplesLine {
105+
my ( $self, $token ) = @_;
106+
$self->_match_title_line( $KEYWORD_PREFIX_HEADER, ':',
107+
$token, ExamplesLine => $self->dialect->Examples );
108+
}
109+
110+
sub match_Language {
111+
my ( $self, $token ) = @_;
112+
# We've made a deliberate choice not to support `# language: [ISO 639-1]` headers or similar
113+
# in Markdown. Users should specify a language globally.
114+
return '';
115+
}
116+
117+
sub match_TagLine {
118+
my ( $self, $token ) = @_;
119+
my @tags = ();
120+
while ( $token->line->line_text =~ m/`(@[^`]+)`/g ) {
121+
push(
122+
@tags,
123+
{
124+
column => 2 + length($`),
125+
text => $1,
126+
}
127+
);
128+
}
129+
return unless scalar(@tags);
130+
$self->_set_token_matched( $token,
131+
TagLine => { items => \@tags } );
132+
}
133+
134+
sub _match_title_line {
135+
my ( $self, $prefix, $keyword_suffix, $token, $token_type, $keywords ) = @_;
136+
my $regex = $prefix . '(' . join( '|', @{$keywords} ) . ')' . $keyword_suffix . '\s*(.*)';
137+
if ( $token->line->_trimmed_line_text =~ qr/$regex/ ) {
138+
my $indent = $token->line->indent + ( length($1) || 0 );
139+
my $keyword = $2;
140+
my $text = $3;
141+
$text =~ s/\s+$//;
142+
my $keyword_type;
143+
if ( exists $self->_keyword_types->{$keyword} ) {
144+
# only set the keyword type if this is a step keyword
145+
$keyword_type =
146+
( scalar( @{ $self->_keyword_types->{$keyword} } ) > 1 )
147+
? Cucumber::Messages::Step::KEYWORDTYPE_UNKNOWN
148+
: $self->_keyword_types->{$keyword}->[0];
149+
}
150+
$self->_set_token_matched( $token, $token_type,
151+
{ indent => $indent, keyword => $keyword, text => $text, keyword_type => $keyword_type } );
152+
}
153+
}
154+
155+
sub _set_token_matched {
156+
my ( $self, $token, $matched_type, $options ) = @_;
157+
$options->{'items'} ||= [];
158+
$token->matched_type($matched_type);
159+
160+
if ( defined $options->{'text'} ) {
161+
chomp $options->{'text'};
162+
$token->matched_text( $options->{'text'} );
163+
}
164+
165+
$token->matched_keyword( $options->{'keyword'} )
166+
if defined $options->{'keyword'};
167+
$token->matched_keyword_type( $options->{'keyword_type'} )
168+
if defined $options->{'keyword_type'};
169+
170+
if ( defined $options->{'indent'} ) {
171+
$token->matched_indent( $options->{'indent'} );
172+
} else {
173+
$token->matched_indent( $token->line ? $token->line->indent : 0 );
174+
}
175+
176+
$token->matched_items( $options->{'items'} )
177+
if defined $options->{'items'};
178+
179+
$token->location->{'column'} = $token->matched_indent + 1;
180+
$token->matched_gherkin_dialect( $self->dialect_name );
181+
}
182+
183+
sub match_EOF {
184+
my ( $self, $token ) = @_;
185+
if ( $token->is_eof ) {
186+
$self->_set_token_matched( $token, 'EOF' );
187+
}
188+
}
189+
190+
sub match_Empty {
191+
my ( $self, $token ) = @_;
192+
if (
193+
$token->line->is_empty
194+
|| ( !$self->match_TagLine($token)
195+
&& !$self->match_FeatureLine($token)
196+
&& !$self->match_ScenarioLine($token)
197+
&& !$self->match_BackgroundLine($token)
198+
&& !$self->match_ExamplesLine($token)
199+
&& !$self->match_RuleLine($token)
200+
&& !$self->match_TableRow($token)
201+
&& !$self->match_Comment($token)
202+
&& !$self->match_Language($token)
203+
&& !$self->match_DocStringSeparator($token)
204+
&& !$self->match_EOF($token)
205+
&& !$self->match_StepLine($token) )
206+
)
207+
{
208+
$self->_set_token_matched( $token,
209+
Empty => { indent => 0 } );
210+
}
211+
}
212+
213+
sub match_Comment {
214+
my ( $self, $token ) = @_;
215+
if ( $token->line->startswith('|')
216+
&& $self->_is_gfm_table_separator( $token->line->table_cells ) )
217+
{
218+
$self->_set_token_matched( $token,
219+
Comment => { text => $token->line->line_text, indent => 0 } );
220+
}
221+
}
222+
223+
sub _is_gfm_table_separator {
224+
my ( $self, $table_cells ) = @_;
225+
my @separator_values = grep { $_->{'text'} =~ m/^:?-+:?$/ } @{$table_cells};
226+
return scalar(@separator_values) > 0;
227+
}
228+
229+
sub match_Other {
230+
my ( $self, $token ) = @_;
231+
# take the entire line, except removing DocString indents
232+
my $text = $token->line->get_line_text( $self->_indent_to_remove );
233+
$self->_set_token_matched( $token,
234+
Other => { indent => 0, text => $text } );
235+
}
236+
237+
sub match_StepLine {
238+
my ( $self, $token ) = @_;
239+
$self->_match_title_line( $KEYWORD_PREFIX_BULLET, '',
240+
$token, StepLine => $self->_non_star_step_keywords );
241+
}
242+
243+
sub match_DocStringSeparator {
244+
my ( $self, $token ) = @_;
245+
my $active_doc_string_separator = $self->_active_doc_string_separator;
246+
if ( $token->line->line_text =~ qr/$active_doc_string_separator/ ) {
247+
if ( $self->_active_doc_string_separator eq $DEFAULT_DOC_STRING_SEPARATOR ) {
248+
$self->_active_doc_string_separator( '^(' . $1 . ')$' );
249+
$self->_indent_to_remove( $token->line->indent );
250+
} else {
251+
$self->_active_doc_string_separator($DEFAULT_DOC_STRING_SEPARATOR);
252+
}
253+
$self->_set_token_matched( $token,
254+
DocStringSeparator => { text => '', keyword => $1 } );
255+
}
256+
}
257+
258+
sub match_TableRow {
259+
my ( $self, $token ) = @_;
260+
# Gherkin tables must be indented 2-5 spaces in order to be distinguidedn from non-Gherkin tables
261+
if ( $token->line->line_text =~ m/^\s\s\s?\s?\s?\|/ ) {
262+
my $table_cells = $token->line->table_cells;
263+
return if ( $self->_is_gfm_table_separator($table_cells) );
264+
$self->_set_token_matched( $token,
265+
TableRow => { items => $table_cells } );
266+
}
267+
}
7268

8269
1;
9270

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