tree-sitter/spec/compiler/rules/pattern_spec.cpp

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2.4 KiB
C++

#include "spec_helper.h"
#include "rules.h"
#include "transition_map.h"
using namespace tree_sitter::rules;
Describe(pattern_rules) {
It(parses_simple_strings) {
Pattern rule("abc");
AssertThat(
rule.to_rule_tree()->to_string(),
Equals(seq({
character('a'),
character('b'),
character('c')
})->to_string()));
};
It(parses_character_classes) {
Pattern rule("\\w-\\d");
AssertThat(
rule.to_rule_tree()->to_string(),
Equals(seq({
character(CharClassWord),
character('-'),
character(CharClassDigit)
})->to_string()));
};
It(parses_choices) {
Pattern rule("ab|cd|ef");
AssertThat(
rule.to_rule_tree()->to_string(),
Equals(choice({
seq({
character('a'),
character('b'),
}),
seq({
character('c'),
character('d')
}),
seq({
character('e'),
character('f')
})
})->to_string()));
};
It(parses_choices_in_sequences) {
Pattern rule("(a|b)cd");
AssertThat(
rule.to_rule_tree()->to_string(),
Equals(seq({
choice({
character('a'),
character('b'),
}),
character('c'),
character('d')
})->to_string()));
};
It(parses_special_characters_when_they_are_escaped) {
Pattern rule("a\\(b");
AssertThat(
rule.to_rule_tree()->to_string(),
Equals(seq({
character('a'),
character('('),
character('b')
})->to_string()));
}
It(parses_repeating_rules) {
Pattern rule("(ab)+(cd)+");
AssertThat(
rule.to_rule_tree()->to_string(),
Equals(
seq({
repeat(seq({
character('a'),
character('b')
})),
repeat(seq({
character('c'),
character('d')
})),
})->to_string()
));
}
};