31 lines
No EOL
950 B
C++
31 lines
No EOL
950 B
C++
#include "spec_helper.h"
|
|
|
|
using namespace tree_sitter::lr;
|
|
|
|
START_TEST
|
|
|
|
describe("items", []() {
|
|
describe("construction", [&]() {
|
|
it("finds the item at the start of a rule", [&]() {
|
|
Grammar grammar = test_grammars::arithmetic();
|
|
Item item = Item::at_beginning_of_rule("expression", grammar);
|
|
AssertThat(item, Equals(Item("expression", grammar.rule("expression"), 0)));
|
|
});
|
|
});
|
|
|
|
describe("transitions", [&]() {
|
|
it("computes the possible advancements", [&]() {
|
|
auto char1 = rules::character('a');
|
|
auto char2 = rules::character('b');
|
|
Item item = Item("my-rule", rules::seq({ char1, char2 }), 2);
|
|
|
|
AssertThat(
|
|
item.transitions(),
|
|
Equals(transition_map<rules::Rule, Item>({
|
|
{ char1, make_shared<Item>("my-rule", char2, 3) }
|
|
})));
|
|
});
|
|
});
|
|
});
|
|
|
|
END_TEST |