traxys/tree-sitter
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Put rule transitions in LR namespace

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This commit is contained in:
Max Brunsfeld 2013-12-28 23:26:20 -08:00
parent 656f6b0819
commit 30315a78d2
10 changed files with 177 additions and 144 deletions
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19
spec/compiler/lr/item_spec.cpp
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@ -5,14 +5,27 @@ using namespace tree_sitter::lr;
START_TEST
describe("items", []() {
Grammar grammar = test_grammars::arithmetic();
describe("transitions", [&]() {
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