traxys/tree-sitter
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Implement character set difference

Browse source
This commit is contained in:
Max Brunsfeld 2014-02-07 12:57:35 -08:00
parent b94fa3ed35
commit df3397f02c
7 changed files with 200 additions and 139 deletions
Download patch file Download diff file Expand all files Collapse all files

40
character_set_spec.cpp
View file

@ -30,33 +30,63 @@ describe("character sets", []() {
describe("computing unions", []() {
it("works for disjoint sets", []() {
CharacterSet set({ {'a', 'z'} }, true);
set.union_with(CharacterSet({ {'A', 'Z'} }, true));
set.add_set(CharacterSet({ {'A', 'Z'} }, true));
AssertThat(set, Equals(CharacterSet({ {'a', 'z'}, {'A', 'Z'}, })));
});
it("works for sets with adjacent ranges", []() {
CharacterSet set({ {'a', 'r'} }, true);
set.union_with(CharacterSet({ {'s', 'z'} }, true));
set.add_set(CharacterSet({ {'s', 'z'} }, true));
AssertThat(set, Equals(CharacterSet({ {'a', 'z'} }, true)));
set = CharacterSet({ 'c' });
auto c = set.complement();
set.union_with(c);
set.add_set(c);
AssertThat(set, Equals(CharacterSet({ {0, -1} }, true)));
});
it("works when the result becomes a continuous range", []() {
CharacterSet set({ {'a', 'd'}, {'f', 'z'} }, true);
set.union_with(CharacterSet({ {'c', 'g'} }, true));
set.add_set(CharacterSet({ {'c', 'g'} }, true));
AssertThat(set, Equals(CharacterSet({ {'a', 'z'} }, true)));
});
it("does nothing for the set of all characters", []() {
CharacterSet set({ 'a' });
set.union_with(set.complement());
set.add_set(set.complement());
AssertThat(set, Equals(CharacterSet({ {'\0', '\xff'} }, true)));
});
});
describe("computing differences", []() {
it("works for disjoint sets", []() {
CharacterSet set1({ {'a','z'} }, true);
set1.remove_set(CharacterSet({ {'A','Z'} }, true));
AssertThat(set1, Equals(CharacterSet({ {'a', 'z'} }, true)));
});
it("works when one set spans the other", []() {
CharacterSet set1({ {'a','z'} }, true);
set1.remove_set(CharacterSet({ {'d','s'} }, true));
AssertThat(set1, Equals(CharacterSet({ {'a', 'c'}, {'t', 'z'} })));
});
it("works for sets that overlap", []() {
CharacterSet set1({ {'a','s'} }, true);
set1.remove_set(CharacterSet({ {'m','z'} }, true));
AssertThat(set1, Equals(CharacterSet({ {'a', 'l'} }, true)));
CharacterSet set2({ {'m','z'} }, true);
set2.remove_set(CharacterSet({ {'a','s'} }, true));
AssertThat(set2, Equals(CharacterSet({ {'t', 'z'} }, true)));
});
it("works for sets with multiple ranges", []() {
CharacterSet set1({ {'a','d'}, {'m', 'z'} });
set1.remove_set(CharacterSet({ {'c','o'}, {'s','x'} }));
AssertThat(set1, Equals(CharacterSet({ {'a', 'b'}, {'p','r'}, {'y','z'} })));
});
});
});
END_TEST