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Avoid redundant character comparisons in generated lex function

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This commit is contained in:
Max Brunsfeld 2017-07-10 14:09:31 -07:00
parent 2755b07222
commit 59236d2ed1
3 changed files with 101 additions and 74 deletions
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22
test/compiler/rules/character_set_test.cc
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@ -305,29 +305,17 @@ describe("CharacterSet", []() {
});
describe("::included_ranges", [&]() {
it("consolidates sequences of 3 or more consecutive characters into ranges", [&]() {
it("consolidates consecutive sequences of characters into ranges", [&]() {
CharacterSet set1 = CharacterSet()
.include('a', 'c')
.include('g')
.include('e', 'j')
.include('m')
.include('z');
AssertThat(set1.included_ranges(), Equals(vector<CharacterRange>({
CharacterRange{'a', 'c'},
CharacterRange('g'),
CharacterRange('z'),
})));
});
it("doesn't consolidate sequences of 2 consecutive characters", [&]() {
CharacterSet set1 = CharacterSet()
.include('a', 'b')
.include('g')
.include('z');
AssertThat(set1.included_ranges(), Equals(vector<CharacterRange>({
CharacterRange('a'),
CharacterRange('b'),
CharacterRange('g'),
CharacterRange{'e', 'j'},
CharacterRange('m'),
CharacterRange('z'),
})));
});