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Dedup auxiliary repeat rules from different source rules

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This commit is contained in:
Max Brunsfeld 2015-05-02 20:42:47 -07:00
parent 6431a5ee75
commit fd97b8a237
5 changed files with 4516 additions and 13058 deletions
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8
spec/compiler/prepare_grammar/expand_repeats_spec.cc
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@ -70,8 +70,9 @@ describe("expand_repeats", []() {
it("does not create redundant auxiliary rules", [&]() {
SyntaxGrammar grammar({
{ "rule0", choice({
seq({ i_token(1), repeat(i_token(3)) }),
seq({ i_token(2), repeat(i_token(3)) }) }) },
seq({ i_token(1), repeat(i_token(4)) }),
seq({ i_token(2), repeat(i_token(4)) }) }) },
{ "rule1", seq({ i_token(3), repeat(i_token(4)) }) },
}, {}, set<Symbol>());
auto match = expand_repeats(grammar);
@ -80,11 +81,12 @@ describe("expand_repeats", []() {
{ "rule0", choice({
seq({ i_token(1), choice({ i_aux_sym(0), blank() }) }),
seq({ i_token(2), choice({ i_aux_sym(0), blank() }) }) }) },
{ "rule1", seq({ i_token(3), choice({ i_aux_sym(0), blank() }) }) },
})));
AssertThat(match.aux_rules, Equals(rule_list({
{ "rule0_repeat0", seq({
i_token(3),
i_token(4),
choice({ i_aux_sym(0), blank() }) }) },
})));
});