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fdr_compile: don't do string copies in isSuffix

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This commit is contained in:
Justin Viiret 2017-08-10 13:19:26 +10:00 committed by Matthew Barr
parent d5b3f2b508
commit 36136f1003
1 changed files with 8 additions and 7 deletions
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15
src/fdr/fdr_compile.cpp
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@ -638,16 +638,17 @@ bytecode_ptr<FDR> FDRCompiler::build() {
static
bool isSuffix(const hwlmLiteral &lit1, const hwlmLiteral &lit2) {
auto s1 = lit1.s;
auto s2 = lit2.s;
if (lit1.nocase || lit2.nocase) {
upperString(s1);
upperString(s2);
}
const auto &s1 = lit1.s;
const auto &s2 = lit2.s;
size_t len1 = s1.length();
size_t len2 = s2.length();
assert(len1 >= len2);
return equal(s2.begin(), s2.end(), s1.begin() + len1 - len2);
auto lit_cmp = (lit1.nocase || lit2.nocase)
? [](char a, char b) { return mytoupper(a) == mytoupper(b); }
: [](char a, char b) { return a == b; };
return equal(s2.begin(), s2.end(), s1.begin() + len1 - len2, lit_cmp);
}
/*