parser_keywords: Use unordered_set instead of arrays

This makes the test mentioned in #5305:

    for i in (seq 100000); test 1 = 1; end

run ~5% faster.
This commit is contained in:
Fabian Homborg 2018-11-02 12:28:09 +01:00
parent 47c1144a3c
commit 9300ec55f0

View file

@ -2,6 +2,7 @@
#include "config.h" // IWYU pragma: keep
#include <string>
#include <unordered_set>
#include "common.h"
#include "fallback.h" // IWYU pragma: keep
@ -11,17 +12,17 @@ bool parser_keywords_skip_arguments(const wcstring &cmd) {
return cmd == L"else" || cmd == L"begin";
}
static const wchar_t *const subcommand_keywords[] = {L"command", L"builtin", L"while", L"exec",
static const std::unordered_set<wcstring> subcommand_keywords = {L"command", L"builtin", L"while", L"exec",
L"if", L"and", L"or", L"not"};
bool parser_keywords_is_subcommand(const wcstring &cmd) {
return parser_keywords_skip_arguments(cmd) || contains(subcommand_keywords, cmd);
}
static const wchar_t *const block_keywords[] = {L"for", L"while", L"if",
static const std::unordered_set<wcstring> block_keywords = {L"for", L"while", L"if",
L"function", L"switch", L"begin"};
bool parser_keywords_is_block(const wcstring &word) { return contains(block_keywords, word); }
static const wchar_t *const reserved_keywords[] = {L"end", L"case", L"else", L"return",
static const std::unordered_set<wcstring> reserved_keywords = {L"end", L"case", L"else", L"return",
L"continue", L"break", L"argparse", L"read",
L"set", L"status", L"test", L"["};
bool parser_keywords_is_reserved(const wcstring &word) {