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Optimize format string parsing

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This commit is contained in:
Victor Zverovich
2020-06-06 07:13:38 -07:00
parent 09737dd83b
commit f11e968708
5 changed files with 68 additions and 71 deletions
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11
test/scan.h
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@@ -169,14 +169,15 @@ struct scan_handler : error_handler {
scan_ctx_.advance_to(it + size);
}
void on_arg_id() { on_arg_id(next_arg_id_++); }
void on_arg_id(int id) {
int on_arg_id() { return on_arg_id(next_arg_id_++); }
int on_arg_id(int id) {
if (id >= args_.size) on_error("argument index out of range");
arg_ = args_.data[id];
return id;
}
void on_arg_id(string_view) { on_error("invalid format"); }
int on_arg_id(string_view) { return on_error("invalid format"), 0; }
void on_replacement_field(const char*) {
void on_replacement_field(int, const char*) {
auto it = scan_ctx_.begin(), end = scan_ctx_.end();
switch (arg_.type) {
case scan_type::int_type:
@@ -208,7 +209,7 @@ struct scan_handler : error_handler {
}
}
const char* on_format_specs(const char* begin, const char*) {
const char* on_format_specs(int, const char* begin, const char*) {
if (arg_.type != scan_type::custom_type) return begin;
parse_ctx_.advance_to(begin);
arg_.custom.scan(arg_.custom.value, parse_ctx_, scan_ctx_);