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Move specs checker to core.h

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This commit is contained in:
Victor Zverovich 2021-05-13 19:33:09 -07:00
parent ced3037523
commit 57280762b6
2 changed files with 92 additions and 92 deletions
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94
include/fmt/core.h
View File

@ -1906,6 +1906,98 @@ struct dynamic_format_specs : basic_format_specs<Char> {
arg_ref<Char> precision_ref;
};
struct auto_id {};
// A format specifier handler that sets fields in basic_format_specs.
template <typename Char> class specs_setter {
public:
explicit FMT_CONSTEXPR specs_setter(basic_format_specs<Char>& specs)
: specs_(specs) {}
FMT_CONSTEXPR specs_setter(const specs_setter& other)
: specs_(other.specs_) {}
FMT_CONSTEXPR void on_align(align_t align) { specs_.align = align; }
FMT_CONSTEXPR void on_fill(basic_string_view<Char> fill) {
specs_.fill = fill;
}
FMT_CONSTEXPR void on_plus() { specs_.sign = sign::plus; }
FMT_CONSTEXPR void on_minus() { specs_.sign = sign::minus; }
FMT_CONSTEXPR void on_space() { specs_.sign = sign::space; }
FMT_CONSTEXPR void on_hash() { specs_.alt = true; }
FMT_CONSTEXPR void on_localized() { specs_.localized = true; }
FMT_CONSTEXPR void on_zero() {
specs_.align = align::numeric;
specs_.fill[0] = Char('0');
}
FMT_CONSTEXPR void on_width(int width) { specs_.width = width; }
FMT_CONSTEXPR void on_precision(int precision) {
specs_.precision = precision;
}
FMT_CONSTEXPR void end_precision() {}
FMT_CONSTEXPR void on_type(Char type) {
specs_.type = static_cast<char>(type);
}
protected:
basic_format_specs<Char>& specs_;
};
// Format spec handler that saves references to arguments representing dynamic
// width and precision to be resolved at formatting time.
template <typename ParseContext>
class dynamic_specs_handler
: public specs_setter<typename ParseContext::char_type> {
public:
using char_type = typename ParseContext::char_type;
FMT_CONSTEXPR dynamic_specs_handler(dynamic_format_specs<char_type>& specs,
ParseContext& ctx)
: specs_setter<char_type>(specs), specs_(specs), context_(ctx) {}
FMT_CONSTEXPR dynamic_specs_handler(const dynamic_specs_handler& other)
: specs_setter<char_type>(other),
specs_(other.specs_),
context_(other.context_) {}
template <typename Id> FMT_CONSTEXPR void on_dynamic_width(Id arg_id) {
specs_.width_ref = make_arg_ref(arg_id);
}
template <typename Id> FMT_CONSTEXPR void on_dynamic_precision(Id arg_id) {
specs_.precision_ref = make_arg_ref(arg_id);
}
FMT_CONSTEXPR void on_error(const char* message) {
context_.on_error(message);
}
private:
using arg_ref_type = arg_ref<char_type>;
FMT_CONSTEXPR arg_ref_type make_arg_ref(int arg_id) {
context_.check_arg_id(arg_id);
return arg_ref_type(arg_id);
}
FMT_CONSTEXPR arg_ref_type make_arg_ref(auto_id) {
return arg_ref_type(context_.next_arg_id());
}
FMT_CONSTEXPR arg_ref_type make_arg_ref(basic_string_view<char_type> arg_id) {
context_.check_arg_id(arg_id);
basic_string_view<char_type> format_str(
context_.begin(), to_unsigned(context_.end() - context_.begin()));
return arg_ref_type(arg_id);
}
dynamic_format_specs<char_type>& specs_;
ParseContext& context_;
};
template <typename Char> constexpr bool is_ascii_letter(Char c) {
return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z');
}
@ -1997,8 +2089,6 @@ FMT_CONSTEXPR const Char* parse_align(const Char* begin, const Char* end,
return begin;
}
struct auto_id {};
template <typename Char> FMT_CONSTEXPR bool is_name_start(Char c) {
return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || '_' == c;
}

90
include/fmt/format.h
View File

@ -2326,44 +2326,6 @@ template <typename ErrorHandler> class precision_checker {
ErrorHandler& handler_;
};
// A format specifier handler that sets fields in basic_format_specs.
template <typename Char> class specs_setter {
public:
explicit FMT_CONSTEXPR specs_setter(basic_format_specs<Char>& specs)
: specs_(specs) {}
FMT_CONSTEXPR specs_setter(const specs_setter& other)
: specs_(other.specs_) {}
FMT_CONSTEXPR void on_align(align_t align) { specs_.align = align; }
FMT_CONSTEXPR void on_fill(basic_string_view<Char> fill) {
specs_.fill = fill;
}
FMT_CONSTEXPR void on_plus() { specs_.sign = sign::plus; }
FMT_CONSTEXPR void on_minus() { specs_.sign = sign::minus; }
FMT_CONSTEXPR void on_space() { specs_.sign = sign::space; }
FMT_CONSTEXPR void on_hash() { specs_.alt = true; }
FMT_CONSTEXPR void on_localized() { specs_.localized = true; }
FMT_CONSTEXPR void on_zero() {
specs_.align = align::numeric;
specs_.fill[0] = Char('0');
}
FMT_CONSTEXPR void on_width(int width) { specs_.width = width; }
FMT_CONSTEXPR void on_precision(int precision) {
specs_.precision = precision;
}
FMT_CONSTEXPR void end_precision() {}
FMT_CONSTEXPR void on_type(Char type) {
specs_.type = static_cast<char>(type);
}
protected:
basic_format_specs<Char>& specs_;
};
template <typename ErrorHandler> class numeric_specs_checker {
public:
FMT_CONSTEXPR numeric_specs_checker(ErrorHandler& eh, detail::type arg_type)
@ -2507,58 +2469,6 @@ class specs_handler : public specs_setter<typename Context::char_type> {
Context& context_;
};
// Format spec handler that saves references to arguments representing dynamic
// width and precision to be resolved at formatting time.
template <typename ParseContext>
class dynamic_specs_handler
: public specs_setter<typename ParseContext::char_type> {
public:
using char_type = typename ParseContext::char_type;
FMT_CONSTEXPR dynamic_specs_handler(dynamic_format_specs<char_type>& specs,
ParseContext& ctx)
: specs_setter<char_type>(specs), specs_(specs), context_(ctx) {}
FMT_CONSTEXPR dynamic_specs_handler(const dynamic_specs_handler& other)
: specs_setter<char_type>(other),
specs_(other.specs_),
context_(other.context_) {}
template <typename Id> FMT_CONSTEXPR void on_dynamic_width(Id arg_id) {
specs_.width_ref = make_arg_ref(arg_id);
}
template <typename Id> FMT_CONSTEXPR void on_dynamic_precision(Id arg_id) {
specs_.precision_ref = make_arg_ref(arg_id);
}
FMT_CONSTEXPR void on_error(const char* message) {
context_.on_error(message);
}
private:
using arg_ref_type = arg_ref<char_type>;
FMT_CONSTEXPR arg_ref_type make_arg_ref(int arg_id) {
context_.check_arg_id(arg_id);
return arg_ref_type(arg_id);
}
FMT_CONSTEXPR arg_ref_type make_arg_ref(auto_id) {
return arg_ref_type(context_.next_arg_id());
}
FMT_CONSTEXPR arg_ref_type make_arg_ref(basic_string_view<char_type> arg_id) {
context_.check_arg_id(arg_id);
basic_string_view<char_type> format_str(
context_.begin(), to_unsigned(context_.end() - context_.begin()));
return arg_ref_type(arg_id);
}
dynamic_format_specs<char_type>& specs_;
ParseContext& context_;
};
template <typename OutputIt, typename Char, typename Context>
struct format_handler : detail::error_handler {
basic_format_parse_context<Char> parse_context;