23   std::optional<char32_t> next{io.PrepareInput(edit, remaining)};  in EditBOZInput()  local
24   if (next.value_or('?') == '0') {  in EditBOZInput()
26       next = io.NextInField(remaining, edit);  in EditBOZInput()
27     } while (next && *next == '0');  in EditBOZInput()
32   for (; next; next = io.NextInField(remaining, edit)) {  in EditBOZInput()
34     char32_t ch{*next};  in EditBOZInput()
101     std::optional<char32_t> &next, std::optional<int> &remaining) {  in ScanNumericPrefix()  argument
102   next = io.PrepareInput(edit, remaining);  in ScanNumericPrefix()
104   if (next) {  in ScanNumericPrefix()
105     negative = *next == '-';  in ScanNumericPrefix()
106     if (negative || *next == '+') {  in ScanNumericPrefix()
108       next = io.NextInField(remaining, edit);  in ScanNumericPrefix()
141   std::optional<char32_t> next;  in EditIntegerInput()  local
142   bool negate{ScanNumericPrefix(io, edit, next, remaining)};  in EditIntegerInput()
146   for (; next; next = io.NextInField(remaining, edit)) {  in EditIntegerInput()
147     char32_t ch{*next};  in EditIntegerInput()
199   std::optional<char32_t> next;  in ScanRealInput()  local
208   if (ScanNumericPrefix(io, edit, next, remaining)) {  in ScanRealInput()
212   if (!next || (!bzMode && *next == ' ')) { // empty/blank field means zero  in ScanRealInput()
220   char32_t first{*next >= 'a' && *next <= 'z' ? *next + 'A' - 'a' : *next};  in ScanRealInput()
224     for (; next &&  in ScanRealInput()
225          ((*next >= 'a' && *next <= 'z') || (*next >= 'A' && *next <= 'Z'));  in ScanRealInput()
226          next = io.NextInField(remaining, edit)) {  in ScanRealInput()
227       if (*next >= 'a' && *next <= 'z') {  in ScanRealInput()
228         Put(*next - 'a' + 'A');  in ScanRealInput()
230         Put(*next);  in ScanRealInput()
233     if (next && *next == '(') { // NaN(...)  in ScanRealInput()
237         next = io.NextInField(remaining, edit);  in ScanRealInput()
240         } else if (!next) {  in ScanRealInput()
242         } else if (*next == '(') {  in ScanRealInput()
244         } else if (*next == ')') {  in ScanRealInput()
247         Put(*next);  in ScanRealInput()
256     for (; next; next = io.NextInField(remaining, edit)) {  in ScanRealInput()
257       char32_t ch{*next};  in ScanRealInput()
282     if (next &&  in ScanRealInput()
283         (*next == 'e' || *next == 'E' || *next == 'd' || *next == 'D' ||  in ScanRealInput()
284             *next == 'q' || *next == 'Q')) {  in ScanRealInput()
288       next = io.NextInField(remaining, edit);  in ScanRealInput()
293     if (next &&  in ScanRealInput()
294         (*next == '-' || *next == '+' || (*next >= '0' && *next <= '9') ||  in ScanRealInput()
295             *next == ' ' || *next == '\t')) {  in ScanRealInput()
296       bool negExpo{*next == '-'};  in ScanRealInput()
297       if (negExpo || *next == '+') {  in ScanRealInput()
298         next = io.NextInField(remaining, edit);  in ScanRealInput()
300       for (exponent = 0; next; next = io.NextInField(remaining, edit)) {  in ScanRealInput()
301         if (*next >= '0' && *next <= '9') {  in ScanRealInput()
303             exponent = 10 * exponent + *next - '0';  in ScanRealInput()
305         } else if (*next == ' ' || *next == '\t') {  in ScanRealInput()
334     if (next && (*next == ' ' || *next == '\t')) {  in ScanRealInput()
335       next = io.NextInField(remaining, edit);  in ScanRealInput()
337     if (!next) { // NextInField fails on separators like ')'  in ScanRealInput()
339       next = io.GetCurrentChar(byteCount);  in ScanRealInput()
340       if (next && *next == ')') {  in ScanRealInput()
345     while (next && (*next == ' ' || *next == '\t')) {  in ScanRealInput()
346       next = io.NextInField(remaining, edit);  in ScanRealInput()
348     if (next) {  in ScanRealInput()
573   std::optional<char32_t> next{io.PrepareInput(edit, remaining)};  in EditLogicalInput()  local
574   if (next && *next == '.') { // skip optional period  in EditLogicalInput()
575     next = io.NextInField(remaining, edit);  in EditLogicalInput()
577   if (!next) {  in EditLogicalInput()
581   switch (*next) {  in EditLogicalInput()
592         "Bad character '%lc' in LOGICAL input field", *next);  in EditLogicalInput()
622       auto next{io.GetCurrentChar(byteCount)};  in EditDelimitedCharacterInput()  local
623       if (next && *next == delimiter) {  in EditDelimitedCharacterInput()
656   while (std::optional<char32_t> next{io.NextInField(remaining, edit)}) {  in EditListDirectedCharacterInput()
658     switch (*next) {  in EditListDirectedCharacterInput()
676       *x++ = *next;  in EditListDirectedCharacterInput()