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214 lines
4.6 KiB
214 lines
4.6 KiB
/* Generated by re2c 2.2 */
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#line 1 "espurna\\ir_parse_raw.re"
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/*
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Part of the IR MODULE
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For more info:
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- https://re2c.org/
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- https://re2c.org/manual/manual_c.html
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*/
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#pragma once
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// ref.
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// - https://github.com/skvadrik/re2c/blob/423c56ca556de944598f29b59abc43f89b616fb6/examples/c/submatch/02_mtags.re
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// - https://github.com/skvadrik/re2c/blob/b4efac3cc09abcab6cd063df80b23d0da70acc70/examples/c/submatch/http_rfc7230.re
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// - https://github.com/skvadrik/re2c/blob/423c56ca556de944598f29b59abc43f89b616fb6/examples/go/submatch/02_mtags.re
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// - https://github.com/skvadrik/re2c/blob/b4efac3cc09abcab6cd063df80b23d0da70acc70/test/golang/005_mtags.re
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//
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// Example code MTAG updates are stored in a tree-like structure (in the submatch example, a flat vector of TAG and YYCURSOR)
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// Using the observed parser behaviour, instead try to parse things inline right when the MTAG function is called,
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// by comparing the last TAG value with the current one, noticing the increment that will only happen when the match actually happens.
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// May be problematic, but at least there is some safety in the fact that the previous values are only updated when the match block is executed.
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// TODO: same as the 'simple' variant, does not really notify about any errors
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struct TimeRange {
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int tag;
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const char* start;
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};
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ParseResult<Payload> parse(StringView view) {
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const char* YYCURSOR { view.begin() };
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const char* YYLIMIT { view.end() };
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const char* YYMARKER;
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const char *d0, *d1;
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const char *s0, *s1;
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const char *f0, *f1;
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static constexpr int Root { -1 };
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TimeRange range { Root, nullptr };
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int t0 { Root };
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int t1 { Root };
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decltype(Payload::time) time;
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ParseResult<Payload> out;
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auto update_range = [&](const char* ptr, int tag) {
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if (ptr && !range.start) {
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time.reserve(std::count(view.begin(), view.end(), ','));
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range.start = ptr;
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}
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if (ptr && range.start) {
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if (range.tag != tag) {
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range.start = ptr;
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range.tag = tag;
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}
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if (ptr - range.start) {
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time.push_back(payload::time(StringView{range.start, ptr}));
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}
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}
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};
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#line 70 "espurna\\ir_parse_raw.re.ipp"
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const char *yyt1;
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const char *yyt2;
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const char *yyt3;
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const char *yyt4;
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#line 66 "espurna\\ir_parse_raw.re"
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#line 78 "espurna\\ir_parse_raw.re.ipp"
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int yyt5 { Root };
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int yyt6 { Root };
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#line 67 "espurna\\ir_parse_raw.re"
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#line 85 "espurna\\ir_parse_raw.re.ipp"
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{
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char yych;
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yych = *YYCURSOR;
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switch (yych) {
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case '0' ... '9':
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yyt1 = YYCURSOR;
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goto yy4;
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default:
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if (YYLIMIT <= YYCURSOR) goto yy19;
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goto yy2;
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}
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yy2:
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++YYCURSOR;
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yy3:
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#line 90 "espurna\\ir_parse_raw.re"
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{ goto return_out; }
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#line 102 "espurna\\ir_parse_raw.re.ipp"
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yy4:
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yych = *(YYMARKER = ++YYCURSOR);
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switch (yych) {
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case '0' ... ':': goto yy6;
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default: goto yy3;
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}
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yy5:
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yych = *++YYCURSOR;
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yy6:
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switch (yych) {
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case '0' ... '9': goto yy5;
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case ':': goto yy8;
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default: goto yy7;
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}
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yy7:
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YYCURSOR = YYMARKER;
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goto yy3;
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yy8:
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yych = *++YYCURSOR;
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switch (yych) {
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case '0' ... '9':
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yyt2 = YYCURSOR;
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goto yy9;
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default: goto yy7;
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}
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yy9:
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yych = *++YYCURSOR;
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switch (yych) {
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case '0' ... '9': goto yy9;
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case ':': goto yy11;
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default: goto yy7;
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}
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yy11:
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yych = *++YYCURSOR;
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switch (yych) {
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case '0' ... '9':
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yyt3 = YYCURSOR;
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goto yy12;
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default: goto yy7;
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}
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yy12:
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yych = *++YYCURSOR;
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switch (yych) {
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case '0' ... '9': goto yy12;
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case ':':
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yyt4 = YYCURSOR;
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goto yy14;
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default: goto yy7;
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}
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yy14:
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yych = *++YYCURSOR;
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switch (yych) {
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case '0' ... '9':
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update_range(YYCURSOR, yyt5++);
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goto yy15;
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default: goto yy7;
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}
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yy15:
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yych = *++YYCURSOR;
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switch (yych) {
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case ',':
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update_range(YYCURSOR, yyt6++);
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goto yy18;
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case '0' ... '9': goto yy15;
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default:
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update_range(YYCURSOR, yyt6++);
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goto yy17;
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}
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yy17:
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f0 = yyt1;
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s0 = yyt2;
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d0 = yyt3;
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d1 = yyt4;
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t0 = yyt5;
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t1 = yyt6;
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f1 = yyt2 - 1;
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s1 = yyt3 - 1;
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#line 83 "espurna\\ir_parse_raw.re"
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{
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if ((t0 != Root) && (t1 != Root)) {
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goto update_out;
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}
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goto return_out;
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}
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#line 187 "espurna\\ir_parse_raw.re.ipp"
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yy18:
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yych = *++YYCURSOR;
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switch (yych) {
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case '0' ... '9':
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update_range(YYCURSOR, yyt5++);
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goto yy15;
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default: goto yy17;
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}
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yy19:
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#line 91 "espurna\\ir_parse_raw.re"
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{ goto return_out; }
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#line 199 "espurna\\ir_parse_raw.re.ipp"
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}
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#line 92 "espurna\\ir_parse_raw.re"
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update_out:
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{
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out = prepare(
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StringView{f0, f1},
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StringView{s0, s1},
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StringView{d0, d1},
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std::move(time));
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}
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return_out:
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return out;
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}
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