caption
This commit is contained in:
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2caa6f458b
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7c2c4785e4
@ -146,8 +146,8 @@ int main(int argc, char **argv) {
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}
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printf("Lexing finished: %s on %lu.\n",
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lex_symbols[lex.symbol], lex.line);
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if(lex.symbol != END) { errno = EILSEQ; goto catch; }
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char_array_clear(&entry);
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break; /* fixme */
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}
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int_array_clear(&days);
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23
src/lex.h
23
src/lex.h
@ -5,20 +5,29 @@ int lex_looks_like_month(const char *);
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int lex_looks_like_day(const char *);
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#define LEX_SYMBOL \
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/* Results. */ X(END), X(SYNTAX), X(ILLEGAL), X(NOT_FOUND), \
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/* Text. */ X(PARAGRAPH), X(TEXT), \
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/* Edicts. */ X(SOURCE), X(DEFAULT), X(SIGNIFICANT), X(SCORE), X(MAP), \
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/* Arguments. */ X(ARG_KEYWORD), X(ARG_DATE), X(ARG_NATURAL), \
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X(ARG_FREEFORM)
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\
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/* Results. */ \
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X(END), X(SYNTAX), X(ILLEGAL), X(NOT_FOUND), \
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\
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/* Text. */ \
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X(PARAGRAPH), X(TEXT), X(CAPTION), \
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\
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/* Edicts. */ \
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X(SOURCE), X(DEFAULT), X(SOURCE_RECALL), \
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X(LOCATION), X(LOCATION_RECALL), \
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X(SIGNIFICANT), X(SIGNIFICANT_RECALL), \
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\
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/* Arguments. */ \
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X(ARG_KEYWORD), X(ARG_DATE), X(ARG_NATURAL), X(ARG_FREEFORM)
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#define X(n) n
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struct lex {
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#define X(n) n
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enum lex_symbol { LEX_SYMBOL } symbol;
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#undef X
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int ws_before, new_paragraph;
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const char *s0, *s1;
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size_t line;
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};
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#undef X
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#define X(n) #n
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static const char *const lex_symbols[] = { LEX_SYMBOL };
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#undef X
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@ -72,7 +72,7 @@ int lex_looks_like_day(const char *const a) {
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/* "[edict: expect; there; to; be; args]", in this case, expect would be a
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stack of `size = 5` `EXPECT_KEYWORD`. This mirrors arguments in `LEX_SYMBOL`
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and should also be an `edict_*` in <fn:lex_next> and <fn:expect_pop>. */
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#define EXPECT_HEAD X(keyword, KEYWORD) X(date, DATE)
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#define EXPECT_HEAD X(keyword, KEYWORD) X(date, DATE) X(natural, NATURAL)
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#define EXPECT_CONS Y(freeform, FREEFORM)
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#define EXPECT EXPECT_HEAD EXPECT_CONS
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@ -125,6 +125,15 @@ int lex_next(struct lex *const x) {
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re2c:define:YYGETCONDITION:naked = 1;
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re2c:define:YYSETCONDITION = 'scan.condition = @@;';
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re2c:define:YYSETCONDITION:naked = 1;
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sentinel = "\x00";
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illegal = [\x01-\x08\x0a-\x1f\x7f]; // unix-style control characters
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newline = "\n";
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ws = [ \t];
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glyph = [^\x00-\x1f \x7f];
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keyword = [a-zA-Z_][a-zA-Z0-9_\-]{0,63};
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decimal = "-"? ([1-9][0-9]* | [0])? "." [0-9]+ | [1-9][0-9]* | [0];
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natural = [1-9][0-9]*;
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date = "-"? natural "-" [0-1][0-9] "-" [0-1][0-9];
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*/
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const char *s0, *s1;
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/*!stags:re2c format = 'const char *@@;\n'; */
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@ -133,39 +142,36 @@ int lex_next(struct lex *const x) {
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x->s0 = x->s1 = 0;
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scan:
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/*!re2c
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sentinel = "\x00";
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illegal = [\x01-\x08\x0a-\x1f\x7f]; // unix-style control characters
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newline = "\n";
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ws = [ \t];
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glyph = [^\x00-\x1f \x7f];
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<*> illegal { return x->symbol = ILLEGAL, 0; }
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<*> * { return x->symbol = SYNTAX, 0; }
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<line> sentinel { return x->symbol = END, 0; }
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<text, text, image, edict, edict_keyword, edict_date, edict_freeform, edict_end>
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<text, expect_line, expect_caption, text, image, edict, edict_keyword, edict_date, edict_freeform, edict_end>
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sentinel { return x->symbol = ILLEGAL, 0; }
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<expect_line> newline => line { x->line = ++scan.line; goto scan; }
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<line> newline { x->line = ++scan.line; return x->symbol = PARAGRAPH, 1; }
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<line> "![" :=> image
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<line> "--" :=> source
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<line> "->" :=> location
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<line> "[" :=> edict
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<line> "" / glyph :=> text
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<line> * { return x->symbol = SYNTAX, 1; }
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<expect_caption> ws* @s0 ([^] \ (sentinel | illegal | newline | ws))
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([^] \ (sentinel | illegal | newline))* @s1 ws* / newline => expect_line
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{ x->s0 = s0, x->s1 = s1; return x->symbol = CAPTION, 1; }
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<text> newline => line { x->line = ++scan.line; goto scan; }
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<text> ws+ { goto scan; }
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<text> @s0 glyph+ @s1 { x->s0 = s0, x->s1 = s1;
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return x->symbol = TEXT, 1; }
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<text> @s0 glyph+ @s1
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{ x->s0 = s0, x->s1 = s1; return x->symbol = TEXT, 1; }
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decimal = "-"? ([1-9][0-9]* | [0])? "." [0-9]+ | [1-9][0-9]* | [0];
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<source> @s0 keyword @s1 => expect_line
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{ x->s0 = s0, x->s1 = s1; return x->symbol = SOURCE_RECALL, 1; }
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<image> ws* "osm" ws* "](geo:" @s0 decimal "," @s1 decimal ")" => text {
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x->symbol = MAP, x->s0 = s0, x->s1 = s1;
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printf("Got a map.\n");
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return 1;
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}
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<image> * { printf("image(broken)\n");return 0; }
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<location> "" / "![" :=> map
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<location> @s0 keyword @s1 => expect_line
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{ x->s0 = s0, x->s1 = s1; return x->symbol = LOCATION_RECALL, 1; }
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//
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natural = [1-9][0-9]*;
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id = [a-zA-Z_][a-zA-Z_\-0-9]{0,63};
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date = "-"? natural "-" [0-1][0-9] "-" [0-1][0-9];
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<map> "![" ws* "osm" ws* "](geo:" @s0 decimal "," @s1 decimal ")" ws*
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=> expect_caption
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{ x->s0 = s0, x->s1 = s1; return x->symbol = LOCATION, 1; }
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<edict> "source"
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{ if(scan.is_ws_expected || scan.edict.size)
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@ -181,12 +187,12 @@ scan:
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scan.is_ws_expected = 1, scan.is_source = 0;
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return x->symbol = DEFAULT, 1; }
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// score
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<edict> "significant"
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{ if(scan.is_ws_expected || scan.edict.size)
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return x->symbol = SYNTAX, 0;
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scan.is_ws_expected = 1;
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scan.edict.size = 2;
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scan.edict.size = 3;
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scan.edict.expect[2] = EXPECT_NATURAL;
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scan.edict.expect[1] = EXPECT_FREEFORM;
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scan.edict.expect[0] = EXPECT_DATE;
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return x->symbol = SIGNIFICANT, 1; }
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@ -195,28 +201,30 @@ scan:
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return x->symbol = SYNTAX, 0;
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scan.is_ws_expected = 1;
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x->s0 = s0, x->s1 = s1;
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return x->symbol = SCORE, 1; }
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return x->symbol = SIGNIFICANT_RECALL, 1; }
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<edict> ws+ { scan.is_ws_expected = 0; goto scan; }
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<edict> ":"
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{ if(!scan.edict.size) return x->symbol = SYNTAX, 0;
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scan.is_ws_expected = 0, scan.is_source = 0;
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expect_pop(); goto scan; }
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<! edict_keyword, edict_date, edict_freeform> { expect_pop(); }
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<edict_keyword> ws* @s0 id @s1 ws* ";"? / "]"?
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{ x->s0 = s0, x->s1 = s1;
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<edict_keyword> ws* @s0 keyword @s1 ws* ";"?
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{ x->s0 = s0, x->s1 = s1; expect_pop();
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return x->symbol = ARG_KEYWORD, 1; }
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<edict_date> ws* @s0 date @s1 ws* ";"? / "]"?
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{ x->s0 = s0, x->s1 = s1;
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<edict_date> ws* @s0 date @s1 ws* ";"?
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{ x->s0 = s0, x->s1 = s1; expect_pop();
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return x->symbol = ARG_DATE, 1; }
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<edict_natural> ws* @s0 natural @s1 ws* ";"?
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{ x->s0 = s0, x->s1 = s1; expect_pop();
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return x->symbol = ARG_NATURAL, 1; }
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// fixme!
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<edict_freeform> ws* @s0
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[^ \t\n\r\v\f;[\]\x00][^\t\n\r\v\f;[\]\x00]*[^ \t\n\r\v\f;[\]\x00]*
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@s1 ws* ";"? / "]"?
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{ x->s0 = s0, x->s1 = s1;
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{ x->s0 = s0, x->s1 = s1; expect_pop();
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return x->symbol = ARG_FREEFORM, 1; }
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<edict, edict_end> "]" => text
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{ if(scan.edict.size) return 0;
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goto scan; }
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{ if(scan.edict.size) return 0; goto scan; }
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<edict, edict_keyword, edict_date, edict_freeform, edict_end> *
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{ return x->symbol = SYNTAX, 0; }
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*/
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