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66 lines
1.6 KiB
66 lines
1.6 KiB
#include "lel.hpp"
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#include <fmt/core.h>
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#include <iostream>
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namespace lel {
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%%{
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machine Parser;
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alphtype char;
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action token {tk = input.substr(start - begin, fpc - start); }
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action col {}
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action ltab { grid.push_back(Row()); }
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action valign { cur.bottom = fc == '.'; }
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action id { id(input.substr(start - begin, fpc - start)); }
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action row { cur.col = 0; cur.row++; }
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action align { cur.right = fc == '>'; }
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action setwidth {cur.max_w = std::stoi(tk); }
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action setheight { cur.max_h = std::stoi(tk); }
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action expand { cur.expand = true; }
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action center { cur.center = true; }
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action percent { cur.percent = true; }
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col = "|" $col;
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ltab = "[" $ltab;
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rtab = "]" $row;
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valign = ("^" | ".") $valign;
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expand = "*" $expand;
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center = "=" $center;
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percent = "%" $percent;
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halign = ("<" | ">") $align;
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number = digit+ >{ start = fpc; } %token;
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setw = ("(" number %setwidth ("," number %setheight)? ")") ;
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modifiers = (percent | center | expand | valign | halign | setw);
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id = modifiers* ((alpha | '_')+ :>> (alnum | '_')*) >{start = fpc;} %id;
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row = space* ltab space* id space* (col space* id space*)* space* rtab space*;
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main := row+;
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}%%
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%% write data;
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bool Parser::parse(std::string input) {
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reset();
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int cs = 0;
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const char *start = nullptr;
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const char *begin = input.data();
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const char *p = input.data();
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const char *pe = p + input.size();
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std::string tk;
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%% write init;
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%% write exec;
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bool good = pe - p == 0;
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if(good) {
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finalize();
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} else {
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fmt::println("error at");
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std::cout << p;
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}
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return good;
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}
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}
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