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| let number-regexp = | |
| do | |
| hex-digit := "[0-9a-fA-F]" | |
| bin-digit := "[01]" | |
| oct-digit := "[0-7]" | |
| fn re-or (...) | |
| let result = | |
| .. "(" | |
| va-lifold "" | |
| inline (index _. value computed-result) | |
| if (index < ((va-countof ...) - 1)) | |
| .. computed-result value "|" | |
| else | |
| .. computed-result value | |
| ... | |
| ")" | |
| fn number-dot-number (prefix class) | |
| let class+ = (class .. "+") | |
| .. prefix (re-or (class+ .. "\\.") ("\\." .. class+) (.. class+ "\\." class+)) | |
| let number-regexp = | |
| .. "^[+-]?" | |
| re-or | |
| # no fractional part | |
| (.. | |
| (re-or | |
| "\\d+" | |
| (.. "0b" bin-digit "+") | |
| (.. "0o" oct-digit "+") | |
| (.. "0x" hex-digit "+")) | |
| "(\\:" | |
| (re-or | |
| ("f" .. (re-or "32" "64")) | |
| ("[ui]" .. (re-or "8" "16" "32" "64")) | |
| "usize") ")?") | |
| # floats with fractional part | |
| (.. | |
| (re-or | |
| (number-dot-number "" "\\d") | |
| (number-dot-number "0b" bin-digit) | |
| (number-dot-number "0o" oct-digit) | |
| (number-dot-number "0x" hex-digit)) | |
| "([eE][+-]\\d+)?" | |
| (re-or ":f32" ":f64") "?") | |
| # token interrupting characters | |
| "(?=[,'()\\[\\]{} \\n]|$)" | |
| # output: | |
| ^[+-]?((\d+|0b[01]+|0o[0-7]+|0x[0-9a-fA-F]+)(\:(f(32|64)|[ui](8|16|32|64)|usize))?|((\d+\.|\.\d+|\d+\.\d+)|0b([01]+\.|\.[01]+|[01]+\.[01]+)|0o([0-7]+\.|\.[0-7]+|[0-7]+\.[0-7]+)|0x([0-9a-fA-F]+\.|\.[0-9a-fA-F]+|[ | |
| 0-9a-fA-F]+\.[0-9a-fA-F]+))([eE][+-]\d+)?(:f32|:f64)?)(?=[,'()\[\]{} \n]|$) |
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