15 lines
397 B
Lua
15 lines
397 B
Lua
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local m = require'lpeglabel'
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function matchPrint(p, s)
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local r, lab, sfail = p:match(s)
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print("r: ", r, "lab: ", lab, "sfail: ", sfail)
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end
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local p = m.P"a"^0 * m.P"b" + m.P"c"
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matchPrint(p, "abc") --> r: 3 lab: nil sfail: nil
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matchPrint(p, "c") --> r: 2 lab: nil sfail: nil
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matchPrint(p, "aac") --> r: nil lab: 0 sfail: c
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matchPrint(p, "xxc") --> r: nil lab: 0 sfail: xxc
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