64 lines
1.6 KiB
Lua
64 lines
1.6 KiB
Lua
local bp = require 'bp'
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local function repr(obj)
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if type(obj) == 'table' then
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local ret = {}
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for k,v in pairs(obj) do table.insert(ret, ("%s=%s"):format(k, repr(v))) end
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return ("{%s}"):format(table.concat(ret,","))
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elseif type(obj) == 'string' then
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return string.format("%q", obj)
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else
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return tostring(obj)
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end
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end
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print("Matching:")
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print(bp.match(".", "ABC"))
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print(bp.match(".", "ABC", 2))
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print(bp.match(".", "ABC", 3))
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print(bp.match(".", "ABC", 4) or "no match")
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print(bp.match(".", "ABC", 5) or "no match")
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for m in bp.matches("(*`a-z) => '(@0)'", "one two three") do
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print(repr(m))
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end
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print(("Replacing: %q (%d replacements)"):format(bp.replace("+`a-z", "(@0)", "one two three")))
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print("Captures:")
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local m = bp.match("@first=+`a-z _ @second=(+`a-z => 'XX@0XX') _ @+`a-z _ @last=+`a-z", "one two three four")
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print(repr(m))
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local m = bp.match("@dup=+`a-z _ @dup=+`a-z _ @two=(@a=+`a-z _ @b=+`a-z)", "one two three four")
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print(repr(m))
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print("Testing parse errors:")
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local ok, msg = pcall(function()
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bp.match(".;//;;; wtf", "xxx")
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end)
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if not ok then print(("\x1B[41;30mParse error:\x1B[0;1;31m %s\x1B[m\n"):format(msg)) end
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print("Testing builtins:")
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print(bp.match("parens", "...(foo())..."))
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print("Testing pat objects")
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local pat = bp.compile("+`a-z")
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print(pat)
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print(pat:match("...foo..."))
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print(pat:match("...baz..."))
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print(pat:replace("{@0}", "...baz..."))
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for m in pat:matches("hello world") do
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print(m)
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end
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local ok, err = pcall(function()
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bp.match("nonexistent", "xxx")
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end)
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assert(not ok)
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print("(Successfully caught pattern matching error)")
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