Bruce Hill
7d2b7199d8
literal") shorthand, deprecating Lua value, and more use of Lua "..." with text interpolations.
64 lines
2.0 KiB
Plaintext
64 lines
2.0 KiB
Plaintext
#!/usr/bin/env nomsu -V4.8.10
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#
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This file contains some definitions of text escape sequences, including ANSI console
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color codes.
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use "core/metaprogramming.nom"
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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test:
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assume "\[1, 2, 3]" == "[1, 2, 3]"
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assume "foo = \(1 + 2)!" == "foo = 3!"
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assume "one\ntwo" == "\
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..one
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two"
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assume "nogap" == "\
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..no\
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..gap"
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assume (["x", "y"]::joined with ",") == "x,y"
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assume (["x", "y"]::joined) == "xy"
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assume ("BAR"::byte 2) == 65
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assume ("BAR"::bytes 1 to 2) == [66, 65]
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assume ("asdf"::capitalized) == "Asdf"
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assume ("asdf"::uppercase) == "ASDF"
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assume ("asdf"::with "s" -> "X") == "aXdf"
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assume ("one\ntwo\n"::lines) == ["one", "two", ""]
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(%spec とは %body) parses as (%spec means %body)
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test:
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%こんにちは = "こんにちは"
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(% と言う) とは "\(%)世界"
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assume (%こんにちは と言う) == "こんにちは世界"
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(%expr for %match in %text matching %patt) compiles to:
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define mangler
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return (..)
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Lua "\
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..(function()
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local \(mangle "comprehension") = _List{}
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for \(%match as lua expr) in (\(%text as lua expr)):gmatch(\(..)
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%patt as lua expr
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..) do
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\(mangle "comprehension")[#\(mangle "comprehension")+1] = \(%expr as lua statements)
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end
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return \(mangle "comprehension")
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end)()"
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test:
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assume "\n" == (newline)
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# Text literals
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lua> "\
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..do
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local escapes = {
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nl="\\\\n", newline="\\\\n", tab="\\\\t", bell="\\\\a", cr="\\\\r",
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["carriage return"]="\\\\r", backspace="\\\\b", ["form feed"]="\\\\f",
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formfeed="\\\\f", ["vertical tab"]="\\\\v",
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};
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for name, e in pairs(escapes) do
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local lua = "'"..e.."'"
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compile.action[name] = function(compile, tree)
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return LuaCode(tree.source, lua)
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end
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end
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end"
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