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-rw-r--r--lualibs-lpeg.lua72
1 files changed, 46 insertions, 26 deletions
diff --git a/lualibs-lpeg.lua b/lualibs-lpeg.lua
index 99b4bbb..7be86d3 100644
--- a/lualibs-lpeg.lua
+++ b/lualibs-lpeg.lua
@@ -79,13 +79,22 @@ patterns.endofstring = endofstring
patterns.beginofstring = alwaysmatched
patterns.alwaysmatched = alwaysmatched
-local digit, sign = R('09'), S('+-')
+local sign = S('+-')
+local zero = P('0')
+local digit = R('09')
+local octdigit = R("07")
+local lowercase = R("az")
+local uppercase = R("AZ")
+local underscore = P("_")
+local hexdigit = digit + lowercase + uppercase
local cr, lf, crlf = P("\r"), P("\n"), P("\r\n")
local newline = crlf + S("\r\n") -- cr + lf
local escaped = P("\\") * anything
local squote = P("'")
local dquote = P('"')
local space = P(" ")
+local period = P(".")
+local comma = P(",")
local utfbom_32_be = P('\000\000\254\255')
local utfbom_32_le = P('\255\254\000\000')
@@ -143,23 +152,8 @@ local collapser = Cs(spacer^0/"" * nonspacer^0 * ((spacer^0/" " * nonspac
patterns.stripper = stripper
patterns.collapser = collapser
-patterns.digit = digit
-patterns.sign = sign
-patterns.cardinal = sign^0 * digit^1
-patterns.integer = sign^0 * digit^1
-patterns.unsigned = digit^0 * P('.') * digit^1
-patterns.float = sign^0 * patterns.unsigned
-patterns.cunsigned = digit^0 * P(',') * digit^1
-patterns.cfloat = sign^0 * patterns.cunsigned
-patterns.number = patterns.float + patterns.integer
-patterns.cnumber = patterns.cfloat + patterns.integer
-patterns.oct = P("0") * R("07")^1
-patterns.octal = patterns.oct
-patterns.HEX = P("0x") * R("09","AF")^1
-patterns.hex = P("0x") * R("09","af")^1
-patterns.hexadecimal = P("0x") * R("09","AF","af")^1
-patterns.lowercase = R("az")
-patterns.uppercase = R("AZ")
+patterns.lowercase = lowercase
+patterns.uppercase = uppercase
patterns.letter = patterns.lowercase + patterns.uppercase
patterns.space = space
patterns.tab = P("\t")
@@ -167,12 +161,12 @@ patterns.spaceortab = patterns.space + patterns.tab
patterns.newline = newline
patterns.emptyline = newline^1
patterns.equal = P("=")
-patterns.comma = P(",")
-patterns.commaspacer = P(",") * spacer^0
-patterns.period = P(".")
+patterns.comma = comma
+patterns.commaspacer = comma * spacer^0
+patterns.period = period
patterns.colon = P(":")
patterns.semicolon = P(";")
-patterns.underscore = P("_")
+patterns.underscore = underscore
patterns.escaped = escaped
patterns.squote = squote
patterns.dquote = dquote
@@ -187,7 +181,33 @@ patterns.singlequoted = squote * patterns.nosquote * squote
patterns.doublequoted = dquote * patterns.nodquote * dquote
patterns.quoted = patterns.doublequoted + patterns.singlequoted
-patterns.propername = R("AZ","az","__") * R("09","AZ","az", "__")^0 * endofstring
+patterns.digit = digit
+patterns.octdigit = octdigit
+patterns.hexdigit = hexdigit
+patterns.sign = sign
+patterns.cardinal = digit^1
+patterns.integer = sign^-1 * digit^1
+patterns.unsigned = digit^0 * period * digit^1
+patterns.float = sign^-1 * patterns.unsigned
+patterns.cunsigned = digit^0 * comma * digit^1
+patterns.cfloat = sign^-1 * patterns.cunsigned
+patterns.number = patterns.float + patterns.integer
+patterns.cnumber = patterns.cfloat + patterns.integer
+patterns.oct = zero * octdigit^1
+patterns.octal = patterns.oct
+patterns.HEX = zero * P("X") * (digit+uppercase)^1
+patterns.hex = zero * P("x") * (digit+lowercase)^1
+patterns.hexadecimal = zero * S("xX") * hexdigit^1
+
+patterns.hexafloat = sign^-1
+ * zero * S("xX")
+ * (hexdigit^0 * period * hexdigit^1 + hexdigit^1 * period * hexdigit^0 + hexdigit^1)
+ * (S("pP") * sign^-1 * hexdigit^1)^-1
+patterns.decafloat = sign^-1
+ * (digit^0 * period * digit^1 + digit^1 * period * digit^0 + digit^1)
+ * S("eE") * sign^-1 * digit^1
+
+patterns.propername = (uppercase + lowercase + underscore) * (uppercase + lowercase + underscore + digit)^0 * endofstring
patterns.somecontent = (anything - newline - space)^1 -- (utf8char - newline - space)^1
patterns.beginline = #(1-newline)
@@ -854,9 +874,9 @@ end
-- moved here (before util-str)
-local digit = R("09")
-local period = P(".")
-local zero = P("0")
+----- digit = R("09")
+----- period = P(".")
+----- zero = P("0")
local trailingzeros = zero^0 * -digit -- suggested by Roberto R
local case_1 = period * trailingzeros / ""
local case_2 = period * (digit - trailingzeros)^1 * (trailingzeros / "")