update parser

1 files changed, 38 insertions, 0 deletions

diff --git a/script/parser/tokens.lua b/script/parser/tokens.lua
new file mode 100644
index 00000000..958f292e
--- /dev/null
+++ b/script/parser/tokens.lua
@@ -0,0 +1,38 @@
+local m = require 'lpeglabel'
+
+local Sp     = m.S' \t'
+local Nl     = m.P'\r\n' + m.S'\r\n'
+local Number = m.R'09'^1
+local Word   = m.R('AZ', 'az', '__', '\x80\xff') * m.R('AZ', 'az', '09', '__', '\x80\xff')^0
+local Symbol = m.P'=='
+            +  m.P'~='
+            +  m.P'--'
+            +  m.P'<<'
+            +  m.P'>>'
+            +  m.P'<='
+            +  m.P'>='
+            +  m.P'//'
+            +  m.P'...'
+            +  m.P'..'
+            +  m.P'::'
+            -- incorrect
+            +  m.P'!='
+            +  m.P'&&'
+            +  m.P'||'
+            +  m.P'/*'
+            +  m.P'*/'
+            +  m.P'+='
+            +  m.P'-='
+            +  m.P'*='
+            +  m.P'/='
+            -- singles
+            +  m.S'+-*/!#%^&()={}[]|\\\'":;<>,.?~`'
+local Unknown = (1 - Number - Word - Symbol - Sp - Nl)^1
+local Token   = m.Cp() * m.C(Nl + Number + Word + Symbol + Unknown)
+
+local Parser  = m.Ct((Sp^1 + Token)^0)
+
+return function (lua)
+    local results = Parser:match(lua)
+    return results
+end