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nullParser -- a terminal parser that returns the value nil

Description

i1 : nullParser null

o1 = nil

o1 : Symbol

i2 : nullParser "x" === null

o2 = true

i3 : nullParser null === nil

o3 = true

Code

../Parsing.m2:59:41-59:68: --source code:
terminalParser = val -> new Parser from (c -> if c === null then val)
| symbol  class   value  location of symbol
| ------  -----   -----  ------------------       
| val     Symbol  nil    ../Parsing.m2:59:17-59:20

See also

nil -- a symbol a parser may return to indicate acceptance of the empty string of tokens

For the programmer

The object nullParser is a parser.

The source of this document is in Parsing.m2:333:0.