step1_read_print.mal

;; Testing read of numbers
1
;=>1
7
;=>7
  7   
;=>7
-123
;=>-123


;; Testing read of symbols
+
;=>+
abc
;=>abc
   abc   
;=>abc
abc5
;=>abc5
abc-def
;=>abc-def

;; Testing non-numbers starting with a dash.
-
;=>-
-abc
;=>-abc
->>
;=>->>

;; Testing read of lists
(+ 1 2)
;=>(+ 1 2)
()
;=>()
( )
;=>()
(nil)
;=>(nil)
((3 4))
;=>((3 4))
(+ 1 (+ 2 3))
;=>(+ 1 (+ 2 3))
  ( +   1   (+   2 3   )   )  
;=>(+ 1 (+ 2 3))
(* 1 2)
;=>(* 1 2)
(** 1 2)
;=>(** 1 2)
(* -3 6)
;=>(* -3 6)
(()())
;=>(() ())

;; Test commas as whitespace
(1 2, 3,,,,),,
;=>(1 2 3)


;>>> deferrable=True

;;
;; -------- Deferrable Functionality --------

;; Testing read of nil/true/false
nil
;=>nil
true
;=>true
false
;=>false

;; Testing read of strings
"abc"
;=>"abc"
   "abc"   
;=>"abc"
"abc (with parens)"
;=>"abc (with parens)"
"abc\"def"
;=>"abc\"def"
""
;=>""
"\\"
;=>"\\"
"\\\\\\\\\\\\\\\\\\"
;=>"\\\\\\\\\\\\\\\\\\"
"&"
;=>"&"
"'"
;=>"'"
"("
;=>"("
")"
;=>")"
"*"
;=>"*"
"+"
;=>"+"
","
;=>","
"-"
;=>"-"
"/"
;=>"/"
":"
;=>":"
";"
;=>";"
"<"
;=>"<"
"="
;=>"="
">"
;=>">"
"?"
;=>"?"
"@"
;=>"@"
"["
;=>"["
"]"
;=>"]"
"^"
;=>"^"
"_"
;=>"_"
"`"
;=>"`"
"{"
;=>"{"
"}"
;=>"}"
"~"
;=>"~"
"!"
;=>"!"

;; Testing reader errors
(1 2
;/.*(EOF|end of input|unbalanced).*
[1 2
;/.*(EOF|end of input|unbalanced).*
{"a" 2
;/.*(EOF|end of input|unbalanced).*

;;; These should throw some error with no return value
"abc
;/.*(EOF|end of input|unbalanced).*
"
;/.*(EOF|end of input|unbalanced).*
"\"
;/.*(EOF|end of input|unbalanced).*
"\\\\\\\\\\\\\\\\\\\"
;/.*(EOF|end of input|unbalanced).*
(1 "abc
;/.*(EOF|end of input|unbalanced).*
(1 "abc"
;/.*(EOF|end of input|unbalanced).*

;; Testing read of quoting
'1
;=>(quote 1)
'(1 2 3)
;=>(quote (1 2 3))
`1
;=>(quasiquote 1)
`(1 2 3)
;=>(quasiquote (1 2 3))
`(a (b) c)
;=>(quasiquote (a (b) c))
~1
;=>(unquote 1)
~(1 2 3)
;=>(unquote (1 2 3))
`(1 ~a 3)
;=>(quasiquote (1 (unquote a) 3))
~@(1 2 3)
;=>(splice-unquote (1 2 3))


;; Testing keywords
:kw
;=>:kw
(:kw1 :kw2 :kw3)
;=>(:kw1 :kw2 :kw3)

;; Testing read of vectors
[+ 1 2]
;=>[+ 1 2]
[]
;=>[]
[ ]
;=>[]
[[3 4]]
;=>[[3 4]]
[+ 1 [+ 2 3]]
;=>[+ 1 [+ 2 3]]
  [ +   1   [+   2 3   ]   ]  
;=>[+ 1 [+ 2 3]]
([])
;=>([])

;; Testing read of hash maps
{}
;=>{}
{ }
;=>{}
{"abc" 1}
;=>{"abc" 1}
{"a" {"b" 2}}
;=>{"a" {"b" 2}}
{"a" {"b" {"c" 3}}}
;=>{"a" {"b" {"c" 3}}}
{  "a"  {"b"   {  "cde"     3   }  }}
;=>{"a" {"b" {"cde" 3}}}
;;; The regexp sorcery here ensures that each key goes with the correct
;;; value and that each key appears only once.
{"a1" 1 "a2" 2 "a3" 3}
;/{"a([1-3])" \1 "a(?!\1)([1-3])" \2 "a(?!\1)(?!\2)([1-3])" \3}
{  :a  {:b   {  :cde     3   }  }}
;=>{:a {:b {:cde 3}}}
{"1" 1}
;=>{"1" 1}
({})
;=>({})

;; Testing read of comments
 ;; whole line comment (not an exception)
1 ; comment after expression
;=>1
1; comment after expression
;=>1

;; Testing read of @/deref
@a
;=>(deref a)

;; Colon character inside a symbol
a:
;=>a:

;>>> soft=True
;>>> optional=True
;;
;; -------- Optional Functionality --------

;; Testing read of ^/metadata
^{"a" 1} [1 2 3]
;=>(with-meta [1 2 3] {"a" 1})
^2 [1 2 3]
;=>(with-meta [1 2 3] 2)

;; Non alphanumeric characters in strings
;;; \t is not specified enough to be tested
"\n"
;=>"\n"
"#"
;=>"#"
"$"
;=>"$"
"%"
;=>"%"
"."
;=>"."
"\\"
;=>"\\"
"|"
;=>"|"

;; Non alphanumeric characters in comments
1;!
;=>1
1;"
;=>1
1;#
;=>1
1;$
;=>1
1;%
;=>1
1;'
;=>1
1;\
;=>1
1;\\
;=>1
1;\\\
;=>1
1;`
;=>1
;;; Hopefully less problematic characters
1; &()*+,-./:;<=>?@[]^_{|}~
;=>1