Wolfram Language Paclet Repository
Community-contributed installable additions to the Wolfram Language
Wolfram`Parser`Languages`Brainfuck`
BrainfuckAST  |
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▪
BrainfuckAST
▪
The eight commands are the only significant characters. Each of the first six becomes a holding its literal token; every other character is a comment and is dropped from the tree.
>
<
+
-
.
,
[
]
"Command"
▪
A matched … pair becomes a whose children are the parsed body. Loops nest arbitrarily, so a can itself contain .
[
]
["Loop",{…}]
GroupNode["Loop",…]
GroupNode["Loop",…]
▪
runs the same grammar over instead, compiling the program to an executable closure and returning its output. The grammar is written once; only the algebra differs.
Examples
(4)
Basic Examples
(1)
In[1]:=
 | BrainfuckAST |
Out[1]=
ContainerNode[String,{LeafNode[Command,+,Source{{1,1},{1,2}}],GroupNode[Loop,{LeafNode[Command,>,Source{{1,3},{1,4}}]},Source{{1,3},{1,4}}]},Source{{1,1},{1,4}}]
Every node carries a span of startLinestartColendLineendCol ( LineColumn). Each command spans its single character, and the spans its content - here the at columns -, with the enclosing and delimiters excluded.
"Source"
{{
,
},{
,
}}
CodeParser
GroupNode["Loop",…]
>
3
4
[
]
Every non-command character is a comment and leaves no trace - here only the survives:
+
In[2]:=
| BrainfuckAST |
Out[2]=
ContainerNode[String,{LeafNode[Command,+,Source{{1,2},{1,3}}]},Source{{1,2},{1,3}}]
In[3]:=
| BrainfuckRun |
Out[3]=
A
Scope
(1)
Properties & Relations
(1)
Possible Issues
(1)
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""