Wolfram Language Paclet Repository
Community-contributed installable additions to the Wolfram Language
Wolfram`Parser`
ContainerNode  |
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▪
ContainerNode
CodeParser
sown
`ContainerNode
CodeParser
▪
Every zoo language function (, , , , ) returns a at the top, so a parsed program has one uniform root regardless of language. The convenience builder produces it.
ContainerNode["String",…]
ASTContainer
▪
children is the list of top-level forms. Most grammars parse a single form (a one-element list), but Lisp reads several top-level s-expressions into several children.
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kind is because the source is a string. meta holds a position spanning the whole parsed program when the root comes from a real parse, and is an empty when you build the node by hand.
"String"
"Source"
Examples
(2)
Basic Examples
(1)
A container built literally holds its kind and the list of top-level forms:
In[1]:=
 | ContainerNode |
 | LeafNode |
Out[1]=
ContainerNode[String,{LeafNode[Integer,1,]},]
Every parse is wrapped in a root - here a single leaf:
ContainerNode["String",…]
In[2]:=
| CalculatorAST |
Out[2]=
ContainerNode[String,{LeafNode[Integer,1,Source{{1,1},{1,2}}]},Source{{1,1},{1,2}}]
A Lisp source with two top-level forms reads as two children of one container:
In[3]:=
| LispAST |
Out[3]=
ContainerNode[String,{LeafNode[Integer,1,Source{{1,1},{1,2}}],LeafNode[Integer,2,Source{{2,1},{2,2}}]},Source{{1,1},{2,2}}]
Properties & Relations
(1)
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