meander.syntax.beta
any-form?clj/s
(any-form? x)true if x is a symbol beginning with _.
true if x is a symbol beginning with _.
childrenclj/smultimethod
(children node)Return a sequential? of all children of node.
Return a sequential? of all children of node.
defsyntaxclj/s≠macro
(defsyntax name docstring? meta? arglist & body)(defsyntax &form &env & args)EXPERIMENTAL Like defn but for defining new pattern syntax by extending the parser. When parsing, if a seq is encountered starting with a symbol which can be resolved to the created var then the tail of the seq is applied to the var and the result is parsed.
Example
(defsyntax re [regex] `(~'pred (fn [s#] (and (string? s#) (re-matches ~regex s#)))))
(require '[meander.match.beta :as r.match])
(r.match/match "elf" (re #"[a-z]+") :okay!) ;; => :okay
EXPERIMENTAL Like defn but for defining new pattern syntax by
extending the parser. When parsing, if a seq is encountered starting
with a symbol which can be resolved to the created var then the tail
of the seq is applied to the var and the result is parsed.
Example
(defsyntax re [regex]
`(~'pred
(fn [s#]
(and (string? s#)
(re-matches ~regex s#)))))
(require '[meander.match.beta :as r.match])
(r.match/match "elf"
(re #"[a-z]+")
:okay!)
;; => :okay
ground?clj/smultimethod
(ground? node)true if node is ground i.e. it contains no variables or is not a match operator.
true if node is ground i.e. it contains no variables or is not a match operator.
logic-variable-form?clj/s
(logic-variable-form? x)true if x is in the form of a logic variable i.e. a simple symbol with a name beginning with ?.
true if x is in the form of a logic variable i.e. a simple symbol with a name beginning with \?.
logic-variablesclj/s
(logic-variables node)Return all :lvr nodes in node.
Return all :lvr nodes in node.
max-lengthclj/smultimethod
(max-length node)The maximum possible length the pattern described by node can be.
The maximum possible length the pattern described by node can be.
memory-variable-form?clj/s
(memory-variable-form? x)true if x is in the form of a memory variable i.e. a simple symbol with a name beginning with !.
true if x is in the form of a memory variable i.e. a simple symbol with a name beginning with \!.
memory-variablesclj/s
(memory-variables node)Return all :mvr nodes in node.
Return all :mvr nodes in node.
min-lengthclj/smultimethod
(min-length node)The maximum possible length the pattern described by node can be.
The maximum possible length the pattern described by node can be.
proper-subnodesclj/s
(proper-subnodes node)Return the all subnodes in node excluding node.
Return the all subnodes in node excluding node.
search?clj/smultimethod
(search? node)true if node represents a search, false otherwise.
true if node represents a search, false otherwise.
subnodesclj/s
(subnodes node)Return a sequence of all subnodes of node.
Return a sequence of all subnodes of node.
unparseclj/smultimethod
(unparse node)In pre-order fashion rewrite a node into a Clojure form.
In pre-order fashion rewrite a node into a Clojure form.
variable-length?clj/s
(variable-length? node)true if node may have a variable length.
true if node may have a variable length.
variablesclj/s
(variables node)Return all :lvr and :mvr nodes in node.
Return all :lvr and :mvr nodes in node.
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