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|
-- Nomsu version 2
file (FileChunks):
{:curr_indent: ' '* :}
("#!" (!"nomsu" [^%nl])* "nomsu" %ws+ "-V" %ws* {:version: ([0-9.]+ -> tonumber) :} [^%nl]*)?
comment? blank_lines?
(chunk (nl_nodent section_division nl_nodent chunk)*)?
blank_lines?
%ws* (!! .+ -> "Parse error" !!)?
nodent: =curr_indent !(" ")
indent: =curr_indent " "
blank_lines: %nl ((nodent comment / %ws*) %nl)*
eol: %ws* eol_comment? (!. / &%nl)
nl_nodent: blank_lines nodent
nl_indent: blank_lines {:curr_indent: indent :} (comment nl_nodent)?
comment:
"#" (({} {~ [^%nl]* ((%nl (!indent %ws* %nl)*) (indent -> '') [^%nl]*)* ~} %userdata) => add_comment)
eol_comment:
"#" (({} {[^%nl]*} %userdata) => add_comment)
section_division: ("~")^+3 eol
inline_block (Block):
":" %ws* ((inline_statement (%ws* ";" %ws* inline_statement)*) / !(eol nl_indent))
chunk (Block):
statement (nl_nodent statement)*
indented_block (Block):
":" eol nl_indent statement (nl_nodent statement)*
statement: (action / expression) (eol / (!! [^%nl]+ -> "Unexpected character while parsing line" !!))
inline_statement: (inline_action / inline_expression)
noindex_inline_expression:
number / variable / inline_text / inline_list / inline_dict / inline_nomsu
/ ( "("
%ws* (inline_block / inline_action / inline_expression) %ws*
(%ws* ',' %ws* (inline_block / inline_action / inline_expression) %ws*)*
(")"
/ (!! eol -> 'Line ended without finding a closing )-parenthesis' !!)
/ (!! [^%nl]+ -> 'Unexpected character while parsing subexpression' !!)
)
)
inline_expression: index_chain / noindex_inline_expression
indented_expression:
indented_text / indented_nomsu / indented_list / indented_dict / indented_block / ({|
"(..)" nl_indent
(action / expression) (nl_nodent comment)*
(eol / (!! [^%nl]+ -> "Unexpected character while parsing indented expression" !!))
|} -> unpack)
expression:
inline_expression / indented_expression / inline_block
inline_nomsu (EscapedNomsu): "\" inline_expression
indented_nomsu (EscapedNomsu):
"\" (noindex_inline_expression / indented_expression)
index_chain (IndexChain):
noindex_inline_expression ("." (text_word / noindex_inline_expression))+
-- Actions need either at least 1 word, or at least 2 tokens
inline_action (Action):
!section_division
( ((smushed_action / inline_expression) (%ws* (smushed_action / inline_expression / word))+)
/ (word (%ws* (smushed_action / inline_expression / word))*))
(%ws* inline_block)?
action (Action):
!section_division
( ((smushed_action / expression) ((nl_nodent "..")? %ws* (smushed_action / expression / word))+)
/ (word ((nl_nodent "..")? %ws* (smushed_action / expression / word))*))
smushed_action (Action):
!section_division
(index_chain / noindex_inline_expression / word+) (index_chain / noindex_inline_expression / word+ / "(" %ws* ")")+
word: !number { %operator_char+ / %ident_char+ }
text_word (Text): word
inline_text (Text):
!('".."' eol)
'"'
({~ (('\"' -> '"') / ('\\' -> '\') / %escaped_char / [^%nl\"])+ ~}
/ inline_text_interpolation)*
('"'
/ (!! eol -> 'Line ended before finding a closing double quotation mark' !!)
/ (!! [^%nl]+ -> 'Unexpected character while parsing Text' !!))
inline_text_interpolation:
"\" (
variable / inline_list / inline_dict / inline_text
/ ("("
%ws* (inline_block / inline_action / inline_expression) %ws*
(%ws* ',' %ws* (inline_block / inline_action / inline_expression) %ws*)*
(")"
/ (!! eol -> 'Line ended without finding a closing )-parenthesis' !!)
/ (!! [^%nl]+ -> 'Unexpected character while parsing Text interpolation' !!)))
)
indented_text (Text):
'".."' eol %nl {%nl*} {:curr_indent: indent :}
(indented_plain_text / text_interpolation / {~ %nl+ (=curr_indent -> "") ~})*
(!! [^%nl]+ -> "Unexpected character while parsing Text" !!)?
indented_plain_text (Text):
{~ (("\\" -> "\") / (("\" blank_lines =curr_indent "..") -> "") / (!text_interpolation "\") / [^%nl\]+)+
(%nl+ (=curr_indent -> ""))* ~}
text_interpolation:
inline_text_interpolation / ("\" indented_expression blank_lines =curr_indent "..")
number (Number): (("-"? (([0-9]+ "." [0-9]+) / ("." [0-9]+) / ([0-9]+)))-> tonumber)
-- Variables can be nameless (i.e. just %) and can only contain identifier chars.
-- This ensures you don't get weird parsings of `%x+%y` or `%'s thing`.
variable (Var): "%" {%ident_char*}
inline_list (List):
!('[..]')
"[" %ws*
(inline_list_item (%ws* ',' %ws* inline_list_item)* (%ws* ',')?)? %ws*
("]" / (","? (
(!! eol -> "Line ended before finding a closing ]-bracket" !!)
/(!! [^%nl]+ -> "Unexpected character while parsing List" !!)
)))
indented_list (List):
"[..]" eol nl_indent
list_line (nl_nodent list_line)* (nl_nodent comment)*
(","? (!! [^%nl]+ -> "Unexpected character while parsing List" !!))?
list_line:
(inline_list_item %ws* "," %ws*)+ eol
/ (inline_list_item %ws* "," %ws*)* (action / expression) eol
inline_list_item: inline_block / inline_action / inline_expression
inline_dict (Dict):
!('{..}')
"{" %ws*
(inline_dict_entry (%ws* ',' %ws* inline_dict_entry)*)? %ws*
("}" / (","? (
(!! eol -> "Line ended before finding a closing }-brace" !!)
/ (!! [^%nl]* -> "Unexpected character while parsing Dictionary" !!)
)))
indented_dict (Dict):
"{..}" eol nl_indent
dict_line (nl_nodent dict_line)* (nl_nodent comment)*
(","? (!! [^%nl]+ -> "Unexpected character while parsing Dictionary" !!))?
dict_line:
(inline_dict_entry %ws* "," %ws*)+ eol
/ (inline_dict_entry %ws* "," %ws*)* dict_entry eol
dict_entry(DictEntry):
dict_key (%ws* ":" %ws* (action / expression))?
inline_dict_entry(DictEntry):
dict_key (%ws* ":" %ws* (inline_action / inline_expression)?)?
dict_key:
text_word / inline_expression
|
