1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
-- Nomsu version 2
file (File):
{:curr_indent: ' '* :}
comment? blank_lines?
(chunk (nl_nodent chunk_delimeter 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)
chunk: block / action / expression
chunk_delimeter: ("~")^+3 eol
inline_block (Block):
inline_statement (%ws* ";" %ws* inline_statement)+
block (Block):
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 / ({|
("(..)")? nl_indent
(block / action / expression) (nl_nodent comment)*
(eol / (!! [^%nl]+ -> "Unexpected character while parsing indented expression" !!))
|} -> unpack)
expression:
inline_expression
/ (":" %ws*
(inline_block / inline_action / inline_expression / (!! '' -> "Missing expression after the ':'" !!)))
/ indented_expression
inline_nomsu (EscapedNomsu): "\" inline_expression
indented_nomsu (EscapedNomsu):
"\" (
noindex_inline_expression
/ (":" %ws*
(inline_block / inline_action / inline_expression) (!! '' -> "Missing expression after the '\:'" !!))
/ 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):
!chunk_delimeter
( (inline_expression (%ws* (inline_expression / word))+)
/ (word (%ws* (inline_expression / word))*))
(%ws* ":" %ws* (inline_block / inline_action / inline_expression
/ (!! '' -> "Missing expression after the ':'" !!)))?
action (Action):
!chunk_delimeter
( (expression ((nl_nodent "..")? %ws* (expression / word))+)
/ (word ((nl_nodent "..")? %ws* (expression / word))*))
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 {:curr_indent: indent :}
(indented_plain_text / text_interpolation / {~ blank_lines (=curr_indent -> "") ~})*
(!! [^%nl]+ -> "Unexpected character while parsing Text" !!)?
indented_plain_text (Text):
{~ (("\\" -> "\") / (("\" blank_lines =curr_indent "..") -> "") / (!text_interpolation "\") / [^%nl\]+)+
(blank_lines (=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't contain operators like apostrophe
-- which is a hack to allow %'s to parse as "%" and "' s" separately
variable (Var): "%" {(%ident_char+ ((!"'" %operator_char+) / %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_block / inline_action / inline_expression)?)?
dict_key:
text_word / inline_expression
|
