blob: cab5dfb49bc034fec38c55d77026de88a2a5d23e (
plain)
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
|
file:
(ignored_line %nl)*
(block / action / expression)?
(%nl ignored_line)*
(!. / (({} (.* -> "Parse error") %userdata) => error))
inline_block (Block):
{| inline_statement (%ws* ";" %ws* inline_statement)+ |}
block (Block):
{| statement (nodent (statement / (({} ([^%nl]* -> "Unexpected character while parsing block line") %userdata) => error)))+ |}
statement: (action / expression) (eol / (({} ([^%nl]* -> "Unexpected character while parsing line") %userdata) => error))
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*
(comma %ws* (inline_block / inline_action / inline_expression) %ws*)*
(")"
/ (({} ((!. / &%nl) -> 'Line ended without finding a closing )-parenthesis') %userdata) => error)
/ (({} ([^%nl]* -> 'Unexpected character while parsing subexpression') %userdata) => error)
)
)
inline_expression:
index_chain / noindex_inline_expression
indented_expression:
indented_text / indented_nomsu / indented_list / indented_dict
/ ("(..)"? indent
(block / action / expression)
(dedent / (({} (non_dedent_error -> "Unexpected character while parsing indented expression") %userdata) => error))
)
expression:
inline_expression
/ (":" %ws* ((inline_block / inline_action / inline_expression) eol
/ (({} (eol -> "Missing expression after the ':'") %userdata) => error)))
/ indented_expression
inline_nomsu (EscapedNomsu): "\" {| inline_expression |}
indented_nomsu (EscapedNomsu):
"\" {|
noindex_inline_expression
/ (":" %ws* ((inline_block / inline_action / inline_expression) eol
/ (({} (eol -> "Missing expression after the ':'") %userdata) => error)))
/ indented_expression |}
index_chain (IndexChain):
{| noindex_inline_expression ("." (text_word / noindex_inline_expression))+ |}
-- Actions need at least one word in them
inline_action (Action):
{|
(inline_expression %ws*)* word (%ws* (inline_expression / word))*
(%ws* ":" %ws* (inline_block / inline_action / inline_expression
/ (({} ('' -> "Missing expression after the ':'") %userdata) => error)))?
|}
action (Action):
{| (expression (dotdot? %ws*))* word ((dotdot? %ws*) (expression / word))* |}
word: { %operator_char+ / (!number %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') %userdata) => error)
/(({} ([^%nl]*->'Unexpected character while parsing Text') %userdata) => error)
))
-- Have to use "%indent" instead of "indent" etc. to avoid messing up text lines that start with "#"
indented_text (Text):
'".."' eol %nl {|
{~ (%nl*) (%indent -> "") ~}
({~
(("\\" -> "\") / (("\" nodent "..") -> "")/ (%nl+ {~ %nodent -> "" ~}) / [^%nl\] / (!text_interpolation "\"))+
~} / text_interpolation)*
|} (((!.) %dedent) / (&(%nl %dedent)) / (({} (non_dedent_error -> "Unexpected character while parsing Text") %userdata) => error))
inline_text_interpolation:
"\" (
variable / inline_list / inline_dict / inline_text
/ ("("
%ws* (inline_block / inline_action / inline_expression) %ws*
(comma %ws* (inline_block / inline_action / inline_expression) %ws*)*
(")"
/ (({} (&%nl -> 'Line ended without finding a closing )-parenthesis') %userdata) => error)
/ (({} ([^%nl]* -> 'Unexpected character while parsing Text interpolation') %userdata) => error))
)
)
text_interpolation:
inline_text_interpolation /
("\" indented_expression nodent "..")
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 (comma inline_list_item)* comma?)? |} %ws*
("]" / (","? (
(({} (eol->"Line ended before finding a closing ]-bracket") %userdata) => error)
/(({} ([^%nl]*->"Unexpected character while parsing List") %userdata) => error)
)))
indented_list (List):
"[..]" indent
{| list_line (nodent list_line)* |}
(dedent / ((","? {} (non_dedent_error -> "Unexpected character while parsing List") %userdata) => error))
list_line:
((action / expression) !comma)
/ (inline_list_item (comma list_line?)?)
inline_list_item: inline_block / inline_action / inline_expression
inline_dict (Dict):
!('{..}')
"{" %ws*
{| (inline_dict_entry (comma inline_dict_entry)*)? |} %ws*
("}" / (","? (
(({} (%ws* eol->"Line ended before finding a closing }-brace") %userdata) => error)
/ (({} ([^%nl]*->"Unexpected character while parsing Dictionary") %userdata) => error)
)))
indented_dict (Dict):
"{..}" indent
{| dict_line (nodent dict_line)* |}
(dedent / ((","? {} (non_dedent_error -> "Unexpected character while parsing Dictionary") %userdata) => error))
dict_line:
(dict_entry !comma) / (inline_dict_entry (comma dict_line?)?)
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
comment: "#" [^%nl]* (%nl+ %indent [^%nl]* (%nl+ %nodent [^%nl]*)* %dedent)?
eol_comment: "#" [^%nl]*
eol: %ws* eol_comment? (!. / &%nl)
ignored_line: (%nodent comment) / (%ws* (!. / &%nl))
indent: eol (%nl ignored_line)* %nl %indent (comment (%nl ignored_line)* nodent)?
nodent: eol (%nl ignored_line)* %nl %nodent
dedent: eol (%nl ignored_line)* (((!.) %dedent) / (&(%nl %dedent)))
non_dedent_error: (!dedent .)* eol (%nl ignored_line)* (!. / &%nl)
comma: %ws* "," %ws*
dotdot: nodent ".."
|
