Commit | Line | Data |
7b31d3c3 |
1 | namespace eval ten::json { |
2 | |
3 | namespace eval deparse { |
4 | |
5 | variable quotes [ |
6 | list "\"" "\\\"" / \\/ \\ \\\\ \b \\b \f \\f \n \\n \r \\r \t \\t |
7 | ] |
8 | |
9 | variable indent |
10 | variable indentBy 0 |
11 | variable indentIncr |
12 | variable nl |
13 | |
14 | proc indent_one {} { |
15 | variable indentIncr |
16 | variable indentBy [ expr $indentBy + $indentIncr ] |
17 | variable indent [ string repeat " " $indentBy ] |
18 | } |
19 | |
20 | proc outdent_one {} { |
21 | variable indentIncr |
22 | variable indentBy [ expr $indentBy - $indentIncr ] |
23 | variable indent [ string repeat " " $indentBy ] |
24 | } |
25 | |
26 | proc str {str} { |
27 | variable quotes |
28 | return \"[ string map $quotes $str ]\" |
29 | } |
30 | |
31 | proc num {num} { |
32 | return $num |
33 | } |
34 | |
35 | proc list {args} { |
36 | variable indent |
37 | variable nl |
38 | set out \[ |
39 | indent_one |
40 | foreach el [lrange $args 0 end] { |
41 | append out $nl$indent |
ced6e98e |
42 | append out [ deparse $el ], |
7b31d3c3 |
43 | } |
44 | outdent_one |
45 | append out $nl$indent\] |
46 | return $out |
47 | } |
48 | |
49 | proc obj {args} { |
50 | variable indent |
51 | variable nl |
52 | set out \{ |
53 | indent_one |
54 | dict for {k v} $args { |
ced6e98e |
55 | append out $nl$indent[ str $k ]:\ [ deparse $v ], |
7b31d3c3 |
56 | } |
57 | outdent_one |
58 | append out $nl$indent\} |
59 | } |
60 | |
ced6e98e |
61 | proc deparse {data} { |
62 | switch -regexp [lindex $data 0] { |
015669f7 |
63 | ^(true|false|null)$ { lindex $data 0 } |
64 | ^(num|str|obj|list)$ { eval $data } |
ced6e98e |
65 | default { error [ concat "Invalid JSON type " [lindex $data 0 0] ] } |
7b31d3c3 |
66 | } |
7b31d3c3 |
67 | } |
68 | } |
69 | |
70 | proc deparse_json {data {indentIncr 2}} { |
71 | set deparse::indentBy 0 |
72 | set deparse::indentIncr $indentIncr |
73 | if [expr $indentIncr == 0] { |
74 | set deparse::nl "" |
75 | } else { |
76 | set deparse::nl "\n" |
77 | } |
a001e5b2 |
78 | deparse::deparse $data |
79 | } |
80 | |
81 | namespace eval tclify { |
82 | |
83 | proc str {str} { return $str } |
84 | |
85 | proc num {num} { return $num } |
86 | |
87 | proc obj {args} { |
88 | return $args |
89 | } |
90 | |
91 | proc tclify {data} { |
92 | switch -regexp [lindex $data 0] { |
015669f7 |
93 | ^(true|false|null)$ { uplevel 1 return [lindex $data 0] } |
94 | ^(num|str|obj|list)$ {} |
a001e5b2 |
95 | default { error [ concat "Invalid JSON type " [lindex $data 0 0] ] } |
96 | } |
f5961f8c |
97 | eval $data |
a001e5b2 |
98 | } |
99 | } |
100 | |
101 | proc tclify_json {data} { |
102 | tclify::tclify $data |
7b31d3c3 |
103 | } |
f5961f8c |
104 | |
105 | namespace eval parse { |
106 | |
107 | variable json |
108 | |
fd341d42 |
109 | proc eat_spaces {} { |
f5961f8c |
110 | variable json |
111 | set json [string trimleft $json] |
fd341d42 |
112 | } |
113 | |
114 | proc eat_char {char} { |
115 | variable json |
116 | eat_spaces |
117 | if {[string index $json 0] eq "$char"} { |
118 | eat_any |
f5961f8c |
119 | } |
120 | } |
121 | |
fd341d42 |
122 | proc eat_any {} { |
f5961f8c |
123 | variable json |
124 | set json [ string range $json 1 end ] |
5d26694f |
125 | } |
126 | |
127 | proc parse_list {} { |
128 | variable json |
fd341d42 |
129 | eat_any |
f5961f8c |
130 | set tcl {list} |
131 | while {"$json" ne ""} { |
015669f7 |
132 | eat_spaces |
f5961f8c |
133 | if {[string index $json 0] eq "]"} { |
fd341d42 |
134 | eat_any |
135 | return $tcl |
136 | } |
137 | lappend tcl [ parse ] |
138 | eat_char , |
139 | } |
140 | error "Ran out of JSON. Confused now." |
141 | } |
142 | |
143 | proc parse_obj {} { |
144 | variable json |
015669f7 |
145 | eat_any |
fd341d42 |
146 | set tcl {obj} |
147 | while {"$json" ne ""} { |
015669f7 |
148 | eat_spaces |
149 | if {[string index $json 0] eq "\}"} { |
150 | eat_any |
f5961f8c |
151 | return $tcl |
152 | } |
015669f7 |
153 | eat_spaces |
154 | lappend tcl [ parse_str ] |
155 | eat_spaces |
156 | eat_char : |
157 | eat_spaces |
f5961f8c |
158 | lappend tcl [ parse ] |
fd341d42 |
159 | eat_char , |
f5961f8c |
160 | } |
161 | error "Ran out of JSON. Confused now." |
162 | } |
163 | |
164 | proc parse_str {} { |
165 | variable json |
f5961f8c |
166 | # like Text::Balanced except ugly (borrowed from tcvJSON's code) |
167 | set reStr {(?:(?:\")(?:[^\\\"]*(?:\\.[^\\\"]*)*)(?:\"))} |
168 | if {![regexp $reStr $json string]} { |
015669f7 |
169 | error "Invalid string: $json" |
f5961f8c |
170 | } |
171 | set json [string range $json [string length $string] end] |
172 | # chop off outer ""s and substitute backslashes |
173 | # This does more than the RFC-specified backslash sequences, |
174 | # but it does cover them all |
175 | list str [subst -nocommand -novariable [string range $string 1 end-1]] |
176 | } |
177 | |
5d26694f |
178 | proc parse_num {} { |
179 | variable json |
180 | string is double -failindex last $json |
181 | if {$last == 0} { |
182 | error "Saw number but wasn't - $json" |
183 | } |
184 | set num [string range $json 0 [expr {$last - 1}]] |
185 | set json [string range $json $last end] |
186 | list num $num |
187 | } |
188 | |
015669f7 |
189 | proc parse_bare {} { |
190 | variable json |
191 | if [regexp {^(true|false|null)} $json matched] { |
192 | set json [ string range $json [ string length $matched ] end ] |
193 | return $matched |
194 | } else { |
195 | error "Out of ideas parsing: $json" |
196 | } |
197 | } |
198 | |
f5961f8c |
199 | proc parse {} { |
200 | variable json |
fd341d42 |
201 | eat_spaces |
f5961f8c |
202 | if {$json eq ""} { |
203 | return |
204 | } |
205 | switch -regexp [string index $json 0] { |
206 | {\{} { parse_obj } |
207 | {\[} { parse_list } |
208 | {\"} { parse_str } |
209 | |
5d26694f |
210 | {[-0-9]} { parse_num } |
f5961f8c |
211 | |
015669f7 |
212 | default { parse_bare } |
f5961f8c |
213 | } |
214 | } |
215 | } |
216 | |
217 | proc parse_json {json} { |
5d26694f |
218 | set parse::json [ string trim $json ] |
219 | set result [ parse::parse ] |
fd341d42 |
220 | parse::eat_spaces |
221 | if {$parse::json ne ""} { |
5d26694f |
222 | error "Had JSON left over: $parse::json" |
223 | } |
224 | return $result |
f5961f8c |
225 | } |
0fcbbbfb |
226 | |
227 | namespace export parse_json deparse_json tclify_json |
7b31d3c3 |
228 | } |
229 | |
a001e5b2 |
230 | set ex_json { list {str foo} {num 0} {obj __remote_object__ {str 512}} {null} } |
231 | |
f5961f8c |
232 | set jtext { |
233 | [ |
234 | "foo", |
235 | 0, |
236 | { |
237 | "__remote_object__": "512", |
238 | }, |
239 | null, |
240 | ] |
241 | } |
242 | |
0fcbbbfb |
243 | namespace import ten::json::* |
244 | |
245 | puts [ deparse_json $ex_json 2 ] |
a001e5b2 |
246 | |
0fcbbbfb |
247 | dict for {k v} [ tclify_json [ |
248 | lindex [ tclify_json $ex_json ] 2 |
a001e5b2 |
249 | ] ] { puts "$k: $v" } |
f5961f8c |
250 | |
0fcbbbfb |
251 | puts [ parse_json $jtext ] |
f5961f8c |
252 | |
0fcbbbfb |
253 | puts [ parse_json {["foo",2345,["bar"]]} ] |