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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 $data 0] { |
9c468fcd |
63 | ^true|false|null$ { 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 $data 0] { |
93 | ^true|false|null$ { uplevel 1 return [lindex $data 0] } |
94 | ^num|str|obj|list$ {} |
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 | |
109 | proc eat_comma {} { |
110 | variable json |
111 | set json [string trimleft $json] |
112 | if {[string index $json 0] eq ","} { |
113 | set json [string range $json 1 end] |
114 | } |
115 | } |
116 | |
117 | proc parse_list {} { |
118 | variable json |
119 | set json [ string range $json 1 end ] |
120 | set tcl {list} |
121 | while {"$json" ne ""} { |
122 | if {[string index $json 0] eq "]"} { |
123 | return $tcl |
124 | } |
125 | lappend tcl [ parse ] |
126 | eat_comma |
127 | } |
128 | error "Ran out of JSON. Confused now." |
129 | } |
130 | |
131 | proc parse_str {} { |
132 | variable json |
f5961f8c |
133 | # like Text::Balanced except ugly (borrowed from tcvJSON's code) |
134 | set reStr {(?:(?:\")(?:[^\\\"]*(?:\\.[^\\\"]*)*)(?:\"))} |
135 | if {![regexp $reStr $json string]} { |
136 | error [ concat "Invalid string: " [string range $json 0 32] |
137 | } |
138 | set json [string range $json [string length $string] end] |
139 | # chop off outer ""s and substitute backslashes |
140 | # This does more than the RFC-specified backslash sequences, |
141 | # but it does cover them all |
142 | list str [subst -nocommand -novariable [string range $string 1 end-1]] |
143 | } |
144 | |
145 | proc parse {} { |
146 | variable json |
147 | set json [string trimleft $json] |
148 | if {$json eq ""} { |
149 | return |
150 | } |
151 | switch -regexp [string index $json 0] { |
152 | {\{} { parse_obj } |
153 | {\[} { parse_list } |
154 | {\"} { parse_str } |
155 | |
156 | {[-0-9]} { parse_number } |
157 | |
158 | default { error "argh" } |
159 | } |
160 | } |
161 | } |
162 | |
163 | proc parse_json {json} { |
164 | set parse::json $json |
165 | parse::parse |
166 | } |
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167 | } |
168 | |
a001e5b2 |
169 | set ex_json { list {str foo} {num 0} {obj __remote_object__ {str 512}} {null} } |
170 | |
f5961f8c |
171 | set jtext { |
172 | [ |
173 | "foo", |
174 | 0, |
175 | { |
176 | "__remote_object__": "512", |
177 | }, |
178 | null, |
179 | ] |
180 | } |
181 | |
a001e5b2 |
182 | puts [ ten::json::deparse_json $ex_json 2 ] |
183 | |
184 | dict for {k v} [ ten::json::tclify_json [ |
185 | lindex [ ten::json::tclify_json $ex_json ] 2 |
186 | ] ] { puts "$k: $v" } |
f5961f8c |
187 | |
188 | #puts [ ten::json::parse_json $jtext ] |
189 | |
190 | puts [ ten::json::parse_json {["foo"]} ] |