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Various JSON pretty printing tweaks

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This commit is contained in:
Kevin Cantu 2012-08-30 21:03:19 -07:00 committed by Erick Tryzelaar
parent 4fb675be2f
commit cf386188c8
1 changed files with 31 additions and 9 deletions
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40
src/libstd/json.rs
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@ -102,14 +102,20 @@ fn to_writer_pretty(wr: io::Writer, j: Json, indent: uint) {
String(s) => wr.write_str(escape_str(*s)),
Boolean(b) => wr.write_str(if b { ~"true" } else { ~"false" }),
List(vv) => {
if vv.len() == 0u {
wr.write_str(~"[]");
return;
}
let inner_indent = indent + 2;
// [
wr.write_str(spaces(indent));
wr.write_str("[ ");
wr.write_str("[\n");
wr.write_str(spaces(inner_indent));
// [ elem,
// elem,
// elem ]
let inner_indent = indent + 2;
let mut first = true;
for (*vv).each |item| {
if !first {
@ -121,9 +127,18 @@ fn to_writer_pretty(wr: io::Writer, j: Json, indent: uint) {
};
// ]
wr.write_str(~" ]");
wr.write_str("\n");
wr.write_str(spaces(indent));
wr.write_str(~"]");
}
Dict(dd) => {
if dd.size() == 0u {
wr.write_str(~"{}");
return;
}
let inner_indent = indent + 2;
// convert from a dictionary
let mut pairs = ~[];
for dd.each |key, value| {
@ -134,13 +149,12 @@ fn to_writer_pretty(wr: io::Writer, j: Json, indent: uint) {
let sorted_pairs = sort::merge_sort(|a,b| *a <= *b, pairs);
// {
wr.write_str(spaces(indent));
wr.write_str(~"{ ");
wr.write_str(~"{\n");
wr.write_str(spaces(inner_indent));
// { k: v,
// k: v,
// k: v }
let inner_indent = indent + 2;
let mut first = true;
for sorted_pairs.each |kv| {
let (key, value) = kv;
@ -150,13 +164,15 @@ fn to_writer_pretty(wr: io::Writer, j: Json, indent: uint) {
}
first = false;
let key = str::append(escape_str(key), ~": ");
let key_indent = str::len(key);
let key_indent = inner_indent + str::len(key);
wr.write_str(key);
to_writer_pretty(wr, value, key_indent);
};
// }
wr.write_str(~" }");
wr.write_str(~"\n");
wr.write_str(spaces(indent));
wr.write_str(~"}");
}
Null => wr.write_str(~"null")
}
@ -892,6 +908,12 @@ mod tests {
assert from_str(~" \"foo\" ") == Ok(String(@~"foo"));
}
#[test]
fn test_unicode_hex_escapes_in_str() {
assert from_str(~"\"\\u12ab\"") == Ok(String(@~"\u12ab"));
assert from_str(~"\"\\uAB12\"") == Ok(String(@~"\uAB12"));
}
#[test]
fn test_read_list() {
assert from_str(~"[") ==