Trait serde_json::ser::Formatter [−][src]
This trait abstracts away serializing the JSON control characters, which allows the user to optionally pretty print the JSON output.
Provided methods
fn write_null<W: ?Sized>(&mut self, writer: &mut W) -> Result<()> where
W: Write,
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W: Write,
Writes a null
value to the specified writer.
fn write_bool<W: ?Sized>(&mut self, writer: &mut W, value: bool) -> Result<()> where
W: Write,
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W: Write,
Writes a true
or false
value to the specified writer.
fn write_i8<W: ?Sized>(&mut self, writer: &mut W, value: i8) -> Result<()> where
W: Write,
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W: Write,
Writes an integer value like -123
to the specified writer.
fn write_i16<W: ?Sized>(&mut self, writer: &mut W, value: i16) -> Result<()> where
W: Write,
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W: Write,
Writes an integer value like -123
to the specified writer.
fn write_i32<W: ?Sized>(&mut self, writer: &mut W, value: i32) -> Result<()> where
W: Write,
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W: Write,
Writes an integer value like -123
to the specified writer.
fn write_i64<W: ?Sized>(&mut self, writer: &mut W, value: i64) -> Result<()> where
W: Write,
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W: Write,
Writes an integer value like -123
to the specified writer.
fn write_u8<W: ?Sized>(&mut self, writer: &mut W, value: u8) -> Result<()> where
W: Write,
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W: Write,
Writes an integer value like 123
to the specified writer.
fn write_u16<W: ?Sized>(&mut self, writer: &mut W, value: u16) -> Result<()> where
W: Write,
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W: Write,
Writes an integer value like 123
to the specified writer.
fn write_u32<W: ?Sized>(&mut self, writer: &mut W, value: u32) -> Result<()> where
W: Write,
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W: Write,
Writes an integer value like 123
to the specified writer.
fn write_u64<W: ?Sized>(&mut self, writer: &mut W, value: u64) -> Result<()> where
W: Write,
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W: Write,
Writes an integer value like 123
to the specified writer.
fn write_f32<W: ?Sized>(&mut self, writer: &mut W, value: f32) -> Result<()> where
W: Write,
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W: Write,
Writes a floating point value like -31.26e+12
to the specified writer.
fn write_f64<W: ?Sized>(&mut self, writer: &mut W, value: f64) -> Result<()> where
W: Write,
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W: Write,
Writes a floating point value like -31.26e+12
to the specified writer.
fn write_number_str<W: ?Sized>(
&mut self,
writer: &mut W,
value: &str
) -> Result<()> where
W: Write,
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&mut self,
writer: &mut W,
value: &str
) -> Result<()> where
W: Write,
Writes a number that has already been rendered to a string.
fn begin_string<W: ?Sized>(&mut self, writer: &mut W) -> Result<()> where
W: Write,
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W: Write,
Called before each series of write_string_fragment
and
write_char_escape
. Writes a "
to the specified writer.
fn end_string<W: ?Sized>(&mut self, writer: &mut W) -> Result<()> where
W: Write,
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W: Write,
Called after each series of write_string_fragment
and
write_char_escape
. Writes a "
to the specified writer.
fn write_string_fragment<W: ?Sized>(
&mut self,
writer: &mut W,
fragment: &str
) -> Result<()> where
W: Write,
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&mut self,
writer: &mut W,
fragment: &str
) -> Result<()> where
W: Write,
Writes a string fragment that doesn’t need any escaping to the specified writer.
fn write_char_escape<W: ?Sized>(
&mut self,
writer: &mut W,
char_escape: CharEscape
) -> Result<()> where
W: Write,
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&mut self,
writer: &mut W,
char_escape: CharEscape
) -> Result<()> where
W: Write,
Writes a character escape code to the specified writer.
fn begin_array<W: ?Sized>(&mut self, writer: &mut W) -> Result<()> where
W: Write,
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W: Write,
Called before every array. Writes a [
to the specified
writer.
fn end_array<W: ?Sized>(&mut self, writer: &mut W) -> Result<()> where
W: Write,
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W: Write,
Called after every array. Writes a ]
to the specified
writer.
fn begin_array_value<W: ?Sized>(
&mut self,
writer: &mut W,
first: bool
) -> Result<()> where
W: Write,
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&mut self,
writer: &mut W,
first: bool
) -> Result<()> where
W: Write,
Called before every array value. Writes a ,
if needed to
the specified writer.
fn end_array_value<W: ?Sized>(&mut self, _writer: &mut W) -> Result<()> where
W: Write,
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W: Write,
Called after every array value.
fn begin_object<W: ?Sized>(&mut self, writer: &mut W) -> Result<()> where
W: Write,
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W: Write,
Called before every object. Writes a {
to the specified
writer.
fn end_object<W: ?Sized>(&mut self, writer: &mut W) -> Result<()> where
W: Write,
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W: Write,
Called after every object. Writes a }
to the specified
writer.
fn begin_object_key<W: ?Sized>(
&mut self,
writer: &mut W,
first: bool
) -> Result<()> where
W: Write,
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&mut self,
writer: &mut W,
first: bool
) -> Result<()> where
W: Write,
Called before every object key.
fn end_object_key<W: ?Sized>(&mut self, _writer: &mut W) -> Result<()> where
W: Write,
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W: Write,
Called after every object key. A :
should be written to the
specified writer by either this method or
begin_object_value
.
fn begin_object_value<W: ?Sized>(&mut self, writer: &mut W) -> Result<()> where
W: Write,
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W: Write,
Called before every object value. A :
should be written to
the specified writer by either this method or
end_object_key
.
fn end_object_value<W: ?Sized>(&mut self, _writer: &mut W) -> Result<()> where
W: Write,
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W: Write,
Called after every object value.
fn write_raw_fragment<W: ?Sized>(
&mut self,
writer: &mut W,
fragment: &str
) -> Result<()> where
W: Write,
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&mut self,
writer: &mut W,
fragment: &str
) -> Result<()> where
W: Write,
Writes a raw JSON fragment that doesn’t need any escaping to the specified writer.
Implementors
impl Formatter for CompactFormatter
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impl<'a> Formatter for PrettyFormatter<'a>
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fn begin_array<W: ?Sized>(&mut self, writer: &mut W) -> Result<()> where
W: Write,
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W: Write,
fn end_array<W: ?Sized>(&mut self, writer: &mut W) -> Result<()> where
W: Write,
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W: Write,
fn begin_array_value<W: ?Sized>(
&mut self,
writer: &mut W,
first: bool
) -> Result<()> where
W: Write,
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&mut self,
writer: &mut W,
first: bool
) -> Result<()> where
W: Write,
fn end_array_value<W: ?Sized>(&mut self, _writer: &mut W) -> Result<()> where
W: Write,
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W: Write,
fn begin_object<W: ?Sized>(&mut self, writer: &mut W) -> Result<()> where
W: Write,
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W: Write,
fn end_object<W: ?Sized>(&mut self, writer: &mut W) -> Result<()> where
W: Write,
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W: Write,
fn begin_object_key<W: ?Sized>(
&mut self,
writer: &mut W,
first: bool
) -> Result<()> where
W: Write,
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&mut self,
writer: &mut W,
first: bool
) -> Result<()> where
W: Write,
fn begin_object_value<W: ?Sized>(&mut self, writer: &mut W) -> Result<()> where
W: Write,
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W: Write,
fn end_object_value<W: ?Sized>(&mut self, _writer: &mut W) -> Result<()> where
W: Write,
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W: Write,