Struct tvix_eval::builtins::to_xml::XmlEmitter

struct XmlEmitter<W> {
    cur_indent: usize,
    writer: W,
    context: NixContext,
}

A simple-stupid XML emitter, which implements only the subset needed for byte-by-byte compat with C++ nix’ builtins.toXML.

Fields

cur_indent: usize

The current indentation

writer: W

context: NixContext

Implementations

impl<W: Write> XmlEmitter<W>

pub fn new(writer: W) -> Self

pub fn write_open_tag( &mut self, name_unescaped: &str, attrs: &[(&str, &str)], ) -> Result<()>

Write an open tag with the given name (which is not escaped!) and attributes (Keys are not escaped! Only attribute values are.)

pub fn write_self_closing_tag( &mut self, name_unescaped: &str, attrs: &[(&str, &str)], ) -> Result<()>

Write a self-closing open tag with the given name (which is not escaped!) and attributes (Keys are not escaped! Only attribute values are.)

pub fn write_closing_tag(&mut self, name_unescaped: &str) -> Result<()>

Write a closing tag with the given name (which is not escaped!)

fn add_indent(&mut self) -> Result<()>

fn write_attrs_escape_vals(&mut self, attrs: &[(&str, &str)]) -> Result<()>

Write an attribute list

fn escape_attr_value(s: &str) -> Cow<'_, str>

Escape the given attribute value, making sure we only actually clone the string if we needed to replace something.

fn should_escape_char(c: char) -> Option<&'static str>

fn extend_context<T>(&mut self, iter: T)

where T: IntoIterator<Item = NixContextElement>,

Extends the existing context with more context elements.

fn into_context(self) -> NixContext

Consumes Self and returns the NixContext collected.