ktav 0.1.5

Ktav — a plain configuration format. Three rules, zero indentation, zero quoting. Serde-native.
Documentation 
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//! Render one line of an array (item can be scalar, object, or nested array).

use crate::error::Result;
use crate::value::Value;

use super::helpers::{needs_raw_marker, push_indent};
use super::object::render_object_body;

pub(super) fn render_array_item(value: &Value, indent: usize, out: &mut String) -> Result<()> {
    push_indent(out, indent);
    match value {
        Value::Null => {
            out.push_str("null\n");
        }
        Value::Bool(b) => {
            out.push_str(if *b { "true" } else { "false" });
            out.push('\n');
        }
        Value::Integer(s) => {
            out.push_str(":i ");
            out.push_str(s);
            out.push('\n');
        }
        Value::Float(s) => {
            out.push_str(":f ");
            out.push_str(s);
            out.push('\n');
        }
        Value::String(s) => {
            if s.contains('\n') {
                out.push_str("((\n");
                out.push_str(s);
                out.push('\n');
                push_indent(out, indent);
                out.push_str("))\n");
            } else if s.is_empty() {
                // An empty-string item would otherwise render as a bare
                // indented blank line, which the parser treats as
                // decorative and drops. Force `::` so it stays a
                // recognisable literal-string entry.
                out.push_str("::\n");
            } else {
                if needs_raw_marker(s) {
                    out.push_str(":: ");
                }
                out.push_str(s);
                out.push('\n');
            }
        }
        Value::Array(items) => {
            if items.is_empty() {
                out.push_str("[]\n");
            } else {
                out.push_str("[\n");
                for item in items {
                    render_array_item(item, indent + 1, out)?;
                }
                push_indent(out, indent);
                out.push_str("]\n");
            }
        }
        Value::Object(obj) => {
            if obj.is_empty() {
                out.push_str("{}\n");
            } else {
                out.push_str("{\n");
                render_object_body(obj, indent + 1, out)?;
                push_indent(out, indent);
                out.push_str("}\n");
            }
        }
    }
    Ok(())
}