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//! ref: composer/vendor/symfony/console/Formatter/OutputFormatterStyleStack.php
use crate::symfony::console::exception::invalid_argument_exception::InvalidArgumentException;
use crate::symfony::console::formatter::output_formatter_style::OutputFormatterStyle;
use crate::symfony::console::formatter::output_formatter_style_interface::OutputFormatterStyleInterface;
#[derive(Debug)]
pub struct OutputFormatterStyleStack {
styles: Vec<Box<dyn OutputFormatterStyleInterface>>,
empty_style: Box<dyn OutputFormatterStyleInterface>,
}
impl OutputFormatterStyleStack {
pub fn new(empty_style: Option<Box<dyn OutputFormatterStyleInterface>>) -> Self {
let empty_style =
empty_style.unwrap_or_else(|| Box::new(OutputFormatterStyle::new(None, None, vec![])));
let mut this = Self {
styles: vec![],
empty_style,
};
this.reset();
this
}
/// Pushes a style in the stack.
pub fn push(&mut self, style: Box<dyn OutputFormatterStyleInterface>) {
self.styles.push(style);
}
/// Pops a style from the stack.
///
/// Throws InvalidArgumentException when style tags incorrectly nested.
pub fn pop(
&mut self,
mut style: Option<Box<dyn OutputFormatterStyleInterface>>,
) -> anyhow::Result<Result<Box<dyn OutputFormatterStyleInterface>, InvalidArgumentException>>
{
if self.styles.is_empty() {
// Returns the shared empty style; ownership cannot be expressed without Clone on the
// trait object.
// TODO(human-review): empty-style branch needs a Clone/Rc strategy in Phase C.
return Ok(Ok(todo!()));
}
let style = match style.as_mut() {
None => {
return Ok(Ok(shirabe_php_shim::array_pop(&mut self.styles).unwrap()));
}
Some(style) => style,
};
for index in (0..self.styles.len()).rev() {
if style.apply("") == self.styles[index].apply("") {
// PHP: array_slice($this->styles, 0, $index) keeps elements before $index,
// dropping the matched element and everything after it.
let stacked_style = self.styles.remove(index);
self.styles.truncate(index);
return Ok(Ok(stacked_style));
}
}
Ok(Err(InvalidArgumentException(
shirabe_php_shim::InvalidArgumentException {
message: "Incorrectly nested style tag found.".to_string(),
code: 0,
},
)))
}
/// Computes current style with stacks top codes.
pub fn get_current(&self) -> &dyn OutputFormatterStyleInterface {
if self.styles.is_empty() {
return self.empty_style.as_ref();
}
self.styles[self.styles.len() - 1].as_ref()
}
/// Mutable variant of `get_current`, needed because `apply` lazily mutates style state.
pub fn get_current_mut(&mut self) -> &mut dyn OutputFormatterStyleInterface {
if self.styles.is_empty() {
return self.empty_style.as_mut();
}
let last = self.styles.len() - 1;
self.styles[last].as_mut()
}
pub fn set_empty_style(
&mut self,
empty_style: Box<dyn OutputFormatterStyleInterface>,
) -> &mut Self {
self.empty_style = empty_style;
self
}
pub fn get_empty_style(&self) -> &dyn OutputFormatterStyleInterface {
self.empty_style.as_ref()
}
pub fn reset(&mut self) {
self.styles = vec![];
}
}
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