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use std::borrow::Cow;
use source_map::Span;
use visitable_derive::Visitable;
use crate::{block::BlockOrSingleStatement, ASTNode, Block, Expression, TSXKeyword, TSXToken};
#[derive(Debug, PartialEq, Eq, Clone, Visitable)]
#[cfg_attr(feature = "self-rust-tokenize", derive(self_rust_tokenize::SelfRustTokenize))]
pub struct WhileStatement {
pub condition: Expression,
pub inner: BlockOrSingleStatement,
pub position: Span,
}
impl ASTNode for WhileStatement {
fn get_position(&self) -> Cow<Span> {
Cow::Borrowed(&self.position)
}
fn from_reader(
reader: &mut impl tokenizer_lib::TokenReader<TSXToken, Span>,
state: &mut crate::ParsingState,
settings: &crate::ParseSettings,
) -> Result<Self, crate::ParseError> {
let start_span = reader.expect_next(TSXToken::Keyword(TSXKeyword::While))?;
reader.expect_next(TSXToken::OpenParentheses)?;
let condition = Expression::from_reader(reader, state, settings)?;
reader.expect_next(TSXToken::CloseParentheses)?;
let inner = BlockOrSingleStatement::from_reader(reader, state, settings)?;
Ok(Self { position: start_span.union(&inner.get_position()), condition, inner })
}
fn to_string_from_buffer<T: source_map::ToString>(
&self,
buf: &mut T,
settings: &crate::ToStringSettingsAndData,
depth: u8,
) {
buf.push_str("while");
settings.0.add_gap(buf);
buf.push('(');
self.condition.to_string_from_buffer(buf, settings, depth);
buf.push(')');
settings.0.add_gap(buf);
self.inner.to_string_from_buffer(buf, settings, depth + 1);
}
}
#[derive(Debug, PartialEq, Eq, Clone, Visitable)]
#[cfg_attr(feature = "self-rust-tokenize", derive(self_rust_tokenize::SelfRustTokenize))]
pub struct DoWhileStatement {
pub condition: Expression,
pub statements: Block,
pub position: Span,
}
impl ASTNode for DoWhileStatement {
fn get_position(&self) -> Cow<Span> {
Cow::Borrowed(&self.position)
}
fn from_reader(
reader: &mut impl tokenizer_lib::TokenReader<crate::TSXToken, Span>,
state: &mut crate::ParsingState,
settings: &crate::ParseSettings,
) -> Result<Self, crate::ParseError> {
let start_span = reader.expect_next(TSXToken::Keyword(TSXKeyword::Do))?;
let statements = Block::from_reader(reader, state, settings)?;
reader.expect_next(TSXToken::Keyword(TSXKeyword::While))?;
reader.expect_next(TSXToken::OpenParentheses)?;
let condition = Expression::from_reader(reader, state, settings)?;
reader.expect_next(TSXToken::CloseParentheses)?;
Ok(Self { position: start_span.union(&statements.get_position()), condition, statements })
}
fn to_string_from_buffer<T: source_map::ToString>(
&self,
buf: &mut T,
settings: &crate::ToStringSettingsAndData,
depth: u8,
) {
buf.push_str("do");
settings.0.add_gap(buf);
self.statements.to_string_from_buffer(buf, settings, depth + 1);
buf.push_str("while");
settings.0.add_gap(buf);
buf.push('(');
self.condition.to_string_from_buffer(buf, settings, depth);
buf.push(')');
}
}