mago-syntax 1.0.0-alpha.5

A correct, fast, and memory-efficient PHP syntax implementation, including Lexer, Parser, AST, and utilities for Mago.
Documentation 
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use crate::T;
use crate::ast::ast::*;
use crate::ast::sequence::TokenSeparatedSequence;
use crate::error::ParseError;
use crate::parser::internal::expression::parse_expression;
use crate::parser::internal::terminator::parse_terminator;
use crate::parser::internal::token_stream::TokenStream;
use crate::parser::internal::utils;

pub fn parse_echo(stream: &mut TokenStream<'_, '_>) -> Result<Echo, ParseError> {
    Ok(Echo {
        echo: utils::expect_keyword(stream, T!["echo"])?,
        values: {
            let mut values = vec![];
            let mut commas = vec![];

            loop {
                if matches!(utils::peek(stream)?.kind, T!["?>" | ";"]) {
                    break;
                }

                values.push(parse_expression(stream)?);

                match utils::peek(stream)?.kind {
                    T![","] => {
                        commas.push(utils::expect_any(stream)?);
                    }
                    _ => {
                        break;
                    }
                }
            }

            TokenSeparatedSequence::new(values, commas)
        },
        terminator: parse_terminator(stream)?,
    })
}