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Shell: Add support for heredocs to the POSIX parser

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This commit is contained in:
Ali Mohammad Pur 2023-02-16 09:52:13 +03:30 • committed by Ali Mohammad Pur
parent a5e4bc4faf
commit 2881bb4c3a
4 changed files with 333 additions and 20 deletions
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14
Userland/Shell/PosixParser.h
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@ -13,12 +13,12 @@ namespace Shell::Posix {
class Parser {
public:
Parser(StringView input, bool interactive = false)
Parser(StringView input, bool interactive = false, Optional<Reduction> starting_reduction = {})
: m_lexer(input)
, m_in_interactive_mode(interactive)
, m_eof_token(Token::eof())
{
fill_token_buffer();
fill_token_buffer(starting_reduction);
}
RefPtr<AST::Node> parse();
@ -31,20 +31,23 @@ public:
auto& errors() const { return m_errors; }
private:
Optional<Token> next_expanded_token();
Optional<Token> next_expanded_token(Optional<Reduction> starting_reduction = {});
Vector<Token> perform_expansions(Vector<Token> tokens);
void fill_token_buffer();
void fill_token_buffer(Optional<Reduction> starting_reduction = {});
void handle_heredoc_contents();
Token const& peek() const
Token const& peek()
{
if (eof())
return m_eof_token;
handle_heredoc_contents();
return m_token_buffer[m_token_index];
}
Token const& consume()
{
if (eof())
return m_eof_token;
handle_heredoc_contents();
return m_token_buffer[m_token_index++];
}
void skip()
@ -108,6 +111,7 @@ private:
Vector<Token> m_previous_token_buffer;
Vector<Error> m_errors;
HashMap<DeprecatedString, NonnullRefPtr<AST::Heredoc>> m_unprocessed_heredoc_entries;
Token m_eof_token;