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#pragma once
#include "StarString.hpp"
#include "StarEncode.hpp"
#include "StarBytes.hpp"
#include "StarFormat.hpp"
namespace Star {
// Currently the specification of the "language" is incredibly simple The only
// thing we process are quoted strings and backslashes Backslashes function as
// a useful subset of C++ This means: Newline: \n Tab: \t Backslash: \\ Single
// Quote: \' Double Quote: \" Null: \0 Space: "\ " (without quotes ofc, not
// actually C++) Also \v \b \a \f \r Plus Unicode \uxxxx Not implemented octal
// and hexadecimal, because it's possible to construct invalid unicode code
// points using them
STAR_EXCEPTION(ShellParsingException, StarException);
class ShellParser {
public:
ShellParser();
typedef String::Char Char;
enum class TokenType {
Word,
// TODO: braces, brackets, actual shell stuff
};
struct Token {
TokenType type;
String token;
};
List<Token> tokenize(String const& command);
StringList tokenizeToStringList(String const& command);
private:
void init(String const& command);
String word();
Char parseBackslash();
Char parseUnicodeEscapeSequence(Maybe<Char> previousCodepoint = {});
bool isSpace(Char letter) const;
bool isQuote(Char letter) const;
bool inQuotedString() const;
bool notDone() const;
Maybe<Char> current() const;
Maybe<Char> next();
Maybe<Char> previous();
String::const_iterator m_begin;
String::const_iterator m_current;
String::const_iterator m_end;
Char m_quotedType;
};
}
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