mirror of
https://github.com/fish-shell/fish-shell
synced 2024-12-29 06:13:20 +00:00
5f7e03ccf4
These are little helper types that allow us to get rid of lots of '=delete' declarations.
80 lines
2.8 KiB
C++
80 lines
2.8 KiB
C++
// Programmatic representation of fish code.
|
|
#ifndef FISH_PARSE_PRODUCTIONS_H
|
|
#define FISH_PARSE_PRODUCTIONS_H
|
|
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
#include <sys/types.h>
|
|
|
|
#include <deque>
|
|
#include <memory>
|
|
#include <vector>
|
|
|
|
#include "ast.h"
|
|
#include "common.h"
|
|
#include "maybe.h"
|
|
#include "parse_constants.h"
|
|
#include "tokenizer.h"
|
|
|
|
typedef uint32_t source_offset_t;
|
|
|
|
constexpr source_offset_t SOURCE_OFFSET_INVALID = static_cast<source_offset_t>(-1);
|
|
|
|
/// A struct representing the token type that we use internally.
|
|
struct parse_token_t {
|
|
enum parse_token_type_t type; // The type of the token as represented by the parser
|
|
enum parse_keyword_t keyword {
|
|
parse_keyword_t::none
|
|
}; // Any keyword represented by this token
|
|
bool has_dash_prefix{false}; // Hackish: whether the source contains a dash prefix
|
|
bool is_help_argument{false}; // Hackish: whether the source looks like '-h' or '--help'
|
|
bool is_newline{false}; // Hackish: if TOK_END, whether the source is a newline.
|
|
bool may_be_variable_assignment{false}; // Hackish: whether this token is a string like FOO=bar
|
|
tokenizer_error_t tok_error{
|
|
tokenizer_error_t::none}; // If this is a tokenizer error, that error.
|
|
source_offset_t source_start{SOURCE_OFFSET_INVALID};
|
|
source_offset_t source_length{0};
|
|
|
|
/// \return the source range.
|
|
/// Note the start may be invalid.
|
|
source_range_t range() const { return source_range_t{source_start, source_length}; }
|
|
|
|
/// \return whether we are a string with the dash prefix set.
|
|
bool is_dash_prefix_string() const {
|
|
return type == parse_token_type_t::string && has_dash_prefix;
|
|
}
|
|
|
|
wcstring describe() const;
|
|
wcstring user_presentable_description() const;
|
|
|
|
constexpr parse_token_t(parse_token_type_t type) : type(type) {}
|
|
};
|
|
|
|
const wchar_t *token_type_description(parse_token_type_t type);
|
|
const wchar_t *keyword_description(parse_keyword_t type);
|
|
|
|
parse_error_code_t parse_error_from_tokenizer_error(tokenizer_error_t err);
|
|
|
|
namespace ast {
|
|
class ast_t;
|
|
}
|
|
|
|
/// A type wrapping up a parse tree and the original source behind it.
|
|
struct parsed_source_t : noncopyable_t, nonmovable_t {
|
|
wcstring src;
|
|
ast::ast_t ast;
|
|
|
|
parsed_source_t(wcstring &&s, ast::ast_t &&ast);
|
|
~parsed_source_t();
|
|
};
|
|
|
|
/// Return a shared pointer to parsed_source_t, or null on failure.
|
|
/// If parse_flag_continue_after_error is not set, this will return null on any error.
|
|
using parsed_source_ref_t = std::shared_ptr<const parsed_source_t>;
|
|
parsed_source_ref_t parse_source(wcstring &&src, parse_tree_flags_t flags,
|
|
parse_error_list_t *errors);
|
|
|
|
/// Error message for improper use of the exec builtin.
|
|
#define EXEC_ERR_MSG _(L"The '%ls' command can not be used in a pipeline")
|
|
|
|
#endif
|