mirror of
https://github.com/fish-shell/fish-shell
synced 2024-12-27 21:33:09 +00:00
82f5fb507d
In addition to fixing `echo -h` this includes some debugging related cleanups I made while investigating the issue. Fixes #4120
147 lines
7.7 KiB
C++
147 lines
7.7 KiB
C++
// Various mostly unrelated utility functions related to parsing, loading and evaluating fish code.
|
|
#ifndef FISH_PARSE_UTIL_H
|
|
#define FISH_PARSE_UTIL_H
|
|
|
|
#include <stddef.h>
|
|
|
|
#include <vector>
|
|
|
|
#include "common.h"
|
|
#include "parse_constants.h"
|
|
#include "tokenizer.h"
|
|
|
|
/// Find the beginning and end of the first subshell in the specified string.
|
|
///
|
|
/// \param in the string to search for subshells
|
|
/// \param begin the starting paranthesis of the subshell
|
|
/// \param end the ending paranthesis of the subshell
|
|
/// \param accept_incomplete whether to permit missing closing parenthesis
|
|
/// \return -1 on syntax error, 0 if no subshells exist and 1 on success
|
|
int parse_util_locate_cmdsubst(const wchar_t *in, wchar_t **begin, wchar_t **end,
|
|
bool accept_incomplete);
|
|
|
|
/// Same as parse_util_locate_cmdsubst, but handles square brackets [ ].
|
|
int parse_util_locate_slice(const wchar_t *in, wchar_t **begin, wchar_t **end,
|
|
bool accept_incomplete);
|
|
|
|
/// Alternative API. Iterate over command substitutions.
|
|
///
|
|
/// \param str the string to search for subshells
|
|
/// \param inout_cursor_offset On input, the location to begin the search. On output, either the end
|
|
/// of the string, or just after the closed-paren.
|
|
/// \param out_contents On output, the contents of the command substitution
|
|
/// \param out_start On output, the offset of the start of the command substitution (open paren)
|
|
/// \param out_end On output, the offset of the end of the command substitution (close paren), or
|
|
/// the end of the string if it was incomplete
|
|
/// \param accept_incomplete whether to permit missing closing parenthesis
|
|
/// \return -1 on syntax error, 0 if no subshells exist and 1 on success
|
|
int parse_util_locate_cmdsubst_range(const wcstring &str, size_t *inout_cursor_offset,
|
|
wcstring *out_contents, size_t *out_start, size_t *out_end,
|
|
bool accept_incomplete);
|
|
|
|
/// Find the beginning and end of the command substitution under the cursor. If no subshell is
|
|
/// found, the entire string is returned. If the current command substitution is not ended, i.e. the
|
|
/// closing parenthesis is missing, then the string from the beginning of the substitution to the
|
|
/// end of the string is returned.
|
|
///
|
|
/// \param buff the string to search for subshells
|
|
/// \param cursor_pos the position of the cursor
|
|
/// \param a the start of the searched string
|
|
/// \param b the end of the searched string
|
|
void parse_util_cmdsubst_extent(const wchar_t *buff, size_t cursor_pos, const wchar_t **a,
|
|
const wchar_t **b);
|
|
|
|
/// Find the beginning and end of the process definition under the cursor
|
|
///
|
|
/// \param buff the string to search for subshells
|
|
/// \param cursor_pos the position of the cursor
|
|
/// \param a the start of the searched string
|
|
/// \param b the end of the searched string
|
|
void parse_util_process_extent(const wchar_t *buff, size_t cursor_pos, const wchar_t **a,
|
|
const wchar_t **b);
|
|
|
|
/// Find the beginning and end of the job definition under the cursor
|
|
///
|
|
/// \param buff the string to search for subshells
|
|
/// \param cursor_pos the position of the cursor
|
|
/// \param a the start of the searched string
|
|
/// \param b the end of the searched string
|
|
void parse_util_job_extent(const wchar_t *buff, size_t cursor_pos, const wchar_t **a,
|
|
const wchar_t **b);
|
|
|
|
/// Find the beginning and end of the token under the cursor and the token before the current token.
|
|
/// Any combination of tok_begin, tok_end, prev_begin and prev_end may be null.
|
|
///
|
|
/// \param buff the string to search for subshells
|
|
/// \param cursor_pos the position of the cursor
|
|
/// \param tok_begin the start of the current token
|
|
/// \param tok_end the end of the current token
|
|
/// \param prev_begin the start o the token before the current token
|
|
/// \param prev_end the end of the token before the current token
|
|
void parse_util_token_extent(const wchar_t *buff, size_t cursor_pos, const wchar_t **tok_begin,
|
|
const wchar_t **tok_end, const wchar_t **prev_begin,
|
|
const wchar_t **prev_end);
|
|
|
|
/// Get the linenumber at the specified character offset.
|
|
int parse_util_lineno(const wchar_t *str, size_t len);
|
|
|
|
/// Calculate the line number of the specified cursor position.
|
|
int parse_util_get_line_from_offset(const wcstring &str, size_t pos);
|
|
|
|
/// Get the offset of the first character on the specified line.
|
|
size_t parse_util_get_offset_from_line(const wcstring &str, int line);
|
|
|
|
/// Return the total offset of the buffer for the cursor position nearest to the specified poition.
|
|
size_t parse_util_get_offset(const wcstring &str, int line, long line_offset);
|
|
|
|
/// Return the given string, unescaping wildcard characters but not performing any other character
|
|
/// transformation.
|
|
wcstring parse_util_unescape_wildcards(const wcstring &in);
|
|
|
|
/// Checks if the specified string is a help option.
|
|
bool parse_util_argument_is_help(const wchar_t *s);
|
|
|
|
/// Calculates information on the parameter at the specified index.
|
|
///
|
|
/// \param cmd The command to be analyzed
|
|
/// \param pos An index in the string which is inside the parameter
|
|
/// \param quote If not NULL, store the type of quote this parameter has, can be either ', " or \\0,
|
|
/// meaning the string is not quoted.
|
|
/// \param offset If not NULL, get_param will store the offset to the beginning of the parameter.
|
|
/// \param out_type If not NULL, get_param will store the token type.
|
|
void parse_util_get_parameter_info(const wcstring &cmd, const size_t pos, wchar_t *quote,
|
|
size_t *offset, enum token_type *out_type);
|
|
|
|
/// Attempts to escape the string 'cmd' using the given quote type, as determined by the quote
|
|
/// character. The quote can be a single quote or double quote, or L'\0' to indicate no quoting (and
|
|
/// thus escaping should be with backslashes).
|
|
wcstring parse_util_escape_string_with_quote(const wcstring &cmd, wchar_t quote);
|
|
|
|
/// Given a string, parse it as fish code and then return the indents. The return value has the same
|
|
/// size as the string.
|
|
std::vector<int> parse_util_compute_indents(const wcstring &src);
|
|
|
|
/// Given a string, detect parse errors in it. If allow_incomplete is set, then if the string is
|
|
/// incomplete (e.g. an unclosed quote), an error is not returned and the PARSER_TEST_INCOMPLETE bit
|
|
/// is set in the return value. If allow_incomplete is not set, then incomplete strings result in an
|
|
/// error. If out_tree is not NULL, the resulting tree is returned by reference.
|
|
class parse_node_tree_t;
|
|
parser_test_error_bits_t parse_util_detect_errors(const wcstring &buff_src,
|
|
parse_error_list_t *out_errors = NULL,
|
|
bool allow_incomplete = true,
|
|
parse_node_tree_t *out_tree = NULL);
|
|
|
|
/// Test if this argument contains any errors. Detected errors include syntax errors in command
|
|
/// substitutions, improperly escaped characters and improper use of the variable expansion
|
|
/// operator. This does NOT currently detect unterminated quotes.
|
|
class parse_node_t;
|
|
parser_test_error_bits_t parse_util_detect_errors_in_argument(
|
|
const parse_node_t &node, const wcstring &arg_src, parse_error_list_t *out_errors = NULL);
|
|
|
|
/// Given a string containing a variable expansion error, append an appropriate error to the errors
|
|
/// list. The global_token_pos is the offset of the token in the larger source, and the dollar_pos
|
|
/// is the offset of the offending dollar sign within the token.
|
|
void parse_util_expand_variable_error(const wcstring &token, size_t global_token_pos,
|
|
size_t dollar_pos, parse_error_list_t *out_errors);
|
|
|
|
#endif
|