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/* See LICENSE file for copyright and license details. */
#include <libsimple.h>
#include <libsimple-arg.h>
#include "config.h"
enum argument_type {
/* .text and .length */
QUOTED, /* \ or '…' or $'…' */
UNQUOTED, /* normal */
/* .child */
QUOTE_EXPRESSION, /* "…" */
BACKQUOTE_EXPRESSION, /* `…` */
ARITHMETIC_EXPRESSION, /* $((…)) */
VARIABLE_SUBSTITUTION, /* ${…} */
SUBSHELL_SUBSTITUTION, /* $(…) */
PROCESS_SUBSTITUTION_INPUT, /* >(…) */
PROCESS_SUBSTITUTION_OUTPUT, /* <(…) */
PROCESS_SUBSTITUTION_INPUT_OUTPUT, /* <>(…) */
SUBSHELL, /* (…) ## if non-first argument: format shell code into a string (can be used for a clean subshell) */
ARITHMETIC_SUBSHELL, /* ((…)) ## if non-first argument: format shell code into a string */
/* (none) */
REDIRECTION, /* at beginning of argument, use next redirection and use reminder of argument as right-hand side */
FUNCTION_MARK /* () */
};
enum redirection_type {
REDIRECT_INPUT,
REDIRECT_INPUT_TO_FD,
REDIRECT_OUTPUT,
REDIRECT_OUTPUT_APPEND,
REDIRECT_OUTPUT_CLOBBER,
REDIRECT_OUTPUT_TO_FD,
REDIRECT_OUTPUT_AND_STDERR,
REDIRECT_OUTPUT_AND_STDERR_APPEND,
REDIRECT_OUTPUT_AND_STDERR_CLOBBER,
REDIRECT_OUTPUT_AND_STDERR_TO_FD,
REDIRECT_INPUT_OUTPUT,
REDIRECT_INPUT_OUTPUT_TO_FD,
HERE_STRING,
HERE_DOCUMENT,
HERE_DOCUMENT_INDENTED
};
enum tokeniser_mode {
NORMAL_MODE,
COMMENT_MODE,
BQ_QUOTE_MODE,
DQ_QUOTE_MODE,
RRB_QUOTE_MODE,
RB_QUOTE_MODE,
SB_QUOTE_MODE,
CB_QUOTE_MODE,
HERE_DOCUMENT_MODE
};
enum command_terminal {
DOUBLE_SEMICOLON,
SEMICOLON,
AMPERSAND,
SOCKET_PIPE,
PIPE,
PIPE_AMPERSAND,
AND,
OR
};
struct parser_state;
struct argument {
enum argument_type type;
union {
struct {
char *text;
size_t length;
};
struct parser_state *child;
};
size_t line_number;
struct argument *next_part;
};
struct redirection {
enum redirection_type type;
struct argument *left_hand_side;
};
struct command {
enum command_terminal terminal;
struct argument **arguments;
size_t narguments;
struct redirection **redirections;
size_t nredirections;
};
struct parser_state {
struct parser_state *parent;
struct command **commands;
size_t ncommands;
struct argument **arguments;
size_t narguments;
struct redirection **redirections;
size_t nredirections;
struct argument *current_argument;
struct argument *current_argument_end;
char need_right_hand_side;
};
struct here_document {
struct redirection *redirection;
struct argument *argument;
struct here_document *next;
};
struct mode_stack {
enum tokeniser_mode mode;
int she_is_comment;
struct mode_stack *previous;
};
struct parser_context {
int tty_input;
int end_of_file_reached;
int premature_end_of_file;
size_t preparser_offset;
size_t preparser_line_number;
size_t line_continuations;
size_t tokeniser_line_number;
struct mode_stack *mode_stack;
struct parser_state *parser_state;
struct here_document *here_documents_first;
struct here_document **here_documents_next;
};
/* apsh.c */
void initialise_parser_context(struct parser_context *ctx);
/* preparser.c */
size_t parse(struct parser_context *ctx, char *code, size_t code_len, size_t *nremovedp);
/* tokeniser.c */
void push_mode(struct parser_context *ctx, enum tokeniser_mode mode);
void pop_mode(struct parser_context *ctx);
size_t parse_preparsed(struct parser_context *ctx, char *code, size_t code_len);
/* parser.c */
void push_end_of_file(struct parser_context *ctx);
void push_whitespace(struct parser_context *ctx, int strict);
void push_semicolon(struct parser_context *ctx, int maybe);
size_t push_symbol(struct parser_context *ctx, char *token, size_t token_len);
void push_quoted(struct parser_context *ctx, char *text, size_t text_len);
void push_escaped(struct parser_context *ctx, char *text, size_t text_len);
void push_unquoted(struct parser_context *ctx, char *text, size_t text_len);
void push_enter(struct parser_context *ctx, enum argument_type type);
void push_leave(struct parser_context *ctx);
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