78bc019d22
This version adds support for command line editing and history using the libedit or readline libraries in addition to the line editing features available in previous versions. The version in the base system is configured to use libedit. This allows to choose between emacs and vi line editing commands and to use command overrides via a ~/.editrc file. Merge commit 'bd54318046bfee055b140705a5cfd4148e78da07' PR: 264010 MFC after: 2 weeks
110 lines
3.6 KiB
C
110 lines
3.6 KiB
C
/*
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* *****************************************************************************
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2018-2021 Gavin D. Howard and contributors.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* *****************************************************************************
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*
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* Definitions for dc only.
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*
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*/
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#ifndef BC_DC_H
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#define BC_DC_H
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#if DC_ENABLED
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#include <status.h>
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#include <lex.h>
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#include <parse.h>
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/**
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* The main function for dc. It just sets variables and passes its arguments
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* through to @a bc_vm_boot().
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*/
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void
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dc_main(int argc, char* argv[]);
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// A reference to the dc help text.
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extern const char dc_help[];
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/**
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* The @a BcLexNext function for dc. (See include/lex.h for a definition of
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* @a BcLexNext.)
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* @param l The lexer.
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*/
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void
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dc_lex_token(BcLex* l);
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/**
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* Returns true if the negative char `_` should be treated as a command or not.
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* dc considers negative a command if it does *not* immediately proceed a
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* number. Otherwise, it's just considered a negative.
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* @param l The lexer.
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* @return True if a negative should be treated as a command, false if it
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* should be treated as a negative sign on a number.
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*/
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bool
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dc_lex_negCommand(BcLex* l);
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// References to the signal message and its length.
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extern const char dc_sig_msg[];
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extern const uchar dc_sig_msg_len;
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// References to an array and its length. This array is an array of lex tokens
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// that, when encountered, should be treated as commands that take a register.
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extern const uint8_t dc_lex_regs[];
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extern const size_t dc_lex_regs_len;
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// References to an array of tokens and its length. This array corresponds to
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// the ASCII table, starting at double quotes. This makes it easy to look up
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// tokens for characters.
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extern const uint8_t dc_lex_tokens[];
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extern const uint8_t dc_parse_insts[];
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/**
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* The @a BcParseParse function for dc. (See include/parse.h for a definition of
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* @a BcParseParse.)
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* @param p The parser.
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*/
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void
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dc_parse_parse(BcParse* p);
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/**
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* The @a BcParseExpr function for dc. (See include/parse.h for a definition of
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* @a BcParseExpr.)
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* @param p The parser.
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* @param flags Flags that define the requirements that the parsed code must
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* meet or an error will result. See @a BcParseExpr for more info.
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*/
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void
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dc_parse_expr(BcParse* p, uint8_t flags);
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#endif // DC_ENABLED
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#endif // BC_DC_H
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