d101cdd6ed
This update fixes a few issues in history editing and the processing of the "quit" function. The "quit" function will no longer cause bc to exit when encountered in a script file (before any command from the script has been executed). New functions is_number(), is_string return 1 if the passed argument is a number resp. a string. The asciify() function has been extended to support the conversion of an array of numbers into a string. Merge commit '1a63323d17fedb05b6962853e821c9d7c6b9853e'
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) 2018-2023 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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