2 * *****************************************************************************
4 * SPDX-License-Identifier: BSD-2-Clause
6 * Copyright (c) 2018-2021 Gavin D. Howard and contributors.
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30 * *****************************************************************************
32 * Definitions for dc only.
46 * The main function for dc. It just sets variables and passes its arguments
47 * through to @a bc_vm_boot().
49 void dc_main(int argc, char *argv[]);
51 // A reference to the dc help text.
52 extern const char dc_help[];
55 * The @a BcLexNext function for dc. (See include/lex.h for a definition of
59 void dc_lex_token(BcLex *l);
62 * Returns true if the negative char `_` should be treated as a command or not.
63 * dc considers negative a command if it does *not* immediately proceed a
64 * number. Otherwise, it's just considered a negative.
66 * @return True if a negative should be treated as a command, false if it
67 * should be treated as a negative sign on a number.
69 bool dc_lex_negCommand(BcLex *l);
71 // References to the signal message and its length.
72 extern const char dc_sig_msg[];
73 extern const uchar dc_sig_msg_len;
75 // References to an array and its length. This array is an array of lex tokens
76 // that, when encountered, should be treated as commands that take a register.
77 extern const uint8_t dc_lex_regs[];
78 extern const size_t dc_lex_regs_len;
80 // References to an array of tokens and its length. This array corresponds to
81 // the ASCII table, starting at double quotes. This makes it easy to look up
82 // tokens for characters.
83 extern const uint8_t dc_lex_tokens[];
84 extern const uint8_t dc_parse_insts[];
87 * The @a BcParseParse function for dc. (See include/parse.h for a definition of
89 * @param p The parser.
91 void dc_parse_parse(BcParse *p);
94 * The @a BcParseExpr function for dc. (See include/parse.h for a definition of
96 * @param p The parser.
97 * @param flags Flags that define the requirements that the parsed code must
98 * meet or an error will result. See @a BcParseExpr for more info.
100 void dc_parse_expr(BcParse *p, uint8_t flags);