3aa99676b4
This version fixes a regression with regard to tradtional behavior of the non-standard FreeBSD option "-e". In the previous version "-e quit" caused bc to exit before any computations had been performed, since all -e option parameters were concatenated and parsed as a whole, with quit causing the program to exit as soon as it was parsed. This version parses and executes commands passed with -e one by one and only exits after all prior commands have been executed. This commit is not a SVN merge, since the vendor import had been performed after the import to contrib. Instead the contents of contrib/bc has been removed and the new version is copied over unchanged from vendor/bc/dist.
188 lines
5.4 KiB
C
188 lines
5.4 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) 2018-2020 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 bc programs.
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*
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*/
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#ifndef BC_PROGRAM_H
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#define BC_PROGRAM_H
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#include <stddef.h>
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#include <status.h>
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#include <parse.h>
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#include <lang.h>
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#include <num.h>
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#include <rand.h>
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#define BC_PROG_GLOBALS_IBASE (0)
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#define BC_PROG_GLOBALS_OBASE (1)
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#define BC_PROG_GLOBALS_SCALE (2)
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#if BC_ENABLE_EXTRA_MATH
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#define BC_PROG_MAX_RAND (3)
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#endif // BC_ENABLE_EXTRA_MATH
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#define BC_PROG_GLOBALS_LEN (3 + BC_ENABLE_EXTRA_MATH)
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#define BC_PROG_ONE_CAP (1)
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typedef struct BcProgram {
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BcBigDig globals[BC_PROG_GLOBALS_LEN];
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BcVec globals_v[BC_PROG_GLOBALS_LEN];
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#if BC_ENABLE_EXTRA_MATH && BC_ENABLE_RAND
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BcRNG rng;
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#endif // BC_ENABLE_EXTRA_MATH && BC_ENABLE_RAND
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BcVec results;
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BcVec stack;
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BcVec *consts;
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BcVec *strs;
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BcVec fns;
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BcVec fn_map;
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BcVec vars;
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BcVec var_map;
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BcVec arrs;
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BcVec arr_map;
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#if DC_ENABLED
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BcVec strs_v;
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BcVec tail_calls;
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BcBigDig strm;
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BcNum strmb;
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#endif // DC_ENABLED
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BcNum zero;
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BcNum one;
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#if BC_ENABLED
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BcNum last;
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#endif // BC_ENABLED
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#if DC_ENABLED
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// This uses BC_NUM_LONG_LOG10 because it is used in bc_num_ulong2num(),
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// which attempts to realloc, unless it is big enough. This is big enough.
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BcDig strmb_num[BC_NUM_BIGDIG_LOG10];
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#endif // DC_ENABLED
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BcDig zero_num[BC_PROG_ONE_CAP];
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BcDig one_num[BC_PROG_ONE_CAP];
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} BcProgram;
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#define BC_PROG_STACK(s, n) ((s)->len >= ((size_t) (n)))
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#define BC_PROG_GLOBAL_PTR(v) (bc_vec_top(v))
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#define BC_PROG_GLOBAL(v) (*((BcBigDig*) BC_PROG_GLOBAL_PTR(v)))
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#define BC_PROG_IBASE(p) ((p)->globals[BC_PROG_GLOBALS_IBASE])
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#define BC_PROG_OBASE(p) ((p)->globals[BC_PROG_GLOBALS_OBASE])
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#define BC_PROG_SCALE(p) ((p)->globals[BC_PROG_GLOBALS_SCALE])
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#define BC_PROG_MAIN (0)
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#define BC_PROG_READ (1)
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#define bc_program_retire(p, nres, nops) \
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(bc_vec_npopAt(&(p)->results, (nops), (p)->results.len - (nres + nops)))
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#if DC_ENABLED
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#define BC_PROG_REQ_FUNCS (2)
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#if !BC_ENABLED
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// For dc only, last is always true.
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#define bc_program_copyToVar(p, name, t, last) \
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bc_program_copyToVar(p, name, t)
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#endif // !BC_ENABLED
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#else // DC_ENABLED
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// For bc, 'pop' and 'copy' are always false.
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#define bc_program_pushVar(p, code, bgn, pop, copy) \
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bc_program_pushVar(p, code, bgn)
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#ifdef NDEBUG
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#define BC_PROG_NO_STACK_CHECK
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#endif // NDEBUG
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#endif // DC_ENABLED
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#define BC_PROG_STR(n) ((n)->num == NULL && !(n)->cap)
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#if BC_ENABLED
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#define BC_PROG_NUM(r, n) \
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((r)->t != BC_RESULT_ARRAY && (r)->t != BC_RESULT_STR && !BC_PROG_STR(n))
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#else // BC_ENABLED
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#define BC_PROG_NUM(r, n) ((r)->t != BC_RESULT_STR && !BC_PROG_STR(n))
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// For dc, inst is always BC_INST_ARRAY_ELEM.
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#define bc_program_pushArray(p, code, bgn, inst) \
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bc_program_pushArray(p, code, bgn)
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#endif // BC_ENABLED
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typedef void (*BcProgramUnary)(BcResult*, BcNum*);
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void bc_program_init(BcProgram *p);
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void bc_program_free(BcProgram *p);
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#if BC_DEBUG_CODE
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#if BC_ENABLED && DC_ENABLED
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void bc_program_code(const BcProgram *p);
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void bc_program_printInst(const BcProgram *p, const char *code,
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size_t *restrict bgn);
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void bc_program_printStackDebug(BcProgram* p);
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#endif // BC_ENABLED && DC_ENABLED
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#endif // BC_DEBUG_CODE
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size_t bc_program_search(BcProgram *p, const char* id, bool var);
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size_t bc_program_insertFunc(BcProgram *p, const char *name);
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void bc_program_reset(BcProgram *p);
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void bc_program_exec(BcProgram *p);
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void bc_program_negate(BcResult *r, BcNum *n);
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void bc_program_not(BcResult *r, BcNum *n);
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#if BC_ENABLE_EXTRA_MATH
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void bc_program_trunc(BcResult *r, BcNum *n);
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#endif // BC_ENABLE_EXTRA_MATH
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extern const BcNumBinaryOp bc_program_ops[];
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extern const BcNumBinaryOpReq bc_program_opReqs[];
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extern const BcProgramUnary bc_program_unarys[];
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extern const char bc_program_exprs_name[];
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extern const char bc_program_stdin_name[];
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extern const char bc_program_ready_msg[];
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extern const size_t bc_program_ready_msg_len;
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extern const char bc_program_esc_chars[];
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extern const char bc_program_esc_seqs[];
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#endif // BC_PROGRAM_H
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