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bc: shorten one message, make defines more readable

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text	   data	    bss	    dec	    hex	filename
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 979893	    485	   7296	 987674	  f121a	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2018-12-14 23:32:51 +01:00
parent 7b1df3db97
commit 0154d78738
1 changed files with 35 additions and 48 deletions
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55
miscutils/bc.c
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@ -578,36 +578,25 @@ typedef struct BcLex {
#define BC_PARSE_TOP_FLAG(parse) (*(BC_PARSE_TOP_FLAG_PTR(parse)))
#define BC_PARSE_FLAG_FUNC_INNER (1 << 0)
#define BC_PARSE_FUNC_INNER(parse) \
(BC_PARSE_TOP_FLAG(parse) & BC_PARSE_FLAG_FUNC_INNER)
#define BC_PARSE_FLAG_FUNC (1 << 1)
#define BC_PARSE_FUNC(parse) (BC_PARSE_TOP_FLAG(parse) & BC_PARSE_FLAG_FUNC)
#define BC_PARSE_FLAG_BODY (1 << 2)
#define BC_PARSE_BODY(parse) (BC_PARSE_TOP_FLAG(parse) & BC_PARSE_FLAG_BODY)
#define BC_PARSE_FLAG_LOOP (1 << 3)
#define BC_PARSE_LOOP(parse) (BC_PARSE_TOP_FLAG(parse) & BC_PARSE_FLAG_LOOP)
#define BC_PARSE_FLAG_LOOP_INNER (1 << 4)
#define BC_PARSE_LOOP_INNER(parse) \
(BC_PARSE_TOP_FLAG(parse) & BC_PARSE_FLAG_LOOP_INNER)
#define BC_PARSE_FLAG_IF (1 << 5)
#define BC_PARSE_IF(parse) (BC_PARSE_TOP_FLAG(parse) & BC_PARSE_FLAG_IF)
#define BC_PARSE_FLAG_ELSE (1 << 6)
#define BC_PARSE_ELSE(parse) (BC_PARSE_TOP_FLAG(parse) & BC_PARSE_FLAG_ELSE)
#define BC_PARSE_FLAG_IF_END (1 << 7)
#define BC_PARSE_IF_END(parse) (BC_PARSE_TOP_FLAG(parse) & BC_PARSE_FLAG_IF_END)
#define BC_PARSE_CAN_EXEC(parse) \
(!(BC_PARSE_TOP_FLAG(parse) & \
(BC_PARSE_FLAG_FUNC_INNER | BC_PARSE_FLAG_FUNC | BC_PARSE_FLAG_BODY | \
BC_PARSE_FLAG_LOOP | BC_PARSE_FLAG_LOOP_INNER | BC_PARSE_FLAG_IF | \
BC_PARSE_FLAG_ELSE | BC_PARSE_FLAG_IF_END)))
// If we have none of the above bits, we can stop parsing and execute already parsed chunk
#define BC_PARSE_CAN_EXEC(parse) (BC_PARSE_TOP_FLAG(parse) == 0)
#define BC_PARSE_FUNC_INNER(parse) (BC_PARSE_TOP_FLAG(parse) & BC_PARSE_FLAG_FUNC_INNER)
#define BC_PARSE_FUNC(parse) (BC_PARSE_TOP_FLAG(parse) & BC_PARSE_FLAG_FUNC)
#define BC_PARSE_BODY(parse) (BC_PARSE_TOP_FLAG(parse) & BC_PARSE_FLAG_BODY)
#define BC_PARSE_LOOP(parse) (BC_PARSE_TOP_FLAG(parse) & BC_PARSE_FLAG_LOOP)
#define BC_PARSE_LOOP_INNER(parse) (BC_PARSE_TOP_FLAG(parse) & BC_PARSE_FLAG_LOOP_INNER)
#define BC_PARSE_IF(parse) (BC_PARSE_TOP_FLAG(parse) & BC_PARSE_FLAG_IF)
#define BC_PARSE_ELSE(parse) (BC_PARSE_TOP_FLAG(parse) & BC_PARSE_FLAG_ELSE)
#define BC_PARSE_IF_END(parse) (BC_PARSE_TOP_FLAG(parse) & BC_PARSE_FLAG_IF_END)
struct BcParse;
@ -3611,7 +3600,7 @@ static void bc_parse_create(BcParse *p, size_t func)
// We can calculate the conversion between tokens and exprs by subtracting the
// position of the first operator in the lex enum and adding the position of the
// first in the expr enum. Note: This only works for binary operators.
#define BC_PARSE_TOKEN_INST(t) ((char) ((t) - BC_LEX_NEG + BC_INST_NEG))
#define BC_TOKEN_2_INST(t) ((char) ((t) - BC_LEX_NEG + BC_INST_NEG))
static BC_STATUS zbc_parse_else(BcParse *p);
static BC_STATUS zbc_parse_stmt(BcParse *p);
@ -3636,7 +3625,7 @@ static void bc_parse_operator(BcParse *p, BcLexType type, size_t start,
l = bc_parse_op_PREC(t - BC_LEX_OP_INC);
if (l >= r && (l != r || !left)) break;
bc_parse_push(p, BC_PARSE_TOKEN_INST(t));
bc_parse_push(p, BC_TOKEN_2_INST(t));
bc_vec_pop(&p->ops);
*nexprs -= (t != BC_LEX_OP_BOOL_NOT && t != BC_LEX_NEG);
}
@ -3653,7 +3642,7 @@ static BC_STATUS zbc_parse_rightParen(BcParse *p, size_t ops_bgn, size_t *nexs)
top = BC_PARSE_TOP_OP(p);
while (top != BC_LEX_LPAREN) {
bc_parse_push(p, BC_PARSE_TOKEN_INST(top));
bc_parse_push(p, BC_TOKEN_2_INST(top));
bc_vec_pop(&p->ops);
*nexs -= top != BC_LEX_OP_BOOL_NOT && top != BC_LEX_NEG;
@ -3948,7 +3937,7 @@ static BC_STATUS zbc_parse_minus(BcParse *p, BcInst *prev, size_t ops_bgn,
(etype >= BC_INST_NUM && etype <= BC_INST_SQRT) ?
BC_LEX_OP_MINUS :
BC_LEX_NEG;
*prev = BC_PARSE_TOKEN_INST(type);
*prev = BC_TOKEN_2_INST(type);
// We can just push onto the op stack because this is the largest
// precedence operator that gets pushed. Inc/dec does not.
@ -4747,10 +4736,9 @@ static BcStatus bc_parse_expr_empty_ok(BcParse *p, uint8_t flags, BcParseNext ne
prev != BC_INST_OBASE && prev != BC_INST_LAST)
{
s = bc_error("bad assignment:"
" left side must be scale,"
" ibase, obase, last, var,"
" left side must be variable"
" or array element"
);
); // note: shared string
break;
}
}
@ -4777,7 +4765,7 @@ static BcStatus bc_parse_expr_empty_ok(BcParse *p, uint8_t flags, BcParseNext ne
}
nrelops += t >= BC_LEX_OP_REL_EQ && t <= BC_LEX_OP_REL_GT;
prev = BC_PARSE_TOKEN_INST(t);
prev = BC_TOKEN_2_INST(t);
bc_parse_operator(p, t, ops_bgn, &nexprs);
s = zbc_lex_next(&p->l);
rprn = get_token = false;
@ -4926,7 +4914,7 @@ static BcStatus bc_parse_expr_empty_ok(BcParse *p, uint8_t flags, BcParseNext ne
if (top == BC_LEX_LPAREN || top == BC_LEX_RPAREN)
return bc_error_bad_expression();
bc_parse_push(p, BC_PARSE_TOKEN_INST(top));
bc_parse_push(p, BC_TOKEN_2_INST(top));
nexprs -= top != BC_LEX_OP_BOOL_NOT && top != BC_LEX_NEG;
bc_vec_pop(&p->ops);
@ -5977,10 +5965,9 @@ static BC_STATUS zbc_program_assign(char inst)
if (left->t == BC_RESULT_CONSTANT || left->t == BC_RESULT_TEMP)
RETURN_STATUS(bc_error("bad assignment:"
" left side must be scale,"
" ibase, obase, last, var,"
" left side must be variable"
" or array element"
));
)); // note: shared string
#if ENABLE_BC
if (inst == BC_INST_ASSIGN_DIVIDE && !bc_num_cmp(r, &G.prog.zero))