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-rw-r--r--miscutils/bc.c143
1 files changed, 72 insertions, 71 deletions
diff --git a/miscutils/bc.c b/miscutils/bc.c
index 3ae88f1..f9d654a 100644
--- a/miscutils/bc.c
+++ b/miscutils/bc.c
@@ -388,27 +388,27 @@ typedef struct BcInstPtr {
IF_BC(size_t results_len_before_call;)
} BcInstPtr;
-// BC_LEX_NEG is not used in lexing; it is only for parsing.
+// XC_LEX_NEG is not used in lexing; it is only for parsing.
typedef enum BcLexType {
XC_LEX_EOF,
XC_LEX_INVALID,
- BC_LEX_1st_op,
- BC_LEX_NEG = BC_LEX_1st_op, // order
+ XC_LEX_1st_op,
+ XC_LEX_NEG = XC_LEX_1st_op, // order
- BC_LEX_OP_POWER, // should
- BC_LEX_OP_MULTIPLY, // match
- BC_LEX_OP_DIVIDE, // INST
- BC_LEX_OP_MODULUS, // constants
- BC_LEX_OP_PLUS, // for
- BC_LEX_OP_MINUS, // these
+ XC_LEX_OP_POWER, // should
+ XC_LEX_OP_MULTIPLY, // match
+ XC_LEX_OP_DIVIDE, // INST
+ XC_LEX_OP_MODULUS, // constants
+ XC_LEX_OP_PLUS, // for
+ XC_LEX_OP_MINUS, // these
- BC_LEX_OP_REL_EQ, // opeartions
- BC_LEX_OP_REL_LE, // |
- BC_LEX_OP_REL_GE, // |
- BC_LEX_OP_REL_NE, // |
- BC_LEX_OP_REL_LT, // |
- BC_LEX_OP_REL_GT, // |
+ XC_LEX_OP_REL_EQ, // opeartions
+ XC_LEX_OP_REL_LE, // |
+ XC_LEX_OP_REL_GE, // |
+ XC_LEX_OP_REL_NE, // |
+ XC_LEX_OP_REL_LT, // |
+ XC_LEX_OP_REL_GT, // |
BC_LEX_OP_BOOL_NOT, // |
BC_LEX_OP_BOOL_OR, // |
@@ -593,7 +593,7 @@ static ALWAYS_INLINE long bc_parse_exprs(unsigned i)
}
// This is an array of data for operators that correspond to
-// [BC_LEX_1st_op...BC_LEX_last_op] token types.
+// [XC_LEX_1st_op...] token types.
static const uint8_t bc_parse_ops[] = {
#define OP(p,l) ((int)(l) * 0x10 + (p))
OP(1, false), // neg
@@ -617,18 +617,18 @@ static const //BcLexType - should be this type
uint8_t
dc_char_to_LEX[] = {
/* %&'( */
- BC_LEX_OP_MODULUS, XC_LEX_INVALID, XC_LEX_INVALID, BC_LEX_LPAREN,
+ XC_LEX_OP_MODULUS, XC_LEX_INVALID, XC_LEX_INVALID, BC_LEX_LPAREN,
/* )*+, */
- XC_LEX_INVALID, BC_LEX_OP_MULTIPLY, BC_LEX_OP_PLUS, XC_LEX_INVALID,
+ XC_LEX_INVALID, XC_LEX_OP_MULTIPLY, XC_LEX_OP_PLUS, XC_LEX_INVALID,
/* -./ */
- BC_LEX_OP_MINUS, XC_LEX_INVALID, BC_LEX_OP_DIVIDE,
+ XC_LEX_OP_MINUS, XC_LEX_INVALID, XC_LEX_OP_DIVIDE,
/* 0123456789 */
XC_LEX_INVALID, XC_LEX_INVALID, XC_LEX_INVALID, XC_LEX_INVALID,
XC_LEX_INVALID, XC_LEX_INVALID, XC_LEX_INVALID, XC_LEX_INVALID,
XC_LEX_INVALID, XC_LEX_INVALID,
/* :;<=>?@ */
- DC_LEX_COLON, BC_LEX_SCOLON, BC_LEX_OP_REL_GT, BC_LEX_OP_REL_EQ,
- BC_LEX_OP_REL_LT, BC_LEX_KEY_READ, XC_LEX_INVALID,
+ DC_LEX_COLON, BC_LEX_SCOLON, XC_LEX_OP_REL_GT, XC_LEX_OP_REL_EQ,
+ XC_LEX_OP_REL_LT, BC_LEX_KEY_READ, XC_LEX_INVALID,
/* ABCDEFGH */
XC_LEX_INVALID, XC_LEX_INVALID, XC_LEX_INVALID, XC_LEX_INVALID,
XC_LEX_INVALID, XC_LEX_INVALID, DC_LEX_EQ_NO_REG, XC_LEX_INVALID,
@@ -641,7 +641,7 @@ dc_char_to_LEX[] = {
/* Z[\] */
BC_LEX_KEY_LENGTH, XC_LEX_INVALID, XC_LEX_INVALID, XC_LEX_INVALID,
/* ^_` */
- BC_LEX_OP_POWER, BC_LEX_NEG, XC_LEX_INVALID,
+ XC_LEX_OP_POWER, XC_LEX_NEG, XC_LEX_INVALID,
/* abcdefgh */
DC_LEX_ASCIIFY, XC_LEX_INVALID, DC_LEX_CLEAR_STACK, DC_LEX_DUPLICATE,
DC_LEX_ELSE, DC_LEX_PRINT_STACK, XC_LEX_INVALID, XC_LEX_INVALID,
@@ -660,7 +660,8 @@ static const //BcInst - should be this type. Using signed narrow type since DC_I
int8_t
dc_LEX_to_INST[] = { // (so many INVALIDs b/c dc parser does not generate these LEXs) // corresponding BC_LEX_xyz:
DC_INST_INVALID, DC_INST_INVALID, // EOF INVALID
- DC_INST_INVALID, XC_INST_POWER, XC_INST_MULTIPLY, XC_INST_DIVIDE, // NEG OP_POWER OP_MULTIPLY OP_DIVIDE
+ DC_INST_INVALID, // NEG
+ XC_INST_POWER, XC_INST_MULTIPLY, XC_INST_DIVIDE, // OP_POWER OP_MULTIPLY OP_DIVIDE
XC_INST_MODULUS, XC_INST_PLUS, XC_INST_MINUS, // OP_MODULUS OP_PLUS OP_MINUS
DC_INST_INVALID, DC_INST_INVALID, DC_INST_INVALID, DC_INST_INVALID, // OP_REL_EQ OP_REL_LE OP_REL_GE OP_REL_NE
DC_INST_INVALID, DC_INST_INVALID, // OP_REL_LT OP_REL_GT
@@ -3159,7 +3160,7 @@ static BC_STATUS zbc_lex_token(BcLex *l)
bc_lex_whitespace(l);
break;
case '!':
- bc_lex_assign(l, BC_LEX_OP_REL_NE, BC_LEX_OP_BOOL_NOT);
+ bc_lex_assign(l, XC_LEX_OP_REL_NE, BC_LEX_OP_BOOL_NOT);
if (l->t.t == BC_LEX_OP_BOOL_NOT) {
s = bc_POSIX_does_not_allow_bool_ops_this_is_bad("!");
IF_ERROR_RETURN_POSSIBLE(if (s) RETURN_STATUS(s));
@@ -3174,7 +3175,7 @@ static BC_STATUS zbc_lex_token(BcLex *l)
bc_lex_lineComment(l);
break;
case '%':
- bc_lex_assign(l, BC_LEX_OP_ASSIGN_MODULUS, BC_LEX_OP_MODULUS);
+ bc_lex_assign(l, BC_LEX_OP_ASSIGN_MODULUS, XC_LEX_OP_MODULUS);
break;
case '&':
c2 = l->buf[l->i];
@@ -3193,7 +3194,7 @@ static BC_STATUS zbc_lex_token(BcLex *l)
l->t.t = (BcLexType)(c - '(' + BC_LEX_LPAREN);
break;
case '*':
- bc_lex_assign(l, BC_LEX_OP_ASSIGN_MULTIPLY, BC_LEX_OP_MULTIPLY);
+ bc_lex_assign(l, BC_LEX_OP_ASSIGN_MULTIPLY, XC_LEX_OP_MULTIPLY);
break;
case '+':
c2 = l->buf[l->i];
@@ -3201,7 +3202,7 @@ static BC_STATUS zbc_lex_token(BcLex *l)
++l->i;
l->t.t = BC_LEX_OP_INC;
} else
- bc_lex_assign(l, BC_LEX_OP_ASSIGN_PLUS, BC_LEX_OP_PLUS);
+ bc_lex_assign(l, BC_LEX_OP_ASSIGN_PLUS, XC_LEX_OP_PLUS);
break;
case ',':
l->t.t = BC_LEX_COMMA;
@@ -3212,7 +3213,7 @@ static BC_STATUS zbc_lex_token(BcLex *l)
++l->i;
l->t.t = BC_LEX_OP_DEC;
} else
- bc_lex_assign(l, BC_LEX_OP_ASSIGN_MINUS, BC_LEX_OP_MINUS);
+ bc_lex_assign(l, BC_LEX_OP_ASSIGN_MINUS, XC_LEX_OP_MINUS);
break;
case '.':
if (isdigit(l->buf[l->i]))
@@ -3227,7 +3228,7 @@ static BC_STATUS zbc_lex_token(BcLex *l)
if (c2 == '*')
s = zbc_lex_comment(l);
else
- bc_lex_assign(l, BC_LEX_OP_ASSIGN_DIVIDE, BC_LEX_OP_DIVIDE);
+ bc_lex_assign(l, BC_LEX_OP_ASSIGN_DIVIDE, XC_LEX_OP_DIVIDE);
break;
case '0':
case '1':
@@ -3251,13 +3252,13 @@ static BC_STATUS zbc_lex_token(BcLex *l)
l->t.t = BC_LEX_SCOLON;
break;
case '<':
- bc_lex_assign(l, BC_LEX_OP_REL_LE, BC_LEX_OP_REL_LT);
+ bc_lex_assign(l, XC_LEX_OP_REL_LE, XC_LEX_OP_REL_LT);
break;
case '=':
- bc_lex_assign(l, BC_LEX_OP_REL_EQ, BC_LEX_OP_ASSIGN);
+ bc_lex_assign(l, XC_LEX_OP_REL_EQ, BC_LEX_OP_ASSIGN);
break;
case '>':
- bc_lex_assign(l, BC_LEX_OP_REL_GE, BC_LEX_OP_REL_GT);
+ bc_lex_assign(l, XC_LEX_OP_REL_GE, XC_LEX_OP_REL_GT);
break;
case '[':
case ']':
@@ -3271,7 +3272,7 @@ static BC_STATUS zbc_lex_token(BcLex *l)
s = bc_error_bad_character(c);
break;
case '^':
- bc_lex_assign(l, BC_LEX_OP_ASSIGN_POWER, BC_LEX_OP_POWER);
+ bc_lex_assign(l, BC_LEX_OP_ASSIGN_POWER, XC_LEX_OP_POWER);
break;
case 'a':
case 'b':
@@ -3395,8 +3396,8 @@ static BC_STATUS zdc_lex_token(BcLex *l)
static const //BcLexType - should be this type, but narrower type saves size:
uint8_t
dc_lex_regs[] = {
- BC_LEX_OP_REL_EQ, BC_LEX_OP_REL_LE, BC_LEX_OP_REL_GE, BC_LEX_OP_REL_NE,
- BC_LEX_OP_REL_LT, BC_LEX_OP_REL_GT, BC_LEX_SCOLON, DC_LEX_COLON,
+ XC_LEX_OP_REL_EQ, XC_LEX_OP_REL_LE, XC_LEX_OP_REL_GE, XC_LEX_OP_REL_NE,
+ XC_LEX_OP_REL_LT, XC_LEX_OP_REL_GT, BC_LEX_SCOLON, DC_LEX_COLON,
DC_LEX_ELSE, DC_LEX_LOAD, DC_LEX_LOAD_POP, BC_LEX_OP_ASSIGN,
DC_LEX_STORE_PUSH,
};
@@ -3446,11 +3447,11 @@ static BC_STATUS zdc_lex_token(BcLex *l)
case '!':
c2 = l->buf[l->i];
if (c2 == '=')
- l->t.t = BC_LEX_OP_REL_NE;
+ l->t.t = XC_LEX_OP_REL_NE;
else if (c2 == '<')
- l->t.t = BC_LEX_OP_REL_LE;
+ l->t.t = XC_LEX_OP_REL_LE;
else if (c2 == '>')
- l->t.t = BC_LEX_OP_REL_GE;
+ l->t.t = XC_LEX_OP_REL_GE;
else
RETURN_STATUS(bc_error_bad_character(c));
++l->i;
@@ -3686,7 +3687,7 @@ static size_t bc_program_addFunc(char *name)
// 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_TOKEN_2_INST(t) ((char) ((t) - BC_LEX_OP_POWER + XC_INST_POWER))
+#define BC_TOKEN_2_INST(t) ((char) ((t) - XC_LEX_OP_POWER + XC_INST_POWER))
static BcStatus bc_parse_expr_empty_ok(BcParse *p, uint8_t flags);
@@ -3726,19 +3727,19 @@ static BC_STATUS zbc_parse_stmt_allow_NLINE_before(BcParse *p, const char *after
static void bc_parse_operator(BcParse *p, BcLexType type, size_t start,
size_t *nexprs)
{
- char l, r = bc_parse_op_PREC(type - BC_LEX_1st_op);
- bool left = bc_parse_op_LEFT(type - BC_LEX_1st_op);
+ char l, r = bc_parse_op_PREC(type - XC_LEX_1st_op);
+ bool left = bc_parse_op_LEFT(type - XC_LEX_1st_op);
while (p->ops.len > start) {
BcLexType t = BC_PARSE_TOP_OP(p);
if (t == BC_LEX_LPAREN) break;
- l = bc_parse_op_PREC(t - BC_LEX_1st_op);
+ l = bc_parse_op_PREC(t - XC_LEX_1st_op);
if (l >= r && (l != r || !left)) break;
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);
+ *nexprs -= (t != BC_LEX_OP_BOOL_NOT && t != XC_LEX_NEG);
}
bc_vec_push(&p->ops, &type);
@@ -3756,7 +3757,7 @@ static BC_STATUS zbc_parse_rightParen(BcParse *p, size_t ops_bgn, size_t *nexs)
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);
+ *nexs -= (top != BC_LEX_OP_BOOL_NOT && top != XC_LEX_NEG);
if (p->ops.len <= ops_bgn)
RETURN_STATUS(bc_error_bad_expression());
@@ -4032,13 +4033,13 @@ static BC_STATUS zbc_parse_minus(BcParse *p, BcInst *prev, size_t ops_bgn,
type = rparen || etype == BC_INST_INC_POST || etype == BC_INST_DEC_POST ||
(etype >= XC_INST_NUM && etype <= XC_INST_SQRT) ?
- BC_LEX_OP_MINUS :
- BC_LEX_NEG;
+ XC_LEX_OP_MINUS :
+ XC_LEX_NEG;
*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.
- if (type != BC_LEX_OP_MINUS)
+ if (type != XC_LEX_OP_MINUS)
bc_vec_push(&p->ops, &type);
else
bc_parse_operator(p, type, ops_bgn, nexprs);
@@ -4523,9 +4524,9 @@ static BC_STATUS zbc_parse_stmt_possibly_auto(BcParse *p, bool auto_allowed)
dbg_lex("%s:%d p->l.t.t:%d", __func__, __LINE__, p->l.t.t);
switch (p->l.t.t) {
+ case XC_LEX_OP_MINUS:
case BC_LEX_OP_INC:
case BC_LEX_OP_DEC:
- case BC_LEX_OP_MINUS:
case BC_LEX_OP_BOOL_NOT:
case BC_LEX_LPAREN:
case BC_LEX_NAME:
@@ -4642,7 +4643,7 @@ static BcStatus bc_parse_expr_empty_ok(BcParse *p, uint8_t flags)
s = zbc_parse_incdec(p, &prev, &paren_expr, &nexprs, flags);
rprn = get_token = bin_last = false;
break;
- case BC_LEX_OP_MINUS:
+ case XC_LEX_OP_MINUS:
s = zbc_parse_minus(p, &prev, ops_bgn, rprn, &nexprs);
rprn = get_token = false;
bin_last = prev == XC_INST_MINUS;
@@ -4665,17 +4666,17 @@ static BcStatus bc_parse_expr_empty_ok(BcParse *p, uint8_t flags)
break;
}
// Fallthrough.
- case BC_LEX_OP_POWER:
- case BC_LEX_OP_MULTIPLY:
- case BC_LEX_OP_DIVIDE:
- case BC_LEX_OP_MODULUS:
- case BC_LEX_OP_PLUS:
- case BC_LEX_OP_REL_EQ:
- case BC_LEX_OP_REL_LE:
- case BC_LEX_OP_REL_GE:
- case BC_LEX_OP_REL_NE:
- case BC_LEX_OP_REL_LT:
- case BC_LEX_OP_REL_GT:
+ case XC_LEX_OP_POWER:
+ case XC_LEX_OP_MULTIPLY:
+ case XC_LEX_OP_DIVIDE:
+ case XC_LEX_OP_MODULUS:
+ case XC_LEX_OP_PLUS:
+ case XC_LEX_OP_REL_EQ:
+ case XC_LEX_OP_REL_LE:
+ case XC_LEX_OP_REL_GE:
+ case XC_LEX_OP_REL_NE:
+ case XC_LEX_OP_REL_LT:
+ case XC_LEX_OP_REL_GT:
case BC_LEX_OP_BOOL_NOT:
case BC_LEX_OP_BOOL_OR:
case BC_LEX_OP_BOOL_AND:
@@ -4684,12 +4685,12 @@ static BcStatus bc_parse_expr_empty_ok(BcParse *p, uint8_t flags)
) {
return bc_error_bad_expression();
}
- nrelops += t >= BC_LEX_OP_REL_EQ && t <= BC_LEX_OP_REL_GT;
+ nrelops += (t >= XC_LEX_OP_REL_EQ && t <= XC_LEX_OP_REL_GT);
prev = BC_TOKEN_2_INST(t);
bc_parse_operator(p, t, ops_bgn, &nexprs);
s = zbc_lex_next(&p->l);
rprn = get_token = false;
- bin_last = t != BC_LEX_OP_BOOL_NOT;
+ bin_last = (t != BC_LEX_OP_BOOL_NOT);
break;
case BC_LEX_LPAREN:
if (BC_PARSE_LEAF(prev, rprn))
@@ -4793,7 +4794,7 @@ static BcStatus bc_parse_expr_empty_ok(BcParse *p, uint8_t flags)
bc_parse_push(p, BC_TOKEN_2_INST(top));
- nexprs -= (top != BC_LEX_OP_BOOL_NOT && top != BC_LEX_NEG);
+ nexprs -= (top != BC_LEX_OP_BOOL_NOT && top != XC_LEX_NEG);
bc_vec_pop(&p->ops);
}
@@ -4912,14 +4913,14 @@ static BC_STATUS zdc_parse_token(BcParse *p, BcLexType t)
s = BC_STATUS_SUCCESS;
get_token = true;
switch (t) {
- case BC_LEX_OP_REL_EQ:
- case BC_LEX_OP_REL_LE:
- case BC_LEX_OP_REL_GE:
- case BC_LEX_OP_REL_NE:
- case BC_LEX_OP_REL_LT:
- case BC_LEX_OP_REL_GT:
+ case XC_LEX_OP_REL_EQ:
+ case XC_LEX_OP_REL_LE:
+ case XC_LEX_OP_REL_GE:
+ case XC_LEX_OP_REL_NE:
+ case XC_LEX_OP_REL_LT:
+ case XC_LEX_OP_REL_GT:
dbg_lex("%s:%d LEX_OP_REL_xyz", __func__, __LINE__);
- s = zdc_parse_cond(p, t - BC_LEX_OP_REL_EQ + XC_INST_REL_EQ);
+ s = zdc_parse_cond(p, t - XC_LEX_OP_REL_EQ + XC_INST_REL_EQ);
get_token = false;
break;
case BC_LEX_SCOLON:
@@ -4931,7 +4932,7 @@ static BC_STATUS zdc_parse_token(BcParse *p, BcLexType t)
dbg_lex("%s:%d LEX_STR", __func__, __LINE__);
dc_parse_string(p);
break;
- case BC_LEX_NEG:
+ case XC_LEX_NEG:
dbg_lex("%s:%d LEX_NEG", __func__, __LINE__);
s = zbc_lex_next(&p->l);
if (s) RETURN_STATUS(s);
generated by cgit v1.1 at 2024-11-06 18:27:55 +0000