diff options
| -rw-r--r-- | miscutils/bc.c | 81 |
1 files changed, 39 insertions, 42 deletions
diff --git a/miscutils/bc.c b/miscutils/bc.c index 8556a0e..68e3668 100644 --- a/miscutils/bc.c +++ b/miscutils/bc.c @@ -253,19 +253,19 @@ typedef enum BcInst { #endif XC_INST_NEG, // order - XC_INST_POWER, // should - XC_INST_MULTIPLY, // match - XC_INST_DIVIDE, // LEX - XC_INST_MODULUS, // constants - XC_INST_PLUS, // for - XC_INST_MINUS, // these - - XC_INST_REL_EQ, // operations - XC_INST_REL_LE, // | - XC_INST_REL_GE, // | - XC_INST_REL_NE, // | - XC_INST_REL_LT, // | - XC_INST_REL_GT, // | + XC_INST_REL_EQ, // should + XC_INST_REL_LE, // match + XC_INST_REL_GE, // LEX + XC_INST_REL_NE, // constants + XC_INST_REL_LT, // for + XC_INST_REL_GT, // these + + XC_INST_POWER, // operations + XC_INST_MULTIPLY, // | + XC_INST_DIVIDE, // | + XC_INST_MODULUS, // | + XC_INST_PLUS, // | + XC_INST_MINUS, // | XC_INST_BOOL_NOT, // | XC_INST_BOOL_OR, // | @@ -401,20 +401,20 @@ typedef enum BcLexType { XC_LEX_1st_op, XC_LEX_NEG = XC_LEX_1st_op, // order - 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 - - XC_LEX_OP_REL_EQ, // operations - 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, // | - XC_LEX_OP_last = XC_LEX_OP_REL_GT, + XC_LEX_OP_REL_EQ, // should + XC_LEX_OP_REL_LE, // match + XC_LEX_OP_REL_GE, // INST + XC_LEX_OP_REL_NE, // constants + XC_LEX_OP_REL_LT, // for + XC_LEX_OP_REL_GT, // these + + XC_LEX_OP_POWER, // operations + XC_LEX_OP_MULTIPLY, // | + XC_LEX_OP_DIVIDE, // | + XC_LEX_OP_MODULUS, // | + XC_LEX_OP_PLUS, // | + XC_LEX_OP_MINUS, // | + XC_LEX_OP_last = XC_LEX_OP_MINUS, #if ENABLE_BC BC_LEX_OP_BOOL_NOT, // | BC_LEX_OP_BOOL_OR, // | @@ -432,16 +432,16 @@ typedef enum BcLexType { BC_LEX_OP_INC, BC_LEX_OP_DEC, - BC_LEX_LPAREN, - BC_LEX_RPAREN, + BC_LEX_LPAREN, // () are 0x28 and 0x29 + BC_LEX_RPAREN, // must be LPAREN+1: code uses (c - '(' + BC_LEX_LPAREN) - BC_LEX_LBRACKET, + BC_LEX_LBRACKET, // [] are 0x5B and 5D BC_LEX_COMMA, - BC_LEX_RBRACKET, + BC_LEX_RBRACKET, // must be LBRACKET+2: code uses (c - '[' + BC_LEX_LBRACKET) - BC_LEX_LBRACE, // '{' is 0x7B, '}' is 0x7D, + BC_LEX_LBRACE, // {} are 0x7B and 0x7D BC_LEX_SCOLON, - BC_LEX_RBRACE, // should be LBRACE+2: code uses (c - '{' + BC_LEX_LBRACE) + BC_LEX_RBRACE, // must be LBRACE+2: code uses (c - '{' + BC_LEX_LBRACE) BC_LEX_KEY_1st_keyword, BC_LEX_KEY_AUTO = BC_LEX_KEY_1st_keyword, @@ -582,8 +582,8 @@ enum { ((uint64_t)((a << 0)+(b << 1)+(c << 2)+(d << 3)+(e << 4)+(f << 5)+(g << 6)+(h << 7))) BC_PARSE_EXPRS_BITS = 0 // corresponding BC_LEX_xyz: + (EXBITS(0,0,0,0,0,1,1,1) << (0*8)) // 0: EOF INVAL NL WS STR NAME NUM - - + (EXBITS(1,1,1,1,1,1,1,1) << (1*8)) // 8: ^ * / % + - == <= - + (EXBITS(1,1,1,1,1,1,1,1) << (2*8)) // 16: >= != < > ! || && ^= + + (EXBITS(1,1,1,1,1,1,1,1) << (1*8)) // 8: == <= >= != < > ^ * + + (EXBITS(1,1,1,1,1,1,1,1) << (2*8)) // 16: / % + - ! || && ^= + (EXBITS(1,1,1,1,1,1,1,1) << (3*8)) // 24: *= /= %= += -= = ++ -- + (EXBITS(1,1,0,0,0,0,0,0) << (4*8)) // 32: ( ) [ , ] { ; } + (EXBITS(0,0,0,0,0,0,0,1) << (5*8)) // 40: auto break cont define else for halt ibase @@ -612,10 +612,10 @@ static ALWAYS_INLINE long bc_parse_exprs(unsigned i) static const uint8_t bc_parse_ops[] = { #define OP(p,l) ((int)(l) * 0x10 + (p)) OP(1, false), // neg + OP(6, true ), OP( 6, true ), OP( 6, true ), OP( 6, true ), OP( 6, true ), OP( 6, true ), // == <= >= != < > OP(2, false), // pow OP(3, true ), OP( 3, true ), OP( 3, true ), // mul div mod OP(4, true ), OP( 4, true ), // + - - OP(6, true ), OP( 6, true ), OP( 6, true ), OP( 6, true ), OP( 6, true ), OP( 6, true ), // == <= >= != < > OP(1, false), // not OP(7, true ), OP( 7, true ), // or and OP(5, false), OP( 5, false ), OP( 5, false ), OP( 5, false ), OP( 5, false ), // ^= *= /= %= += @@ -677,9 +677,6 @@ dc_LEX_to_INST[] = { // starts at XC_LEX_OP_POWER // corresponding XC/DC_L XC_INST_POWER, XC_INST_MULTIPLY, // OP_POWER OP_MULTIPLY XC_INST_DIVIDE, XC_INST_MODULUS, // OP_DIVIDE OP_MODULUS XC_INST_PLUS, XC_INST_MINUS, // OP_PLUS OP_MINUS - DC_INST_INVALID, DC_INST_INVALID, // OP_REL_EQ OP_REL_LE - DC_INST_INVALID, DC_INST_INVALID, // OP_REL_GE OP_REL_NE - DC_INST_INVALID, DC_INST_INVALID, // OP_REL_LT OP_REL_GT XC_INST_BOOL_NOT, // DC_LEX_OP_BOOL_NOT DC_INST_INVALID, // DC_LEX_OP_ASSIGN XC_INST_REL_GT, // DC_LEX_LPAREN @@ -4655,7 +4652,7 @@ static BcStatus bc_parse_expr_empty_ok(BcParse *p, uint8_t flags) bool paren_first, paren_expr, rprn, done, get_token, assign, bin_last; dbg_lex_enter("%s:%d entered", __func__, __LINE__); - paren_first = p->l.t.t == BC_LEX_LPAREN; + paren_first = (p->l.t.t == BC_LEX_LPAREN); nparens = nrelops = 0; paren_expr = rprn = done = get_token = assign = false; bin_last = true; @@ -4671,7 +4668,7 @@ static BcStatus bc_parse_expr_empty_ok(BcParse *p, uint8_t flags) 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; + bin_last = (prev == XC_INST_MINUS); break; case BC_LEX_OP_ASSIGN_POWER: case BC_LEX_OP_ASSIGN_MULTIPLY: @@ -4812,7 +4809,7 @@ static BcStatus bc_parse_expr_empty_ok(BcParse *p, uint8_t flags) while (p->ops.len > ops_bgn) { top = BC_PARSE_TOP_OP(p); - assign = top >= BC_LEX_OP_ASSIGN_POWER && top <= BC_LEX_OP_ASSIGN; + assign = (top >= BC_LEX_OP_ASSIGN_POWER && top <= BC_LEX_OP_ASSIGN); if (top == BC_LEX_LPAREN || top == BC_LEX_RPAREN) return bc_error_bad_expression(); |