diff options
Diffstat (limited to 'whichbas.c')
| -rw-r--r-- | whichbas.c | 24 |
1 files changed, 19 insertions, 5 deletions
@@ -163,6 +163,8 @@ int is_numeric_func(unsigned char tok) { /* return true if a token is an arithmetic operator */ int is_arith_op(unsigned char tok) { switch(tok) { + case OP_UPLUS: /* not sure these two... */ + case OP_UMINUS: /* ...really belong here */ case OP_NUM_LE: case OP_NUM_NE: case OP_NUM_GE: @@ -178,8 +180,6 @@ int is_arith_op(unsigned char tok) { case OP_OR: case OP_AND: case OP_NUM_ASSIGN: - case OP_UPLUS: - case OP_UMINUS: case OP_GRP_LPAR: /* yes, this belongs here, (((A$))) is a syntax error! */ return 1; default: @@ -200,18 +200,32 @@ int is_numeric_var(unsigned char tok) { /* return true if a token is: - a numeric constant (including hex constants), - a numeric variable (including arrays), - - a math operator (plus, minus, etc), - a function that returns a numeric (e.g. ASC(), SIN()). for now, only standard Atari BASIC tokens are considered. + unary minus and plus make sense here, but binary ops don't. */ -int is_numeric_op(unsigned char tok) { +int is_numeric_rval(unsigned char tok) { return + (tok == OP_UMINUS) || + (tok == OP_UPLUS) || is_numconst_op (tok) || - is_arith_op (tok) || is_numeric_func (tok) || is_numeric_var (tok) ; } +/* return true if a token is: + - a numeric constant (including hex constants), + - a numeric variable (including arrays), + - a math operator (plus, minus, etc), + - a function that returns a numeric (e.g. ASC(), SIN()). + for now, only standard Atari BASIC tokens are considered. + */ +int is_numeric_op(unsigned char tok) { + return + is_numeric_rval (tok) || + is_arith_op (tok) ; +} + int is_string_var(unsigned char tok) { return (tok >= 0x80 && (get_vartype(tok) == TYPE_STRING)); } |