diff options
Diffstat (limited to 'engines/tony/mpal/expr.h')
| -rw-r--r-- | engines/tony/mpal/expr.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/engines/tony/mpal/expr.h b/engines/tony/mpal/expr.h index 9036099993..405624b4fe 100644 --- a/engines/tony/mpal/expr.h +++ b/engines/tony/mpal/expr.h @@ -35,6 +35,67 @@ namespace Tony { namespace MPAL { +/** + * @defgroup Mathamatical operations + */ +//@{ + +#define OP_MUL ((1 << 4) | 0) +#define OP_DIV ((1 << 4) | 1) +#define OP_MODULE ((1 << 4) | 2) +#define OP_ADD ((2 << 4) | 0) +#define OP_SUB ((2 << 4) | 1) +#define OP_SHL ((3 << 4) | 0) +#define OP_SHR ((3 << 4) | 1) +#define OP_MINOR ((4 << 4) | 0) +#define OP_MAJOR ((4 << 4) | 1) +#define OP_MINEQ ((4 << 4) | 2) +#define OP_MAJEQ ((4 << 4) | 3) +#define OP_EQUAL ((5 << 4) | 0) +#define OP_NOEQUAL ((5 << 4) | 1) +#define OP_BITAND ((6 << 4) | 0) +#define OP_BITXOR ((7 << 4) | 0) +#define OP_BITOR ((8 << 4) | 0) +#define OP_AND ((9 << 4) | 0) +#define OP_OR ((10 << 4) | 0) + +//@} + +/** + * @defgroup Structures + */ + +//@{ +/** + * Mathamatical framework to manage operations + */ +typedef struct { + byte _type; // Object Type (see enum ExprListTypes) + + union { + int _num; // Identifier (if type == ELT_NUMBER) + char *_name; // Variable name (if type == ELT_VAR) + MpalHandle _son; // Handle expressions (if type == ELT_PARENTH) + byte *_pson; // Handle lockato (if type == ELT_PARENTH2) + } _val; + + byte _symbol; // Mathematic symbols (see #define OP_*) + +} Expression; +typedef Expression *LpExpression; + +//@} + +/** + * Object types that can be contained in an EXPRESSION structure + */ +enum ExprListTypes { + ELT_NUMBER = 1, + ELT_VAR = 2, + ELT_PARENTH = 3, + ELT_PARENTH2 = 4 +}; + /****************************************************************************\ * Function Prototypes \****************************************************************************/ |