| [2] | 1 | /*
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| 2 | * IOperator.h - Declaration of the IOperator enum type
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| 3 | *
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| 4 | * Part of the assignment of the Compiler Construction course
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| 5 | * LIACS, Leiden University
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| 6 | */
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| 7 |
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| 8 | #ifndef _IOPERATOR_H_
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| 9 | #define _IOPERATOR_H_
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| 10 |
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| 11 | // Operator of an IStatement
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| 12 | // Several conventions are used. First, operators that deal with integers have
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| 13 | // a _I suffix. Operators that deal with reals have a _R suffix. When there is
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| 14 | // no real-type equivalent for a certain operator (e.g., the modulo operator),
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| 15 | // no suffix is added.
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| 16 | // Second, each IOperator has a signature, which is specified between brackets,
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| 17 | // e.g. [1-r] or [12r]. This signature indicates which of the operand1,
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| 18 | // operand2 and result fields have to be filled in. For each (class of)
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| 19 | // IOperators, a more elaborate description about what has to be filled in is
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| 20 | // given below.
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| 21 |
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| 22 | typedef enum __ioperator {
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| 23 | /* Meta */
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| 24 | IOP_UNKNOWN, // [---] (yet) Unknown operation
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| 25 |
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| 26 | /* Subprogram entry
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| 27 | operand1 should refer to the corresponding Symbol_Subprogram object */
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| 28 | IOP_SUBPROG, // [1--] Subprogram
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| 29 |
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| 30 | /* Subprogram return
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| 31 | operand1 should contain the value that has to be returned */
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| 32 | IOP_RETURN, // [---] Procedure return
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| 33 | IOP_RETURN_I, // [1--] Integer function return
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| 34 | IOP_RETURN_R, // [1--] Real function return
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| 35 |
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| 36 | /* Parameter passing (caller side)
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| 37 | operand1 actual parameter value or Symbol object */
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| 38 | IOP_PARAM_I, // [1--] Integer parameter
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| 39 | IOP_PARAM_R, // [1--] Real parameter
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| 40 |
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| 41 | /* Subprogram call
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| 42 | operand1 should refer to the corresponding Symbol object
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| 43 | result receives the result of a function call */
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| 44 | IOP_PROCCALL, // [1--] Procedure call
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| 45 | IOP_FUNCCALL, // [1-r] Function call
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| 46 |
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| 47 | /* Label
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| 48 | operand1 should refer to the corresponding Symbol object */
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| 49 | IOP_LABEL, // [1--] Label
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| 50 |
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| 51 | /* Goto
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| 52 | operand1 should refer to the corresponding Symbol object; note that
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| 53 | the Symbol pointed to should be of type ST_LABEL */
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| 54 | IOP_GOTO, // [1--] Goto a label
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| 55 |
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| 56 | /* Variable assignment (copy value)
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| 57 | operand1 the source operand
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| 58 | result the destination operand (pointer to a Symbol object) */
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| 59 | IOP_ASSIGN_I, // [1-r] Integer assignment
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| 60 | IOP_ASSIGN_R, // [1-r] Real assignment
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| 61 |
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| 62 | /* Branching
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| 63 | operand1 the first source operand
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| 64 | operand2 the second source operand
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| 65 | result should refer to the target Symbol object; note that
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| 66 | the Symbol pointed to must be of type ST_LABEL */
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| 67 | IOP_BEQ_I, // [12r] = operator for integers
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| 68 | IOP_BLT_I, // [12r] < operator for integers
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| 69 | IOP_BGT_I, // [12r] > operator for integers
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| 70 | IOP_BLE_I, // [12r] <= operator for integers
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| 71 | IOP_BGE_I, // [12r] >= operator for integers
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| 72 | IOP_BNE_I, // [12r] <> operator for integers
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| 73 | IOP_BEQ_R, // [12r] = operator for reals
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| 74 | IOP_BLT_R, // [12r] < operator for reals
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| 75 | IOP_BGT_R, // [12r] > operator for reals
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| 76 | IOP_BLE_R, // [12r] <= operator for reals
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| 77 | IOP_BGE_R, // [12r] >= operator for reals
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| 78 | IOP_BNE_R, // [12r] <> operator for reals
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| 79 |
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| 80 | /* Binary arithmetic operators
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| 81 | operand1 the first source operand
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| 82 | operand2 the second source operand
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| 83 | result the destination operand (refers to a Symbol object) */
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| 84 | IOP_ADD_I, // [12r] Integer addition
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| 85 | IOP_ADD_R, // [12r] Real addition
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| 86 | IOP_SUB_I, // [12r] Integer substraction
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| 87 | IOP_SUB_R, // [12r] Real substraction
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| 88 | IOP_MUL_I, // [12r] Integer multiplication
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| 89 | IOP_MUL_R, // [12r] Real multiplication
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| 90 | IOP_DIV_I, // [12r] Integer division
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| 91 | IOP_DIV_R, // [12r] Real division
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| 92 | IOP_MOD, // [12r] Modulo
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| 93 | IOP_AND, // [12r] AND operation
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| 94 | IOP_OR, // [12r] OR operation
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| 95 |
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| 96 | /* Unary arithmetic operators
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| 97 | operand1 the source operand
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| 98 | result the destination operand (refers to a Symbol object) */
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| 99 | IOP_NOT, // [1-r] NOT operation
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| 100 | IOP_UNARY_MINUS_I, // [1-r] Unary integer minus
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| 101 | IOP_UNARY_MINUS_R, // [1-r] Unary real minus
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| 102 |
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| 103 | /* Coercion
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| 104 | operand1 the source operand
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| 105 | result the destination operand (refers to a Symbol object) */
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| 106 | IOP_INT_TO_REAL // [1-r] Int to Real coercion
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| 107 | } IOperator;
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| 108 |
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| 109 |
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| 110 | char *IOperatorToString(IOperator op);
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| 111 |
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| 112 |
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| 113 | #endif
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