source: liacs/coco/assignment4/IOperator.h@ 144

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