1/*
2** expr.h
3**
4** Ullrich von Bassewitz, 21.06.1998
5*/
6
7
8
9#ifndef EXPR_H
10#define EXPR_H
11
12
13
14/* cc65 */
15#include "datatype.h"
16#include "exprdesc.h"
17
18
19
20/*****************************************************************************/
21/* code */
22/*****************************************************************************/
23
24
25
26void ExprWithCheck (void (*Func) (ExprDesc*), ExprDesc* Expr);
27/* Call an expression function with checks. */
28
29void MarkedExprWithCheck (void (*Func) (ExprDesc*), ExprDesc* Expr);
30/* Call an expression function with checks and record start and end of the
31** generated code.
32*/
33
34void PushAddr (const ExprDesc* Expr);
35/* If the expression contains an address that was somehow evaluated,
36** push this address on the stack. This is a helper function for all
37** sorts of implicit or explicit assignment functions where the lvalue
38** must be saved if it's not constant, before evaluating the rhs.
39*/
40
41void Store (ExprDesc* Expr, const Type* StoreType);
42/* Store the primary register into the location denoted by lval. If StoreType
43** is given, use this type when storing instead of lval->Type. If StoreType
44** is NULL, use lval->Type instead.
45*/
46
47int evalexpr (unsigned flags, void (*Func) (ExprDesc*), ExprDesc* Expr);
48/* Will evaluate an expression via the given function. If the result is a
49** constant, 0 is returned and the value is put in the Expr struct. If the
50** result is not constant, LoadExpr is called to bring the value into the
51** primary register and 1 is returned.
52*/
53
54void Expression0 (ExprDesc* Expr);
55/* Evaluate an expression via hie0 and put the result into the primary register */
56
57void ConstExpr (void (*Func) (ExprDesc*), ExprDesc* Expr);
58/* Will evaluate an expression via the given function. If the result is not
59** a constant of some sort, a diagnostic will be printed, and the value is
60** replaced by a constant one to make sure there are no internal errors that
61** result from this input error.
62*/
63
64void BoolExpr (void (*Func) (ExprDesc*), ExprDesc* Expr);
65/* Will evaluate an expression via the given function. If the result is not
66** something that may be evaluated in a boolean context, a diagnostic will be
67** printed, and the value is replaced by a constant one to make sure there
68** are no internal errors that result from this input error.
69*/
70
71void ConstAbsIntExpr (void (*Func) (ExprDesc*), ExprDesc* Expr);
72/* Will evaluate an expression via the given function. If the result is not
73** a constant numeric integer value, a diagnostic will be printed, and the
74** value is replaced by a constant one to make sure there are no internal
75** errors that result from this input error.
76*/
77
78void hie10 (ExprDesc* lval);
79/* Handle ++, --, !, unary - etc. */
80
81void hie8 (ExprDesc* Expr);
82/* Process + and - binary operators. */
83
84void hie1 (ExprDesc* lval);
85/* Parse first level of expression hierarchy. */
86
87void hie0 (ExprDesc* Expr);
88/* Parse comma operator. */
89
90
91
92/* End of expr.h */
93
94#endif
95