src/expr-impl.h

   1 /* vim: set sw=8: -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 #ifndef _GNM_EXPR_IMPL_H_
   3 # define _GNM_EXPR_IMPL_H_
   4
   5 #include "gnumeric.h"
   6 #include "numbers.h"
   7 #include "parse-util.h"
   8
   9
  10 G_BEGIN_DECLS
  11
  12 struct _GnmExprConstant {
  13         guint8 oper;
  14         GnmValue const *value;
  15 };
  16
  17 struct _GnmExprFunction {
  18         guint8 oper;
  19         int argc;
  20         GnmFunc *func;
  21         GnmExprConstPtr *argv;
  22 };
  23
  24 struct _GnmExprUnary {
  25         guint8 oper;
  26         GnmExpr const *value;
  27 };
  28
  29 struct _GnmExprBinary {
  30         guint8 oper;
  31         GnmExpr const *value_a;
  32         GnmExpr const *value_b;
  33 };
  34
  35 /* We could break this out into multiple types to be more space efficient */
  36 struct _GnmExprName {
  37         guint8 oper;
  38         Sheet *optional_scope;
  39         Workbook *optional_wb_scope;
  40         GnmNamedExpr *name;
  41 };
  42
  43 struct _GnmExprCellRef {
  44         guint8 oper;
  45         GnmCellRef ref;
  46 };
  47
  48 struct _GnmExprArrayCorner {
  49         guint8 oper;
  50         guint32 cols, rows;
  51         GnmValue *value;        /* Last array result */
  52         GnmExpr const *expr;    /* Real Expression */
  53 };
  54 struct _GnmExprArrayElem {
  55         guint8 oper;
  56         guint32 x, y;
  57 };
  58
  59 struct _GnmExprSet {
  60         guint8 oper;
  61         int argc;
  62         GnmExprConstPtr *argv;
  63 };
  64
  65 union _GnmExpr {
  66         GnmExprConstant         constant;
  67         GnmExprFunction         func;
  68         GnmExprUnary            unary;
  69         GnmExprBinary           binary;
  70         GnmExprName             name;
  71         GnmExprCellRef          cellref;
  72         GnmExprArrayCorner      array_corner;
  73         GnmExprArrayElem        array_elem;
  74         GnmExprSet              set;
  75 };
  76
  77 #define GNM_EXPR_GET_OPER(e_) (0 ? (e_) == (GnmExpr const *)0 : (GnmExprOp)*(guint8*)(e_))
  78
  79 #define gnm_expr_constant_init(expr, val)       \
  80 do {                                            \
  81         (expr)->oper = GNM_EXPR_OP_CONSTANT;    \
  82         (expr)->value = val;                    \
  83 } while (0)
  84
  85
  86 struct _GnmExprSharer {
  87         GHashTable *exprs;
  88
  89         int nodes_in, nodes_stored, nodes_killed;
  90         unsigned ref_count;
  91 };
  92
  93
  94 G_END_DECLS
  95
  96 #endif /* _GNM_EXPR_IMPL_H_ */