1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
// SPDX-License-Identifier: MIT
// Copyright (c) 2026 Paul Buetow
package rpn
import (
"fmt"
)
// BooleanOperations provides boolean comparison operator implementations.
type BooleanOperations struct {
}
// NewBooleanOperations creates a new BooleanOperations instance.
func NewBooleanOperations() *BooleanOperations {
return &BooleanOperations{}
}
// GT pops two values from stack, compares (a > b), and pushes a boolean result.
func (o *BooleanOperations) GT(stack *Stack) error {
b, err := stack.Pop()
if err != nil {
return fmt.Errorf("insufficient operands for gt: %w", err)
}
a, err := stack.Pop()
if err != nil {
return fmt.Errorf("insufficient operands for gt: %w", err)
}
aVal, err := a.Float64()
if err != nil {
return fmt.Errorf("failed to get float64 value for a: %w", err)
}
bVal, err := b.Float64()
if err != nil {
return fmt.Errorf("failed to get float64 value for b: %w", err)
}
stack.Push(NewFloatFromBool(aVal > bVal))
return nil
}
// LT pops two values from stack, compares (a < b), and pushes a boolean result.
func (o *BooleanOperations) LT(stack *Stack) error {
b, err := stack.Pop()
if err != nil {
return fmt.Errorf("insufficient operands for lt: %w", err)
}
a, err := stack.Pop()
if err != nil {
return fmt.Errorf("insufficient operands for lt: %w", err)
}
aVal, err := a.Float64()
if err != nil {
return fmt.Errorf("failed to get float64 value for a: %w", err)
}
bVal, err := b.Float64()
if err != nil {
return fmt.Errorf("failed to get float64 value for b: %w", err)
}
stack.Push(NewFloatFromBool(aVal < bVal))
return nil
}
// GTE pops two values from stack, compares (a >= b), and pushes a boolean result.
func (o *BooleanOperations) GTE(stack *Stack) error {
b, err := stack.Pop()
if err != nil {
return fmt.Errorf("insufficient operands for gte: %w", err)
}
a, err := stack.Pop()
if err != nil {
return fmt.Errorf("insufficient operands for gte: %w", err)
}
aVal, err := a.Float64()
if err != nil {
return fmt.Errorf("failed to get float64 value for a: %w", err)
}
bVal, err := b.Float64()
if err != nil {
return fmt.Errorf("failed to get float64 value for b: %w", err)
}
stack.Push(NewFloatFromBool(aVal >= bVal))
return nil
}
// LTE pops two values from stack, compares (a <= b), and pushes a boolean result.
func (o *BooleanOperations) LTE(stack *Stack) error {
b, err := stack.Pop()
if err != nil {
return fmt.Errorf("insufficient operands for lte: %w", err)
}
a, err := stack.Pop()
if err != nil {
return fmt.Errorf("insufficient operands for lte: %w", err)
}
aVal, err := a.Float64()
if err != nil {
return fmt.Errorf("failed to get float64 value for a: %w", err)
}
bVal, err := b.Float64()
if err != nil {
return fmt.Errorf("failed to get float64 value for b: %w", err)
}
stack.Push(NewFloatFromBool(aVal <= bVal))
return nil
}
// EQ pops two values from stack, compares (a == b), and pushes a boolean result.
func (o *BooleanOperations) EQ(stack *Stack) error {
b, err := stack.Pop()
if err != nil {
return fmt.Errorf("insufficient operands for eq: %w", err)
}
a, err := stack.Pop()
if err != nil {
return fmt.Errorf("insufficient operands for eq: %w", err)
}
aVal, err := a.Float64()
if err != nil {
return fmt.Errorf("failed to get float64 value for a: %w", err)
}
bVal, err := b.Float64()
if err != nil {
return fmt.Errorf("failed to get float64 value for b: %w", err)
}
stack.Push(NewFloatFromBool(aVal == bVal))
return nil
}
// NEQ pops two values from stack, compares (a != b), and pushes a boolean result.
func (o *BooleanOperations) NEQ(stack *Stack) error {
b, err := stack.Pop()
if err != nil {
return fmt.Errorf("insufficient operands for neq: %w", err)
}
a, err := stack.Pop()
if err != nil {
return fmt.Errorf("insufficient operands for neq: %w", err)
}
aVal, err := a.Float64()
if err != nil {
return fmt.Errorf("failed to get float64 value for a: %w", err)
}
bVal, err := b.Float64()
if err != nil {
return fmt.Errorf("failed to get float64 value for b: %w", err)
}
stack.Push(NewFloatFromBool(aVal != bVal))
return nil
}
|
