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
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
|
#include <cstddef>
#include <string>
#include <cmath>
#include "include/lexer.hpp"
#include "include/expressions.hpp"
using std::string, std::to_string;
// Literal o constante.
Literal::Literal(int value) : Expression(NULL, NULL, number) {
this->value = value;
}
Literal::~Literal() {}
void Literal::setRepr() {
repr = to_string(value);
}
int Literal::getValue() {
return value;
}
float Literal::eval(int arg) {
return getValue();
}
// Función.
Function::Function(Expression *arg, trig_functions name) : Expression(NULL, NULL, function) {
this->arg = arg;
function_name = name;
}
Function::~Function() {
delTree();
}
const Expression *Function::getArg() {
return arg;
}
trig_functions Function::getFunctionName() {
return function_name;
}
void Function::delTree() {
delete arg;
}
float Function::eval(int arg) {
float function_arg = this->arg->eval(arg);
switch(function_name) {
case i_sin:
return std::sin(function_arg);
case i_cos:
return std::cos(function_arg);
case i_tan:
return std::tan(function_arg);
case i_csc:
return std::asin(function_arg);
case i_sec:
return std::acos(function_arg);
default: // Cotangente.
return std::atan(function_arg);
}
}
void Function::setRepr() {
switch(function_name) {
case i_sin:
repr += "sin";
break;
case i_cos:
repr += "cos";
break;
case i_tan:
repr += "tan";
break;
case i_csc:
repr += "csc";
break;
case i_sec:
repr += "sec";
break;
case i_ctg:
repr += "ctg";
break;
}
repr += '(';
repr += arg->getRepr();
repr += ')';
}
// Variable.
Variable::Variable(char name) : Expression(NULL, NULL, variable) {
this->name = name;
setRepr();
}
Variable::~Variable() {}
void Variable::setRepr() {
repr = string{name};
}
float Variable::eval(int arg) {
return arg;
}
// Suma.
AddExpression::AddExpression(Expression *left, Expression *right)
: Expression(left, right, sum) {}
AddExpression::~AddExpression() {
delTree();
}
float AddExpression::eval(int arg) {
float right_val = right->eval(arg);
float left_val = left->eval(arg);
return right_val + left_val;
}
// Substracción.
SubExpression::SubExpression(Expression *left, Expression *right)
: Expression(left, right, substraction) {}
SubExpression::~SubExpression() {
delTree();
}
float SubExpression::eval(int arg) {
float right_val = right->eval(arg);
float left_val = left->eval(arg);
return right_val - left_val;
}
// Negación.
NegationExpression::NegationExpression(Expression *right)
: Expression(NULL, right, substraction) {}
NegationExpression::~NegationExpression() {
delTree();
}
void NegationExpression::setRepr() {
repr = "-(";
repr += right->getRepr() + ")";
}
float NegationExpression::eval(int arg) {
float expr_value = right->eval(arg);
return -1 * expr_value;
}
// División.
DivisionExpression::DivisionExpression(Expression *left, Expression *right)
: Expression(left, right, division) {}
DivisionExpression::~DivisionExpression() {
delTree();
}
float DivisionExpression::eval(int arg) {
float right_val = right->eval(arg);
float left_val = left->eval(arg);
return left_val / right_val;
}
// Multiplicación.
MultiplicationExpression::MultiplicationExpression(Expression *left,
Expression *right)
: Expression(left, right, multiplication) {}
MultiplicationExpression::~MultiplicationExpression() {
delTree();
}
float MultiplicationExpression::eval(int arg) {
float right_val = right->eval(arg);
float left_val = left->eval(arg);
return left_val * right_val;
}
// Potencia.
PowerExpression::PowerExpression(Expression *left, Expression *right)
: Expression(left, right, power) {}
PowerExpression::~PowerExpression() {
delTree();
}
float PowerExpression::eval(int arg) {
float right_val = right->eval(arg);
float left_val = left->eval(arg);
return std::pow(left_val, right_val);
}
|
