celsium 0.1.7

A library for building interpreters
Documentation 
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

use crate::BuiltinTypes;

use super::TypeStack;

impl TypeStack{
    pub(super) fn add(&mut self) -> Option<BuiltinTypes> {
        let a = self.stack.pop_back().unwrap();
        let b = self.stack.pop_back().unwrap();
        let result = match a {
            BuiltinTypes::Int =>
                match b {
                    BuiltinTypes::Int => Some(BuiltinTypes::Int),
                    BuiltinTypes::Bool => {
                        return None;
                    }
                    BuiltinTypes::String => Some(BuiltinTypes::String),
                    BuiltinTypes::Object { fields: _ } => {
                        return None;
                    }
                    BuiltinTypes::Float => Some(BuiltinTypes::Float),
                    BuiltinTypes::Array { element_type: _, length:_ } => None,
                }
            BuiltinTypes::Bool => None,
            BuiltinTypes::String =>
                match b {
                    BuiltinTypes::Int => Some(BuiltinTypes::String),
                    BuiltinTypes::Bool => {
                        return None;
                    }
                    BuiltinTypes::String => Some(BuiltinTypes::String),
                    BuiltinTypes::Object { fields: _ } => {
                        return None;
                    }
                    BuiltinTypes::Float => Some(BuiltinTypes::String),
                    BuiltinTypes::Array { element_type: _,length:_ } => None,
                }
            BuiltinTypes::Object { fields: _ } => None,
            BuiltinTypes::Float =>
                match b {
                    BuiltinTypes::Int => Some(BuiltinTypes::Float),
                    BuiltinTypes::Bool => {
                        return None;
                    }
                    BuiltinTypes::String => Some(BuiltinTypes::String),
                    BuiltinTypes::Object { fields: _ } => {
                        return None;
                    }
                    BuiltinTypes::Float => Some(BuiltinTypes::Float),
                    BuiltinTypes::Array { element_type: _,length:_ } => None,
                }
            BuiltinTypes::Array { element_type: _,length:_ } => None,
        };
        return result;
    }
    pub(super)fn subtract(&mut self) -> Option<BuiltinTypes> {
        let a = self.stack.pop_back().unwrap();
        let b = self.stack.pop_back().unwrap();
        let result = match a {
            BuiltinTypes::Int =>
                match b {
                    BuiltinTypes::Int => Some(BuiltinTypes::Int),
                    BuiltinTypes::Bool => {
                        return None;
                    }
                    BuiltinTypes::String => {
                        return None;
                    }
                    BuiltinTypes::Object { fields: _ } => {
                        return None;
                    }
                    BuiltinTypes::Float => Some(BuiltinTypes::Float),
                    BuiltinTypes::Array { element_type: _,length:_ } => None,
                }
            BuiltinTypes::Bool => None,
            BuiltinTypes::String => None,
            BuiltinTypes::Object { fields: _ } => None,
            BuiltinTypes::Array { element_type: _,length:_ } => None,

            BuiltinTypes::Float =>
                match b {
                    BuiltinTypes::Int => Some(BuiltinTypes::Float),
                    BuiltinTypes::Bool => {
                        return None;
                    }
                    BuiltinTypes::String => {
                        return None;
                    }
                    BuiltinTypes::Object { fields: _ } => {
                        return None;
                    }
                    BuiltinTypes::Float => Some(BuiltinTypes::Float),
                    BuiltinTypes::Array { element_type: _,length:_ } => None,
                }
        };
        return result;
    }
    pub(super)fn compare(&mut self) -> Option<BuiltinTypes> {
        let a = self.stack.pop_back().unwrap();
        let b = self.stack.pop_back().unwrap();
        let result = match a {
            BuiltinTypes::Int =>
                match b {
                    BuiltinTypes::Int => Some(BuiltinTypes::Bool),
                    BuiltinTypes::Bool => {
                        return None;
                    }
                    BuiltinTypes::String => {
                        return None;
                    }
                    BuiltinTypes::Object { fields: _ } => {
                        return None;
                    }
                    BuiltinTypes::Float => Some(BuiltinTypes::Bool),
                    BuiltinTypes::Array { element_type: _,length:_ } => None,
                }
            BuiltinTypes::Bool =>
                match b {
                    BuiltinTypes::Int => {
                        return None;
                    }
                    BuiltinTypes::Bool => Some(BuiltinTypes::Bool),
                    BuiltinTypes::String => {
                        return None;
                    }
                    BuiltinTypes::Object { fields: _ } => {
                        return None;
                    }
                    BuiltinTypes::Float => {
                        return None;
                    }
                    BuiltinTypes::Array { element_type: _,length:_ } => None,
                }
            BuiltinTypes::String => None,
            BuiltinTypes::Object { fields: _ } => None,
            BuiltinTypes::Float =>
                match b {
                    BuiltinTypes::Int => Some(BuiltinTypes::Bool),
                    BuiltinTypes::Bool => {
                        return None;
                    }
                    BuiltinTypes::String => {
                        return None;
                    }
                    BuiltinTypes::Object { fields: _ } => {
                        return None;
                    }
                    BuiltinTypes::Float => Some(BuiltinTypes::Bool),
                    BuiltinTypes::Array { element_type: _,length:_ } => None,
                }
            BuiltinTypes::Array { element_type: _,length:_ } => None,
        };
        return result;
    }
}