maid-lang 1.1.0

Maid Programming Language
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

use std::{cell::RefCell, rc::Rc};

use crate::{
    errors::standard_error::StandardError,
    interpreting::context::Context,
    lexing::position::Position,
    values::{
        built_in_function::BuiltInFunction, function::Function, list::List, number::Number,
        string::Str,
    },
};

#[derive(Debug, Clone)]
pub enum Value {
    NumberValue(Number),
    ListValue(List),
    StringValue(Str),
    FunctionValue(Function),
    BuiltInFunction(BuiltInFunction),
}

impl Value {
    pub fn position_start(&self) -> Option<Position> {
        match self {
            Value::NumberValue(value) => value.pos_start.clone(),
            Value::ListValue(value) => value.pos_start.clone(),
            Value::StringValue(value) => value.pos_start.clone(),
            Value::FunctionValue(value) => value.pos_start.clone(),
            Value::BuiltInFunction(value) => value.pos_start.clone(),
        }
    }

    pub fn position_end(&self) -> Option<Position> {
        match self {
            Value::NumberValue(value) => value.pos_end.clone(),
            Value::ListValue(value) => value.pos_end.clone(),
            Value::StringValue(value) => value.pos_end.clone(),
            Value::FunctionValue(value) => value.pos_end.clone(),
            Value::BuiltInFunction(value) => value.pos_end.clone(),
        }
    }

    pub fn set_position(
        &mut self,
        pos_start: Option<Position>,
        pos_end: Option<Position>,
    ) -> Value {
        match self {
            Value::NumberValue(value) => {
                value.pos_start = pos_start;
                value.pos_end = pos_end;
            }
            Value::ListValue(value) => {
                value.pos_start = pos_start;
                value.pos_end = pos_end;
            }
            Value::StringValue(value) => {
                value.pos_start = pos_start;
                value.pos_end = pos_end;
            }
            Value::FunctionValue(value) => {
                value.pos_start = pos_start;
                value.pos_end = pos_end;
            }
            Value::BuiltInFunction(value) => {
                value.pos_start = pos_start;
                value.pos_end = pos_end;
            }
        }

        self.clone()
    }

    pub fn set_context(&mut self, context: Option<Rc<RefCell<Context>>>) -> Value {
        match self {
            Value::NumberValue(value) => value.context = context,
            Value::ListValue(value) => value.context = context,
            Value::StringValue(value) => value.context = context,
            Value::FunctionValue(value) => value.context = context,
            Value::BuiltInFunction(value) => value.context = context,
        }

        self.clone()
    }

    pub fn perform_operation(
        &mut self,
        operator: &str,
        other: Value,
    ) -> Result<Value, StandardError> {
        match self {
            Value::NumberValue(value) => value.perform_operation(operator, other),
            Value::ListValue(value) => value.to_owned().perform_operation(operator, other),
            Value::StringValue(value) => value.perform_operation(operator, other),
            _ => Err(StandardError::new(
                format!("type doesn't support the '{operator}' operator").as_str(),
                self.position_start().unwrap(),
                self.position_end().unwrap(),
                None,
            )),
        }
    }

    pub fn object_type(&self) -> &str {
        match self {
            Value::NumberValue(_) => "number",
            Value::ListValue(_) => "list",
            Value::StringValue(_) => "string",
            Value::FunctionValue(_) => "function",
            Value::BuiltInFunction(_) => "built-in-function",
            _ => "null",
        }
    }

    pub fn is_true(&self) -> bool {
        match self {
            Value::NumberValue(value) => value.value != 0.0,
            Value::ListValue(value) => value.elements.is_empty(),
            Value::StringValue(value) => value.value.is_empty(),
            Value::FunctionValue(value) => value.name.is_empty(),
            Value::BuiltInFunction(value) => value.name.is_empty(),
            _ => false,
        }
    }

    pub fn as_string(&self) -> String {
        match self {
            Value::NumberValue(value) => value.as_string(),
            Value::ListValue(value) => value.as_string(),
            Value::StringValue(value) => value.as_string(),
            Value::FunctionValue(value) => value.as_string(),
            Value::BuiltInFunction(value) => value.as_string(),
            _ => "".to_string(),
        }
    }
}