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

use crate::nodes::{Expression, Identifier, Token};

#[derive(Clone, Debug, PartialEq, Eq)]
pub struct LocalAssignTokens {
    pub local: Token,
    pub equal: Option<Token>,
    pub variable_commas: Vec<Token>,
    pub value_commas: Vec<Token>,
}

#[derive(Clone, Debug, PartialEq, Eq)]
pub struct LocalAssignStatement {
    variables: Vec<Identifier>,
    values: Vec<Expression>,
    tokens: Option<LocalAssignTokens>,
}

impl LocalAssignStatement {
    pub fn new(variables: Vec<Identifier>, values: Vec<Expression>) -> Self {
        Self {
            variables,
            values,
            tokens: None,
        }
    }

    pub fn from_variable<S: Into<Identifier>>(variable: S) -> Self {
        Self {
            variables: vec![variable.into()],
            values: Vec::new(),
            tokens: None,
        }
    }

    pub fn with_tokens(mut self, tokens: LocalAssignTokens) -> Self {
        self.tokens = Some(tokens);
        self
    }

    #[inline]
    pub fn set_tokens(&mut self, tokens: LocalAssignTokens) {
        self.tokens = Some(tokens);
    }

    #[inline]
    pub fn get_tokens(&self) -> Option<&LocalAssignTokens> {
        self.tokens.as_ref()
    }

    pub fn with_variable<S: Into<Identifier>>(mut self, variable: S) -> Self {
        self.variables.push(variable.into());
        self
    }

    pub fn with_value<E: Into<Expression>>(mut self, value: E) -> Self {
        self.values.push(value.into());
        self
    }

    pub fn into_assignments(self) -> (Vec<Identifier>, Vec<Expression>) {
        (self.variables, self.values)
    }

    pub fn append_assignment<S: Into<Identifier>>(&mut self, variable: S, value: Expression) {
        self.variables.push(variable.into());
        self.values.push(value);
    }

    pub fn for_each_assignment<F>(&mut self, mut callback: F)
    where
        F: FnMut(&mut Identifier, Option<&mut Expression>),
    {
        let mut values = self.values.iter_mut();
        self.variables
            .iter_mut()
            .for_each(|variable| callback(variable, values.next()));
    }

    #[inline]
    pub fn get_variables(&self) -> &Vec<Identifier> {
        &self.variables
    }

    #[inline]
    pub fn iter_variables(&self) -> impl Iterator<Item = &Identifier> {
        self.variables.iter()
    }

    #[inline]
    pub fn append_variables(&mut self, variables: &mut Vec<Identifier>) {
        self.variables.append(variables);
    }

    #[inline]
    pub fn get_values(&self) -> &Vec<Expression> {
        &self.values
    }

    #[inline]
    pub fn mutate_values(&mut self) -> &mut Vec<Expression> {
        &mut self.values
    }

    #[inline]
    pub fn extend_values<T: IntoIterator<Item = Expression>>(&mut self, iter: T) {
        self.values.extend(iter);
    }

    #[inline]
    pub fn iter_mut_values(&mut self) -> impl Iterator<Item = &mut Expression> {
        self.values.iter_mut()
    }

    #[inline]
    pub fn iter_values(&self) -> impl Iterator<Item = &Expression> {
        self.values.iter()
    }

    #[inline]
    pub fn append_values(&mut self, values: &mut Vec<Expression>) {
        self.values.append(values);
    }

    #[inline]
    pub fn value_count(&self) -> usize {
        self.values.len()
    }

    #[inline]
    pub fn variable_count(&self) -> usize {
        self.variables.len()
    }

    #[inline]
    pub fn has_values(&self) -> bool {
        !self.values.is_empty()
    }
}