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 schemars::JsonSchema;
use serde::Deserialize;
use serde::Serialize;

use crate::lexer::token::Span;
use crate::node::Node;
use crate::parser::ast::Ending;
use crate::parser::ast::Expression;
use crate::parser::ast::Statement;

#[derive(Debug, PartialEq, Eq, Clone, Deserialize, Serialize, JsonSchema)]

pub struct IfStatement {
    pub r#if: Span,              // `if`
    pub left_parenthesis: Span,  // `(`
    pub condition: Expression,   // *expression*
    pub right_parenthesis: Span, // `)`
    pub body: IfStatementBody,   // `{ ... }`
}

impl Node for IfStatement {
    fn children(&mut self) -> Vec<&mut dyn Node> {
        vec![&mut self.condition, &mut self.body]
    }
}

#[derive(Debug, PartialEq, Eq, Clone, Deserialize, Serialize, JsonSchema)]
#[serde(tag = "type", content = "value")]
pub enum IfStatementBody {
    Statement {
        statement: Box<Statement>,       // `*statement*`
        elseifs: Vec<IfStatementElseIf>, // `elseif (*expression*) *statement*`
        r#else: Option<IfStatementElse>, // `else *statement*`
    },
    Block {
        colon: Span,                          // `:`
        statements: Vec<Statement>,           // `*statements*`
        elseifs: Vec<IfStatementElseIfBlock>, // `elseif (*expression*): *statements*`
        r#else: Option<IfStatementElseBlock>, // `else: *statements*`
        endif: Span,                          // `endif`
        ending: Ending,                       // `;` or `?>`
    },
}

impl Node for IfStatementBody {
    fn children(&mut self) -> Vec<&mut dyn Node> {
        match self {
            IfStatementBody::Statement {
                statement,
                elseifs,
                r#else,
            } => {
                let mut children: Vec<&mut dyn Node> = vec![statement.as_mut()];
                children.extend(
                    elseifs
                        .iter_mut()
                        .map(|elseif| elseif as &mut dyn Node)
                        .collect::<Vec<&mut dyn Node>>(),
                );
                if let Some(r#else) = r#else {
                    children.push(r#else as &mut dyn Node);
                }
                children
            }
            IfStatementBody::Block {
                statements,
                elseifs,
                r#else,
                ..
            } => {
                let mut children: Vec<&mut dyn Node> = vec![];
                children.extend(
                    statements
                        .iter_mut()
                        .map(|statement| statement as &mut dyn Node),
                );
                children.extend(elseifs.iter_mut().map(|elseif| elseif as &mut dyn Node));
                if let Some(r#else) = r#else {
                    children.push(r#else as &mut dyn Node);
                }
                children
            }
        }
    }
}

#[derive(Debug, PartialEq, Eq, Clone, Deserialize, Serialize, JsonSchema)]

pub struct IfStatementElseIf {
    pub elseif: Span,              // `elseif`
    pub left_parenthesis: Span,    // `(`
    pub condition: Expression,     // `( *expression* )`
    pub right_parenthesis: Span,   // `)`
    pub statement: Box<Statement>, // `*statement*`
}

impl Node for IfStatementElseIf {
    fn children(&mut self) -> Vec<&mut dyn Node> {
        vec![&mut self.condition, self.statement.as_mut()]
    }
}

#[derive(Debug, PartialEq, Eq, Clone, Deserialize, Serialize, JsonSchema)]

pub struct IfStatementElse {
    pub r#else: Span,              // `else`
    pub statement: Box<Statement>, // `*statement*`
}

impl Node for IfStatementElse {
    fn children(&mut self) -> Vec<&mut dyn Node> {
        vec![self.statement.as_mut()]
    }
}

#[derive(Debug, PartialEq, Eq, Clone, Deserialize, Serialize, JsonSchema)]

pub struct IfStatementElseIfBlock {
    pub elseif: Span,               // `elseif`
    pub left_parenthesis: Span,     // `(`
    pub condition: Expression,      // `( *expression* )`
    pub right_parenthesis: Span,    // `)`
    pub colon: Span,                // `:`
    pub statements: Vec<Statement>, // `*statements*`
}

impl Node for IfStatementElseIfBlock {
    fn children(&mut self) -> Vec<&mut dyn Node> {
        let mut children: Vec<&mut dyn Node> = vec![&mut self.condition];
        children.extend(
            self.statements
                .iter_mut()
                .map(|statement| statement as &mut dyn Node),
        );
        children
    }
}

#[derive(Debug, PartialEq, Eq, Clone, Deserialize, Serialize, JsonSchema)]

pub struct IfStatementElseBlock {
    pub r#else: Span,               // `else`
    pub colon: Span,                // `:`
    pub statements: Vec<Statement>, // `*statements*`
}

impl Node for IfStatementElseBlock {
    fn children(&mut self) -> Vec<&mut dyn Node> {
        self.statements
            .iter_mut()
            .map(|statement| statement as &mut dyn Node)
            .collect()
    }
}