lib-ruby-parser 0.7.0

Ruby parser
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

use crate::maybe_byte::MaybeByte;

#[derive(Clone)]
pub struct LexState {
    value: i32,
}

impl LexState {
    pub(crate) fn is(&self, value: i32) -> bool {
        self.value == value
    }

    pub(crate) fn is_some(&self, states: i32) -> bool {
        (self.value & states) != 0
    }

    pub(crate) fn is_all(&self, states: i32) -> bool {
        (self.value & states) == states
    }

    pub fn set(&mut self, value: i32) {
        self.value = value
    }

    pub(crate) fn get(&self) -> i32 {
        self.value
    }

    pub(crate) fn is_after_operator(&self) -> bool {
        self.is_some(EXPR_FNAME | EXPR_DOT)
    }
    pub(crate) fn is_end(&self) -> bool {
        self.is_some(EXPR_END_ANY)
    }
    pub(crate) fn is_arg(&self) -> bool {
        self.is_some(EXPR_ARG_ANY)
    }
    pub(crate) fn is_label_possible(&self, cmd_state: bool) -> bool {
        (self.is_some(EXPR_LABEL | EXPR_ENDFN) && !cmd_state) || self.is_arg()
    }
    pub(crate) fn is_spacearg(&self, c: &MaybeByte, space_seen: bool) -> bool {
        self.is_arg() && space_seen && !c.is_space()
    }
    pub(crate) fn is_beg(&self) -> bool {
        self.is_some(EXPR_BEG_ANY) || self.is_all(EXPR_ARG | EXPR_LABELED)
    }
}

impl Default for LexState {
    fn default() -> Self {
        Self {
            value: lex_states::EXPR_BEG,
        }
    }
}

pub mod lex_states {
    pub const EXPR_BEG: i32 = 1 << 0;
    pub const EXPR_END: i32 = 1 << 1;
    pub const EXPR_ENDARG: i32 = 1 << 2;
    pub const EXPR_ENDFN: i32 = 1 << 3;
    pub const EXPR_ARG: i32 = 1 << 4;
    pub const EXPR_CMDARG: i32 = 1 << 5;
    pub const EXPR_MID: i32 = 1 << 6;
    pub const EXPR_FNAME: i32 = 1 << 7;
    pub const EXPR_DOT: i32 = 1 << 8;
    pub const EXPR_CLASS: i32 = 1 << 9;
    pub const EXPR_LABEL: i32 = 1 << 10;
    pub const EXPR_LABELED: i32 = 1 << 11;
    pub const EXPR_FITEM: i32 = 1 << 12;
    pub const EXPR_VALUE: i32 = EXPR_BEG;
    pub const EXPR_BEG_ANY: i32 = EXPR_BEG | EXPR_MID | EXPR_CLASS;
    pub const EXPR_ARG_ANY: i32 = EXPR_ARG | EXPR_CMDARG;
    pub const EXPR_END_ANY: i32 = EXPR_END | EXPR_ENDARG | EXPR_ENDFN;
    pub const EXPR_NONE: i32 = 0;
}
use lex_states::*;

impl std::fmt::Debug for LexState {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        let mut states: Vec<&'static str> = vec![];

        if self.is_some(lex_states::EXPR_BEG) {
            states.push("EXPR_BEG")
        }
        if self.is_some(lex_states::EXPR_END) {
            states.push("EXPR_END")
        }
        if self.is_some(lex_states::EXPR_ENDARG) {
            states.push("EXPR_ENDARG")
        }
        if self.is_some(lex_states::EXPR_ENDFN) {
            states.push("EXPR_ENDFN")
        }
        if self.is_some(lex_states::EXPR_ARG) {
            states.push("EXPR_ARG")
        }
        if self.is_some(lex_states::EXPR_CMDARG) {
            states.push("EXPR_CMDARG")
        }
        if self.is_some(lex_states::EXPR_MID) {
            states.push("EXPR_MID")
        }
        if self.is_some(lex_states::EXPR_FNAME) {
            states.push("EXPR_FNAME")
        }
        if self.is_some(lex_states::EXPR_DOT) {
            states.push("EXPR_DOT")
        }
        if self.is_some(lex_states::EXPR_CLASS) {
            states.push("EXPR_CLASS")
        }
        if self.is_some(lex_states::EXPR_LABEL) {
            states.push("EXPR_LABEL")
        }
        if self.is_some(lex_states::EXPR_FITEM) {
            states.push("EXPR_FITEM")
        }
        if self.is_some(lex_states::EXPR_NONE) {
            states.push("EXPR_NONE")
        }

        if self.is_some(lex_states::EXPR_VALUE) {
            states.push("++ EXPR_VALUE ++")
        }
        if self.is_some(lex_states::EXPR_BEG_ANY) {
            states.push("++ EXPR_BEG_ANY ++")
        }
        if self.is_some(lex_states::EXPR_END_ANY) {
            states.push("++ EXPR_END_ANY ++")
        }
        if self.is_some(lex_states::EXPR_END_ANY) {
            states.push("++ EXPR_END_ANY ++")
        }

        f.write_str(&states.join("|"))
    }
}