tengwar 1.1.0

Transliterate text into J.R.R. Tolkien's Tengwar.
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

pub mod file;

use std::collections::HashMap;
use crate::characters::*;
use super::*;
use file::*;


/// A runtime-defined mode of the Tengwar.
#[derive(Clone, Debug)]
pub struct CustomMode {
    pub chunks: usize,
    pub vowels_first: bool,

    pub checks_mod: Vec<Check>,
    pub checks_new: Vec<Check>,

    pub consonants: HashMap<Vec<char>, GlyphSpec>,
    pub vowels: HashMap<Vec<char>, TehtaSpec>,

    current: Option<Glyph>,
    previous: Option<Glyph>,
}

impl CustomMode {
    pub fn get_consonant(&self, chunk: &[char]) -> Option<Glyph> {
        let new: &GlyphSpec = self.consonants.get(chunk)?;
        Some(Glyph::from(*new))
    }

    pub fn get_diphthong(&self, _chunk: &[char]) -> Option<Glyph> {
        todo!()
    }

    pub fn get_vowel(&self, chunk: &[char]) -> Option<Glyph> {
        let new: &TehtaSpec = self.vowels.get(chunk)?;
        Some(Glyph::from(GlyphSpec::from(*new)))
    }
}

impl TengwarMode for CustomMode {
    fn finish_current(&mut self) -> Option<Token> {
        self.previous = self.current.take();
        self.previous.map(Token::Glyph)
    }

    fn process(&mut self, chunk: &[char]) -> ParseAction {
        macro_rules! _finish {
            ($glyph:expr) => {finish!($glyph, 0)};
            ($glyph:expr, $len:expr) => {{
                let glyph = $glyph;

                self.current = None;
                self.previous = Some(glyph);

                ParseAction::MatchedToken {
                    token: Token::Glyph(glyph),
                    len: $len,
                }
            }};
        }

        let _initial: bool = self.previous.is_none();

        if let [ESC, ESC_NOP, ..] = chunk {
            self.previous = None;
            ParseAction::matched_opt(self.current.take().map(Token::Glyph), 2)
        } else if let [ESC, _, ..] = chunk {
            ParseAction::ESC_BACKSLASH
        } else if let Some(_current) = &mut self.current {
            //  A glyph is currently being constructed. Try to continue it.
            for check in &self.checks_mod {
                match check {
                    Check::Consonant => todo!(),
                    Check::Diphthong => todo!(),
                    Check::Vowel => {
                        if let Some(new) = self.get_vowel(chunk) {
                            self.current.as_mut().unwrap().integrate_vowel(new);
                            return ParseAction::MatchedPart(chunk.len());
                        }
                    }

                    Check::Rince => todo!(),
                    Check::Labial => todo!(),
                    Check::Nasal => todo!(),
                    Check::Palatal => todo!(),

                    Check::Replacements => todo!(),
                }
            }

            ParseAction::MatchedNone
        } else {
            //  Try to find a new glyph.
            for check in &self.checks_new {
                match check {
                    Check::Consonant => {
                        if let Some(new) = self.get_consonant(chunk) {
                            self.current = Some(new);
                            return ParseAction::MatchedPart(chunk.len());
                        }
                    }
                    Check::Diphthong => todo!(),
                    Check::Vowel => todo!(),

                    Check::Rince => todo!(),
                    Check::Labial => todo!(),
                    Check::Nasal => todo!(),
                    Check::Palatal => todo!(),

                    Check::Replacements => todo!(),
                }
            }

            ParseAction::MatchedNone
        }
    }
}