51 lines
934 B
Rust
51 lines
934 B
Rust
const MIN_CHAR: char = ' '; // ASCII code: 32
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#[derive(Clone, Copy, Debug, Eq, PartialEq)]
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pub struct Char {
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value: char,
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pos: Pos,
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}
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#[derive(Clone, Copy, Debug, Eq, PartialEq)]
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pub struct Pos {
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pub index: usize,
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pub line: usize,
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pub col: usize,
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}
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#[derive(Clone, Debug, Default, Eq, PartialEq)]
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pub struct Token {
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pub pos: Pos,
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pub value: String,
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}
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impl Char {
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pub fn new(value: char, pos: Pos) -> Result<Self, char> {
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if value >= MIN_CHAR || value == ' ' || value == '\n' {
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Ok(Self { value, pos })
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} else {
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Err(value)
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}
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}
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pub fn value(&self) -> char {
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self.value
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}
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pub fn pos(&self) -> Pos {
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self.pos
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}
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}
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impl Pos {
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pub fn new(index: usize, line: usize, col: usize) -> Self {
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Self { index, line, col }
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}
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}
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impl Default for Pos {
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fn default() -> Self {
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Self::new(0, 1, 1)
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}
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}
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