32 lines
775 B
Rust
32 lines
775 B
Rust
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use crate::ErrorHandler;
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use super::tokens::Token;
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/// The scanner's state, including the source it is scanning.
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pub struct Scanner {
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source: String,
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tokens: Vec<Token>,
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start: usize,
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current: usize,
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line: usize,
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}
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impl Scanner {
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/// Initialize a scanner by specifying the source code to scan.
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pub fn new(source: String) -> Scanner {
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Scanner{
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source: source,
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tokens: Vec::new(),
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start: 0,
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current: 0,
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line: 1,
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}
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}
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/// Scan the source code, generating the list of tokens and returning it.
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/// The scanner itself is destroyed once the process is complete.
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pub fn scan_tokens(self, err_hdl: &mut ErrorHandler) -> Vec<Token> {
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self.tokens
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}
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}
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