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82 lines
1.8 KiB
Rust
82 lines
1.8 KiB
Rust
use std::collections::HashMap;
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#[derive(Debug)]
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pub struct Register {
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name: char,
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values: Vec<String>,
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}
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impl Register {
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pub const fn new(name: char) -> Self {
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Self {
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name,
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values: Vec::new(),
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}
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}
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pub fn new_with_values(name: char, values: Vec<String>) -> Self {
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Self { name, values }
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}
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pub const fn name(&self) -> char {
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self.name
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}
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pub fn read(&self) -> &[String] {
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&self.values
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}
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pub fn write(&mut self, values: Vec<String>) {
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self.values = values;
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}
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pub fn push(&mut self, value: String) {
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self.values.push(value);
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}
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}
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/// Currently just wraps a `HashMap` of `Register`s
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#[derive(Debug, Default)]
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pub struct Registers {
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inner: HashMap<char, Register>,
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}
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impl Registers {
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pub fn get(&self, name: char) -> Option<&Register> {
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self.inner.get(&name)
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}
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pub fn read(&self, name: char) -> Option<&[String]> {
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self.get(name).map(|reg| reg.read())
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}
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pub fn write(&mut self, name: char, values: Vec<String>) {
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if name != '_' {
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self.inner
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.insert(name, Register::new_with_values(name, values));
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}
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}
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pub fn push(&mut self, name: char, value: String) {
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if name != '_' {
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if let Some(r) = self.inner.get_mut(&name) {
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r.push(value);
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} else {
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self.write(name, vec![value]);
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}
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}
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}
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pub fn first(&self, name: char) -> Option<&String> {
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self.read(name).and_then(|entries| entries.first())
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}
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pub fn last(&self, name: char) -> Option<&String> {
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self.read(name).and_then(|entries| entries.last())
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}
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pub fn inner(&self) -> &HashMap<char, Register> {
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&self.inner
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}
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}
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