104 lines
1.9 KiB
Rust
104 lines
1.9 KiB
Rust
use std::{
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collections::HashMap,
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io::{Result, Write},
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ops::Range,
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};
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use wasm_ast::node::{BrTable, LabelType};
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#[macro_export]
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macro_rules! indentation {
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($mng:tt, $w:tt) => {{
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let mut iter = 0..$mng.indentation();
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iter.try_for_each(|_| write!($w, "\t"))
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}};
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}
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#[macro_export]
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macro_rules! indented {
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($mng:tt, $w:tt, $($args:tt)*) => {{
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indentation!($mng, $w)?;
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write!($w, $($args)*)
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}};
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}
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#[macro_export]
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macro_rules! line {
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($mng:tt, $w:tt, $($args:tt)*) => {{
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indentation!($mng, $w)?;
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writeln!($w, $($args)*)
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}};
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}
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#[derive(Default)]
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pub struct Manager {
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table_map: HashMap<usize, usize>,
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label_list: Vec<Option<LabelType>>,
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indentation: usize,
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}
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impl Manager {
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pub fn get_table_index(&self, table: &BrTable) -> usize {
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let id = table as *const _ as usize;
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self.table_map[&id]
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}
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pub fn set_table_map(&mut self, map: HashMap<usize, usize>) {
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self.table_map = map;
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}
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pub fn label_list(&self) -> &[Option<LabelType>] {
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&self.label_list
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}
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pub fn push_label(&mut self, label: Option<LabelType>) {
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self.label_list.push(label);
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}
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pub fn pop_label(&mut self) {
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self.label_list.pop().unwrap();
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}
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pub const fn indentation(&self) -> usize {
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self.indentation
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}
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pub fn indent(&mut self) {
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self.indentation += 1;
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}
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pub fn dedent(&mut self) {
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self.indentation -= 1;
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}
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}
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pub trait Driver {
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fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()>;
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}
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pub trait DriverNoContext {
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fn write(&self, w: &mut dyn Write) -> Result<()>;
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}
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pub fn write_separated<I, T, M>(mut iter: I, mut func: M, w: &mut dyn Write) -> Result<()>
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where
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M: FnMut(T, &mut dyn Write) -> Result<()>,
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I: Iterator<Item = T>,
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{
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match iter.next() {
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Some(first) => func(first, w)?,
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None => return Ok(()),
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}
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iter.try_for_each(|v| {
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write!(w, ", ")?;
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func(v, w)
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})
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}
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pub fn write_ascending(prefix: &str, range: Range<usize>, w: &mut dyn Write) -> Result<()> {
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write_separated(range, |i, w| write!(w, "{prefix}_{i}"), w)
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}
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