Michael Schimmel
ff1024ee49
The `is_tail` field on the `BoundKind::Call` node was an intermediate representation for tail-call optimization and is no longer needed as a distinct field. The TCO pass now embeds this information directly into the `RuntimeMetadata` of the `ExecNode`, which is the VM's internal AST. This simplifies the `BoundKind::Call` structure and removes redundant information.
86 lines
2.8 KiB
Rust
86 lines
2.8 KiB
Rust
use std::collections::HashMap;
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use crate::ast::compiler::bound_nodes::{BoundKind, Address, BoundNode};
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/// A pass that collects all global function definitions (lambdas) into a registry.
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/// This allows the Specializer to retrieve the original AST of a function for monomorphization.
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pub struct LambdaCollector<'a> {
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registry: &'a mut HashMap<u32, BoundNode>,
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}
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impl<'a> LambdaCollector<'a> {
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/// Performs a full traversal of the AST and populates the provided registry.
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pub fn collect(node: &BoundNode, registry: &'a mut HashMap<u32, BoundNode>) {
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let mut collector = Self { registry };
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collector.visit(node);
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}
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fn visit(&mut self, node: &BoundNode) {
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match &node.kind {
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BoundKind::Block { exprs } => {
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for expr in exprs {
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self.visit(expr);
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}
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}
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BoundKind::DefGlobal { global_index, value, .. } => {
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// Register the full Lambda node as the template.
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if let BoundKind::Lambda { .. } = &value.kind {
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self.registry.insert(*global_index, (**value).clone());
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}
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self.visit(value);
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}
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BoundKind::Set { addr, value } => {
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// Also track assignments to globals if they hold lambdas.
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if let Address::Global(global_index) = addr
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&& let BoundKind::Lambda { .. } = &value.kind
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{
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self.registry.insert(*global_index, (**value).clone());
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}
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self.visit(value);
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}
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BoundKind::If { cond, then_br, else_br } => {
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self.visit(cond);
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self.visit(then_br);
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if let Some(e) = else_br {
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self.visit(e);
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}
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}
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BoundKind::Lambda { params, body, .. } => {
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self.visit(params);
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self.visit(body);
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}
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BoundKind::DefLocal { value, .. } => {
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self.visit(value);
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}
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BoundKind::Call { callee, args } => {
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self.visit(callee);
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self.visit(args);
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}
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BoundKind::Tuple { elements } => {
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for el in elements {
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self.visit(el);
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}
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}
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BoundKind::Record { fields } => {
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for (k, v) in fields {
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self.visit(k);
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self.visit(v);
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}
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}
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BoundKind::Expansion { bound_expanded, .. } => {
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self.visit(bound_expanded);
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}
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_ => {} // Leaf nodes
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}
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}
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}
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