mirror of
https://github.com/HigherOrderCO/Bend.git
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Finish initial version of hvm-lang to hvm-core compilation
This commit is contained in:
parent
9f1ef68ea3
commit
7731d2487c
29
Cargo.lock
generated
29
Cargo.lock
generated
@ -161,6 +161,12 @@ version = "1.0.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "acbf1af155f9b9ef647e42cdc158db4b64a1b61f743629225fde6f3e0be2a7c7"
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[[package]]
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name = "diff"
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version = "0.1.13"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "56254986775e3233ffa9c4d7d3faaf6d36a2c09d30b20687e9f88bc8bafc16c8"
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[[package]]
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name = "either"
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version = "1.9.0"
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@ -196,7 +202,9 @@ dependencies = [
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"ariadne",
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"chumsky",
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"clap",
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"itertools 0.11.0",
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"logos",
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"pretty_assertions",
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"shrinkwraprs",
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]
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@ -209,6 +217,15 @@ dependencies = [
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"either",
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]
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[[package]]
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name = "itertools"
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version = "0.11.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "b1c173a5686ce8bfa551b3563d0c2170bf24ca44da99c7ca4bfdab5418c3fe57"
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dependencies = [
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"either",
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]
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[[package]]
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name = "libc"
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version = "0.2.147"
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@ -253,6 +270,16 @@ version = "1.18.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "dd8b5dd2ae5ed71462c540258bedcb51965123ad7e7ccf4b9a8cafaa4a63576d"
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[[package]]
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name = "pretty_assertions"
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version = "1.4.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "af7cee1a6c8a5b9208b3cb1061f10c0cb689087b3d8ce85fb9d2dd7a29b6ba66"
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dependencies = [
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"diff",
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"yansi",
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]
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[[package]]
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name = "proc-macro2"
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version = "1.0.66"
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@ -293,7 +320,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e63e6744142336dfb606fe2b068afa2e1cca1ee6a5d8377277a92945d81fa331"
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dependencies = [
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"bitflags",
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"itertools",
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"itertools 0.8.2",
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"proc-macro2",
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"quote",
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"syn 1.0.109",
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@ -8,5 +8,9 @@ anyhow = "1.0.72"
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ariadne = "0.3.0"
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chumsky = "1.0.0-alpha.4"
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clap = { version = "4.4.1", features = ["derive"] }
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itertools = "0.11.0"
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logos = "0.13.0"
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shrinkwraprs = "0.3.0"
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[dev-dependencies]
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pretty_assertions = "1.4.0"
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@ -1,6 +1,7 @@
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use super::DefId;
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use itertools::Itertools;
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use std::{collections::HashMap, fmt};
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use super::DefId;
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pub struct Book {
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pub defs: HashMap<DefId, LNet>,
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}
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@ -9,8 +10,8 @@ pub struct Book {
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#[derive(Debug)]
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pub struct LNet {
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root: LTree,
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acts: LActs,
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pub root: LTree,
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pub acts: LActs,
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}
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#[derive(Debug)]
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@ -83,10 +84,10 @@ pub fn u32_to_name(num: u32) -> String {
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impl fmt::Display for LNet {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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writeln!(f, " $ {}", self.root)?;
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write!(f, "$ {}", self.root)?;
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for (a, b) in &self.acts {
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writeln!(f, " & {}", a)?;
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writeln!(f, " ~ {}", b)?;
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write!(f, "\n& {}", a)?;
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write!(f, "\n~ {}", b)?;
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}
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Ok(())
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}
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@ -108,24 +109,23 @@ impl fmt::Display for Book {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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for (id, net) in &self.defs {
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writeln!(f, "{} =", u32_to_name(**id))?;
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writeln!(f, "{}\n", net)?;
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writeln!(f, "{}\n", net.to_string().split('\n').map(|x| format!(" {x}")).join("\n"))?;
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}
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Ok(())
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}
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}
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pub type Tag = u8;
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pub type Val = u32;
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pub const NIL: Tag = 0x0; // empty node
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pub const REF: Tag = 0x1; // reference to a definition (closed net)
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pub const NUM: Tag = 0x2; // unboxed number
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pub const ERA: Tag = 0x3; // unboxed eraser
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pub const VRR: Tag = 0x4; // variable pointing to root
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pub const VR1: Tag = 0x5; // variable pointing to aux1 port of node
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pub const VR2: Tag = 0x6; // variable pointing to aux2 port of node
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pub const RDT: Tag = 0x7; // redirection to root
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pub const RD1: Tag = 0x8; // redirection to aux1 port of node
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pub const RD2: Tag = 0x9; // redirection to aux2 port of node
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// Not used in hvm-core AST
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// pub const NIL: Tag = 0x0; // empty node
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// pub const REF: Tag = 0x1; // reference to a definition (closed net)
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// pub const NUM: Tag = 0x2; // unboxed number
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// pub const ERA: Tag = 0x3; // unboxed eraser
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// pub const VRR: Tag = 0x4; // variable pointing to root
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// pub const VR1: Tag = 0x5; // variable pointing to aux1 port of node
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// pub const VR2: Tag = 0x6; // variable pointing to aux2 port of node
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// pub const RDT: Tag = 0x7; // redirection to root
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// pub const RD1: Tag = 0x8; // redirection to aux1 port of node
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// pub const RD2: Tag = 0x9; // redirection to aux2 port of node
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pub const CON: Tag = 0xA; // points to main port of con node
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pub const DUP: Tag = 0xB; // points to main port of dup node; higher labels also dups
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@ -21,9 +21,9 @@ pub struct Rule {
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#[derive(Debug, Clone)]
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pub enum Pattern {
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Ctr(Name, Vec<Pattern>),
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Num(Number),
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Var(Name),
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_Ctr(Name, Vec<Pattern>),
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_Num(Number),
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_Var(Name),
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}
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#[derive(Debug, Clone)]
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4
src/lib.rs
Normal file
4
src/lib.rs
Normal file
@ -0,0 +1,4 @@
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pub mod ast;
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pub mod loader;
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pub mod parser;
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pub mod to_core;
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@ -1,10 +1,10 @@
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use clap::Parser;
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use std::path::PathBuf;
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mod ast;
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mod loader;
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mod parser;
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mod to_core;
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pub mod ast;
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pub mod loader;
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pub mod parser;
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pub mod to_core;
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#[derive(Parser, Debug)]
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#[command(author, version, about, long_about = None)]
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@ -1,4 +1,4 @@
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mod lexer;
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mod parser;
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pub use parser::parse_definition_book;
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pub use parser::{parse_definition_book, parse_term};
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@ -14,15 +14,6 @@ use chumsky::{
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};
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use logos::Logos;
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pub fn parse_definition_book(code: &str) -> Result<DefinitionBook, Vec<Rich<Token>>> {
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let token_iter = Token::lexer(code).spanned().map(|(token, span)| match token {
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Ok(t) => (t, SimpleSpan::from(span)),
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Err(e) => (Token::Error(e), SimpleSpan::from(span)),
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});
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let token_stream = Stream::from_iter(token_iter).spanned(SimpleSpan::from(code.len() .. code.len()));
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book_parser().parse(token_stream).into_result()
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}
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// TODO: Pattern matching on rules
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// TODO: Other types of numbers
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/// <Name> ::= <name_token> // [_a-zA-Z][_a-zA-Z0-9]*
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@ -39,8 +30,28 @@ pub fn parse_definition_book(code: &str) -> Result<DefinitionBook, Vec<Rich<Toke
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/// <Rule> ::= "(" <Name> ")" "=" <newline_token>* <Term> <newline_token>*
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/// <Def> ::= (<Rule> <NewLine>)+
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/// <Book> ::= <Def>+
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pub fn parse_definition_book(code: &str) -> Result<DefinitionBook, Vec<Rich<Token>>> {
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let token_iter = Token::lexer(code).spanned().map(|(token, span)| match token {
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Ok(t) => (t, SimpleSpan::from(span)),
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Err(e) => (Token::Error(e), SimpleSpan::from(span)),
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});
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let token_stream = Stream::from_iter(token_iter).spanned(SimpleSpan::from(code.len() .. code.len()));
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book_parser().parse(token_stream).into_result()
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}
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fn rule_parser<'a, I>() -> impl Parser<'a, I, Rule, extra::Err<Rich<'a, Token>>>
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pub fn parse_term(code: &str) -> Result<Term, Vec<Rich<Token>>> {
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// TODO: Make a function that calls a parser. I couldn't figure out how to type it correctly.
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let token_iter = Token::lexer(code).spanned().map(|(token, span)| match token {
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Ok(t) => (t, SimpleSpan::from(span)),
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Err(e) => (Token::Error(e), SimpleSpan::from(span)),
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});
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let token_stream = Stream::from_iter(token_iter).spanned(SimpleSpan::from(code.len() .. code.len()));
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term_parser().parse(token_stream).into_result()
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}
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// Parsers
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fn term_parser<'a, I>() -> impl Parser<'a, I, Term, extra::Err<Rich<'a, Token>>>
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where
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I: ValueInput<'a, Token = Token, Span = SimpleSpan>,
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{
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@ -69,7 +80,7 @@ where
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let var = name.map(|name| Term::Var { nam: name });
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let term = recursive(|term| {
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recursive(|term| {
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let nested = term
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.clone()
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.delimited_by(just(Token::LParen).then(new_line.clone()), just(Token::RParen).then(new_line.clone()));
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@ -112,13 +123,21 @@ where
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});
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choice((lam, app, dup, let_, num_op, item))
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});
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})
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}
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fn rule_parser<'a, I>() -> impl Parser<'a, I, Rule, extra::Err<Rich<'a, Token>>>
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where
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I: ValueInput<'a, Token = Token, Span = SimpleSpan>,
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{
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let name = select!(Token::Name(name) => Name(name.to_string()));
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let new_line = just(Token::NewLine).repeated();
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just(Token::LParen)
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.ignore_then(name)
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.then_ignore(just(Token::RParen))
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.then_ignore(just(Token::Equals))
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.then(term.delimited_by(new_line.clone(), new_line.clone()))
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.then(term_parser().delimited_by(new_line.clone(), new_line.clone()))
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.map(|(name, body)| Rule { name, pats: vec![], body })
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}
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@ -1,6 +1,10 @@
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use std::collections::HashMap;
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use crate::ast::{DefId, Name, Term};
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use crate::ast::{
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self,
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core::{LNet, LTree},
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DefId, Name, Term,
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};
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#[derive(Clone, Debug)]
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/// Net representation used only as an intermediate for converting to hvm-core format
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@ -209,3 +213,128 @@ fn encode_term(
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}
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}
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}
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pub fn compat_net_to_core(inet: &INet) -> anyhow::Result<LNet> {
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let tree_roots = get_tree_roots(inet);
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let mut port_to_var_id: HashMap<Port, VarId> = HashMap::new();
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let root = compat_tree_to_hvm_tree(inet, tree_roots[1], &mut port_to_var_id);
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let mut acts = vec![];
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for active_pair in tree_roots[2 ..].chunks_exact(2) {
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let act1 = compat_tree_to_hvm_tree(inet, active_pair[0], &mut port_to_var_id);
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let act2 = compat_tree_to_hvm_tree(inet, active_pair[1], &mut port_to_var_id);
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acts.push((act1, act2));
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}
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Ok(LNet { root, acts })
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}
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type TreeId = NodeId;
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type VarId = u32;
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/// Returns a list of all the tree node roots in the compat inet.
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fn get_tree_roots(inet: &INet) -> Vec<NodeId> {
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let mut node_to_tree_id: Vec<Option<TreeId>> = vec![None; inet.nodes.len() / 4];
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let mut tree_roots: Vec<NodeId> = vec![addr(ROOT), addr(enter(inet, ROOT))];
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let mut side_links: Vec<Port> = vec![]; // Links between trees
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// Start by mapping the root tree
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go_down_tree(inet, tree_roots[1], 0, &mut node_to_tree_id, &mut side_links);
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// Check each side-link for a possible new tree pair;
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while let Some(dest_port) = side_links.pop() {
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let dest_node = addr(dest_port);
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// Only go up unmarked trees
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if node_to_tree_id[dest_node as usize].is_none() {
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let (new_tree1, new_tree2) = go_up_tree(inet, dest_node);
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go_down_tree(inet, new_tree1, tree_roots.len() as TreeId, &mut node_to_tree_id, &mut side_links);
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tree_roots.push(new_tree1);
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go_down_tree(inet, new_tree2, tree_roots.len() as TreeId, &mut node_to_tree_id, &mut side_links);
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tree_roots.push(new_tree2);
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}
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}
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tree_roots
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}
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/// Go down a node tree, marking all nodes with the tree_id and storing any side_links found.
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fn go_down_tree(
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inet: &INet,
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root: NodeId,
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tree_id: TreeId,
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node_to_tree_id: &mut [Option<NodeId>],
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side_links: &mut Vec<Port>,
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) {
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let mut nodes_to_check = vec![root];
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while let Some(node) = nodes_to_check.pop() {
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node_to_tree_id[node as usize] = Some(tree_id);
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for down_slot in [1, 2] {
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let down_port = enter(inet, port(node, down_slot));
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if slot(down_port) == 0 {
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// If this down-link is to a main port, this is a node of the same tree
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nodes_to_check.push(addr(down_port));
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} else {
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// Otherwise it's a side-link
|
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side_links.push(down_port);
|
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}
|
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}
|
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}
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}
|
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/// Goes up a node tree, starting from some given node.
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/// Returns the root of this tree and the root of its active pair.
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fn go_up_tree(inet: &INet, start_node: NodeId) -> (NodeId, NodeId) {
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let mut crnt_node = start_node;
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loop {
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let up_port = enter(inet, port(crnt_node, 0));
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let up_node = addr(up_port);
|
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if slot(up_port) == 0 {
|
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return (crnt_node, up_node);
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} else {
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crnt_node = up_node;
|
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}
|
||||
}
|
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}
|
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|
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fn compat_tree_to_hvm_tree(inet: &INet, root: NodeId, port_to_var_id: &mut HashMap<Port, VarId>) -> LTree {
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let kind = kind(inet, root);
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let tag = kind & TAG_MASK;
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let label = kind & LABEL_MASK; // TODO: Check if label too high, do something about it.
|
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match tag {
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ERA => LTree::Era,
|
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CON => LTree::Nod {
|
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tag: ast::core::CON,
|
||||
lft: Box::new(var_or_subtree(inet, port(root, 1), port_to_var_id)),
|
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rgt: Box::new(var_or_subtree(inet, port(root, 2), port_to_var_id)),
|
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},
|
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DUP => LTree::Nod {
|
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tag: ast::core::DUP + label as u8,
|
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lft: Box::new(var_or_subtree(inet, port(root, 1), port_to_var_id)),
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rgt: Box::new(var_or_subtree(inet, port(root, 2), port_to_var_id)),
|
||||
},
|
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REF => LTree::Ref { nam: label },
|
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NUM => LTree::Num { val: enter(inet, port(root, 1)) },
|
||||
NUMOP => todo!(), // TODO: HVM2 doesn't have numeric operator atm.
|
||||
_ => unreachable!(),
|
||||
}
|
||||
}
|
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|
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fn var_or_subtree(inet: &INet, src_port: Port, port_to_var_id: &mut HashMap<Port, VarId>) -> LTree {
|
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let dst_port = enter(inet, src_port);
|
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if slot(dst_port) == 0 {
|
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// Subtree
|
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compat_tree_to_hvm_tree(inet, addr(dst_port), port_to_var_id)
|
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} else {
|
||||
// Var
|
||||
if let Some(&var_id) = port_to_var_id.get(&src_port) {
|
||||
// Previously found var
|
||||
LTree::Var { nam: var_id_to_name(var_id) }
|
||||
} else {
|
||||
// New var
|
||||
let var_id = port_to_var_id.len() as u32;
|
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port_to_var_id.insert(dst_port, var_id);
|
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LTree::Var { nam: var_id_to_name(var_id) }
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn var_id_to_name(var_id: VarId) -> String {
|
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format!("x{var_id}")
|
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}
|
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|
@ -1,11 +1,7 @@
|
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mod compat_net;
|
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|
||||
use self::compat_net::term_to_compat_net;
|
||||
use crate::ast::{
|
||||
self,
|
||||
core::{name_to_u32, LNet},
|
||||
DefId, Definition, DefinitionBook, Name,
|
||||
};
|
||||
use self::compat_net::{compat_net_to_core, term_to_compat_net};
|
||||
use crate::ast::{self, core::name_to_u32, DefId, Definition, DefinitionBook, Name, Term};
|
||||
use std::collections::HashMap;
|
||||
|
||||
pub fn book_to_hvm_core(book: &DefinitionBook) -> anyhow::Result<ast::core::Book> {
|
||||
@ -18,15 +14,15 @@ pub fn book_to_hvm_core(book: &DefinitionBook) -> anyhow::Result<ast::core::Book
|
||||
Ok(core_book)
|
||||
}
|
||||
|
||||
fn definition_to_hvm_core(
|
||||
pub fn definition_to_hvm_core(
|
||||
definition: &Definition,
|
||||
def_to_id: &HashMap<Name, DefId>,
|
||||
) -> anyhow::Result<ast::core::LNet> {
|
||||
let term = &definition.rules[0].body;
|
||||
let compat_net = term_to_compat_net(term, def_to_id)?;
|
||||
compat_net_to_core(compat_net)
|
||||
// TODO: Multiple rules, pattern matching, etc.
|
||||
term_to_hvm_core(&definition.rules[0].body, def_to_id)
|
||||
}
|
||||
|
||||
fn compat_net_to_core(compat_net: compat_net::INet) -> anyhow::Result<LNet> {
|
||||
todo!()
|
||||
pub fn term_to_hvm_core(term: &Term, def_to_id: &HashMap<Name, DefId>) -> anyhow::Result<ast::core::LNet> {
|
||||
let compat_net = term_to_compat_net(term, def_to_id)?;
|
||||
compat_net_to_core(&compat_net)
|
||||
}
|
||||
|
27
tests/compile_terms.rs
Normal file
27
tests/compile_terms.rs
Normal file
@ -0,0 +1,27 @@
|
||||
use hvm_lang::{parser::parse_term, to_core::term_to_hvm_core};
|
||||
use pretty_assertions::assert_eq;
|
||||
use std::collections::HashMap;
|
||||
|
||||
fn check_single_term_compilation(code: &str, expected: &str) {
|
||||
let term = parse_term(code).unwrap();
|
||||
let net = term_to_hvm_core(&term, &HashMap::new()).unwrap();
|
||||
assert_eq!(net.to_string(), expected)
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn single_def_terms() {
|
||||
let terms = [
|
||||
("id", "λa a", "$ (0 x0 x0)"),
|
||||
("dup apply", "λa dup a1 a2 = a; (a1 a2)", "$ (0 (1 (0 x0 x1) x0) x1)"),
|
||||
("erased dup", "λa dup a1 a2 = a; a1", "$ (0 (1 x0 *) x0)"),
|
||||
("c_z", "λs λz z", "$ (0 * (0 x0 x0))"),
|
||||
(
|
||||
"c_s",
|
||||
"λk λs dup s0 s1 = s; λz (s0 ((k s1) z))",
|
||||
"$ (0 (0 x0 (0 x1 x2)) (0 (1 (0 x2 x3) x0) (0 x1 x3)))",
|
||||
),
|
||||
];
|
||||
for (_name, code, expected) in terms {
|
||||
check_single_term_compilation(code, expected)
|
||||
}
|
||||
}
|
Loading…
Reference in New Issue
Block a user