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This commit is contained in:
Michael Zhang 2020-02-24 08:26:55 -06:00
parent ded42bef64
commit 3d8bc75e6f
Signed by: michael
GPG key ID: BDA47A31A3C8EE6B
12 changed files with 338 additions and 193 deletions
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1
Cargo.lock generated
View file

@ -111,6 +111,7 @@ dependencies = [
name = "enterprise-macros"
version = "0.1.0"
dependencies = [
"enterprise 0.1.0",
"enterprise-compiler 0.1.0",
"proc-macro2 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
"proptest 0.9.5 (registry+https://github.com/rust-lang/crates.io-index)",

30
enterprise-compiler/src/lib.rs
View file

@ -3,6 +3,7 @@ extern crate quote;
#[macro_use]
extern crate serde_derive;
mod graph;
pub mod model;
mod utils;
mod visitor;
@ -12,11 +13,13 @@ use std::fs::File;
use std::io::Write;
use std::path::PathBuf;
pub use crate::visitor::Visitor;
use petgraph::dot::Dot;
use proc_macro2::TokenStream;
use quote::ToTokens;
use symbol::Symbol;
use crate::model::Component;
use proc_macro2::TokenStream;
use symbol::Symbol;
pub use crate::visitor::Visitor;
pub fn build(component: &Component) -> TokenStream {
let name = &component.name;
@ -26,6 +29,11 @@ pub fn build(component: &Component) -> TokenStream {
let tagged_dom = visitor.make_graph(&component.view);
let toplevel_names = visitor.gen_code(&tagged_dom);
println!("Code segments:");
for (l, r) in visitor.code_segments() {
println!("{:?}: {}", l, r);
}
// output the "model"
// looks a little bit like
// struct Name<B> {
@ -48,9 +56,9 @@ pub fn build(component: &Component) -> TokenStream {
let name = format_ident!("{}", name.as_str());
let ty: syn::Type = ty.into();
let value: syn::Expr = value.into();
model.extend(quote! { #name : std::sync::Arc<enterprise::parking_lot::Mutex<#ty>> , });
model.extend(quote! { #name : std::sync::Arc<enterprise::parking_lot::RwLock<#ty>> , });
init.extend(
quote! { #name : std::sync::Arc::new(enterprise::parking_lot::Mutex::new(#value .into())) , },
quote! { #name : std::sync::Arc::new(enterprise::parking_lot::RwLock::new(#value .into())) , },
);
}
@ -64,8 +72,17 @@ pub fn build(component: &Component) -> TokenStream {
});
}
let altgraph = visitor.graph().altgraph();
let dot = Dot::new(&altgraph);
{
let mut file = File::create("graph.dot").unwrap();
write!(file, "{:?}", dot).unwrap();
}
quote! {
use enterprise::std::List;
// use std::convert::TryFrom;
use enterprise::{Component, ValueUpdatable};
use enterprise::std::{List};
use enterprise::stdweb::web::{INode, IElement, Node, IEventTarget};
use crate::enterprise::stdweb::unstable::TryFrom;
@ -100,6 +117,5 @@ pub fn process(mod_name: impl AsRef<str>, code: impl AsRef<str>) {
let out_dir = PathBuf::from(env::var("OUT_DIR").unwrap());
let mut out_file = File::create(out_dir.join(format!("{}.rs", mod_name.as_ref()))).unwrap();
let tokens = build(&component);
write!(out_file, "use enterprise::widgets::*;\n").unwrap();
write!(out_file, "{}", tokens).unwrap();
}

11
enterprise-compiler/src/model/mod.rs
View file

@ -163,6 +163,7 @@ pub type Context = BTreeMap<Id, ContextVar>;
#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
pub enum ContextVar {
Model(ModelValue),
LoopExpr(Id),
}
#[derive(Clone, Debug, Hash, PartialOrd, Ord, PartialEq, Eq, Serialize, Deserialize)]
@ -177,7 +178,7 @@ pub enum Rsx {
Elem(Elem<Rsx>),
Code(Context, Expr),
Text(String),
ForLoop(Pat, Expr, Vec<Rsx>),
ForLoop(Pat, Expr, Type, Vec<Rsx>),
#[doc(hidden)]
_Nonexhaustive,
@ -188,8 +189,7 @@ impl PartialEq<Rsx> for Rsx {
match (self, other) {
(Rsx::Elem(this), Rsx::Elem(other)) => this == other,
(Rsx::Code(ctx, expr), Rsx::Code(ctx2, other)) => {
ctx == ctx2 &&
syn::Expr::from_adapter(expr) == syn::Expr::from_adapter(other)
ctx == ctx2 && syn::Expr::from_adapter(expr) == syn::Expr::from_adapter(other)
}
(Rsx::Text(this), Rsx::Text(other)) => this == other,
_ => false,
@ -213,14 +213,15 @@ impl ToTokens for Rsx {
let string = syn::Lit::Str(syn::LitStr::new(string.as_ref(), Span::call_site()));
stream.extend(quote!(#string));
}
Rsx::ForLoop(pat, expr, inner) => {
Rsx::ForLoop(pat, expr, ty, inner) => {
let expr = syn::Expr::from_adapter(expr);
let pat = syn::Pat::from_adapter(pat);
let ty = syn::Type::from_adapter(ty);
let mut inner_stream = TokenStream::new();
for rsx in inner {
inner_stream.extend(rsx.to_token_stream());
}
stream.extend(quote!([ for #pat in #expr ] #inner_stream [ / for ]));
stream.extend(quote!([ for #pat in #expr : #ty ] #inner_stream [ / for ]));
}
Rsx::_Nonexhaustive => unreachable!("should never be constructed"),
}

18
enterprise-compiler/src/utils/mod.rs
View file

@ -5,6 +5,24 @@ use std::collections::HashSet;
use symbol::Symbol;
use syn::*;
pub fn process_for_loop_pat(pat: &Pat) -> (Option<Symbol>, Symbol) {
let mut first = None;
let mut second = None;
if let Pat::Tuple(PatTuple { elems, .. }) = pat {
let mut iter = elems.iter();
if elems.len() == 2 {
// first one is the key
if let Some(Pat::Ident(PatIdent { ident, .. })) = iter.next() {
first = Some(Symbol::from(ident.to_string()));
}
}
if let Some(Pat::Ident(PatIdent { ident, .. })) = iter.next() {
second = Some(Symbol::from(ident.to_string()));
}
}
(first, second.unwrap())
}
pub fn get_pat_names(pat: &Pat) -> HashSet<Symbol> {
let mut result = HashSet::new();
match pat {

345
enterprise-compiler/src/visitor.rs
View file

@ -1,88 +1,31 @@
//! Visitor that traverses a model and generates code.
//!
//! Most of the code here implemetns control flow analysis
use std::collections::{BTreeMap, HashMap, HashSet, VecDeque};
use petgraph::{dot::Dot, graphmap::DiGraphMap, visit::Dfs};
use petgraph::dot::Dot;
use proc_macro2::{TokenStream, TokenTree};
use quote::ToTokens;
use syn::{Expr, Type};
use syn_serde::Syn;
use crate::model::{Elem, Id, ModelValue, ModelMap, Rsx, ContextVar, TagLhs, TagRhs, TaggedRsx};
use crate::graph::{Action as DepAction, DependencyGraph, Dfs, InnerGraph, Node as DepNode};
use crate::model::{
Context, ContextVar, Elem, Id, ModelMap, ModelValue, Rsx, TagLhs, TagRhs, TaggedRsx,
};
use crate::utils;
use crate::{Symbol};
/// A node within the dependency graph.
#[derive(Copy, Clone, Debug, Hash, PartialOrd, Ord, PartialEq, Eq)]
pub enum DepNode {
/// An anonymous code segment
CodeSeg(Symbol),
/// This is an attribute on an element
///
/// Not read-only
RsxAttr(Symbol, Symbol),
/// This is an "on:" attribute, representing an event handler
RsxEvent(Symbol, Symbol),
/// This is a text node (innertext)
///
/// These are read-only
RsxSpan(Symbol),
/// This is something in the model
ModelValue(ModelValue),
/// This is an iterator (for-loop)
Iterator(Symbol),
}
#[derive(Debug, Clone)]
pub enum DepAction {
ValueChange,
IndexChange(Symbol),
SubmitEvt,
}
impl DepNode {
// Generates code for when this updates
fn gen_update_code(&self, updates: &mut TokenStream, update_func: &mut TokenStream) {
match self {
DepNode::ModelValue(ModelValue::Leaf(sym)) => {
let sym_name = format_ident!("{}", sym.to_string());
let inner_lock = format_ident!("inner_lock_{}", Symbol::gensym().as_str());
updates.extend(quote! {
let #inner_lock = self.#sym_name.clone();
});
update_func.extend(quote! {
enterprise::ValueUpdatable::update(#inner_lock, new_value);
});
}
DepNode::RsxSpan(id) => {
let id_str = id.as_str();
update_func.extend(quote! {
if let Some(target) = enterprise::stdweb::web::document().get_element_by_id(#id_str) {
target.set_text_content(&new_value.clone());
}
});
}
DepNode::Iterator(id) => {
let update_id = format_ident!("update_loop_{}", id.as_str());
update_func.extend(quote! {
self.#update_id();
});
}
_ => (),
}
}
}
type DependencyGraph = DiGraphMap<Ptr<DepNode>, DepAction>;
use crate::Symbol;
#[derive(Default, Debug)]
pub struct Visitor {
idx: u32,
pub(crate) deps: DependencyGraph,
model: HashMap<Id, (Type, Expr)>,
code_segments: HashMap<Id, Expr>,
code_segments: HashMap<Id, TokenStream>,
pub(crate) impl_code: TokenStream,
elem_attr_map: HashMap<Id, HashSet<Id>>,
elem_evt_map: HashMap<Id, HashSet<Id>>,
}
impl Visitor {
@ -96,10 +39,14 @@ impl Visitor {
&self.impl_code
}
pub fn code_segments(&self) -> &HashMap<Id, Expr> {
pub fn code_segments(&self) -> &HashMap<Id, TokenStream> {
&self.code_segments
}
pub fn graph(&self) -> &DependencyGraph {
&self.deps
}
pub fn load_model(&mut self, model: &ModelMap) {
for (key, (ty, init)) in model {
let ty = syn::Type::from_adapter(ty);
@ -108,10 +55,6 @@ impl Visitor {
}
}
pub fn dot(&self) -> Dot<&DependencyGraph> {
Dot::new(&self.deps)
}
fn hook_attrs(&mut self, node_id: Symbol, attrs: &BTreeMap<TagLhs, TagRhs>) {
for (lhs, rhs) in attrs {
match (lhs, rhs) {
@ -122,8 +65,11 @@ impl Visitor {
if self.model.contains_key(&text_sym) {
let attr_node = DepNode::RsxAttr(node_id, Symbol::from(attr));
let model_node = DepNode::ModelValue(ModelValue::Leaf(text_sym));
self.deps
.add_edge(attr_node, model_node, DepAction::ValueChange);
self.deps.add_edge(
attr_node.clone(),
model_node.clone(),
DepAction::ValueChange,
);
self.deps
.add_edge(model_node, attr_node, DepAction::ValueChange);
if let Some(set) = self.elem_attr_map.get_mut(&node_id) {
@ -137,24 +83,48 @@ impl Visitor {
}
(TagLhs::On(evt), TagRhs::Code(expr)) => {
let syn_expr = syn::Expr::from_adapter(expr);
let code_node_id = self.hook_code_segment(&syn_expr);
let unit_type = syn::parse_str::<syn::Type>("()").unwrap();
let code_node_id =
self.hook_code_segment(&Context::default(), &syn_expr, Some(unit_type));
// add hook from attr to the code segment
let from = DepNode::RsxEvent(node_id, Symbol::from(evt));
let to = DepNode::CodeSeg(code_node_id);
self.deps.add_edge(from, to, DepAction::ValueChange);
if let Some(set) = self.elem_evt_map.get_mut(&node_id) {
set.insert(Symbol::from(evt));
} else {
let mut set = HashSet::new();
set.insert(Symbol::from(evt));
self.elem_evt_map.insert(node_id, set);
}
}
_ => (),
};
}
}
fn hook_code_segment(&mut self, expr: &syn::Expr) -> Symbol {
fn hook_code_segment(
&mut self,
ctx: &Context,
expr: &syn::Expr,
return_type: Option<Type>,
) -> Symbol {
let code_node_id = Symbol::gensym();
println!(
"INPUT[{}]: {:?} {} : {:?}",
code_node_id,
ctx,
expr.to_token_stream(),
return_type
);
// see if we need to parse i@, e@
// see if we need to parse i@, o@
let mut has_io = false;
let mut input_vars = HashSet::new();
let mut output_vars = HashSet::new();
let actual_expr = if let syn::Expr::Closure(syn::ExprClosure { inputs, body, .. }) = expr {
let mut has_io = false;
for arg in inputs.iter() {
if let syn::Pat::Ident(syn::PatIdent {
ident,
@ -171,6 +141,7 @@ impl Visitor {
let from = DepNode::ModelValue(ModelValue::Leaf(sym));
let to = DepNode::CodeSeg(code_node_id);
self.deps.add_edge(from, to, DepAction::ValueChange);
input_vars.insert(sym);
has_io = true;
}
("o", syn::Pat::Ident(syn::PatIdent { ident, .. })) => {
@ -180,6 +151,7 @@ impl Visitor {
let from = DepNode::CodeSeg(code_node_id);
let to = DepNode::ModelValue(ModelValue::Leaf(sym));
self.deps.add_edge(from, to, DepAction::ValueChange);
output_vars.insert(sym);
has_io = true;
}
_ => (),
@ -194,8 +166,71 @@ impl Visitor {
} else {
expr.clone()
};
// perform a rudimentary search and put them in as input vars if they aren't already in there
for sym in self.extract_model_dependencies_from_expr(&expr, &self.get_model_names()) {
if !output_vars.contains(&sym) {
input_vars.insert(sym);
has_io = true;
}
}
self.code_segments.insert(code_node_id, actual_expr.clone());
println!("==> IO[{}]: {:?} {:?}", has_io, input_vars, output_vars);
let code_fn = format_ident!("code_segment_{}", code_node_id.to_string());
let mut prelude = TokenStream::new();
// add context variables
for (id, ctxvar) in ctx.iter() {
let id = format_ident!("{}", id.to_string());
prelude.extend(quote!(let #id =));
match ctxvar {
ContextVar::Model(model_value) => {
// let line = Indexable::index(self.todos, key)
fn gen_model_value_code(val: &ModelValue) -> TokenStream {
match val {
ModelValue::Leaf(sym) => {
let name = format_ident!("{}", sym.to_string());
quote!(self . #name)
}
ModelValue::Index(val, idx) => {
let idx = format_ident!("{}", idx.to_string());
let val = gen_model_value_code(val);
quote!(Indexable :: index ( #val , #idx ))
}
}
}
let mv_code = gen_model_value_code(model_value);
prelude.extend(quote!(#mv_code ;));
}
ContextVar::LoopExpr(id) => {
// this means put the loop expression in there
let id_str = format_ident!("code_segment_{}", id.to_string());
prelude.extend(quote!(self . #id_str () . read () ;));
}
}
}
// stick the model variables into the prelude
if has_io {
for (id, _) in self.model.iter() {
let id_str = format_ident!("{}", id.to_string());
if input_vars.contains(id) {
prelude.extend(quote!(let #id_str = self . # id_str . clone () ;));
}
if output_vars.contains(id) {
prelude.extend(quote!(let #id_str = self . # id_str . clone () ;));
}
}
}
self.code_segments
.insert(code_node_id, quote!(#actual_expr));
let return_type = return_type
.unwrap_or_else(|| syn::parse_str::<syn::Type>("impl std::any::Any").unwrap());
self.impl_code.extend(quote! {
fn #code_fn(&self) -> #return_type {
#prelude
#actual_expr . into()
}
});
// look for model references in the code segment
// let names = self.get_model_names();
@ -210,13 +245,19 @@ impl Visitor {
}
pub fn make_graph(&mut self, nodes: &[Rsx]) -> Vec<TaggedRsx> {
self.make_graph_rec(Context::default(), nodes)
}
fn make_graph_rec(&mut self, ctx: Context, nodes: &[Rsx]) -> Vec<TaggedRsx> {
let mut new_nodes = Vec::new();
for node in nodes {
let node_id = Symbol::gensym();
let new_node = match node {
// Process a < /> tag
Rsx::Elem(Elem { tag, attrs, inner }) => {
let tag_inner = inner.as_ref().map(|inner| self.make_graph(inner));
let tag_inner = inner
.as_ref()
.map(|inner| self.make_graph_rec(ctx.clone(), inner));
// add deps for the attributes
self.hook_attrs(node_id, attrs);
@ -231,25 +272,32 @@ impl Visitor {
}
// Code changes are dependent on variables within the code segment in the model
// Every time the model changes, the code segment must re-evaluate
Rsx::Code(ctx, expr) => {
Rsx::Code(_, expr) => {
let syn_expr = Syn::from_adapter(&*expr);
let names = self.get_model_names();
let deps = self.extract_model_dependencies_from_expr(&syn_expr, &names);
for dep in deps {
let from = DepNode::ModelValue(ModelValue::Leaf(dep));
let to = DepNode::RsxSpan(node_id);
self.deps.add_edge(from, to, DepAction::ValueChange);
}
let string_type =
syn::parse_str::<syn::Type>("impl std::string::ToString").unwrap();
let code_node_id = self.hook_code_segment(&ctx, &syn_expr, Some(string_type));
TaggedRsx::Code(node_id, ctx.clone(), Box::new(syn_expr.clone().to_adapter()))
// let names = self.get_model_names();
// let deps = self.extract_model_dependencies_from_expr(&syn_expr, &names);
// for dep in deps {
// let from = DepNode::ModelValue(ModelValue::Leaf(dep));
// let to = DepNode::RsxSpan(node_id);
// self.deps.add_edge(from, to, DepAction::ValueChange);
// }
TaggedRsx::Code(
code_node_id,
ctx.clone(),
Box::new(syn_expr.clone().to_adapter()),
)
}
Rsx::Text(literal) => TaggedRsx::Text(node_id, literal.clone()),
// Process a for-loop
// The for-loop should exist by itself in the dep tree
// Everything inside the for loop is a dependency
Rsx::ForLoop(pat, expr, inner) => {
Rsx::ForLoop(pat, expr, ty, inner) => {
let syn_pat = syn::Pat::from_adapter(&pat);
let new_inner = self.make_graph(inner.as_ref());
let mut names = self.get_model_names();
names.extend(utils::get_pat_names(&syn_pat));
@ -257,12 +305,27 @@ impl Visitor {
// figure out which variables in the iterator that it depends on
// for example, [for x in y] depends on y.
// This says that whenever something in y changes, the iterator should also change
let syn_expr = Syn::from_adapter(&*expr);
let code_node_id = self.hook_code_segment(&syn_expr);
let syn_expr = syn::Expr::from_adapter(expr);
let syn_ty = syn::Type::from_adapter(ty);
let wrapped =
syn::parse2::<syn::Type>(quote!(Arc < RwLock < #syn_ty > >)).unwrap();
let code_node_id = self.hook_code_segment(&ctx, &syn_expr, Some(wrapped));
let from = DepNode::CodeSeg(code_node_id);
let to = DepNode::Iterator(node_id);
self.deps.add_edge(from, to, DepAction::ValueChange);
let ctx = {
let mut context = ctx.clone();
let (key, loopvar) = utils::process_for_loop_pat(&syn_pat);
// let key = key.unwrap_or_else(|| Symbol::gensym());
// context.insert(key, ContextVar::LoopKey(code_node_id));
// context.insert(loopvar, ContextVar::Index(ContextVar::LoopExpr(code_node_id), ContextVar::LoopKey));
context.insert(loopvar, ContextVar::LoopExpr(code_node_id));
// get the actual variable name
context
};
let new_inner = self.make_graph_rec(ctx, inner.as_ref());
// let deps = self.extract_model_dependencies_from_expr(&syn_expr, &names);
// for dep in deps {
// let from = DepNode::ModelValue(ModelValue::Leaf(dep));
@ -278,7 +341,8 @@ impl Visitor {
let deps = self.extract_rsx_dependents(&child, &names);
let from = DepNode::Iterator(node_id);
for dep in deps {
self.deps.add_edge(from, dep, DepAction::ValueChange);
self.deps
.add_edge(from.clone(), dep, DepAction::ValueChange);
}
}
@ -292,6 +356,10 @@ impl Visitor {
}
pub fn gen_code(&mut self, nodes: &[TaggedRsx]) -> Vec<String> {
self.gen_code_rec(nodes)
}
fn gen_code_rec(&mut self, nodes: &[TaggedRsx]) -> Vec<String> {
let mut names = Vec::new();
for node in nodes {
let node_str = node.get_id().as_str();
@ -299,18 +367,22 @@ impl Visitor {
match node {
TaggedRsx::Elem(node_id, Elem { tag, inner, .. }) => {
let mut updates = TokenStream::new();
// check attrs to see which ones are bound
// once found, add event listeners that propagate changes once these are changed.
if let Some(this_attrs) = self.elem_attr_map.get(node_id) {
for attr in this_attrs {
let starting = DepNode::RsxAttr(*node_id, *attr);
let mut dfs = Dfs::new(&self.deps, starting);
let mut update_func = TokenStream::new();
while let Some(nx) = dfs.next(&self.deps) {
if nx != starting {
nx.gen_update_code(&mut updates, &mut update_func);
let mut dfs = Dfs::new(&self.deps, &starting).unwrap();
while let Some(node) = dfs.next() {
if node != &starting {
node.gen_update_code(&mut updates, &mut update_func);
}
}
updates.extend(quote! {
{
// need to clone this inside so it can be moved
let inner_el = el.clone();
el.add_event_listener(move |evt: enterprise::stdweb::web::event::InputEvent| {
let new_value = enterprise::stdweb::web::html_element::InputElement::try_from(inner_el.clone()).unwrap().raw_value();
@ -320,6 +392,39 @@ impl Visitor {
});
}
}
// add event listeners for the events
if let Some(this_evts) = self.elem_evt_map.get(node_id) {
for evt in this_evts {
let evt_str = evt.to_string();
let evt_type = match evt.as_ref() {
"submit" => {
Some(quote!(enterprise::stdweb::web::event::SubmitEvent))
}
_ => None,
};
if let Some(evt_type) = evt_type {
let starting = DepNode::RsxEvent(*node_id, *evt);
let mut update_func = TokenStream::new();
let mut dfs = Dfs::new(&self.deps, &starting).unwrap();
while let Some(node) = dfs.next() {
if node != &starting {
node.gen_update_code(&mut updates, &mut update_func);
}
}
updates.extend(quote! {
{
// need to clone this inside so it can be moved
let inner_el = el.clone();
el.add_event_listener(move |evt: #evt_type| {
let new_value = enterprise::stdweb::web::html_element::InputElement::try_from(inner_el.clone()).unwrap().raw_value();
#update_func
});
}
});
}
}
}
let elem_as_str = format!("{}", node.to_token_stream());
self.impl_code.extend(quote! {
#[doc = #elem_as_str]
@ -331,44 +436,16 @@ impl Visitor {
}
});
if let Some(inner) = inner {
self.gen_code(inner);
self.gen_code_rec(inner);
}
names.push(format!("{}", make_node_id));
}
TaggedRsx::Code(_, ctx, expr) => {
let expr = syn::Expr::from_adapter(expr);
let code_id = format_ident!("code_{}", node_str);
let mut init_code = TokenStream::new();
for (id, ctxvar) in ctx.iter() {
let id = format_ident!("{}", id.to_string());
init_code.extend(quote!(let #id =));
match ctxvar {
ContextVar::Model(model_value) => {
// let line = Indexable::index(self.todos, key)
fn generate_model_value_code(val: &ModelValue) -> TokenStream {
match val {
ModelValue::Leaf(sym) => {
let name = format_ident!("{}", sym.to_string());
quote!(self . #name)
}
ModelValue::Index(val, idx) => {
let idx = format_ident!("{}", idx.to_string());
let val = generate_model_value_code(val);
quote!(Indexable :: index ( #val , #idx ))
}
}
}
}
}
}
TaggedRsx::Code(code_node_id, ctx, expr) => {
// let expr = syn::Expr::from_adapter(expr);
// // let code_id = format_ident!("code_{}", node_str);
// let code_node_id = self.hook_code_segment(&ctx, &expr);
self.impl_code.extend(quote! {
/// Actual code
fn #code_id(&self) -> impl std::string::ToString {
#expr
}
/// Code
fn #make_node_id(&self) -> enterprise::stdweb::web::Node {
let el = enterprise::stdweb::web::document().create_element("span").expect("shouldn't fail");
@ -382,7 +459,7 @@ impl Visitor {
self.impl_code.extend(quote! {
/// Text node
fn #make_node_id(&self) -> enterprise::stdweb::web::Node {
let text = enterprise::widgets::Text::new(#literal);
let text = enterprise::std::widgets::Text::new(#literal);
text.render()
}
});
@ -394,7 +471,7 @@ impl Visitor {
// Generate code for the initial creation of the loop
let mut func_calls = TokenStream::new();
for name in self.gen_code(&inner) {
for name in self.gen_code_rec(&inner) {
let name = format_ident!("{}", name);
func_calls.extend(quote! {
let sub = self.#name();
@ -446,7 +523,7 @@ impl Visitor {
.collect::<HashSet<_>>();
result.extend(code_deps);
}
Rsx::ForLoop(_pat, _expr, inner) => {
Rsx::ForLoop(_pat, _expr, _ty, inner) => {
for child in inner.iter() {
self.extract_rsx_dependents(child, names);
}

11
enterprise-macros/Cargo.toml
View file

@ -15,11 +15,12 @@ path = "src/tests.rs"
proptest = "0.9.5"
[dependencies]
enterprise = { path = ".." }
enterprise-compiler = { path = "../enterprise-compiler" }
proc-macro2 = { version = "1.0.7", features = ["span-locations"] }
quote = "1.0.2"
thiserror = "1.0.9"
symbol = { path = "../symbol" }
enterprise-compiler = { path = "../enterprise-compiler" }
syn-serde = { path = "../syn-serde" }
syn = { version = "1.0.14", features = ["extra-traits", "full"] }
serde_json = "1.0.48"
symbol = { path = "../symbol" }
syn = { version = "1.0.14", features = ["extra-traits", "full"] }
syn-serde = { path = "../syn-serde" }
thiserror = "1.0.9"

18
enterprise-macros/src/parser.rs
View file

@ -183,7 +183,7 @@ impl Visitor {
fn consume_view(&mut self) -> Result<Vec<Rsx>, ParseError> {
enum Container {
Tag(String, BTreeMap<TagLhs, TagRhs>),
ForLoop(Pat, Expr),
ForLoop(Pat, Expr, Type),
}
let mut rsx_parser = RsxParser::new(self.0.clone());
@ -227,18 +227,24 @@ impl Visitor {
}
}
RsxToken::Code(expr) => {
result.push(Rsx::Code(expr.to_adapter()));
result.push(Rsx::Code(BTreeMap::new(), expr.to_adapter()));
}
RsxToken::Str(string) => {
result.push(Rsx::Text(string));
}
RsxToken::OpeningFor(pat, expr) => {
tag_stack.push((Container::ForLoop(pat, expr), result.clone()));
RsxToken::OpeningFor(pat, expr, ty) => {
tag_stack.push((Container::ForLoop(pat, expr, ty), result.clone()));
}
RsxToken::ClosingFor => {
if let Some((Container::ForLoop(pat, expr), mut last_result)) = tag_stack.pop()
if let Some((Container::ForLoop(pat, expr, ty), mut last_result)) =
tag_stack.pop()
{
last_result.push(Rsx::ForLoop(pat.to_adapter(), expr.to_adapter(), result));
last_result.push(Rsx::ForLoop(
pat.to_adapter(),
expr.to_adapter(),
ty.to_adapter(),
result,
));
result = last_result;
} else {
return Err(ParseError::ClosedTooFar);

21
enterprise-macros/src/rsx.rs
View file

@ -6,8 +6,10 @@ use enterprise_compiler::model::{TagLhs, TagRhs};
use proc_macro2::{token_stream::IntoIter, Delimiter, Ident, TokenStream, TokenTree};
use symbol::Symbol;
use syn::{
braced,
parse::{Parse, ParseStream},
Expr, Lit, Pat, Result as SynResult, Token,
token::Brace,
Expr, Lit, Pat, Result as SynResult, Token, Type,
};
use syn_serde::Syn;
@ -161,16 +163,23 @@ impl RsxParser {
kw_for: Token![for],
pat: Pat,
kw_in: Token![in],
bruh: Brace,
expr: Expr,
colon: Token![:],
ty: Type,
}
impl Parse for ForLoopHeader {
fn parse(input: ParseStream) -> SynResult<Self> {
let expr;
Ok(ForLoopHeader {
kw_for: input.parse()?,
pat: input.parse()?,
kw_in: input.parse()?,
expr: input.parse()?,
bruh: braced!(expr in input),
expr: expr.parse()?,
colon: input.parse()?,
ty: input.parse()?,
})
}
}
@ -179,7 +188,11 @@ impl RsxParser {
match stream.peek() {
Some(TokenTree::Ident(ident)) if &ident.to_string() == "for" => {
let for_loop = syn::parse2::<ForLoopHeader>(group.stream())?;
Ok(Some(RsxToken::OpeningFor(for_loop.pat, for_loop.expr)))
Ok(Some(RsxToken::OpeningFor(
for_loop.pat,
for_loop.expr,
for_loop.ty,
)))
}
Some(TokenTree::Punct(punct)) if punct.as_char() == '/' => {
stream.next();
@ -216,7 +229,7 @@ pub(crate) enum RsxToken {
ClosingTag(Symbol),
Str(String),
Code(Expr),
OpeningFor(Pat, Expr),
OpeningFor(Pat, Expr, Type),
ClosingFor,
}

33
enterprise-macros/src/tests.rs
View file

@ -16,47 +16,34 @@ component! {
}
view {
<input bind:value="value" on:submit={|o@todos| { todos.push(value); value = ""; }} />
<input bind:value="value" on:submit={|o@todos, o@value| { set!(todos = todos.with(value)); set!(value = ""); }} />
<ul>
[for (key, line) in todos]
<li>{line} <a on:click={|o@todos| { todos.remove(key); }}>"[x]"</a></li>
[for (key, line) in {todos} : List<String>]
<li>{line}</li>
[/for]
</ul>
}
}
}
// pub mod enterprise {
// include!("../../ouais.rs");
// }
pub mod enterprise {
include!("../../ouais.rs");
}
fn main() {
let component: Component = serde_json::from_str(TodoMVC.as_ref()).unwrap();
let mut visitor = Visitor::new();
visitor.load_model(&component.model);
visitor.make_graph(&component.view);
// let mut visitor = Visitor::new();
// visitor.load_model(&component.model);
// visitor.make_graph(&component.view);
// println!("Tagged dom: {:?}", tagged_dom);
// let toplevel_names = visitor.gen_code(&tagged_dom);
// println!("Toplevel names: {:?}", toplevel_names);
println!("Impl code: {}", &visitor.impl_code());
let dot = visitor.dot();
{
let mut file = File::create("graph.dot").unwrap();
write!(file, "{:?}", dot).unwrap();
}
// println!("Impl code: {}", &visitor.impl_code());
let all_code = enterprise_compiler::build(&component);
{
let mut file = File::create("ouais.rs").unwrap();
write!(file, "{}", all_code).unwrap();
}
println!();
println!("Code segments:");
for (l, r) in visitor.code_segments() {
println!("{:?}: {}", l, r.to_token_stream());
}
}

6
examples/todomvc/src/build.rs
View file

@ -9,10 +9,10 @@ component! {
}
view {
<input bind:value="value" on:submit={|o@todos| { todos.push(value); value = ""; }} />
<input bind:value="value" on:submit={|o@todos, o@value| { set!(todos = todos.with(value)); set!(value = ""); }} />
<ul>
[for (key, line) in todos]
<li>{line} <a on:click={|o@todos| { todos.remove(key); }}>"[x]"</a></li>
[for (key, line) in {todos} : List<String>]
<li>{line}</li>
[/for]
</ul>
}

15
src/lib.rs
View file

@ -14,7 +14,7 @@ mod forloop;
use rust_std::sync::Arc;
use parking_lot::Mutex;
use parking_lot::RwLock;
use stdweb::web::Node;
pub use crate::backend::{Backend, Web};
@ -37,12 +37,19 @@ macro_rules! enterprise_mod {
}
}
#[macro_export]
macro_rules! set {
($name:ident = $expr:expr) => {
ValueUpdatable::update($name, $expr.into())
};
}
pub trait ValueUpdatable {
fn update(_: Arc<Mutex<Self>>, _: String);
fn update(_: Arc<RwLock<Self>>, _: Self);
}
impl ValueUpdatable for String {
fn update(value_ref: Arc<Mutex<Self>>, new_value: String) {
*value_ref.lock() = new_value;
fn update(value_ref: Arc<RwLock<Self>>, new_value: String) {
*value_ref.write() = new_value;
}
}

22
src/std/list.rs
View file

@ -2,11 +2,15 @@ use std::collections::HashMap;
use std::fmt::{self, Debug, Formatter};
use std::marker::PhantomData;
use std::ops::Index;
use std::sync::Arc;
use std::ptr::NonNull;
use parking_lot::RwLock;
use symbol::Symbol;
use crate::ValueUpdatable;
/// A list that guarantees:
/// - O(1) insertion
/// - O(1) deletion
@ -71,7 +75,7 @@ impl<T: Clone> Clone for List<T> {
fn clone(&self) -> Self {
let mut new_list = List::new();
for item in self.iter() {
new_list.insert(item.clone());
new_list.push(item.clone());
}
new_list
}
@ -144,8 +148,14 @@ impl<T> List<T> {
}
}
/// Immutable insert
pub fn with(mut self, item: T) -> List<T> {
self.push(item);
self
}
/// Inserts the specified item into the list
pub fn insert(&mut self, item: T) -> Symbol {
pub fn push(&mut self, item: T) -> Symbol {
let node = Node {
prev: None,
next: None,
@ -192,6 +202,14 @@ impl<T> List<T> {
}
}
impl<T> ValueUpdatable for List<T> {
fn update(value_ref: Arc<RwLock<Self>>, new_value: Self) {
// TODO: merge?
let mut locked = value_ref.write();
*locked = new_value;
}
}
#[cfg(test)]
mod tests {
use super::List;