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Merge pull request #980 from ethcore/binary-serializer

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Auto (with codegen) binary serializer
This commit is contained in:
Nikolay Volf 2016-04-25 02:37:21 +03:00
commit 2d6f9af612
14 changed files with 1047 additions and 3 deletions
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8
Cargo.lock generated
View File

@ -237,11 +237,15 @@ dependencies = [
name = "ethcore"
version = "1.1.0"
dependencies = [
"bincode 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
"clippy 0.0.63 (registry+https://github.com/rust-lang/crates.io-index)",
"crossbeam 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
"env_logger 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
"ethash 1.1.0",
"ethcore-devtools 1.1.0",
"ethcore-ipc 1.1.0",
"ethcore-ipc-codegen 1.1.0",
"ethcore-ipc-nano 1.1.0",
"ethcore-util 1.1.0",
"ethjson 0.1.0",
"heapsize 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
@ -250,6 +254,10 @@ dependencies = [
"num_cpus 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
"rust-crypto 0.2.35 (registry+https://github.com/rust-lang/crates.io-index)",
"rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
"semver 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
"serde 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
"serde_codegen 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
"syntex 0.31.0 (registry+https://github.com/rust-lang/crates.io-index)",
"time 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
]

4
ipc/codegen/src/codegen.rs
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@ -298,14 +298,14 @@ fn implement_dispatch_arms(
.map(|dispatch| { index = index + 1; implement_dispatch_arm(cx, builder, index as u32, dispatch, buffer, replacements) }).collect()
}
fn strip_ptr(ty: &P<ast::Ty>) -> P<ast::Ty> {
pub fn strip_ptr(ty: &P<ast::Ty>) -> P<ast::Ty> {
if let ast::TyKind::Rptr(_, ref ptr_mut) = ty.node {
ptr_mut.ty.clone()
}
else { ty.clone() }
}
fn has_ptr(ty: &P<ast::Ty>) -> bool {
pub fn has_ptr(ty: &P<ast::Ty>) -> bool {
if let ast::TyKind::Rptr(_, ref _ptr_mut) = ty.node {
true
}

5
ipc/codegen/src/lib.rs
View File

@ -54,6 +54,7 @@ pub fn register(reg: &mut syntex::Registry) {
reg.add_attr("feature(custom_attribute)");
reg.add_decorator("derive_Ipc", codegen::expand_ipc_implementation);
reg.add_decorator("derive_Binary", serialization::expand_serialization_implementation);
}
#[cfg(not(feature = "with-syntex"))]
@ -62,4 +63,8 @@ pub fn register(reg: &mut rustc_plugin::Registry) {
syntax::parse::token::intern("derive_Ipc"),
syntax::ext::base::MultiDecorator(
Box::new(codegen::expand_ipc_implementation)));
reg.register_syntax_extension(
syntax::parse::token::intern("derive_Binary"),
syntax::ext::base::MultiDecorator(
Box::new(serialization::expand_serialization_implementation)));
}

1
ipc/codegen/src/lib.rs.in
View File

@ -15,4 +15,5 @@
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
mod codegen;
mod serialization;
pub mod typegen;

585
ipc/codegen/src/serialization.rs Normal file
View File

@ -0,0 +1,585 @@
// Copyright 2015, 2016 Ethcore (UK) Ltd.
// This file is part of Parity.
// Parity is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Parity is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
use aster;
use syntax::ast::{
MetaItem,
Item,
Ident,
};
use syntax::ast;
use syntax::codemap::Span;
use syntax::ext::base::{Annotatable, ExtCtxt};
use syntax::ext::build::AstBuilder;
use syntax::ptr::P;
pub struct Error;
use super::codegen;
pub fn expand_serialization_implementation(
cx: &mut ExtCtxt,
span: Span,
meta_item: &MetaItem,
annotatable: &Annotatable,
push: &mut FnMut(Annotatable)
) {
let item = match *annotatable {
Annotatable::Item(ref item) => item,
_ => {
cx.span_err(meta_item.span, "`#[derive(Binary)]` may only be applied to structs and enums");
return;
},
};
let builder = aster::AstBuilder::new().span(span);
let impl_item = match serialize_item(cx, &builder, &item) {
Ok(item) => item,
Err(Error) => {
// An error occured, but it should have been reported already.
return;
},
};
push(Annotatable::Item(impl_item))
}
fn serialize_item(
cx: &ExtCtxt,
builder: &aster::AstBuilder,
item: &Item,
) -> Result<P<ast::Item>, Error> {
let generics = match item.node {
ast::ItemKind::Struct(_, ref generics) => generics,
ast::ItemKind::Enum(_, ref generics) => generics,
_ => {
cx.span_err(
item.span,
"`#[derive(Binary)]` may only be applied to structs and enums");
return Err(Error);
},
};
let ty = builder.ty().path()
.segment(item.ident).with_generics(generics.clone()).build()
.build();
let where_clause = &generics.where_clause;
let binary_expressions = try!(binary_expr(cx,
&builder,
&item,
&generics,
ty.clone()));
let (size_expr, read_expr, write_expr) =
(binary_expressions.size, binary_expressions.read, binary_expressions.write);
Ok(quote_item!(cx,
impl $generics ::ipc::BinaryConvertable for $ty $where_clause {
fn size(&self) -> usize {
$size_expr
}
fn to_bytes(&self, buffer: &mut [u8], length_stack: &mut VecDeque<usize>) -> Result<(), BinaryConvertError> {
$write_expr
}
fn from_bytes(buffer: &[u8], length_stack: &mut VecDeque<usize>) -> Result<Self, BinaryConvertError> {
$read_expr
}
fn len_params() -> usize {
1
}
}
).unwrap())
}
#[allow(unreachable_code)]
fn binary_expr(
cx: &ExtCtxt,
builder: &aster::AstBuilder,
item: &Item,
impl_generics: &ast::Generics,
ty: P<ast::Ty>,
) -> Result<BinaryExpressions, Error> {
match item.node {
ast::ItemKind::Struct(ref variant_data, _) => {
binary_expr_item_struct(
cx,
builder,
impl_generics,
ty,
item.span,
variant_data,
)
},
ast::ItemKind::Enum(ref enum_def, _) => {
binary_expr_enum(
cx,
builder,
item.ident,
impl_generics,
ty,
item.span,
enum_def,
)
},
_ => {
cx.span_bug(item.span,
"expected ItemStruct or ItemEnum in #[derive(Binary)]");
Err(Error)
},
}
}
struct BinaryExpressions {
pub size: P<ast::Expr>,
pub write: P<ast::Expr>,
pub read: P<ast::Expr>,
}
fn binary_expr_struct(
cx: &ExtCtxt,
builder: &aster::AstBuilder,
ty: P<ast::Ty>,
fields: &[ast::StructField],
value_ident: Option<ast::Ident>,
instance_ident: Option<ast::Ident>,
) -> Result<BinaryExpressions, Error> {
let size_exprs: Vec<P<ast::Expr>> = fields.iter().enumerate().map(|(index, field)| {
let field_type_ident = builder.id(
&::syntax::print::pprust::ty_to_string(
&codegen::strip_ptr(&field.ty)));
let index_ident = builder.id(format!("__field{}", index));
value_ident.and_then(|x| {
let field_id = builder.id(field.ident.unwrap());
Some(quote_expr!(cx,
match $field_type_ident::len_params() {
0 => mem::size_of::<$field_type_ident>(),
_ => $x. $field_id .size(),
}))
})
.unwrap_or_else(|| quote_expr!(cx, match $field_type_ident::len_params() {
0 => mem::size_of::<$field_type_ident>(),
_ => $index_ident .size(),
}))
}).collect();
let first_size_expr = size_exprs[0].clone();
let mut total_size_expr = quote_expr!(cx, 0usize + $first_size_expr);
for index in 1..size_exprs.len() {
let next_expr = size_exprs[index].clone();
total_size_expr = quote_expr!(cx, $total_size_expr + $next_expr);
}
let mut write_stmts = Vec::<ast::Stmt>::new();
write_stmts.push(quote_stmt!(cx, let mut offset = 0usize;).unwrap());
let mut map_stmts = Vec::<ast::Stmt>::new();
let field_amount = builder.id(&format!("{}",fields.len()));
map_stmts.push(quote_stmt!(cx, let mut map = vec![0usize; $field_amount];).unwrap());
map_stmts.push(quote_stmt!(cx, let mut total = 0usize;).unwrap());
for (index, field) in fields.iter().enumerate() {
let field_type_ident = builder.id(
&::syntax::print::pprust::ty_to_string(
&codegen::strip_ptr(&field.ty)));
let member_expr = match value_ident {
Some(x) => {
let field_id = builder.id(field.ident.unwrap());
quote_expr!(cx, $x . $field_id)
},
None => {
let index_ident = builder.id(format!("__field{}", index));
quote_expr!(cx, $index_ident)
},
};
write_stmts.push(quote_stmt!(cx, let next_line = offset + match $field_type_ident::len_params() {
0 => mem::size_of::<$field_type_ident>(),
_ => { let size = $member_expr .size(); length_stack.push_back(size); size },
}).unwrap());
write_stmts.push(quote_stmt!(cx,
if let Err(e) = $member_expr .to_bytes(&mut buffer[offset..next_line], length_stack) { return Err(e) };).unwrap());
write_stmts.push(quote_stmt!(cx, offset = next_line; ).unwrap());
let field_index = builder.id(&format!("{}", index));
map_stmts.push(quote_stmt!(cx, map[$field_index] = total;).unwrap());
map_stmts.push(quote_stmt!(cx, let size = match $field_type_ident::len_params() {
0 => mem::size_of::<$field_type_ident>(),
_ => length_stack.pop_front().unwrap(),
}).unwrap());
map_stmts.push(quote_stmt!(cx, total = total + size;).unwrap());
};
let read_expr = match fields.iter().any(|f| codegen::has_ptr(&f.ty)) {
true => {
// cannot create structs with pointers
quote_expr!(cx, Err(::ipc::binary::BinaryConvertError))
},
false => {
if value_ident.is_some() {
let instance_create = named_fields_sequence(cx, &ty, fields);
quote_expr!(cx, { $map_stmts; $instance_create; Ok(result) })
}
else {
let map_variant = P(fields_sequence(cx, &ty, fields, &instance_ident.unwrap_or(builder.id("Self"))));
quote_expr!(cx, { $map_stmts; Ok($map_variant) })
}
},
};
Ok(BinaryExpressions {
size: total_size_expr,
write: quote_expr!(cx, { $write_stmts; Ok(()) } ),
read: read_expr,
})
}
#[allow(unreachable_code)]
fn binary_expr_item_struct(
cx: &ExtCtxt,
builder: &aster::AstBuilder,
_impl_generics: &ast::Generics,
ty: P<ast::Ty>,
span: Span,
variant_data: &ast::VariantData,
) -> Result<BinaryExpressions, Error> {
match *variant_data {
ast::VariantData::Tuple(ref fields, _) => {
binary_expr_struct(
cx,
&builder,
ty,
fields,
Some(builder.id("self")),
None,
)
},
ast::VariantData::Struct(ref fields, _) => {
binary_expr_struct(
cx,
&builder,
ty,
fields,
Some(builder.id("self")),
None,
)
},
_ => {
cx.span_bug(span,
&format!("#[derive(Binary)] Unsupported struct content, expected tuple/struct, found: {:?}",
variant_data));
Err(Error)
},
}
}
fn binary_expr_enum(
cx: &ExtCtxt,
builder: &aster::AstBuilder,
type_ident: Ident,
impl_generics: &ast::Generics,
ty: P<ast::Ty>,
span: Span,
enum_def: &ast::EnumDef,
) -> Result<BinaryExpressions, Error> {
let arms: Vec<_> = try!(
enum_def.variants.iter()
.enumerate()
.map(|(variant_index, variant)| {
binary_expr_variant(
cx,
builder,
type_ident,
impl_generics,
ty.clone(),
span,
variant,
variant_index,
)
})
.collect()
);
let (size_arms, write_arms, mut read_arms) = (
arms.iter().map(|x| x.size.clone()).collect::<Vec<ast::Arm>>(),
arms.iter().map(|x| x.write.clone()).collect::<Vec<ast::Arm>>(),
arms.iter().map(|x| x.read.clone()).collect::<Vec<ast::Arm>>());
read_arms.push(quote_arm!(cx, _ => { Err(BinaryConvertError) } ));
Ok(BinaryExpressions {
size: quote_expr!(cx, 1usize + match *self { $size_arms }),
write: quote_expr!(cx, match *self { $write_arms }; ),
read: quote_expr!(cx, match buffer[0] { $read_arms }),
})
}
struct BinaryArm {
size: ast::Arm,
write: ast::Arm,
read: ast::Arm,
}
fn fields_sequence(
ext_cx: &ExtCtxt,
_ty: &P<ast::Ty>,
fields: &[ast::StructField],
variant_ident: &ast::Ident,
) -> ast::Expr {
use syntax::parse::token;
use syntax::ast::TokenTree::Token;
::quasi::parse_expr_panic(&mut ::syntax::parse::new_parser_from_tts(
ext_cx.parse_sess(),
ext_cx.cfg(),
{
let _sp = ext_cx.call_site();
let mut tt = ::std::vec::Vec::new();
tt.push(Token(_sp, token::Ident(variant_ident.clone(), token::Plain)));
tt.push(Token(_sp, token::OpenDelim(token::Paren)));
for (idx, field) in fields.iter().enumerate() {
if field.ident.is_some() {
tt.push(Token(_sp, token::Ident(field.ident.clone().unwrap(), token::Plain)));
tt.push(Token(_sp, token::Colon));
}
tt.push(Token(_sp, token::Ident(ext_cx.ident_of("try!"), token::Plain)));
tt.push(Token(_sp, token::OpenDelim(token::Paren)));
tt.push(Token(
_sp,
token::Ident(
ext_cx.ident_of(&::syntax::print::pprust::ty_to_string(&field.ty)),
token::Plain)));
tt.push(Token(_sp, token::ModSep));
tt.push(Token(_sp, token::Ident(ext_cx.ident_of("from_bytes"), token::Plain)));
tt.push(Token(_sp, token::OpenDelim(token::Paren)));
tt.push(Token(_sp, token::BinOp(token::And)));
tt.push(Token(_sp, token::Ident(ext_cx.ident_of("buffer"), token::Plain)));
tt.push(Token(_sp, token::OpenDelim(token::Bracket)));
tt.push(Token(_sp, token::Ident(ext_cx.ident_of("map"), token::Plain)));
tt.push(Token(_sp, token::OpenDelim(token::Bracket)));
tt.push(Token(_sp, token::Ident(ext_cx.ident_of(&format!("{}", idx)), token::Plain)));
tt.push(Token(_sp, token::CloseDelim(token::Bracket)));
tt.push(Token(_sp, token::DotDot));
if idx+1 != fields.len() {
tt.push(Token(_sp, token::Ident(ext_cx.ident_of("map"), token::Plain)));
tt.push(Token(_sp, token::OpenDelim(token::Bracket)));
tt.push(Token(_sp, token::Ident(ext_cx.ident_of(&format!("{}", idx+1)), token::Plain)));
tt.push(Token(_sp, token::CloseDelim(token::Bracket)));
}
tt.push(Token(_sp, token::CloseDelim(token::Bracket)));
tt.push(Token(_sp, token::Comma));
tt.push(Token(_sp, token::Ident(ext_cx.ident_of("length_stack"), token::Plain)));
tt.push(Token(_sp, token::CloseDelim(token::Paren)));
tt.push(Token(_sp, token::CloseDelim(token::Paren)));
tt.push(Token(_sp, token::Comma));
}
tt.push(Token(_sp, token::CloseDelim(token::Paren)));
tt
})
).unwrap()
}
fn named_fields_sequence(
ext_cx: &ExtCtxt,
ty: &P<ast::Ty>,
fields: &[ast::StructField],
) -> ast::Stmt {
use syntax::parse::token;
use syntax::ast::TokenTree::Token;
::quasi::parse_stmt_panic(&mut ::syntax::parse::new_parser_from_tts(
ext_cx.parse_sess(),
ext_cx.cfg(),
{
let _sp = ext_cx.call_site();
let mut tt = ::std::vec::Vec::new();
tt.push(Token(_sp, token::Ident(ext_cx.ident_of("let"), token::Plain)));
tt.push(Token(_sp, token::Ident(ext_cx.ident_of("result"), token::Plain)));
tt.push(Token(_sp, token::Eq));
tt.push(Token(
_sp,
token::Ident(
ext_cx.ident_of(&::syntax::print::pprust::ty_to_string(ty)),
token::Plain)));
tt.push(Token(_sp, token::OpenDelim(token::Brace)));
for (idx, field) in fields.iter().enumerate() {
tt.push(Token(_sp, token::Ident(field.ident.clone().unwrap(), token::Plain)));
tt.push(Token(_sp, token::Colon));
tt.push(Token(_sp, token::Ident(ext_cx.ident_of("try!"), token::Plain)));
tt.push(Token(_sp, token::OpenDelim(token::Paren)));
tt.push(Token(
_sp,
token::Ident(
ext_cx.ident_of(&::syntax::print::pprust::ty_to_string(&field.ty)),
token::Plain)));
tt.push(Token(_sp, token::ModSep));
tt.push(Token(_sp, token::Ident(ext_cx.ident_of("from_bytes"), token::Plain)));
tt.push(Token(_sp, token::OpenDelim(token::Paren)));
tt.push(Token(_sp, token::BinOp(token::And)));
tt.push(Token(_sp, token::Ident(ext_cx.ident_of("buffer"), token::Plain)));
tt.push(Token(_sp, token::OpenDelim(token::Bracket)));
tt.push(Token(_sp, token::Ident(ext_cx.ident_of("map"), token::Plain)));
tt.push(Token(_sp, token::OpenDelim(token::Bracket)));
tt.push(Token(_sp, token::Ident(ext_cx.ident_of(&format!("{}", idx)), token::Plain)));
tt.push(Token(_sp, token::CloseDelim(token::Bracket)));
tt.push(Token(_sp, token::DotDot));
if idx + 1 != fields.len() {
tt.push(Token(_sp, token::Ident(ext_cx.ident_of("map"), token::Plain)));
tt.push(Token(_sp, token::OpenDelim(token::Bracket)));
tt.push(Token(_sp, token::Ident(ext_cx.ident_of(&format!("{}", idx+1)), token::Plain)));
tt.push(Token(_sp, token::CloseDelim(token::Bracket)));
}
tt.push(Token(_sp, token::CloseDelim(token::Bracket)));
tt.push(Token(_sp, token::Comma));
tt.push(Token(_sp, token::Ident(ext_cx.ident_of("length_stack"), token::Plain)));
tt.push(Token(_sp, token::CloseDelim(token::Paren)));
tt.push(Token(_sp, token::CloseDelim(token::Paren)));
tt.push(Token(_sp, token::Comma));
}
tt.push(Token(_sp, token::CloseDelim(token::Brace)));
tt
})
).unwrap()
}
fn binary_expr_variant(
cx: &ExtCtxt,
builder: &aster::AstBuilder,
type_ident: Ident,
_generics: &ast::Generics,
ty: P<ast::Ty>,
_span: Span,
variant: &ast::Variant,
variant_index: usize,
) -> Result<BinaryArm, Error> {
let variant_ident = variant.node.name;
let variant_index_ident = builder.id(format!("{}", variant_index));
match variant.node.data {
ast::VariantData::Unit(_) => {
let pat = builder.pat().path()
.id(type_ident).id(variant_ident)
.build();
let variant_val = builder.id(format!("{}::{}", type_ident, variant_ident));
Ok(BinaryArm {
size: quote_arm!(cx, $pat => { 0usize } ),
write: quote_arm!(cx, $pat => { buffer[0] = $variant_index_ident; Ok(()) } ),
read: quote_arm!(cx, $variant_index_ident => { Ok($variant_val) } ),
})
},
ast::VariantData::Tuple(ref fields, _) => {
let field_names: Vec<ast::Ident> = (0 .. fields.len())
.map(|i| builder.id(format!("__field{}", i)))
.collect();
let pat = builder.pat().enum_()
.id(type_ident).id(variant_ident).build()
.with_pats(
field_names.iter()
.map(|field| builder.pat().ref_id(field))
)
.build();
let binary_expr = try!(binary_expr_struct(
cx,
&builder,
ty,
fields,
None,
Some(builder.id(format!("{}::{}", type_ident, variant_ident))),
));
let (size_expr, write_expr, read_expr) = (binary_expr.size, vec![binary_expr.write], binary_expr.read);
Ok(BinaryArm {
size: quote_arm!(cx, $pat => { $size_expr } ),
write: quote_arm!(cx,
$pat => {
buffer[0] = $variant_index_ident;
let buffer = &mut buffer[1..];
$write_expr
}),
read: quote_arm!(cx, $variant_index_ident => { $read_expr } ),
})
},
ast::VariantData::Struct(ref fields, _) => {
let field_names: Vec<_> = (0 .. fields.len())
.map(|i| builder.id(format!("__field{}", i)))
.collect();
let pat = builder.pat().struct_()
.id(type_ident).id(variant_ident).build()
.with_pats(
field_names.iter()
.zip(fields.iter())
.map(|(id, field)|(field.ident.unwrap(), builder.pat().ref_id(id))))
.build();
let binary_expr = try!(binary_expr_struct(
cx,
&builder,
ty,
fields,
None,
Some(builder.id(format!("{}::{}", type_ident, variant_ident))),
));
let (size_expr, write_expr, read_expr) = (binary_expr.size, vec![binary_expr.write], binary_expr.read);
Ok(BinaryArm {
size: quote_arm!(cx, $pat => { $size_expr } ),
write: quote_arm!(cx,
$pat => {
buffer[0] = $variant_index_ident;
let buffer = &mut buffer[1..];
$write_expr
}),
read: quote_arm!(cx, $pat => { $read_expr } ),
})
},
}
}

3
ipc/codegen/src/typegen.rs
View File

@ -50,7 +50,8 @@ fn is_new_entry(path: &Path) -> Option<String> {
ident == "H256" ||
ident == "U256" ||
ident == "H2048" ||
ident == "Address"
ident == "Address" ||
ident == "Bytes"
}
};

1
ipc/rpc/Cargo.toml
View File

@ -10,3 +10,4 @@ license = "GPL-3.0"
ethcore-devtools = { path = "../../devtools" }
semver = "0.2.0"
nanomsg = { git = "https://github.com/ethcore/nanomsg.rs.git" }
ethcore-util = { path = "../../util" }

357
ipc/rpc/src/binary.rs Normal file
View File

@ -0,0 +1,357 @@
// Copyright 2015, 2016 Ethcore (UK) Ltd.
// This file is part of Parity.
// Parity is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Parity is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
//! Binary representation of types
use util::bytes::Populatable;
use std::mem;
use std::collections::VecDeque;
#[derive(Debug)]
pub struct BinaryConvertError;
pub trait BinaryConvertable : Sized {
fn size(&self) -> usize {
mem::size_of::<Self>()
}
fn to_bytes(&self, buffer: &mut [u8], length_stack: &mut VecDeque<usize>) -> Result<(), BinaryConvertError>;
fn from_bytes(buffer: &[u8], length_stack: &mut VecDeque<usize>) -> Result<Self, BinaryConvertError>;
fn from_empty_bytes() -> Result<Self, BinaryConvertError> {
Err(BinaryConvertError)
}
fn len_params() -> usize {
0
}
}
impl<T> BinaryConvertable for Option<T> where T: BinaryConvertable {
fn size(&self) -> usize {
match * self { None => 0, Some(ref val) => val.size() }
}
fn to_bytes(&self, buffer: &mut [u8], length_stack: &mut VecDeque<usize>) -> Result<(), BinaryConvertError> {
match *self { None => Err(BinaryConvertError), Some(ref val) => val.to_bytes(buffer, length_stack) }
}
fn from_bytes(buffer: &[u8], length_stack: &mut VecDeque<usize>) -> Result<Self, BinaryConvertError> {
Ok(Some(try!(T::from_bytes(buffer, length_stack))))
}
fn from_empty_bytes() -> Result<Self, BinaryConvertError> {
Ok(None)
}
fn len_params() -> usize {
1
}
}
impl<T> BinaryConvertable for Vec<T> where T: BinaryConvertable {
fn size(&self) -> usize {
match T::len_params() {
0 => mem::size_of::<T>() * self.len(),
_ => self.iter().fold(0usize, |acc, t| acc + t.size()),
}
}
fn to_bytes(&self, buffer: &mut [u8], length_stack: &mut VecDeque<usize>) -> Result<(), BinaryConvertError> {
let mut offset = 0usize;
for item in self.iter() {
let next_size = match T::len_params() {
0 => mem::size_of::<T>(),
_ => { let size = item.size(); length_stack.push_back(size); size },
};
if next_size > 0 {
let item_end = offset + next_size;
try!(item.to_bytes(&mut buffer[offset..item_end], length_stack));
offset = item_end;
}
}
Ok(())
}
fn from_bytes(buffer: &[u8], length_stack: &mut VecDeque<usize>) -> Result<Self, BinaryConvertError> {
let mut index = 0;
let mut result = Self::with_capacity(
match T::len_params() {
0 => buffer.len() / mem::size_of::<T>(),
_ => 128,
});
loop {
let next_size = match T::len_params() {
0 => mem::size_of::<T>(),
_ => try!(length_stack.pop_front().ok_or(BinaryConvertError)),
};
let item = if next_size == 0 {
try!(T::from_empty_bytes())
}
else {
try!(T::from_bytes(&buffer[index..index+next_size], length_stack))
};
result.push(item);
index = index + next_size;
if index == buffer.len() { break; }
if index > buffer.len() {
return Err(BinaryConvertError)
}
}
Ok(result)
}
fn from_empty_bytes() -> Result<Self, BinaryConvertError> {
Ok(Self::new())
}
fn len_params() -> usize {
1
}
}
pub fn deserialize_from<T, R>(r: &mut R) -> Result<T, BinaryConvertError>
where R: ::std::io::Read,
T: BinaryConvertable
{
let mut fake_stack = VecDeque::new();
let mut length_stack = VecDeque::<usize>::new();
let mut size_buffer = [0u8; 8];
try!(r.read(&mut size_buffer[..]).map_err(|_| BinaryConvertError));
let stack_len = try!(u64::from_bytes(&mut size_buffer[..], &mut fake_stack)) as usize;
if stack_len > 0 {
let mut header_buffer = Vec::with_capacity(stack_len * 8);
unsafe { header_buffer.set_len(stack_len * 8); };
try!(r.read(&mut header_buffer[..]).map_err(|_| BinaryConvertError));
for idx in 0..stack_len {
let stack_item = try!(u64::from_bytes(&header_buffer[idx*8..(idx+1)*8], &mut fake_stack));
length_stack.push_back(stack_item as usize);
}
}
try!(r.read(&mut size_buffer[..]).map_err(|_| BinaryConvertError));
let size = try!(u64::from_bytes(&size_buffer[..], &mut fake_stack)) as usize;
let mut data = Vec::with_capacity(size);
unsafe { data.set_len(size) };
try!(r.read(&mut data).map_err(|_| BinaryConvertError));
T::from_bytes(&data[..], &mut length_stack)
}
pub fn serialize_into<T, W>(t: &T, w: &mut W) -> Result<(), BinaryConvertError>
where W: ::std::io::Write,
T: BinaryConvertable
{
let mut length_stack = VecDeque::<usize>::new();
let mut fake_stack = VecDeque::new();
let mut size_buffer = [0u8; 8];
let size = t.size();
let mut buffer = Vec::with_capacity(size);
unsafe { buffer.set_len(size); }
try!(t.to_bytes(&mut buffer[..], &mut length_stack));
let stack_len = length_stack.len();
try!((stack_len as u64).to_bytes(&mut size_buffer[..], &mut fake_stack));
try!(w.write(&size_buffer[..]).map_err(|_| BinaryConvertError));
if stack_len > 0 {
let mut header_buffer = Vec::with_capacity(stack_len * 8);
unsafe { header_buffer.set_len(stack_len * 8); };
try!((stack_len as u64).to_bytes(&mut header_buffer[0..8], &mut fake_stack));
let mut idx = 0;
loop {
match length_stack.pop_front() {
Some(val) => try!((val as u64).to_bytes(&mut header_buffer[idx * 8..(idx+1) * 8], &mut fake_stack)),
None => { break; }
}
idx = idx + 1;
}
try!(w.write(&header_buffer[..]).map_err(|_| BinaryConvertError));
}
try!((size as u64).to_bytes(&mut size_buffer[..], &mut fake_stack));
try!(w.write(&size_buffer[..]).map_err(|_| BinaryConvertError));
try!(w.write(&buffer[..]).map_err(|_| BinaryConvertError));
Ok(())
}
macro_rules! binary_fixed_size {
($target_ty: ident) => {
impl BinaryConvertable for $target_ty {
fn from_bytes(bytes: &[u8], _length_stack: &mut VecDeque<usize>) -> Result<Self, BinaryConvertError> {
match bytes.len().cmp(&::std::mem::size_of::<$target_ty>()) {
::std::cmp::Ordering::Less => return Err(BinaryConvertError),
::std::cmp::Ordering::Greater => return Err(BinaryConvertError),
::std::cmp::Ordering::Equal => ()
};
let mut res: Self = unsafe { ::std::mem::uninitialized() };
res.copy_raw(bytes);
Ok(res)
}
fn to_bytes(&self, buffer: &mut [u8], _length_stack: &mut VecDeque<usize>) -> Result<(), BinaryConvertError> {
let sz = ::std::mem::size_of::<$target_ty>();
let ip: *const $target_ty = self;
let ptr: *const u8 = ip as *const _;
unsafe {
::std::ptr::copy(ptr, buffer.as_mut_ptr(), sz);
}
Ok(())
}
}
}
}
binary_fixed_size!(u64);
binary_fixed_size!(u32);
binary_fixed_size!(bool);
#[test]
fn vec_serialize() {
let mut v = Vec::new();
v.push(5u64);
v.push(10u64);
let mut length_stack = VecDeque::new();
let mut data = Vec::with_capacity(v.size());
unsafe { data.set_len(v.size()); }
let result = v.to_bytes(&mut data[..], &mut length_stack);
assert!(result.is_ok());
assert_eq!(5, data[0]);
assert_eq!(0, data[1]);
assert_eq!(10, data[8]);
assert_eq!(0, data[12]);
}
#[test]
fn calculates_size() {
let mut v = Vec::new();
v.push(5u64);
v.push(10u64);
assert_eq!(16, v.size());
}
#[test]
fn vec_deserialize() {
let data = [
10u8, 0u8, 0u8, 0u8, 0u8, 0u8, 0u8, 0u8,
5u8, 0u8, 0u8, 0u8, 0u8, 0u8, 0u8, 0u8,
];
let mut length_stack = VecDeque::new();
let vec = Vec::<u64>::from_bytes(&data[..], &mut length_stack).unwrap();
assert_eq!(vec![10u64, 5u64], vec);
}
#[test]
fn vec_deserialize_chained() {
let mut v = Vec::new();
v.push(Some(5u64));
v.push(Some(10u64));
v.push(None);
v.push(Some(12u64));
let mut length_stack = VecDeque::new();
let mut data = Vec::with_capacity(v.size());
unsafe { data.set_len(v.size()); }
let result = v.to_bytes(&mut data[..], &mut length_stack);
assert!(result.is_ok());
assert_eq!(4, length_stack.len());
}
#[test]
fn vec_serialize_deserialize() {
let mut v = Vec::new();
v.push(Some(5u64));
v.push(None);
v.push(Some(10u64));
v.push(None);
v.push(Some(12u64));
let mut data = Vec::with_capacity(v.size());
unsafe { data.set_len(v.size()); }
let mut length_stack = VecDeque::new();
v.to_bytes(&mut data[..], &mut length_stack).unwrap();
let de_v = Vec::<Option<u64>>::from_bytes(&data[..], &mut length_stack).unwrap();
assert_eq!(v, de_v);
}
#[test]
fn serialize_into_ok() {
use std::io::Cursor;
let mut buff = Cursor::new(vec![0; 128]);
let mut v = Vec::new();
v.push(Some(5u64));
v.push(None);
v.push(Some(10u64));
v.push(None);
v.push(Some(12u64));
serialize_into(&v, &mut buff).unwrap();
assert_eq!(5, buff.get_ref()[0]);
assert_eq!(8, buff.get_ref()[8]);
assert_eq!(0, buff.get_ref()[16]);
assert_eq!(8, buff.get_ref()[24]);
}
#[test]
fn deserialize_from_ok() {
use std::io::Cursor;
let mut buff = Cursor::new(vec![
0u8, 0u8, 0u8, 0u8, 0u8, 0u8, 0u8, 0u8,
16u8, 0u8, 0u8, 0u8, 0u8, 0u8, 0u8, 0u8,
10u8, 0u8, 0u8, 0u8, 0u8, 0u8, 0u8, 0u8,
5u8, 0u8, 0u8, 0u8, 0u8, 0u8, 0u8, 0u8,
]);
let vec = deserialize_from::<Vec<u64>, _>(&mut buff).unwrap();
assert_eq!(vec![10u64, 5u64], vec);
}
#[test]
fn serialize_into_deserialize_from() {
use std::io::{Cursor, SeekFrom, Seek};
let mut buff = Cursor::new(vec![0u8; 1024]);
let mut v = Vec::new();
v.push(Some(5u64));
v.push(None);
v.push(Some(10u64));
v.push(None);
v.push(Some(12u64));
serialize_into(&v, &mut buff).unwrap();
buff.seek(SeekFrom::Start(0)).unwrap();
let de_v = deserialize_from::<Vec<Option<u64>>, _>(&mut buff).unwrap();
assert_eq!(v, de_v);
}

3
ipc/rpc/src/lib.rs
View File

@ -19,6 +19,9 @@
extern crate ethcore_devtools as devtools;
extern crate semver;
extern crate nanomsg;
extern crate ethcore_util as util;
pub mod interface;
pub mod binary;
pub use interface::{IpcInterface, IpcSocket, invoke, IpcConfig, Handshake, Error, WithSocket};
pub use binary::{BinaryConvertable, BinaryConvertError};

19
ipc/tests/binary.rs Normal file
View File

@ -0,0 +1,19 @@
// Copyright 2015, 2016 Ethcore (UK) Ltd.
// This file is part of Parity.
// Parity is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Parity is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
#![allow(dead_code, unused_assignments, unused_variables)] // codegen issues
include!(concat!(env!("OUT_DIR"), "/binary.rs"));

38
ipc/tests/binary.rs.in Normal file
View File

@ -0,0 +1,38 @@
// Copyright 2015, 2016 Ethcore (UK) Ltd.
// This file is part of Parity.
// Parity is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Parity is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
use ipc::*;
use std::mem;
use std::collections::VecDeque;
#[derive(Binary)]
pub enum Root {
Top,
Middle(u32, u64),
}
#[derive(Binary, PartialEq, Debug)]
pub struct DoubleRoot {
pub x1: u32,
pub x2: u64,
pub x3: u32,
}
#[derive(Binary, PartialEq, Debug)]
pub struct ReferenceStruct<'a> {
pub ref_data: &'a u64,
}

9
ipc/tests/build.rs
View File

@ -60,4 +60,13 @@ pub fn main() {
registry.expand("", &src, &dst).unwrap();
}
// ipc pass
{
let src = Path::new("binary.rs.in");
let dst = Path::new(&out_dir).join("binary.rs");
let mut registry = syntex::Registry::new();
codegen::register(&mut registry);
registry.expand("", &src, &dst).unwrap();
}
}

16
ipc/tests/examples.rs
View File

@ -18,6 +18,7 @@
mod tests {
use super::super::service::*;
use super::super::binary::*;
use super::super::nested::{DBClient,DBWriter};
use ipc::*;
use devtools::*;
@ -143,4 +144,19 @@ mod tests {
assert!(result.is_ok());
}
#[test]
fn can_serialize_dummy_structs() {
let mut socket = TestSocket::new();
let struct_ = DoubleRoot { x1: 0, x2: 100, x3: 100000};
let res = ::ipc::binary::serialize_into(&struct_, &mut socket);
assert!(res.is_ok());
let mut read_socket = TestSocket::new_ready(socket.write_buffer.clone());
let new_struct: DoubleRoot = ::ipc::binary::deserialize_from(&mut read_socket).unwrap();
assert_eq!(struct_, new_struct);
}
}

1
ipc/tests/run.rs
View File

@ -29,3 +29,4 @@ pub mod service;
mod examples;
mod over_nano;
mod nested;
mod binary;