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Commit fb738875 authored by Zach Johnson's avatar Zach Johnson Committed by Automerger Merge Worker
Browse files

Merge changes Icc40d3d8,I241bcf4e,I9406eb11,I8dea0a13,Ib4a05164, ... am:... 

Merge changes Icc40d3d8,I241bcf4e,I9406eb11,I8dea0a13,Ib4a05164, ... am: 8d77e76d am: fd1e1cab am: 1a3c3625

Original change: https://android-review.googlesource.com/c/platform/system/bt/+/1527184

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I032415d6b3716139981f20192de9628517b540c4
parents 34755c12 1a3c3625

system/gd/packet/parser/gen_rust.cc

+1 −0
Original line number Diff line number Diff line
@@ -27,6 +27,7 @@ use num_derive::{FromPrimitive, ToPrimitive}; 
use num_traits::FromPrimitive;

use std::convert::TryInto;

use thiserror::Error;

use std::rc::Rc;



type Result<T> = std::result::Result<T, Error>;

system/gd/packet/parser/packet_def.cc

+112 −17
Original line number Diff line number Diff line
@@ -742,6 +742,11 @@ void PacketDef::GenBuilderConstructor(std::ostream& s) const { 


void PacketDef::GenRustChildEnums(std::ostream& s) const {

  if (!children_.empty()) {

    s << "enum " << name_ << "DataChild {";

    for (const auto& child : children_) {

      s << child->name_ << "(Rc<" << child->name_ << "Data>),";

    }

    s << "}\n";

    s << "pub enum " << name_ << "Child {";

    for (const auto& child : children_) {

      s << child->name_ << "(" << child->name_ << "Packet),";
@@ -751,10 +756,13 @@ void PacketDef::GenRustChildEnums(std::ostream& s) const { 
}



void PacketDef::GenRustStructDeclarations(std::ostream& s) const {

  s << "pub struct " << name_ << "Packet {";

  s << "struct " << name_ << "Data {";



  // Generate struct fields

  GenRustStructFieldNameAndType(s);

  if (!children_.empty()) {

    s << "child: " << name_ << "DataChild,";

  }



  // Generate size field

  auto fields = fields_.GetFieldsWithoutTypes({
@@ -767,6 +775,15 @@ void PacketDef::GenRustStructDeclarations(std::ostream& s) const { 
    s << " size: usize";

  }

  s << "}\n";



  s << "pub struct " << name_ << "Packet {";

  auto lineage = GetAncestors();

  lineage.push_back(this);

  for (auto it = lineage.begin(); it != lineage.end(); it++) {

    auto def = *it;

    s << util::CamelCaseToUnderScore(def->name_) << ": Rc<" << def->name_ << "Data>,";

  }

  s << "}\n";

}



bool PacketDef::GenRustStructFieldNameAndType(std::ostream& s) const {
@@ -776,6 +793,7 @@ bool PacketDef::GenRustStructFieldNameAndType(std::ostream& s) const { 
      PaddingField::kFieldType,

      ReservedField::kFieldType,

      SizeField::kFieldType,

      PayloadField::kFieldType,

  });

  if (fields.size() == 0) {

    return false;
@@ -794,6 +812,7 @@ void PacketDef::GenRustStructFieldNames(std::ostream& s) const { 
      PaddingField::kFieldType,

      ReservedField::kFieldType,

      SizeField::kFieldType,

      PayloadField::kFieldType,

  });

  for (int i = 0; i < fields.size(); i++) {

    s << fields[i]->GetName();
@@ -817,23 +836,24 @@ void PacketDef::GenRustStructSizeField(std::ostream& s) const { 
}



void PacketDef::GenRustStructImpls(std::ostream& s) const {

  s << "impl " << name_ << "Packet {";

  s << "pub fn new(";

  s << "impl " << name_ << "Data {";

  s << "fn new(";

  bool fields_exist = GenRustStructFieldNameAndType(s);

  s << ") -> Self { Self {";

  s << ") -> Self { unimplemented!();"; /* Self {";

  GenRustStructFieldNames(s);

  if (fields_exist) {

    GenRustStructSizeField(s);

  }

  s << "}}";

  s << "}*/

  s << "}";



  // parse function

  s << "pub fn parse(bytes: &[u8]) -> Result<Self> {";

  s << "fn parse(bytes: &[u8]) -> Result<Self> { unimplemented!();";

  auto fields = fields_.GetFieldsWithoutTypes({

      BodyField::kFieldType,

  });



  for (auto const& field : fields) {

  /*for (auto const& field : fields) {

    auto start_field_offset = GetOffsetForField(field->GetName(), false);

    auto end_field_offset = GetOffsetForField(field->GetName(), true);
@@ -852,6 +872,7 @@ void PacketDef::GenRustStructImpls(std::ostream& s) const { 
      PaddingField::kFieldType,

      ReservedField::kFieldType,

      SizeField::kFieldType,

      PayloadField::kFieldType,

  });



  if (fields_exist) {
@@ -862,16 +883,8 @@ void PacketDef::GenRustStructImpls(std::ostream& s) const { 
    }

    GenRustStructSizeField(s);

  }

  s << "})}\n";



  // to_bytes function (only on root packet types)

  if (parent_ == nullptr) {

    s << "fn to_bytes(self) -> Bytes {";

    s << " let mut buffer = BytesMut::new();";

    s << " self.write_to(&mut buffer);";

    s << " buffer.freeze()";

  s << "})}\n";*/

  s << "}\n";

  }



  // write_to function

  s << "fn write_to(&self, buffer: &mut BytesMut) {";
@@ -907,8 +920,90 @@ void PacketDef::GenRustStructImpls(std::ostream& s) const { 
  s << "}\n";

}



void PacketDef::GenRustAccessStructImpls(std::ostream& s) const {

  s << "impl " << name_ << "Packet {";

  if (parent_ == nullptr) {

    s << "pub fn parse(bytes: &[u8]) -> Result<Self> { ";

    s << "Ok(Self::new(Rc::new(" << name_ << "Data::parse(bytes)?)))";

    s << "}";

  }

  auto root = GetRootDef();

  auto root_accessor = util::CamelCaseToUnderScore(root->name_);



  s << "pub fn to_bytes(self) -> Bytes {";

  s << " let mut buffer = BytesMut::new();";

  s << " self." << root_accessor << ".write_to(&mut buffer);";

  s << " buffer.freeze()";

  s << "}\n";



  if (!children_.empty()) {

    s << " pub fn specialize(self) -> " << name_ << "Child {";

    s << " match self." << util::CamelCaseToUnderScore(name_) << ".child {";

    for (const auto& child : children_) {

      s << name_ << "DataChild::" << child->name_ << "(_) => " << name_ << "Child::" << child->name_ << "("

        << child->name_ << "Packet::new(self." << root_accessor << ")),";

    }

    s << "}}";

  }

  auto lineage = GetAncestors();

  lineage.push_back(this);

  const ParentDef* prev = nullptr;



  s << " fn new(root: Rc<" << root->name_ << "Data>) -> Self {";

  for (auto it = lineage.begin(); it != lineage.end(); it++) {

    auto def = *it;

    auto accessor_name = util::CamelCaseToUnderScore(def->name_);

    if (prev == nullptr) {

      s << "let " << accessor_name << " = root;";

    } else {

      s << "let " << accessor_name << " = match &" << util::CamelCaseToUnderScore(prev->name_) << ".child {";

      s << prev->name_ << "DataChild::" << def->name_ << "(value) => (*value).clone(),";

      s << "_ => panic!(\"inconsistent state - child was not " << def->name_ << "\"),";

      s << "};";

    }

    prev = def;

  }

  s << "Self {";

  for (auto it = lineage.begin(); it != lineage.end(); it++) {

    auto def = *it;

    s << util::CamelCaseToUnderScore(def->name_) << ",";

  }

  s << "}}";



  for (auto it = lineage.begin(); it != lineage.end(); it++) {

    auto def = *it;

    auto fields = def->fields_.GetFieldsWithoutTypes({

        BodyField::kFieldType,

        CountField::kFieldType,

        PaddingField::kFieldType,

        ReservedField::kFieldType,

        SizeField::kFieldType,

        PayloadField::kFieldType,

    });



    for (auto const& field : fields) {

      s << "pub fn get_" << field->GetName() << "(&self) -> &" << field->GetRustDataType() << "{";

      s << " &self." << util::CamelCaseToUnderScore(def->name_) << ".as_ref()." << field->GetName();

      s << "}\n";

    }

  }



  s << "}\n";



  lineage = GetAncestors();

  for (auto it = lineage.begin(); it != lineage.end(); it++) {

    auto def = *it;

    s << "impl Into<" << def->name_ << "Packet> for " << name_ << "Packet {";

    s << " fn into(self) -> " << def->name_ << "Packet {";

    s << def->name_ << "Packet::new(self." << util::CamelCaseToUnderScore(root->name_) << ")";

    s << " }";

    s << "}\n";

  }

}



void PacketDef::GenRustDef(std::ostream& s) const {

  GenRustChildEnums(s);

  GenRustStructDeclarations(s);

  GenRustStructImpls(s);

  GenRustAccessStructImpls(s);

}

system/gd/packet/parser/packet_def.h

+2 −0
Original line number Diff line number Diff line
@@ -77,5 +77,7 @@ class PacketDef : public ParentDef { 


  void GenRustStructImpls(std::ostream& s) const;



  void GenRustAccessStructImpls(std::ostream& s) const;



  void GenRustDef(std::ostream& s) const;

};

system/gd/packet/parser/parent_def.cc

+19 −0
Original line number Diff line number Diff line
@@ -482,3 +482,22 @@ void ParentDef::GenInstanceOf(std::ostream& s) const { 
    s << "return true;}";

  }

}



const ParentDef* ParentDef::GetRootDef() const {

  if (parent_ == nullptr) {

    return this;

  }



  return parent_->GetRootDef();

}



std::vector<const ParentDef*> ParentDef::GetAncestors() const {

  std::vector<const ParentDef*> res;

  auto parent = parent_;

  while (parent != nullptr) {

    res.push_back(parent);

    parent = parent->parent_;

  }

  std::reverse(res.begin(), res.end());

  return res;

}

system/gd/packet/parser/parent_def.h

+4 −0
Original line number Diff line number Diff line
@@ -61,6 +61,10 @@ class ParentDef : public TypeDef { 


  void GenInstanceOf(std::ostream& s) const;



  const ParentDef* GetRootDef() const;



  std::vector<const ParentDef*> GetAncestors() const;



  FieldList fields_;



  ParentDef* parent_{nullptr};