* [lang2] initial commit of ink! lang2 frontend

This is going to be the frontend for the new ink! syntax.

* [lang2] change version syntax to semantic versioning string

* [lang2] add failure test for invalid semantic version string

* [lang2] fix some unused warnings

* [lang2] change lib name to ink_lang2

* [lang2] add span to ir::data::ItemStorage

* [lang2] modernize env types codegen

* [lang2] re-introduce entry points codegen but without body for now

* [lang2] add initial storage struct codegen

* [lang2] add lang2 flipper contract example for testing purposes

* [core] impl env2::EnvTypes for DefaultSrmlTypes instead of old env::EnvTypes

* [lang2] add `0` body to entry points

* [lang2] mark fn allocate_using impl for storage struct as unsafe

* [lagn2] ignore args in Initialize::initialize impl for storage struct

* [lang2] adjust compiletests

* [core] add emit_event to EnvAccess{Mut}

* [lang2] add codegen for contract functions

* [lang2] add Signature::inputs

* [lang2] adjust and modernize compiletests

* [lang2] apply rustfmt

* [core] add generic Encode param to EmitEventParams

* [cli] bump version 0.1.1 -> 0.1.2

* [core] make it possible to use EnvAccess{Mut} directly in storage

* [core] make Selector::{from_bytes, to_bytes} const fn

* [core] add check to Decode impl for CallData

* [core] add #[inline..] annotations to some public trait impls

* [lang2] move lang2 into lang2_macro and create new lang2 helper crate

* [examples] add initial core/flipper example that acts as codegen prototype

* [core] add some more #[inline..] annotations

* [lang2] split DerefEnv into AccessEnv{Mut} and losen direct trait bounds

* [core] add efficient conversion from DynEnv<EnvAccessMut> to DynEnv<EnvAccess>

* [examples] adjust core::Flipper prototype to newest state

* [core] add env accessors to DynEnv

* [lang2] add AccessEnv{Mut} impls for DynEnv and EnvAccess{Mut}

* [lang2] use double AccessEnv trait indirection in dispatch fns

* [examples] core::flipper: add ink-dyn-alloc crate feature

Enable this to enable dynamic storage allocation for your contract.
Dynamic storage allocation is an optional drop-in feature.

* [lang2] make LICENSE and README.md sym links

* [lang2-macro] replace LICENSE and README.md with sym links

* [lang2] add access_env sub module

* [lang2] simplify Message trait concept for constructors

* [lang2] add more general error codes

* [lang2] add storage sub module

* [lang2] remove old dispatch sub module

* [lang2] implement new dispatcher based on ink_model v2

* [examples] adjust core flipper example for new codegen

* [lang2] remove some commented out code

* [lang2] rename dispatch2 to dispatch_using_mode

* [lang2] fix doc link in DispatchMode docs

* [examples] adjust core::Flipper to better reflect codegen prototype

* [lang2] rename ContractDispatch to DispatchUsingMode and add docs

* [lang2] remove unused ContractInstance trait

* [lang2] remove unneeded Msg and Constr utility types

Those types should solely be provided by the contracts themselves.
They act as namespaces for the respective message type.

* [lang2/macro] add GenerateCodeUsing trait

* [example] add explanation docs to the Flipper::get(&mut self) method

* [lang2] fix unused warning

* [lang2/macro] refactor codegen module

* [lang2/macro] remove commented-out code

* [core] add EnvAccess to allow universal usage of EnvAccess

* [lang2] no longer require separate storage structs

* [examples] adjust core/Flipper to newest ink_lang2 and ink_core changes

* [examples] remove as much direct Flipper usages as possible

* [lang2/macro] temporarily disable dispatch codegen

* [lang2/macro] add MetaInfo::is_dynamic_allocation_enabled stub

* [lang2/macro] implement initial storage codegen

* [core] remove DynEnvAccess and DynEnvAccessMut

No longer needed!

* [core] implement AccessEnv for &'a {mut} DynEnv<EnvAccess{Mut}>

* [examples] fix implementation of ink_lang2::AccesEnv for StorageAndEnv

* [examples] fix ink_core::env2::AccessEnv impl for StorageAndEnv

* [examples] move deploy and call fns into dispatch const block

* [examples] convert docs to comments because they screw up cargo expand

* [lang2/macro] remove ink_model dependency

* [lang2] fix some minor warnings and issues

* [lang2/macro] fix codegen of ink_core::env2::AccessEnv impls

* [lang2/macro] refactor and improve FunctionSelector implementation

* [lang2/macro] Signature::inputs now returns an iterator over IdentType

Was returning an iterator over FnArg before but conversion is trivial.

* [lang2/macro] add dispatch codegen

* [examples] fix DefaultSrmlTypes usage in lang2/Flipper

* [core] prepare env2 to be used with ABI generation purposes

* [examples] add ABI generation to core/Flipper

This will serve as a prototype for ink_lang2 codegen.

* [core, model] remove unneeded warnings/lints

* [lang2] make calls to AccessEnv and Flush more explicit

* [lang2/macro] no longer use no-default-features for dev-dependencies

* [lang2/macro] surpress warnings of unused imports for core::env2::AccessEnv

* [lang2/macro] fix codegen of {ink_lang2/core::env2}::AccessEnv impls

* [lang2/macro] remove unused let binding (was commented out anyways)

* [lang2/macro] fix several codegen bugs

* [examples] remove ink_model and ink_lang dependencies of lang2/Flipper

* [examples] add contract and layout bindings type annotation

* [lang2/macro] adjust some passing tests

* [lang2] add GenerateAbi trait guarded by ink-generate-abi crate feature

* [lang2/macro] move scale dependency away from ink dependencies in Cargo.toml

* [lang2/macro] add Metadata and HasLayout derives to storage structs

* [lang2/macro] insert minor whitespace between bindings and quote

* [lang2/macro] add abi module to generate ABI generating code

* [lang2/macro] add Function::{filter_constructor, filter_message}

* [lang2/macro] fix bug that non-ink! filter for attributes was off

* [lang2/macro] make use of iterative array quoting in Dispatch codegen

* [lang2/macro] add utility to filter doc attributes and parse them to readable string

* [lang2/macro] add codegen for ABI generation

* [example] adjust lang2/Flipper abi-gen package

* [lang2/macro] ink::contract params adjustments

- make `env` param default to ink_core::env2::DefaultSrmlTypes
- add `dynamic_allocations = {true|false}`, default: false
- add `compile_as_dependency = {true|false}`, default: false

* [lang2/macro] adjust passing tests to new contract params

* [examples] adjust lang2/Flipper to new contract params

We enable dynamic_allocations for now since disabling it causes other errors.

* [lang2/macro] add different HasLayout impl for dynamic_allocations {true|false}

* [examples] lang2/Flipper no longer requires dynamic_allocations = true

* [lang2] rename AccessEnv::env to AccessEnv::access_env

This helps to disambiguate certain other `env` methods and trait impls

* [examples] adjust core/Flipper example

* [core] refactor event emitting interfaces in env2

* [examples] core/Flipper: fix env types aliases

* [examples] core/Flipper: adjust to new event emitting

Also:
- messages and constructors no longer can access private fields from StorageAndEnv
- rename __ink_storage to __ink_private
- add __ink_events module in __ink_private defining all events and utilities
- general rust formatting

* [core] add EmitEvent utility trait

This allow to disambiguate the contract's provided EmitEvent trait

* [examples] core/Flipper: make it impossible to ambiguate emitting of events

* [lang2/macro] rename contract_module.rs to contract.rs

* [lang2/macro] generated messages and constructors can no longer access internals of StorageAndEnv

* [lang2/macro] apply rustfmt

* [lang2/macro] add event codegen

- ABI generation codegen for events is still missing

* [lang2/macro] adjust some pass UI tests to new event codegen

* [lang2/macro] re-export the contract on crate root again

This is done for ABI creation since otherwise the abi-gen tool couldn't access the data.

* [lang2/macro] add ABI generation for events

* [lang2/macro] add Erc721 UI pass test

* [lang2/macro] add missing codegen for ABI event args docs

* [lang2/macro] fix a bug that ABI codegen would always impl GenerateAbi for Flipper

* [lang2/macro] add derive(Metadata) to Error enum for Erc721 test

* [core] add missing Initialize::default_value impls

* [core] add Debug impls for some env types

* [examples] core/Flipper: add code to allow for offchain testability

* [examples] core/Flipper: add error handling for test env init

* [lang2/macro] add docs to ABI generation of event args

* [examples] core/Flipper: adjust to improve testability

- No longer requires <Flipper as Testable>::constructor
- packs whole of flipper contract in associated flipper module such as what ink_lang2 does

* [lang2/macro] add filter_ink_attributes and has_ink_attributes to utilities

* [lang2/macro] re-export utils from ir

* [lang2/macro] add ir::utils::is_ink_attribute

* [lang2/macro] allow non-ink! items in the contract module

* [lang2/macro] add test for non-ink! module items

* [lang2/macro] apply rustfmt on UI tests

* [lang2/macro] fix 02 ui fail test

* [lang2/macro] generate code for non-ink! module items

* [lang2/macro] move utilities inside the contract module - because we can!!

* [lang2/macro] adjust compile tests for most recent changes

* [lang2/macro] add compile test for missing messages

* [lang2/macro] fix some minor warnings

* [lang2/macro] add a lint to check if all identifiers respect not starting with __ink

* [lang2/macro] add simple test for __ink starting identifiers lint

* [lang2/macro] update docs of idents_respect_pred

* [lang2] apply rustfmt

* [core] apply rustfmt to env2 module

* [lang2/macro] add ir::utils::filter_non_ink_attributes

* [lang2/macro] make use or ir::utils::filter_non_ink_attributes

* [lang2/macro] re-export contract on crate root only for ABI generation

* [lang2/macro] documented code generation principles

* [examples] add Erc20 token example for lang2

* [lang2/macro] refactor event codegen

* [lang2/macro] move dispatch codegen into __ink_private

This hides `Msg` and `Constr` namespaces into __ink_private.

* [lang2/macro] move ABI generation codegen into __ink_private

* [lang2/macro] add test to forbig accessing generated storage fields

* [lang2/macro] extend test to forbig accessing generated storage fields

* [lang2] implement testable contracts codegen

* [lang2/macro] do not generate dispatch code for tests or if `test-env` is enabled

* [examples] lang2/Flipper: add contract tests

* [lang2/macro] add simple tests to flipper test

* [examples] remove core/Flipper example again

This was decided after we felt that maintaining it was more of a burden than it being a help for further development.

* [lang2/macro] apply rustfmt

* [core] refactor env2 cross-calling infrastructure

* [core] move seals into utils

* [examples] lang2/Flipper: add default_works test

* [lang2/macro] add cross-contract calling

* [lang2/macro] add cross-contract calling test

* [lang2] remove CreateForwarder infrastructure since unneeded

* [lang2/macro] do not generate code for Events when compiled as dependency

* [lang2/macro] remove strange semi-comments in Msg and Constr

* [lang2/macro] add Debug derive to StorageAsDependency

* [examples] add Delegator contract based on ink_lang2

* [core] guard calling CreateBuilder::using_code at compile-time

* [lang2] fix some clippy warnings

* [chores] update README

* [lang2/macro] refactor into_hir: use ir types through ir module

* fix typo

Co-Authored-By: Michael Müller <mich@elmueller.net>

* fix typo in lang2/macro/src/ir/into_hir.rs

Co-Authored-By: Michael Müller <mich@elmueller.net>

* fix typo in examples/lang2/delegator/adder/lib.rs

Co-Authored-By: Michael Müller <mich@elmueller.net>

* fix typo in lang2/macro/src/codegen/cross_calling.rs

Co-Authored-By: Michael Müller <mich@elmueller.net>

* fix typo in core/src/env2/traits.rs

Co-Authored-By: Michael Müller <mich@elmueller.net>

* fix typo in lang2/macro/src/codegen/contract.rs

Co-Authored-By: Michael Müller <mich@elmueller.net>

* [lang2/macro] improve some ink! error messages

* [lang2/macro] remove commented-out code

* fix typo in lang2/macro/src/codegen/dispatch.rs

Co-Authored-By: Michael Müller <mich@elmueller.net>

* [lang2/macro] remove ancient Cargo.toml artifacts

* [examples] fix typo and enhance delegator docs a bit

* use `#!/usr/bin/env` instead of `#!/bin/bash`

Co-Authored-By: Michael Müller <mich@elmueller.net>

* [lang2] apply rustfmt

* [core] env2: apply rustfmt

* [cli] adjust CLI to generate ink_lang2 contract upon new command

* [lang2/macro] generate some #[inline] annotations on some generated cross-calling interfaces

* [examples] improve Delegator example slightly

* [core] fix bug that SrmlEnv tried to impl traits for TestEnv

* [examples] fix bug that .ink/abi_gen was using incorrect crate features

* [cli,examples] fix all abi_gen/Cargo.toml files

* [examples] fix bugs in some examples

* [lang2/macro] suppress some unused_parens warnings

* [examples] add incrementer as lang2 example

* [lang2/macro] make codegen more precise when using traits

* [lang2/macro] "fix" a bug in cross-calling codegen

The fix is actually a hack that we should remove again as soon as possible by a proper solution.

* [core] rename ext_create to ext_instantiate

* [examples] lang2/Delegator: fix some warnings and added Delegator::get

* [examples] lang2/Erc20: add Erc20::allowance

* [core] fix bug in executing ext::scratch_read causing panic

* [core] remove unused println statements in tests

* [examples] delegator: minor improvements

* [core] add initial call builder implementation

* [core] add setters to CallBuilder

* [core] fix invalid mod import in no_std

* [lang] initial remote call implementation for ink_lang

* [examples] add ink-as-dependency crate feature to erc20 token contract

* [core] move calls and call error definitions

* [core] add ext_create support

* [*] apply rustfmt

* [core] expose ReturnType publicly

* [core] add ext_create impl on the SRML interfacing side

* [core] fix minor invalid module import

* [lang] split CallEnhancer into mut and immutable versions

* [lang] forward to call enhancers from short-version of remote calling

* [core] improve create builder to return the contract directly

* [lang] simplify env types code generation

* [lang] add create call builder code generation

* [lang] improve code gen by altering spans of the generated code

* [examples] add ink-as-dependency to all lang examples

* [cli] add ink-as-dependency to smart contract template

* [lang] fix code gen bug with forwarding references

* [lamg] move impls out of const item

It seems that inherent impls shouldn't be put inside a const item.

* [core] impl Default for Hash

* [lang] add Flush, scale::{Encode, Decode} for contracts as dependencies

* [examples] add example to call remote smart contracts

* [examples] remove invalid test code from delegator contract

* [abi] fix warning about suffixed tuple indices

* [lang] fix bug in generate-abi codegen for deploy handler with multiple args

* [lang] derive from type_metadata::Metadata for contract structs

* [examples] ran cargo fmt

* [examples] derive type_metadata::Metadata for Which

* [examples] make code hashes deploy inputs for delegator contract

* [core] rename gas_cost to gas_limit

* [core] remove parts that got re-introduced accidentally upon merge

* [examples] add a README to the delegator contract

* [examples] restructure delegator project structure

* [examples] fix Cargo.toml of delegator

* [lang] fix bug that ink-as-dependency derives Metadata for the state struct

* [lang] add getter for account_id of ink-as-dependency state structs

* [examples] adjust Delegator contract to make it work with old ABI generator

* [lang] import FromAccountId

* [examples] provide a build.sh script to deploy delegator contract

* [readme] add section about wabt and wasm-utils tools

* [readme] add off-chain test for the example smart contract

* [examples] add .value call to contract create calls of delegator

* [*] use fix-serialization branch of type-metadata

* [*] use type-metadata master branch again (PR was merged)

* [lang] update the noop compile test

* [lang] simplified the noop compile test doc comments

* [lang] fix compiletest for Flipper contract

* [lang] fix compile tests for incrementer contract

* [lang] fix compile tests for Events contract

* [scripts] do not check the Delegator for now (needs special treatment)

* [ci] update rust version from nightly-2019-08-13 to nightly-2019-08-30

* [examples] restructure delegator contract project structure

* [scripts] make check-examples script simpler again after delegator refactoring

* [examples] clean up Delegator contract

* [examples] improve build guidance of Delegator contract

* [lang] reintroduce the old ABI generation

We keep this in ink! until the new ABI format support is stable enough.

* [examples] update examples to be able to use the old ABI generation

* [cli] update template for old ABI generation

* [abi] Create ink_abi sub crate

* [abi] Add initial types for abi generation

* [abi] Add EventParamSpec to include indexed event params

* [abi] Add documentation field to specs

* [abi] Add license and readme links and clean up authors

* [abi] Add missing license headers

* [abi] Fix some compile errors

* [abi] Make macros usable internally

* [abi] Create type_spec_of_tuple constructor macro

* [abi] Implement serialization for tuples

* [abi] Implement serialize for array types

* [abi] Remove module prefix of Vec<T>

* [abi] Apply rustfmt

* [abi] Improve minor formatting

* [abi] Add trait to allow external crate to specify serialize of TypeSpec<T>

* [abi] Make rustfmt happy

* [abi] Handle missing Vec in no_std environment

We really need a further abstraction to handle memory types.
Right now they life in ink_core but we shouldn't depend on ink_core from within ink_abi.
So we want to extract the memory sub module out of ink_core into its own crate that we can from then on depend on.

* [abi] Use same array pre-impls as metadata prototype impl

* [abi] Depend on cennznet/type-metadata + adjustments

* [abi] add missing license headers

* [abi] fixes for renamings in type-metadata crate

* [abi] add IntoCompact impls for layout types

* [abi] properly forward std feature

* [abi] implement Serialize for Key

* [abi] apply rustfmt and add some layout constructors

This also removes the dependency from ink_abi to ink_core and adds derive feature to type-metadata dependency.

* [core] implement ink_abi traits for ink_core abstractions

* adjust ink_abi Cargo.toml to using std feature by default

# Conflicts:
#	abi/Cargo.toml

* [core] Integrate ink_abi no_std compat into ink_core

* [lang] initial skeleton of codegen for ink_abi

* Enhance Flush (#136)

* [core] Enhance Flush trait to make it work with SyncCell and SyncChunk

* apply rustfmt

* [core] implement ink_abi traits for ink_core abstractions

* [core] Integrate ink_abi no_std compat into ink_core

* [core] Apply cargo fmt

* [cli] initial adjustments for ink_abi to ink! template

* [abi] clean-up of Cargo.toml

* [abi] remove invalid lib docs

* [utils] Update utilities docs

* [abi] improve JSON encoding of layout structs

* [abi] improve JSON encoding and add builder pattern constructors

* [abi] Add InkProject meta type

* [abi] temporarily depend on improve-json-output type-metadata branch

* [core] adjust type-metadata temporary branch to use the same as ink_abi

* [ci] add travis CI nightly-2019-08-01 channel (experimental)

* [abi] add MessageSpecBuilder::{args, docs} methods

* [core] implement Metadata for AccountId and Hash of DefaultSrmlTypes

* [abi] change type of selector from u64 to u32

* [lang] add some helper routines

* [lang] add code generation for new ABI format

* [abi,core] use master branch for type-metadata again

* [lang] implement initial code gen for ABI generation

* [examples] adjust Flipper contract example to ink_abi generation

* [lang] remove old generate-abi-description feature and associated code

* [examples] remove traces of removed generate-api-description feature

* [core] make cells_origin and chunks_origin only visible for test-env

* [cli] adjust template for ink-abi update

* [abi] implement ink_abi_derive for HasLayout derive macro

* [lang] make use of new ink_abi_derive functionality

* [examples] adjust Flipper for new ink_abi derive crate feature

This is needed because we disable default features.

* [abi] remove some commented-out code

* [chores] update README and include ink_abi docs

* [abi] apply rustfmt

* [lang] apply rustfmt

* [abi] apply rustfmt to non derive crate

* [core] apply rustfmt

* [lang] trim doc strings coming from syn::Attribute

* [examples] rename .tools directory to .ink

* [examples] fix bug with no_std and "std" crate feature

* [lang] fix bug in abi generation for events

* [examples] adjust events example to new ink_abi

* [lang] fix some more edge cases with doc string trimming

* [lang] fix a bug that path matching for function arguments was off

* [examples] adjust Incrementer to new ink_abi

* [cli] rename .tools to .ink in template

* [cli] update template Cargo.toml

* [examples] temporarily fix type-metadata hick-up

* [examples] make ink_abi optional

* [examples] adjust Erc20 token example to new ink_abi

* [cli] fix template no_std support

* [*] use master branch of type-metadata crate again

* [examples] replace parity-codec/std with scale/std

* [core] derive Metadata for some util types

This unfortunately was lost upon the latest rebase.

* [ci] update from nightly-2019-08-01/2019-07-19 to just nightly-2019-08-09

* [abi] remove commented-out code

* [abi] add some docs to specs items

* Update abi/src/specs.rs

Co-Authored-By: Andrew Jones <ascjones@gmail.com>

* Update abi/src/specs.rs

Co-Authored-By: Andrew Jones <ascjones@gmail.com>

* Update core/src/storage/collections/stash/impls.rs

Co-Authored-By: Andrew Jones <ascjones@gmail.com>

* Update core/src/storage/collections/stash/impls.rs

Co-Authored-By: Andrew Jones <ascjones@gmail.com>

* [examples] remove some more commented-out code

* [lang] remove outdated docs

* [lang] extract fn docs impl into helper method

* [lang] fix compile-error in `filter_doc_attributes`

* [core] use derive feature from ink_abi

* [examples] adjust shared_vec example for ink_abi

* [lang] trim doc comments raw string escape sequence

* [lang] adjust noop test for ink_abi

* [lang] adjust flipper test for ink_abi

* [lang] improve raw-string char sequence fix

* [lang] adjust incrementer test for ink_abi

* [lang] adjust events test for ink_abi

* [lang] fix whitespace (tabs) issues in lang tests

* [ci] add examples to CI

* [ci] remove +nightly attribute for examples

* [abi] remove instances of std usage

* [core] remove instances of std usage

* [examples] erc20: remove std usage in no_std environment

* [core] factor out ink_abi and type-metadata and guard their use with ink-generate-abi feature

* [examples] adjust examples to newest refactoring in ink_core

* [cli] adjust template to ink_core refactorings

* [scripts] add new script to quickly check all example smart contracts

* [ci] make use of new check-examples script

* [*] apply rustfmt

* [scripts] adjust check-examples to no longer set test-env

* [scripts] Add check-workspace script

* [examples] make test-env a default feature

* [cli] make test-env a default feature for the template

* [ci] update CI to use the new check-workspace script

* [*] parity-codec -> parity-scale-codec

* [core, model] Decode impls Option -> Result

* [core] typed_cell load expect successful Decode

* [core] Option to Result, remove redundant combinator

* [model] Option to Result

* [*] abbreviate parity-scale-codec

* [core] fix dummy Call Decode impl

* [core] Add AccountId to EnvTypes

* [core] Add calls mod, plus WIP tests

* [core] Balance transfer call roundtrip works

* [core] Add ext_dispatch_call

* [core] Implement ext_dispatch_call

* [examples] Add example lang contract for ext_dispatch_call

* [examples] WIP: implement example lang contract for ext_dispatch_call

* [examples] complete basic implementation of dispatching Balances Call

* srml-contracts -> srml-contract

* [core] remove unsafe from dispatch_call api fn

* [core] Add docs to dispatch_call

* [core] Add missing trait bound to account index

* [core] Some todos

* [core] Rename dispatch_call to dispatch_raw_call on Env trait

* [lang] Add AccountIndex type alias

* [model] add strongly type dispatch call to EnvHandler

* [*] specify latest parity-codec version, same as substrate

* [core] fix call roundtrip tests

* [lang] fix tests

* [core] fix wasm build

* [core] fix std build

* [core] move call type serialization tests

* [core] test Call serialization roundtrip

* [core] use node_runtime for Call serialization roundtrip

* [core] remove unused dependencies

* [core] remove unused substrate dependencies

* [core] change default Balance to u128, matching substrate

* [core] introduce Address type for balance calls

* [core] fix Balances transfer serialization test

* [core] add Address serialization tests

* [ci] install wasm-gc for building substrate dev deps

* [ci] move wasm-gc installation after wasm target added

* [examples] get the calls example compiling

* [CI] add temporary check for debugging ci build

* [CI] restore wasm-gc to install section and remove temp version check

* [CI] temporarily depend on substrate branch to test build fix

* [CI] remove temp substrate branch, build issue fixed

* [core] use std feature instead of test-env for EnvTypes

* [core] remove Call types, moved to ink-types-node-runtime

* [core] remove AccountIndex from EnvTypes

* [core] remove AccountIndex from lang codegen

* [core] fix unused for std

* [CI] remove wasm-gc from travis build

* [CI] remove AccountIndex type alias from codegen

* parity-codec version 4.1.1 -> 4.1

* [core] ext_dispatch_call docs

* [core] describe in comment what will happen if decoding fails

* [model] implement suggestion of Into<Call>

* rustfmt

* rustfmt again

* rustfmt again again

* [examples] deleted calls example - moved to ink_types_node_runtime

* [core] use into in api::dispatch_call

* [core] make Call empty enum and use test-env feature for EnvTypes

* [core] remove unused Call enum

* [core] add comments explaining rationale for test-env

* [core] missing period

* [core] add comments

* [core] add space in comment

* [core] add comment to Call decode impl

* [core] make dispatched_calls a DoubleEndedIterator

* [core] add missing doc comment

* [core] add comment explaining Decode requirement

* [core] doc comment and DoubleEndedIterator

Shawn Tabrizi authored Apr 22, 2019 and Hero Bird committed Apr 22, 2019

* [examples] Add flipper contract to examples folder

* [examples] Simplify flipping logic

* [examples] Fix flipper test

* [examples] Update Flipper and Incrementer examples

* [examples] cargo fmt on Flipper

This is to differentiate for what abstraction layer they are an example.
The core/ examples are for pdsl_core/ and model/ for pdsl_model respectively.

This can be reverted back to the official parity-codec project once the new version with the changes has been released on crates.io.

Now it has the required features in a branch.

Read previous commit for more info.

This is for no_std compatibility.

Also extended .gitignore to ignore the target directory of all example projects.