* [chores] update README to new ink! 3.0 syntax

* [*] update all broken LICENSE and README.md symbolic links

* [*] update all license headers

Also be more strict about their dates: 2018-2020 for all

* [*] move all ink! crates into crates/ directory

* [ci] adjust .gitab-ci.yml to crates/ directory

* [ci] fix GitLab .gitlab-ci.yml (attempt #2)

* [ci] forgot some lines in attempt #2

* [examples] fix example smart contracts

They need to readjust their paths for the crates/ directory.

* [lang/codegen] initial impl of the new ink! codegen

This new codegen is based on the (also) new ink! IR.

* [lang/macro] apply rustfmt to imports

* [lang/codegen] apply rustfmt

* [lang/ir] add ItemMod::{attrs, vis} getters

* [lang/codegen] make use of ir::ItemMod::{attrs, vis} in codegen

* [lang/codegen] restructure ink_lang_codegen library

* [lang/codegen] appliy clippy suggestion

* [lang/ir] add Event::attrs() and ToTokens impl for EventField

* [lang/codegen] apply rustfmt

* [lang/codegen] implement Event code generator

* [lang/codegen] make use of the new Events code generator

* [lang/ir] make ir::Callable always Copy and Clone

* [lang/ir] rename CallableWithSelector::item -> callable

* [lang/ir] add Callable::kind() trait method

* [lang/codegen] add dispatch enum code generation

* [lang/codegen] enable dispatch code generator

* [lang/codegen] add generation for constructor dispatch enum

* [lang/codegen] implement contract entry points

* [lang/codegen] implement code generation for DispatchUsingMode impl

* [lang/codegen] add trait impl namespaces Msg<S> and Constr<S>

* [lang/ir] add ir::Message::inputs_span() getter

* [lang/codegen] add codegen for dispatch trait impls for ink! messages

* [lang/codegen] plug-in dispatch trait impls code gen

* [lang/ir] add Callable::inputs_span trait method

* [lang/codegen] implement dispatch trait impl codegen for ink! constructors

Also this implementation avoids a lot of code duplication with the similar code generation for dispatch trait impl of ink! messages.

* [lang/codegen] make generate_input_bindings doc tests pass

* [lang/ir] apply rustfmt

* [lang/codegen] fix message and constructor namespaces

* [lang/ir] add {Message, Constructor}::attrs getter

* [lang/codegen] implement codegen for ink! ItemImpls

* [lang/codegen] remove some unneeded imports for ItemImpl codegen

* [lang/codegen] automatically import ink_lang's Env, EmitEvent and StaticEnv traits

* [lang/codegen] do not generate for ink-as-dependency

* [lang/codegen] initial impl for cross-calling codegen

Not complete, yet. Also we stubled upon the fact that due to the
additional Rust trait support we have to completely change how we
generate code for cross-calling. Research!

* [core] rename utils.rs -> selector.rs

* [core] add common mod for common abstractions for call and create

* [core] improve ExecutionInput: add useful trait impls

* [core] refactor call builder

* [core] adjust rest of ink_core to changed imports

* [core] implement new CreateBuilder

* [core] remove old InstantiateBuilder

* [core] remove no longer needed traits

* [core] add eval,invoke,eval_params,invoke_params to CallBuilder

This makes both CallBuilder and CreateBuilder more similar to each other.

* [core] apply rustfmt

* [core] adjust environment to new CreateBuilder

* [core] apply rustfmt

* [core] move eval and invoke to CallParams

* [core] adjust on-chain impl for CallBuilder

* [core] add explanation for the cfg

* [core] move instantiate to CreateParams

* [core] make CreateParams getters crate private

* [core] rename Call -> CallParams

* [core] improve doc comment

* [lang] adjust lang for new call and create builders

* [core] expose builder construction through build_call and build_create

* [core] remove Default impl for empty ExecutionInput

* [core] add usage examples to build_call

* [core] improve usage doc example of build_call

* [core] improve doc tests for build_call

* [core] add doc test example to build_create

* [core] fix compilation after merge

* [metadata] make constuctor and message name an array and add is_payable

Only messages need is_payable field since constructors must always be payable.

* [lang/codegen] add metadata code generation

* [lang/ir] implement lint to ensure there are no __ink_ prefixed identifiers

Identifiers starting with __ink_ may only be used by the ink! codegen.
So far this has been only implemented on TokenTree or TokenStream level and not on parsed syn abstractions leading to arcane errors. E.g. it was possible to catch errors if an __ink_ substring appeared in a string literal before.

* [metadata] make serialized Layout fields camelCase

* [lang/ir, lang/macro] apply rustfmt

* [lang/ir] initial implementation of #[ink::trait_definition] proc. macro

* [lang/ir] re-export InkTrait

* [lang/macro] create new proc. macro for ink! trait definitions

* [lang/ir] improve error messages of #[ink::trat_definition] a bit

* [lang/ir] add many more unit tests

* [lang/ir] apply rustfmt

* [lang/ir] fixed spelling bug

* [lang/ir] fix handling or errorneous Self receiver in ink! constructors

* [lang/ir] add bunch of new unit tests for #[ink::trait_definition] proc. macro

* [lang/ir] add some more unit tests

* [lang/ir] implement checks for invalid ink! attributes

* [lang/ir] add unit tests for invalid ink! attributes

* [lang/ir] use syn's builtin receiver getter

* [lang/ir] add iterators for ink! trait definition

* [lang/ir] add getters for generic info of ink! trait definition

* [lang/ir] fix a unit test testing too much

* [lang/ir] deny ink! trait definitions with supertraits

We might add support for supertraits in future versions.

* [lang/ir] add verify_hash functions

* [lang/ir] simplify ink! trait verification hash

There now is only a single hash instead of a hash per constructor and message.

* [lang/ir] add InkTrait::attrs() getter

* [lang/ir] add re-exports for most InkTrait types

* [lang/codegen] initial implementation of #[ink::trait_definition] codegen

Does not yet include the verification hash generation.

* [lang/codegen] refine codegen for ink! trait definitions

* [lang, lang/codegen] use correct trait for ink! trait definition checking

* [lang/codegen] rework crate exposed API

* [lang/ir] fix return value of ir::InkTrait::new

* [lang/macro] update codegen driver for ink! trait definition

* [core, lang/codegen, lang/ir, metadata] apply clippy suggestions

* [lang/codegen, lang/ir, lang/macro, lang] apply rustfmt

* [lang/macro] add ink_lang_codegen dependency

Needed for #[ink::trait_definition] proc. macro.

* [core/derive] use _ as const name instead of generated one

* [lang/codegen] prefix {Constructo,Message}DispatchEnum ident with __ink_

* [lang/codegen] use payable instead of is_payable

* [lang/codegen] hide some generated types

* [lang/ir] improve error span of bad storage struct visibility

* [core] add CallBuilder::returns to signal return type

Also this adds CallBuilder::fire as a quick way to fire off the call.
The CallBuilder::invoke_params and CallBuilder::eval_params are no longer needed and thus removed.

* [lang/ir] implement ToTokens for ir::Receiver

* [lang/codegen] apply #[doc(hidden)] to generated call forwarders

* [lang/codegen] slightly clean-up code

* [lang/codegen] use new call infrastructure for call forwarders

* [lang/codegen] add codegen for short-hand cross-contract message calls

* [lang/codegen] add #[inline] to generated short-hand message calls

* [lang/codegen] improve short-hand call error message

* [lang/codegen] do not generate conflicting impls

* [lang/codegen] generate non-ink! specific user defined items

* [lang/ir] remove some commented out code

* [core, lang/ir] apply rustfmt

* [core] add CreateBuilder::instantiate

* [lang/codegen] fix generate_arg_list

* [lang/codegen] add cross-calling codegen for non-trait constructor impls

* [lang/codegen] add an associated type per trait constructor in ink! trait definition

* [lang/codegen] remove former Output associated type in ink! trait definition

* [lang] re-export trait_definiction proc. macro from ink_lang crate

* [lang/ir] expose InkTrait::compute_verify_hash

* [lang/ir] add ir::ItemImpl::trait_ident

* [lang/codegen] fix some bugs with trait_definition codegen

* [lang/codegen] add codegen for cross-calling ink! trait implementations

* [lang/codegen] surpress warning in generated code

* [lang/codegen] fix bug in generated trait constructors

* [lang/codegen] add codegen for trait implementation blocks

* [lang/ir] allow access to parent impl block from within a CallableWithSelector

* [lang/codegen] make dispatch trait impls more explicit for trait impls

* [lang/codegen] fix and fully implement cross-calling (trait) impl blocks

Works now for both trait impl blocks as well as inherent impl blocks.
Only missing piece now is the codegen for the call forwarders and their impl blocks.

* [lang/ir] add ir::ItemImpl::attrs getter

* [lang/codegen] add codegen for impl block attributes for cross-calling

* [lang/codegen] correctly re-generate attributes for impl blocks

* [lang/codegen] generate forwarder inherent impl blocks

* [lang, lang/codegen] adjust ink::trait_definition proc. macro codegen

Now it also generates an associated return type per message.
Those have to respect the ink_lang::ImpliesReturn trait.

* [lang/codegen] add cross-calling call forwarder codegen for trait impl blocks

* [lang] add NeverReturns utility codegen type

* [lang/codegen] implement codegen for cross-calling trait impl blocks

* [*] apply rustfmt

* [lang/codegen] apply some clippy suggestions

* [lang/codegen] always use std feature for itertools dependency

Otherwise codegen won't work for Wasm32 compilations.

* [lang/ir] fix error span for bad event visibility modifier

* [lang/ir, lang/codegen] fix event fields codegen

* [lang/codegen] fix incorrectly generated EmitEvent trait impl

* [lang/codegen] fix bugs with ink-as-dependency and event usage

* [lang, lang/codegen] add ContractEnv trait

Used to query EnvTypes trait impl using the ink! storage struct.

* [lang, lang/codegen] implement payable messages and dynamic storage alloc

Now it is possible to control whether to use the dynamic storage allocator provided by ink! in ink! itself.
Also this PR implements codegen for non-payable messages.

* [lang/macro, lang/codegen] apply rustfmt

* [lang/ir] error upon payable constructor

ink! constructors are payable by default.

* [core] remove EnvTypes::Call associated type

No longer needed since we just removed the ability to directly call the runtime.

* [core] add MAX_EVENT_TOPICS to EnvTypes trait

* [lang, lang/codegen] optimize message payment checks codegen

* [lang/ir, lang/codegen] dynamic storage allocator: rename + change default

New default is set to "false" so only contracts that actually use this feature need to specify it.
Also renamed to dynamic_storage_allocator to better carry intention.

* [lang, lang/codegen] add codegen to guard against too many event topics

* [lang/codegen] pull topic guards codegen out of topics impl codegen const

* [lang/codegen] split event topic guards into their own method

* [lang] apply rustftm

* [lang/ir] remove unnecessary lifetime

* [lang] make use of deny_payment internally

* [lang/macro] ignore UI compile tests for now

These will be re-enabled for the follow-up PR.

* [metadata] rename is_payable -> payable (also for metadata format)

* [lang/ir] resolve duplicate code for non-pub visibility checking

Was duplicated for events and storage structs.

* [lang/ir] apply rustfmt

* [lang/codegen] removed commented-out code and update license header

* [lang/codegen] update crate description

* [core] move CreateParams impl blocks closer to struct definition

* [lang/macro] use US english

* [core] fix incorrect doc comment

* [core] initial implementation of env revision 3

* add engine abstraction layer and implement api functions

* add support for dispatch_call to env3

* add missing invoke_runtime to api.rs

* [core] fix restore_contract docs

* [core] initial implementation of off-chain environment

* [core] clean-up of env3 fundamental types

* [core] add WasmEnv::reset_buffer

* show test submodule of env3 when compiling with rustdoc

* [core] initial implementation of the off-chain env instance

Also many other adjustments.

* [core] further enhancements to off-chain env

* [core] implement untyped Env for off-chain environment

* [core] implemented a good chunk of TypedEnv for the off-chain environment

* [core] minor improvements to env3

* [core] further improvements and additions to test-api of env3

* [core] remove former test-api file

* [core] env3: add support for ext_tombstone_deposit

* [core] env3: add setting of rent allowance in off-chain env

* [core] env3: remove buffer.rs

* [core] env3: remove property.rs

* [core] env3: mark some TypedEnv methods as not-todo

* [core] env3: enable off-chain api for non test/doc builds

* [core] env3: use a static buffer instead of Vec<u8>

* [core] env3: move static buffer into its own module

* fix doc comment

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

* [core] env3: add missing license header

* [core] env3: remove deprecated doc note

* [core] env3: add off-chain {set/get}_runtime_storage

* [core] env3: add off-chain invoke_runtime dispatch

This also enables support for registering custom runtime call handlers.

* [core] env3: slightly improve env3::random docs comment

* [core] env3: move off-chain errors under EnvError

* [core] env3: add ext_random support for the off-chain environment

* [core] env3: minor clean ups

* [core] env3: improve TypedEncoded::assign

* [core] env3: un-mut some variables

* [core] env3: fix some clippy warnings

* [core] env3: add past_printlns to off-chain test api

* [core] env3: minor refactoring

* [core] env3: apply rustfmt

* [core] env3: clean up of call and instantiate contract

* [core] env3: rename moment -> time_stamp

* [core] env3: make get_runtime_storage return a Result instead of RetCode

* [core] env3: remove unneeded import

* [core] env3: add some trait impls for EnvTypes::Hash

* [core] env3: remove last remaining usages of RetCode

* [core] env3: refactor some errors

* [core] env3: document the EnvError enum

* [core] env3: add impls for fire methods on call and create builders

* [core] env3: add doc comment to past_printlns

* [core] env3: apply rustfmt

* [core] env3: update license headers

* [core] env3: support querying and emitting of events in off-chain env

* [core] env3: missing license header adjustment

* [core] env3: apply rustfmt

* [core] env3: rename some methods in off-chain test-api

* [core] env3: add doc comment to test::emitted_events

* [core] env3: add stub for test::advance_block

* [core] env3: rename some more test API methods

* [core] env3: initialize entropy of block randomly

* [core] env3: extend EnvTypes trait bounds

This change makes the trait bounds more similar to what Substrate defines.

* [core] env3: document SimpleArithmetic trait

* [core] env3: add From<u32> to SimpleArithmetic trait

* [core] env3: made some trait bounds more explicit in SimpleArithmetic trait

* [core] env3: add comment describing potential future extensions to SimpleArithmetic trait

* [core] env3: rename EnvTypes::Moment to TimeStamp

* [core] env3: add block_time to ChainSpec

* [core] env3: remove CodeDb again

Not needed right now. Maybe re-added at a later point.

* [core] env3: apply rustfmt

* [core] env3: implement off-chain test::advance_block

* [core] env3: fix bug in off-chain test::advance_block impl

* [core] env3: made SimpleArithmetic trait more explicit towards Output types

* [core] env3: add default initialization routines for off-chain environment

* [core] env3: remove test::create_user_account for now

* [core] env3: fix missing renaming from Moment -> TimeStamp

* [core] env3: impl PartialEq and Eq for off-chain error types

* [core] env3: add test::run_test for off-chain testing with default setup

* [core] env3: fix several minor bugs with the off-chain environment

* [core] convert key.rs tests to new env3

* [core] remove commented out code in key.rs tests

* [core] evn3: add test::get_contract_storage_rw

* [core] use env3 instead of env1 in storage cells

* [core] integrate env3 into storage::TypedChunk

* [core] remove storage::RawChunk and NonCloneMarker

* [core] adjust SyncChunk slightly for TypedChunk modifications

* [core] simplify transitioned env3 tests for TypedChunk

* [core] transition tests for SynChunk to env3

* [core] transition storage::Stash tests to env3

* [core] transition storage::HashMap tests to env3

* [core] transition storage::BinaryHeap tests to env3

* [lang] remove the entire ink! lang crate

It has been deprecated for a whole while.

* [model] remove ink! model crate entirely

It has been deprecated for a whole while.

* [core] remove the old env1 sub-module of ink_core

It has been deprecated for a whole while.

* [examples] remove model examples

* [examples] remove lang examples

* [examples] remove core examples

* remove "If given too few endowment" from docs

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

* fix doc comment

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

* fix doc comment

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

* [lang2] initial steps towards basing on env3 instead of env2

With this commit `cargo contract build` already works.
However, cargo test etc. are still broken.

* [lang2] make macros work for `cargo test`

* [core, lang2] make contracts compile as ink-as-dependency

* [lang2] make events work for ink_lang2 on env3

* [lang2] remove AccessEnv - no longer needed

* [core] remove env2

* [lang2] fix tests

- Fix warning in ink_lang2
- Remove no longer needed test case
- Adjust some passing tests after default module import removal

* [*] apply rustfmt

* [lang2] silence unused warning for now

* [core] rename {create|Create}* to {instantiate|Instantiate}*

- CreateBuilder -> InstantiateBuilder
- CreateParams -> InstantiateParams
- create -> instantiate

* [core] rename endowment -> transferred_value for CallBuilder/Params

* [examples] adjust Delegator contracts for recents changes

* [core] rename now_in_ms -> block_timestamp

* [core] follow-up of the call renamings (transferred_value)

* [lang2] rename now_in_ms -> block_timestamp

* [examples] move examples out of the examples/lang2 folder

* [examples] fix runtime-storage example contract

* [examples] fix Flipper contract

* [examples] fix Incrementer contract

* [examples] fix Erc20 contract

* [utils] add Key and byte_utils to ink_utils

* [utils -> primitives] rename ink_utils -> ink_primitives

* [*] move all links from ink_utils -> ink_primitives

* [primitives] update Cargo.toml description

* [*] use ink_primitives::Key remove ink_core::Key

* [primitives] refactor new crate, make it more usable in ink! context

* [*] relink to ink_primitives for Key usage

* [abi] refactor macros and relink to ink_primitives::Key

* [lang2] fix usage of renamed Create{Builder, Params}

* [examples] fix examples under recent changes with ink_primitives

* [*] apply rustfmt

* [lang2/macro] remove deprecated feature usage of proc_macro_hygiene

* [examples] remove deprecated proc_macro_hygiene feature

* [core] remove test_utils

* [core] rename env3 to env

* [*] rename all usages of env3 to env

* [core] fix feature usage in num-traits of ink_core Cargo.toml

* [*] update README

* [primitives] conditionally compile type_metadata from ink_primitives

* [core] make env::get_contract_storage return Option<Result<T>>

* [core] fix some faulty doc comments

* [ci] fix GitLab CI

* [primitives] fix no_std compilation

* [primitives] fix warning

* [core] make `rand` dependency optional for `std` crate feature

* [core] remove the test-env crate feature from the ink_core crate

* [core,primitives] move some tests from primitives to core

* [lang] move lang2/ to lang/

* [*] rename all instances of ink_lang2 or lang2 to ink_lang or lang

* [lang/macro] fix ink_primitives dependency

* [*] apply rustfmt

* [core] fix clippy warning

* [ci] eliminate README from examples CI checks

* [examples] apply rustfmt

* [lang/macro] improve event codegen

* [core] rename TimeStamp/time_stamp to Timestamp/timestamp

* [lang] remove unused extern crate alloc

* [core] rename env::address to env::account_id

* [lang] perform renamings on ink_lang::EnvAccess but with deprecation instead of removal

* [core] fix missing time_stamp renamings

* [lang] fix missing TimeStamp renamings

* improve doc comment

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

* improve doc comment

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

* rename create_contract -> instantiate_contract

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

* rename create_contract -> instantiate_contract

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

* improve doc comment

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

* impr

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

* improve doc comment

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

* improve doc comment

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

* improve doc comment

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

* rename endowment -> transferred_value

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

* improve doc comment

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

* rename create_contract -> instantiate_contract

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

* rename create_contract -> instantiate_contract

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

* rename time stamp to timestamp

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

* rename SRML to env in docs

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

* remove SRML word from docs

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

* remove SRML word from docs

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

* [lang] fix doc comment for filtered_keys in restore_contract

* [core] rename create_contract -> instantiate_contract

* [core] rename create_contract -> instantiate_contract

* [core] fix some renamings around endowment -> transferred_value

* [lang] rename create_contract -> instantiate_contract follow-up

* [core] apply rustfmt

* [core] improve restore_contract doc comment

* [core, lang] link to ink_core::env::* doc comments from all api places

* [core] apply rustfmt

Co-authored-by: Michael Müller <mich@elmueller.net>
Co-authored-by: Andrew Jones <ascjones@gmail.com>

* [ink] Fix some clippy warnings

* [lang] Major clean ups in preparation of greater refactorings

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.