aqua/README.md
Dmitry Kurinskiy b9af20339b
Module and Use expressions (#245)
* Module and Use expressions

* UseFromExpr

* ImportFromExpr

* PubExpr

* Export, declares

* Collecting all the needed info WIP

* Got all the needed data

* Tests fixed

* HeaderSem

* HeaderSem wip

* Everything except `export`/`declares` should be working

* Compile bug fixed

* Fix readme: cli/assembly

* Handle declares, exports

* Compile only exports in AquaRes

* Call services imported from modules

* Import consts, types, services from modules

* Resolve arrows from modules

* Bugfix
2021-08-20 18:03:47 +03:00

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## Aqua
[![release](https://github.com/fluencelabs/aqua/actions/workflows/release.yml/badge.svg)](https://github.com/fluencelabs/aqua/actions/workflows/release.yml)
Aqua is a new-gen language for distributed systems.
Aqua programs are executed on many peers, sequentially
or in parallel, forming a single-use coordination network.
Aqua's runtime is heterogeneous: it includes browsers, servers, devices, all involved in solving a single task.
Therefore, Aqua scripts are compiled into several targets at once, with AIR and Typescript as a default.
## Using Aqua
Please refer to [Aqua Book](https://doc.fluence.dev/aqua-book/) to learn how to use Aqua.
## Compiler CLI
To build the Aqua compiler, clone the repo & run `sbt cli/assembly`,
or simply download the latest JAR file from the [releases](https://github.com/fluencelabs/aqua/releases) page.
It requires `java` to run Aqua compiler from the command line:
```commandline
java -jar aqua-cli-%version_number%.jar -i path/to/input/dir -o path/to/output/dir
```
Input directory should contain files with `aqua` scripts.
## Repository structure
- **[types](./types)** data types, arrows, stream types definitions and variance
- **[parser](./parser)** - parser, takes source text and produces a source AST
- **[model](./model)** - middle-end, internal representation of the code, optimizations and transfromations
- **[model/transform](./model/transform)** - optimizations and transfromations, converting model to the result, ready to be rendered
- **[model/test-kit](./model/test-kit)** - tests and test helpers for the model and transformations
- **[semantics](./semantics)** - rules to convert source AST into the model
- **[linker](./linker)** - checks dependencies between modules, builds and combines an abstract dependencies tree
- **[backend](./backend)** - compilation backend interface
- **[compiler](./compiler)** - compiler as a pure function made from _linker_, _semantics_ and _backend_
- **[backend/air](./backend/air)** generates AIR code from the middle-end model
- **[backend/ts](./backend/ts)** - generates AIR code and Typescript wrappers for use with Fluence JS SDK
- **[cli](./cli)** - CLI interface