|0.1.0||Sep 27, 2021|
|0.1.0-alpha.0||Sep 23, 2021|
#279 in Development tools
46 downloads per month
Used in ruststep
This project is still in experimental stage. DO NOT USE FOR PRODUCT.
Crates for STEP (Standard for the Exchange of Product model data) written in pure Rust aimed at replacing stepcode.
- STEP is a set of data serialize formats, schema language, and common schemas.
- Data serialize format is called exchange structure in ISO document, but usually called STEP file,
They are serialized as ASCII text (ISO-10303-21, usually with extension
*.p21) or XML (ISO-10303-28).
- Schema language is called EXPRESS. EXPRESS file is usually named with extension
- Many common schemas are defined in ISO-10303 by EXPRESS language.
- schemas contains copies
- Application Protocol (AP) is a class of defined schemas, and the main target of this project.
- AP203 is most famous one in CAD (computer-aided design) applications.
|Protocol Buffers||STEP (ISO 10303)|
|Schema Language||Protocol Buffers Version 3 Language Specification||EXPRESS Language (ISO 10303-11)|
|Data||Encoded Binary data||"Exchange structure",
- STEP is not only for CAD
- EXPRESS is a general data schema like Protocol Buffers
- Later ISOs also uses EXPRESS
- For computer-aided technologies (CAx) including:
- computer-aided manufacturing (CAM)
- computer-aided engineering (CAE)
- product data management (PDM/EDM)
- manufacturing resource planning (MRP)
- enterprise resource planning (ERP)
- We have to generate many codes from EXPRESS schemas
- Tables for SQL or NoSQL database, Object-Record Mapper (ORM)
- on-wire, on-memory format
- ASCII / XML are inefficient than binary format e.g. protocol buffers
- Extensible EXPRESS compiler is required
- Like as protoc generates gRPC binding using gRPC-plugin
This project consists of following crates:
|espr||EXPRESS Language (ISO 10303-11) Compiler|
|ruststep||Codes generated by espr compiler, and IO for ASCII and XML formats|
See ARCHITECTURE.md for detail.
- Minimal EXPRESS Compiler to generate Rust struct definitions
- Deserialize STEP file (ASCII) to Rust struct
- Serialize Rust struct to STEP file (ASCII) https://github.com/ricosjp/ruststep/issues/13
- Translate rules in EXPRESS schema into Rust code https://github.com/ricosjp/ruststep/issues/43
- Stablize AST and IR representation of espr
- Binary format convertible into STEP ASCII and XML formats
- RDB support, ORM generation
Copyright 2021 RICOS Co. Ltd.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
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