Glassvision/IfcOpenShell
1
0
Fork 0
mirror of https://github.com/IfcOpenShell/IfcOpenShell.git synced 2026-08-10 17:58:20 +00:00
Code Issues Packages Projects Releases Wiki Activity

Update README.md about extend express usage (#4841)

Browse Source 
1. C++ code generation by extend express.
2. python rule code generation by extend express.
This commit is contained in:
shungeer
2024-07-01 09:20:30 +08:00
committed by GitHub
parent 20f8181ac3
commit 8c12da13e6
1 changed files with 15 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/ifcopenshell-python/ifcopenshell/express/README.md
+15 -2
View File
@@ -8,11 +8,24 @@ The code can be invoked in the following way and results in several code outputs
named according to the schema name in the Express file. A python 3 interpreter
with the `pyparsing` (`pip install pyparsing`) library is required.
note:
**Keep in mind that Express is not very suitable for this kind of usage. In the end, (as far as I can tell) no tool is able to read your model, because it doesn't understand the schema as it has no notion of the core part vs the addition.**
## Command line usage for code generation
The usage for C++ project.
~~~
# python3 bootstrap.py express.bnf > express_parser.py
python3 express_parser.py IFC2X3_TC1.exp header implementation schema_class definitions
# bootstrap.py express.bnf in ifcopenshell-python.ifcopenshell.express.
>>> python3 bootstrap.py express.bnf > express_parser.py
>>> python3 express_parser.py IFC2X3_TC1.exp header implementation schema_class definitions
~~~
The usage for python project.
~~~
# code rule generation
# generating 'ifcopenshell.express.rules.IFC2X3_TC1' in ifcopenshell-python.ifcopenshell.express.rules.
# rule_compiler in ifcopenshell-python.ifcopenshell.express.
>>> python -m rule_compiler IFC2X3_TC1.exp
~~~
## Programmatic usage