67 releases (breaking)
0.142.0 | Sep 28, 2023 |
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0.140.0 | Sep 28, 2023 |
0.101.0 | Jul 24, 2023 |
0.95.0 | Mar 12, 2023 |
0.3.1 | Feb 20, 2018 |
#287 in WebAssembly
572 downloads per month
Used in 3 crates
(2 directly)
375KB
8K
SLoC
flowstdlib
Library
flowstdlib
is a standard library of functions and flows for flow
programs to use.
Modules
flowstdlib
contains the following modules:
Use by the Compiler
In order for the compiler to be able to find the library's flow
and function
definitions, the directory containing
this library must be in the default location ($HOME/.flow/lib
), be part of FLOW_LIB_PATH
or specified using an
instance of the -L
command line option to flowc
,
NOTE: That flows are compiled down to a graph of functions at compile time, and do not exist at runtime.
Building this library from Source
Libraries like flowstdlib
are built using flowc
, specifying the library root folder as the source url.
This builds a directory tree (in target/{lib_name}
) of all required files for a portable library, including:-
- documentation files (.md MarkDown files, .dot graphs of flows, graphs rendered as .dot.svg SVG files)
- TOML definition files for flows and functions
- Function implementations compiled to a .wasm WASM file
- A
manifest.json
manifest of the libraries functions and where the implementations (.wasm files) can be found. This is used by the Runtime to be able to load it.
Dual nature of flow libraries
Flow libraries such as flowstdlib
have a dual nature. They can compiled and linked natively to a binary such
as flowr
, or when compiled by flowc
all the functions implementations are compiled to
.wasm
WASM files.
Native use by a Runtime
flowr
offers the -n/--native
option for the flowstdlib
to be used natively. When used, functions it
contains will be run natively (machine code), as opposed to WASM implementations of the functions.
WASM use by a Runtime
If the -n/--native
option is not used, and the library manifest (manifest.json
) is found by the flow
runner (e.g. flowr
) at runtime (using default location, FLOW_LIB_PATH
or -L
), then the manifest is read and
the functions WASM implementations found and loaded.
When a job is executed that requires one of these library functions, the WASM implementation is run.
features
There are no features to enable.
Dependencies
~16–26MB
~439K SLoC