Jsonnet is a domain specific configuration language that helps you define JSON data. Jsonnet lets you compute fragments of JSON within the structure, bringing the same benefit to structured data that templating languages bring to plain text.

For additional information on Jsonnet see

http:https://jsonnet.org

Apache License, Version 2.0

Building under most UNIX systems is easy, just run the configure script and then run make. For more information about the build process, see the tcl/unix/README file in the Tcl src dist. The following minimal example will install the extension in the /opt/tcl directory.

$ cd tcljsonnet
$ export CC=g++
$ ./configure --prefix=/opt/tcl
$ make
$ make install

If you need setup directory containing tcl configuration (tclConfig.sh), below is an example:

$ cd tcljsonnet
$ export CC=g++
$ ./configure --with-tcl=/opt/activetcl/lib
$ make
$ make install

jsonnet::evaluateFile - accepts a file name string.
jsonnet::evaluateSnippet - accepts a string to evaluate.

package require jsonnet

set snippet {// example_operators.jsonnet
{
    foo: [1, 2, 3],
    bar: [x * x for x in self.foo if x >= 2],
    baz: { ["field" + x]: x for x in self.foo },
    obj: { ["foo" + "bar"]: 3 },
}}

jsonnet::evaluateSnippet $snippet