240cdb8f0f
This change completes implementing lambdas in the runtime, closing out pulumi/coconut#62. The change is mostly straightforward, with most changes coming down to the fact that functions may now exist that themselves aren't definitions (like class/module members). The function stub machinery has also been updated to retain the environment in which a lambda was created, effectively "capturing" the lexically available variables. Note that this is *not* dynamic scoping, which will be a problem down the road when/if we want to support Ruby. My guess is we'll just have a completely different DynamicallyScopedLambdaExpression opcode. |
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| docs | ||
| examples | ||
| lib | ||
| pkg | ||
| sdk | ||
| .gitignore | ||
| .gitmodules | ||
| glide.lock | ||
| glide.yaml | ||
| Makefile | ||
| README.md | ||
Coconut
Coconut is a framework and toolset for creating reusable cloud services.
If you are learning about Coconut for the first time, please see the overview document.
Installing
To install Coconut from source, simply run:
$ go get -u github.com/pulumi/coconut/cmd/coco
A GOPATH must be set. A good default value is ~/go. In fact, this is the default in Go 1.8.
This installs the coco binary to $GOPATH/bin.
At this moment, libraries must be manually installed. See below. Eventually we will have an installer.
Compilers
The Coconut compilers are independent from the core Coconut tools.
Please see the respective pages for details on how to install, build, and test each compiler:
Development
This section is for Coconut developers.
Prerequisites
Coconut is written in Go and uses Glide for dependency management. They must be installed:
If you wish to use the optional lint make target, you'll also need to install Golint:
$ go get -u github.com/golang/lint/golint
Building and Testing
To build Coconut, ensure $GOPATH is set, and clone into a standard Go workspace:
$ git clone git@github.com:pulumi/coconut $GOPATH/src/github.com/pulumi/coconut
At this point you should be able to build and run tests from the root directory:
$ cd $GOPATH/src/github.com/pulumi/coconut
$ glide update
$ make
This installs the coconut binary into $GOPATH/bin, which may now be run provided make exited successfully.
Installing the Runtime Libraries
By default, Coconut looks for its runtime libraries underneath /usr/local/coconut. $COCOPATH overrides this.
Please refer to the libraries README for details on additional installation requirements.
Debugging
The Coconut tools have extensive logging built in. In fact, we encourage liberal logging in new code, and adding new logging when debugging problems. This helps to ensure future debugging endeavors benefit from your sleuthing.
All logging is done using Google's Glog library. It is relatively bare-bones, and adds basic leveled logging, stack dumping, and other capabilities beyond what Go's built-in logging routines offer.
The Coconut command line has two flags that control this logging and that can come in handy when debugging problems. The
--logtostderr flag spews directly to stderr, rather than the default of logging to files in your temp directory. And
the --verbose=n flag (-v=n for short) sets the logging level to n. Anything greater than 3 is reserved for
debug-level logging, greater than 5 is going to be quite verbose, and anything beyond 7 is extremely noisy.
For example, the command
$ coco eval --logtostderr -v=5
is a pretty standard starting point during debugging that will show a fairly comprehensive trace log of a compilation.