Rename |generateCache{Header,Footer}| to |generateRule{Header,Footer}|
and change their responsibility to generate overall header/footer of a
rule function (when optimizing for speed) or the |peg$parseRule|
function (when optimizing for speed). This creates a natural place where
to generate tracing code (coming soon).
Action and predicate code can now see variables defined in expressions
"above" them.
Based on a pull request by Bryon Vandiver (@asterick):
https://github.com/pegjs/pegjs/pull/180Fixes#316.
The |visitor.build| function now supplies default visit functions for
visitors it builds. These functions don't do anything beside traversing
the tree and passing arguments around to child visit functions.
Having the default visit functions allowed to simplify several visitors.
Travis CI builds with Node.js 0.8.x started to fail:
https://travis-ci.org/dmajda/pegjs/jobs/26691570
Rather than investigating what's wrong I decided to stop supporting Node
0.8.x. Node.js 0.10.x is here for over a year, which should be enough
time for everyone to upgrade in the fast-paced Node.js world.
The generated parser API specs are mostly extracted from
generated-parser.spec.js, which got renamed to
generated-parser-behavior.spec.js to better reflect its purpose.
Unit specs are unit tests of internal stuff. API specs are tests of the
user-visible APIs and behavior.
I think it makes sense to make this distinction because then the public
API line is more clearly visible e.g. when using the specs as
documentation.
The TEXT instruction now replaces position at the top of the stack with
the input from that position until the current position. This is simpler
and cleaner semantics than the previous one, where TEXT also popped an
additional value from the stack and kept the position there.
Implement the following bytecode instructions:
* PUSH_UNDEFINED
* PUSH_NULL
* PUSH_FAILED
* PUSH_EMPTY_ARRAY
These instructions push simple JavaSccript values to the stack directly,
without going through constants. This makes the bytecode slightly
shorter and the bytecode generator somewhat simpler.
Also note that PUSH_EMPTY_ARRAY allows us to avoid a hack which protects
the [] constant from modification.
David Majda