897f6677ae
The Uses, Defs and Scope information provided by go/types is
inadequate for answering "what if?" queries about the
structure of the lexical environment.
In this code, for example,
var x int
func f() {
print(x)
x := ""
print(x)
}
the two referring Idents x appear at the same lexical depth,
inside the function f's Scope object, yet they resolve to
different objects.
This package associates a lexical.Environment instance with
every reference to capture these differences. Each
environment is a linked list of enclosing Blocks, and for each
block, a number indicating what prefix of its bindings are
visible. (Zero for the first 'x' reference above, 1 for the
second.)
+ Smoke test over stdlib.
This functionality could be integrated with the type checker
in lieu of the not-so-useful types.Info.Scopes data, at little
extra cost in code or in running time/space. We should talk
about that.
LGTM=sameer
R=gri, sameer
CC=golang-codereviews
https://golang.org/cl/143790043
|
||
|---|---|---|
| astutil | ||
| blog | ||
| cmd | ||
| container/intsets | ||
| cover | ||
| dashboard | ||
| go | ||
| godoc | ||
| imports | ||
| oracle | ||
| playground | ||
| present | ||
| refactor | ||
| .hgignore | ||
| AUTHORS | ||
| CONTRIBUTORS | ||
| LICENSE | ||
| PATENTS | ||
| README | ||
| codereview.cfg | ||
README
This subrepository holds the source for various packages and tools that support the Go programming language. Some of the tools, godoc and vet for example, are included in binary Go distributions. Others, including the Go oracle and the test coverage tool, can be fetched with "go get". Packages include a type-checker for Go and an implementation of the Static Single Assignment form (SSA) representation for Go programs. To submit changes to this repository, see http://golang.org/doc/contribute.html.