Commit Graph

57 Commits

Author SHA1 Message Date
Alan Donovan ef4a2a23bb go/analysis/analysistest: fix tests on MS Windows
CL 137735 only fixed Darwin, and was submitted prematurely.

Change-Id: Idf9706ab2dc6ef716471cd6a2089bb0be63a54a2
Reviewed-on: https://go-review.googlesource.com/137835
Reviewed-by: Michael Matloob <matloob@golang.org>
2018-09-26 20:30:08 +00:00
Alan Donovan 34cd4017e8 go/analysis/analysistest/analysistest: fix test on non-Linux
The test's pathname sanitization heuristically assumed that $TMPDIR
contained /tmp, which is not the case on Darwin or Windows. Now we
pass it the precise directory prefix to strip off.

Fixes golang/go#27877

Change-Id: I85167d721ebb9c4f6d74016a00025fd726939e47
Reviewed-on: https://go-review.googlesource.com/137735
Run-TryBot: Andrew Bonventre <andybons@golang.org>
Reviewed-by: Alan Donovan <adonovan@google.com>
2018-09-26 20:13:27 +00:00
Alan Donovan c756801b01 go/analysis/internal/checker: fix go1.10 build
...by removing references to trace API for now.

Change-Id: Ide6bbbfd98e15a3773b4a10232bcbf2dc2153341
Reviewed-on: https://go-review.googlesource.com/137615
Reviewed-by: Alan Donovan <adonovan@google.com>
2018-09-26 13:06:41 +00:00
Alan Donovan d5fdb01c2f go/analysis/internal/checker: analysis driver based on go/packages
Package checker is a driver for the analysis API.
It is an internal package, but is exposed by three different APIs:
analysistest, singlechecker, and multichecker.

Checker uses go/packages to load the specified packages (plus their
dependencies, if any analysis uses facts) from source code.

It constructs a graph of actions (analysis passes), whose dependency
edges may be "horizontal", when one analyzer depends on the output of
another applied to the same package, or "vertical", when an an
analyzer consumes facts produced by the same analyzer applied to a
dependency package.
The graph is executed in parallel, unless -debug=p.

Facts are passed from one pass to another in memory.
If -debug=s, facts are serialized, to exercise that logic.

Findings are printed at the end.
The -json flag selects JSON output.

Use -debug=t to print timing information.
Always use -debug=tp, for sequential mode, when timing.

Also:
- analysistest:  a wrapper for testing checkers
- multichecker:  a wrapper for writing multi-checker tools
                 Analysis flags are prefixed by name: -findcall.name=foo.
- cmd/analyze:   a command-line tool based on multichecker
- singlechecker: a wrapper for writing single-checker tools
                 Analysis flags are unprefixed: -name=foo.
- passes/findcall/cmd/findcall: a standalone tool for the findcall analysis
- tests for findcall
- tests for pkgfact

Change-Id: Icfd4a49cee17e7de1ddb6ec15a62dc667fb2db04
Reviewed-on: https://go-review.googlesource.com/135679
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2018-09-26 01:25:07 +00:00
Alan Donovan 31d48d9a8c go/analysis: more API renamings:
Info -> TypesInfo
              Syntax -> Files
          Diagnostic -> Finding

Also, diagnostics are now reported by calling Pass.Report (or Reportf).

Change-Id: Id5e0745fca914699a6a64be3554049ffc02e822b
Reviewed-on: https://go-review.googlesource.com/137395
Reviewed-by: Michael Matloob <matloob@golang.org>
2018-09-25 20:33:08 +00:00
Alan Donovan e2857128af go/analysis: several API renamings
Analysis -> Analyzer
                 Unit     -> Pass
                 Output   -> Result
                 Inputs   -> ResultOf
                 Lemma    -> Fact
 Set{Object,Package}Lemma -> Export{Object,Package}Fact
    {Object,Package}Lemma -> Import{Object,Package}Fact
               LemmaTypes -> UsesFacts bool
                 plugins/ -> passes/

Notes:
- Unit.Output is no longer a field; it's the result of calling Analyzer.Run.
- Because analyzers no longer declare their LemmaTypes, they, not the
  driver, are now responsible for registering Fact types with Gob.

A follow-up change will additionally rename:

                  Finding -> Report
              Pass.Syntax -> Pass.Files
                Pass.Info -> Pass.TypesInfo

Change-Id: Iccbdadbea5a0aafe732e23a344dd57fd93681931
Reviewed-on: https://go-review.googlesource.com/137095
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2018-09-25 16:28:27 +00:00
Alan Donovan 9f3b32b5c4 go/analysis: a new API for analysis tools
This CL contains just the API, the validate function,
and two example analyses, findcall and pkglemma.

Change-Id: Ia1f2652647050b1e0e15dad8b9ae10cf1a5fbdbc
Synopsis: go-review.googlesource.com/c/tools/+/134935
Design:   docs.google.com/document/d/1-azPLXaLgTCKeKDNg0HVMq2ovMlD-e7n1ZHzZVzOlJk
Reviewed-on: https://go-review.googlesource.com/135635
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2018-09-17 22:09:49 +00:00