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go/cmd/gotype/doc.go
Robert Griesemer 0c141425f6 go.tools/cmd/gotype: parse in parallel
Performance increase is much smaller than expected;
need to investigate. Possibly, repeatedly (for each
line) accessing file sets from multiple goroutines
(in the scanner) is a bottle neck; or perhaps i/o.

R=adonovan
CC=golang-dev
https://golang.org/cl/23090043
2013-11-07 13:32:02 -08:00

61 lines
1.4 KiB
Go

// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
/*
The gotype command does syntactic and semantic analysis of Go files
and packages like the front-end of a Go compiler. Errors are reported
if the analysis fails; otherwise gotype is quiet (unless -v is set).
Without a list of paths, gotype reads from standard input, which
must provide a single Go source file defining a complete package.
If a single path is specified that is a directory, gotype checks
the Go files in that directory; they must all belong to the same
package.
Otherwise, each path must be the filename of Go file belonging to
the same package.
Usage:
gotype [flags] [path...]
The flags are:
-a
use all (incl. _test.go) files when processing a directory
-e
report all errors (not just the first 10)
-v
verbose mode
Debugging flags:
-seq
parse sequentially, rather than in parallel
-ast
print AST (forces -seq)
-trace
print parse trace (forces -seq)
-comments
parse comments (ignored unless -ast or -trace is provided)
Examples:
To check the files a.go, b.go, and c.go:
gotype a.go b.go c.go
To check an entire package in the directory dir and print the processed files:
gotype -v dir
To check an entire package including tests in the local directory:
gotype -a .
To verify the output of a pipe:
echo "package foo" | gotype
*/
package main