This is the command oracle that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
oracle - a tool for answering questions about Go source code
SYNOPSIS
oracle [ flag ... ] mode args ...
DESCRIPTION
The -format flag controls the output format:
plain an editor-friendly format in which every line of output
is of the form "pos: text", where pos is "-" if unknown.
json structured data in JSON syntax.
xml structured data in XML syntax.
The -pos flag is required in all modes except 'callgraph'.
The mode argument determines the query to perform:
callees show possible targets of selected function call
callers show possible callers of selected function
callgraph show complete callgraph of program
callstack show path from callgraph root to selected function
describe describe selected syntax: definition, methods, etc
freevars show free variables of selection
implements show 'implements' relation for selected package
peers show send/receive corresponding to selected channel op
referrers show all refs to entity denoted by selected identifier
The user manual is available here: http://golang.org/s/oracle-user-manual
OPTIONS
-cpuprofile
write cpu profile to file
-format
Output format. One of {plain,json,xml}.
-pos Filename and byte offset or extent of a syntax element about which to query, e.g.
foo.go:#123,#456, bar.go:#123.
-ptalog
Location of the points-to analysis log file, or empty to disable logging.
-reflect
Analyze reflection soundly (slow).
EXAMPLES
Describe the syntax at offset 530 in this file (an import spec):
oracle -pos=src/code.google.com/p/go.tools/cmd/oracle/main.go:#530 describe
code.google.com/p/go.tools/cmd/oracle
Print the callgraph of the trivial web-server in JSON format:
oracle -format=json src/pkg/net/http/triv.go callgraph
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