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Diffstat (limited to 'vendor/golang.org/x/tools/go/ssa/example_test.go')
| -rw-r--r-- | vendor/golang.org/x/tools/go/ssa/example_test.go | 138 |
1 files changed, 0 insertions, 138 deletions
diff --git a/vendor/golang.org/x/tools/go/ssa/example_test.go b/vendor/golang.org/x/tools/go/ssa/example_test.go deleted file mode 100644 index 31fa561..0000000 --- a/vendor/golang.org/x/tools/go/ssa/example_test.go +++ /dev/null @@ -1,138 +0,0 @@ -// Copyright 2013 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. - -package ssa_test - -import ( - "fmt" - "go/ast" - "go/importer" - "go/parser" - "go/token" - "go/types" - "os" - - "golang.org/x/tools/go/loader" - "golang.org/x/tools/go/ssa" - "golang.org/x/tools/go/ssa/ssautil" -) - -const hello = ` -package main - -import "fmt" - -const message = "Hello, World!" - -func main() { - fmt.Println(message) -} -` - -// This program demonstrates how to run the SSA builder on a single -// package of one or more already-parsed files. Its dependencies are -// loaded from compiler export data. This is what you'd typically use -// for a compiler; it does not depend on golang.org/x/tools/go/loader. -// -// It shows the printed representation of packages, functions, and -// instructions. Within the function listing, the name of each -// BasicBlock such as ".0.entry" is printed left-aligned, followed by -// the block's Instructions. -// -// For each instruction that defines an SSA virtual register -// (i.e. implements Value), the type of that value is shown in the -// right column. -// -// Build and run the ssadump.go program if you want a standalone tool -// with similar functionality. It is located at -// golang.org/x/tools/cmd/ssadump. -// -func ExampleBuildPackage() { - // Parse the source files. - fset := token.NewFileSet() - f, err := parser.ParseFile(fset, "hello.go", hello, parser.ParseComments) - if err != nil { - fmt.Print(err) // parse error - return - } - files := []*ast.File{f} - - // Create the type-checker's package. - pkg := types.NewPackage("hello", "") - - // Type-check the package, load dependencies. - // Create and build the SSA program. - hello, _, err := ssautil.BuildPackage( - &types.Config{Importer: importer.Default()}, fset, pkg, files, ssa.SanityCheckFunctions) - if err != nil { - fmt.Print(err) // type error in some package - return - } - - // Print out the package. - hello.WriteTo(os.Stdout) - - // Print out the package-level functions. - hello.Func("init").WriteTo(os.Stdout) - hello.Func("main").WriteTo(os.Stdout) - - // Output: - // - // package hello: - // func init func() - // var init$guard bool - // func main func() - // const message message = "Hello, World!":untyped string - // - // # Name: hello.init - // # Package: hello - // # Synthetic: package initializer - // func init(): - // 0: entry P:0 S:2 - // t0 = *init$guard bool - // if t0 goto 2 else 1 - // 1: init.start P:1 S:1 - // *init$guard = true:bool - // t1 = fmt.init() () - // jump 2 - // 2: init.done P:2 S:0 - // return - // - // # Name: hello.main - // # Package: hello - // # Location: hello.go:8:6 - // func main(): - // 0: entry P:0 S:0 - // t0 = new [1]interface{} (varargs) *[1]interface{} - // t1 = &t0[0:int] *interface{} - // t2 = make interface{} <- string ("Hello, World!":string) interface{} - // *t1 = t2 - // t3 = slice t0[:] []interface{} - // t4 = fmt.Println(t3...) (n int, err error) - // return -} - -// This program shows how to load a main package (cmd/cover) and all its -// dependencies from source, using the loader, and then build SSA code -// for the entire program. This is what you'd typically use for a -// whole-program analysis. -// -func ExampleLoadProgram() { - // Load cmd/cover and its dependencies. - var conf loader.Config - conf.Import("cmd/cover") - lprog, err := conf.Load() - if err != nil { - fmt.Print(err) // type error in some package - return - } - - // Create SSA-form program representation. - prog := ssautil.CreateProgram(lprog, ssa.SanityCheckFunctions) - - // Build SSA code for the entire cmd/cover program. - prog.Build() - - // Output: -} |