package ctrlflow

import "golang.org/x/tools/go/analysis/passes/ctrlflow"

Package ctrlflow is an analysis that provides a syntactic control-flow graph (CFG) for the body of a function. It records whether a function cannot return. By itself, it does not report any diagnostics.

Index ¶

• Variables
• type CFGs
• func (c *CFGs) FuncDecl(decl *ast.FuncDecl) *cfg.CFG
• func (c *CFGs) FuncLit(lit *ast.FuncLit) *cfg.CFG

Package Files ¶

ctrlflow.go

Variables ¶

var Analyzer = &analysis.Analyzer{
    Name:       "ctrlflow",
    Doc:        "build a control-flow graph",
    Run:        run,
    ResultType: reflect.TypeOf(new(CFGs)),
    FactTypes:  []analysis.Fact{new(noReturn)},
    Requires:   []*analysis.Analyzer{inspect.Analyzer},
}

type CFGs ¶ Uses

type CFGs struct {
    // contains filtered or unexported fields
}

A CFGs holds the control-flow graphs for all the functions of the current package.

func (*CFGs) FuncDecl ¶ Uses

func (c *CFGs) FuncDecl(decl *ast.FuncDecl) *cfg.CFG

FuncDecl returns the control-flow graph for a named function. It returns nil if decl.Body==nil.

func (*CFGs) FuncLit ¶ Uses

func (c *CFGs) FuncLit(lit *ast.FuncLit) *cfg.CFG

FuncLit returns the control-flow graph for a literal function.