Esempio n. 1
0
func (p *printer) funcDecl(d *ast.FuncDecl) {
	p.setComment(d.Doc)
	p.print(d.Pos(), token.FUNC, blank)
	if d.Recv != nil {
		p.parameters(d.Recv) // method: print receiver
		p.print(blank)
	}
	p.expr(d.Name)
	p.signature(d.Type.Params, d.Type.Results)
	p.adjBlock(p.distanceFrom(d.Pos()), vtab, d.Body)
}
Esempio n. 2
0
// set creates the corresponding Func for f and adds it to mset.
// If there are multiple f's with the same name, set keeps the first
// one with documentation; conflicts are ignored.
//
func (mset methodSet) set(f *ast.FuncDecl) {
	name := f.Name.Name
	if g := mset[name]; g != nil && g.Doc != "" {
		// A function with the same name has already been registered;
		// since it has documentation, assume f is simply another
		// implementation and ignore it. This does not happen if the
		// caller is using go/build.ScanDir to determine the list of
		// files implementing a package.
		return
	}
	// function doesn't exist or has no documentation; use f
	recv := ""
	if f.Recv != nil {
		var typ ast.Expr
		// be careful in case of incorrect ASTs
		if list := f.Recv.List; len(list) == 1 {
			typ = list[0].Type
		}
		recv = recvString(typ)
	}
	mset[name] = &Func{
		Doc:  f.Doc.Text(),
		Name: name,
		Decl: f,
		Recv: recv,
		Orig: recv,
	}
	f.Doc = nil // doc consumed - remove from AST
}
Esempio n. 3
0
// readFunc processes a func or method declaration.
//
func (r *reader) readFunc(fun *ast.FuncDecl) {
	// strip function body
	fun.Body = nil

	// associate methods with the receiver type, if any
	if fun.Recv != nil {
		// method
		recvTypeName, imp := baseTypeName(fun.Recv.List[0].Type)
		if imp {
			// should not happen (incorrect AST);
			// don't show this method
			return
		}
		if typ := r.lookupType(recvTypeName); typ != nil {
			typ.methods.set(fun)
		}
		// otherwise ignore the method
		// TODO(gri): There may be exported methods of non-exported types
		// that can be called because of exported values (consts, vars, or
		// function results) of that type. Could determine if that is the
		// case and then show those methods in an appropriate section.
		return
	}

	// associate factory functions with the first visible result type, if any
	if fun.Type.Results.NumFields() >= 1 {
		res := fun.Type.Results.List[0]
		if len(res.Names) <= 1 {
			// exactly one (named or anonymous) result associated
			// with the first type in result signature (there may
			// be more than one result)
			if n, imp := baseTypeName(res.Type); !imp && r.isVisible(n) {
				if typ := r.lookupType(n); typ != nil {
					// associate function with typ
					typ.funcs.set(fun)
					return
				}
			}
		}
	}

	// just an ordinary function
	r.funcs.set(fun)
}