func (p *parser) parseParamDecl(n *parse.Node, scope *ast.Scope) *ast.Field {
field := ast.Field{}
if n.Child(0).Is(type_) {
field.Type = p.parseType(n.Child(0))
} else {
field.Names = p.parseIdentList(n.Child(0))
if n.Child(1).Is(type_) {
field.Type = p.parseType(n.Child(1))
} else {
// TODO ...
field.Type = p.parseType(n.Child(2))
}
}
p.declare(field, nil, scope, ast.Var, field.Names...)
if field.Type != nil {
p.resolve(field.Type)
}
return &field
}
// Struct creates a struct{} expression. The arguments are a series
// of name/type/tag tuples. Name must be of type *ast.Ident, type
// must be of type ast.Expr, and tag must be of type *ast.BasicLit,
// The number of arguments must be a multiple of 3, or a run-time
// panic will occur.
func Struct(args ...ast.Expr) *ast.StructType {
fields := new(ast.FieldList)
if len(args)%3 != 0 {
panic("Number of args to FieldList must be a multiple of 3, got " + strconv.Itoa(len(args)))
}
for i := 0; i < len(args); i += 3 {
var field ast.Field
name, typ, tag := args[i], args[i+1], args[i+2]
if name != nil {
field.Names = []*ast.Ident{name.(*ast.Ident)}
}
if typ != nil {
field.Type = typ
}
if tag != nil {
field.Tag = tag.(*ast.BasicLit)
}
fields.List = append(fields.List, &field)
}
return &ast.StructType{Fields: fields}
}