vendor: update to latest versions of everything

vendor/github.com/aws/aws-sdk-go/internal/ini/visitor.go

@@ -0,0 +1,161 @@
+package ini
+
+import (
+	"fmt"
+	"sort"
+)
+
+// Visitor is an interface used by walkers that will
+// traverse an array of ASTs.
+type Visitor interface {
+	VisitExpr(AST) error
+	VisitStatement(AST) error
+}
+
+// DefaultVisitor is used to visit statements and expressions
+// and ensure that they are both of the correct format.
+// In addition, upon visiting this will build sections and populate
+// the Sections field which can be used to retrieve profile
+// configuration.
+type DefaultVisitor struct {
+	scope    string
+	Sections Sections
+}
+
+// NewDefaultVisitor return a DefaultVisitor
+func NewDefaultVisitor() *DefaultVisitor {
+	return &DefaultVisitor{
+		Sections: Sections{
+			container: map[string]Section{},
+		},
+	}
+}
+
+// VisitExpr visits expressions...
+func (v *DefaultVisitor) VisitExpr(expr AST) error {
+	t := v.Sections.container[v.scope]
+	if t.values == nil {
+		t.values = values{}
+	}
+
+	switch expr.Kind {
+	case ASTKindExprStatement:
+		opExpr := expr.GetRoot()
+		switch opExpr.Kind {
+		case ASTKindEqualExpr:
+			children := opExpr.GetChildren()
+			if len(children) <= 1 {
+				return NewParseError("unexpected token type")
+			}
+
+			rhs := children[1]
+
+			if rhs.Root.Type() != TokenLit {
+				return NewParseError("unexpected token type")
+			}
+
+			key := EqualExprKey(opExpr)
+			v, err := newValue(rhs.Root.ValueType, rhs.Root.base, rhs.Root.Raw())
+			if err != nil {
+				return err
+			}
+
+			t.values[key] = v
+		default:
+			return NewParseError(fmt.Sprintf("unsupported expression %v", expr))
+		}
+	default:
+		return NewParseError(fmt.Sprintf("unsupported expression %v", expr))
+	}
+
+	v.Sections.container[v.scope] = t
+	return nil
+}
+
+// VisitStatement visits statements...
+func (v *DefaultVisitor) VisitStatement(stmt AST) error {
+	switch stmt.Kind {
+	case ASTKindCompletedSectionStatement:
+		child := stmt.GetRoot()
+		if child.Kind != ASTKindSectionStatement {
+			return NewParseError(fmt.Sprintf("unsupported child statement: %T", child))
+		}
+
+		name := string(child.Root.Raw())
+		v.Sections.container[name] = Section{}
+		v.scope = name
+	default:
+		return NewParseError(fmt.Sprintf("unsupported statement: %s", stmt.Kind))
+	}
+
+	return nil
+}
+
+// Sections is a map of Section structures that represent
+// a configuration.
+type Sections struct {
+	container map[string]Section
+}
+
+// GetSection will return section p. If section p does not exist,
+// false will be returned in the second parameter.
+func (t Sections) GetSection(p string) (Section, bool) {
+	v, ok := t.container[p]
+	return v, ok
+}
+
+// values represents a map of union values.
+type values map[string]Value
+
+// List will return a list of all sections that were successfully
+// parsed.
+func (t Sections) List() []string {
+	keys := make([]string, len(t.container))
+	i := 0
+	for k := range t.container {
+		keys[i] = k
+		i++
+	}
+
+	sort.Strings(keys)
+	return keys
+}
+
+// Section contains a name and values. This represent
+// a sectioned entry in a configuration file.
+type Section struct {
+	Name   string
+	values values
+}
+
+// Has will return whether or not an entry exists in a given section
+func (t Section) Has(k string) bool {
+	_, ok := t.values[k]
+	return ok
+}
+
+// ValueType will returned what type the union is set to. If
+// k was not found, the NoneType will be returned.
+func (t Section) ValueType(k string) (ValueType, bool) {
+	v, ok := t.values[k]
+	return v.Type, ok
+}
+
+// Int returns an integer value at k
+func (t Section) Int(k string) int64 {
+	return t.values[k].IntValue()
+}
+
+// Float64 returns a float value at k
+func (t Section) Float64(k string) float64 {
+	return t.values[k].FloatValue()
+}
+
+// String returns the string value at k
+func (t Section) String(k string) string {
+	_, ok := t.values[k]
+	if !ok {
+		return ""
+	}
+	return t.values[k].StringValue()
+}