Mercurial > hg > ucis.core

comparison Pml/PmlBuilder.cs @ 0:3ab940a0c7a0

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Initial commit
author Ivo Smits <Ivo@UCIS.nl>
date Tue, 11 Sep 2012 16:28:53 +0200
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-1:000000000000 0:3ab940a0c7a0
1 using System;
2 using System.Collections.Generic;
3 using System.Text;
4
5 namespace UCIS.Pml {
6 public class PmlBuilder {
7 private IPmlWriter pWriter;
8 private Stack<PmlElement> pStack = new Stack<PmlElement>();
9
10 public PmlBuilder(IPmlWriter Writer) {
11 pWriter = Writer;
12 }
13 public PmlBuilder() {
14 pWriter = null;
15 }
16
17 public IPmlWriter BaseWriter {
18 get { return pWriter; }
19 set { pWriter = value; }
20 }
21
22 private PmlElement AddChildElement(PmlElement Element, bool AddToStack) {
23 return AddChildElement(Element, AddToStack, null);
24 }
25 private PmlElement AddChildElement(PmlElement Element, bool AddToStack, string ChildName) {
26 PmlElement Parent;
27 if (pStack.Count > 0) {
28 Parent = pStack.Peek();
29 if (Parent is PmlDictionary) {
30 if (ChildName == null) throw new ArgumentNullException("ChildName", "Dictionary items need a Name");
31 ((PmlDictionary)Parent).Add(ChildName, Element);
32 } else if (Parent is PmlCollection) {
33 if (ChildName != null) throw new ArgumentOutOfRangeException("ChildName", "Can not add named element to a Collection");
34 ((PmlCollection)Parent).Add(Element);
35 } else {
36 throw new InvalidOperationException("Invalid Element type in stack: " + Parent.Type.ToString());
37 }
38 } else {
39 if (ChildName != null) {
40 throw new ArgumentOutOfRangeException("ChildName", "Can not create named element without container (Dictionary)");
41 } else if (!AddToStack) {
42 pWriter.WriteMessage(Element);
43 }
44 }
45 if (AddToStack) pStack.Push(Element);
46 return Element;
47 }
48
49 public PmlElement EndElement() {
50 if (pStack.Count > 0) {
51 PmlElement Element = pStack.Pop();
52 if (pStack.Count == 0) {
53 if (pWriter != null) pWriter.WriteMessage(Element);
54 }
55 return Element;
56 } else {
57 return null;
58 }
59 }
60 public PmlElement GetMessage() {
61 if (pStack.Count == 1) {
62 PmlElement Element = pStack.Pop();
63 return Element;
64 } else if (pStack.Count == 0) {
65 throw new InvalidOperationException("No stacked element. The top most element should not be ended. All elements, except Dictionary and Collection, are sent automatically.");
66 } else {
67 throw new InvalidOperationException("All elements, except for the top most element, should be ended.");
68 }
69 }
70
71 public PmlElement SendMessage() {
72 PmlElement Element;
73 if (pWriter == null) throw new NullReferenceException("Writer is not set");
74 Element = GetMessage();
75 pWriter.WriteMessage(Element);
76 return Element;
77 }
78
79 public PmlDictionary Dictionary() {
80 return (PmlDictionary)AddChildElement(new PmlDictionary(), true);
81 }
82 public PmlCollection Collection() {
83 return (PmlCollection)AddChildElement(new PmlCollection(), true);
84 }
85 public PmlString String(string Value) {
86 return (PmlString)AddChildElement(new PmlString(Value), false);
87 }
88 public PmlBinary Binary(byte[] Value) {
89 return (PmlBinary)AddChildElement(new PmlBinary(Value), false);
90 }
91 public PmlInteger Integer(UInt64 Value) {
92 return (PmlInteger)AddChildElement(new PmlInteger(Value), false);
93 }
94 public PmlInteger Integer(Int64 Value) {
95 return (PmlInteger)AddChildElement(new PmlInteger(Value), false);
96 }
97 public PmlNull Null() {
98 return (PmlNull)AddChildElement(new PmlNull(), false);
99 }
100 public PmlElement Element(PmlElement Child) {
101 return AddChildElement(Child, false);
102 }
103
104 public PmlDictionary Dictionary(string Name) {
105 return (PmlDictionary)AddChildElement(new PmlDictionary(), true, Name);
106 }
107 public PmlCollection Collection(string Name) {
108 return (PmlCollection)AddChildElement(new PmlCollection(), true, Name);
109 }
110 public PmlString String(string Name, string Value) {
111 return (PmlString)AddChildElement(new PmlString(Value), false, Name);
112 }
113 public PmlBinary Binary(string Name, byte[] Value) {
114 return (PmlBinary)AddChildElement(new PmlBinary(Value), false, Name);
115 }
116 public PmlInteger Integer(string Name, UInt64 Value) {
117 return (PmlInteger)AddChildElement(new PmlInteger(Value), false, Name);
118 }
119 public PmlInteger Integer(string Name, Int64 Value) {
120 return (PmlInteger)AddChildElement(new PmlInteger(Value), false, Name);
121 }
122 public PmlNull Null(string Name) {
123 return (PmlNull)AddChildElement(new PmlNull(), false, Name);
124 }
125 public PmlElement Element(string Name, PmlElement Child) {
126 return AddChildElement(Child, false, Name);
127 }
128 }
129 }