dx StringId StringData的生成

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String Id的生成

131 sections =new Section[] {

132 header,stringIds, typeIds, protoIds, fieldIds, methodIds,

133 classDefs, wordData, typeLists, stringData, byteData,

134 classData, map };

com/android/dx/dex/file/StringIdsSection.java

100 public StringIdItem intern(Stringstring) {

101 return intern(new StringIdItem(new CstString(string)));

102 }

104 /**

105 * Interns an element into this instance.

106 *

107 * @param string {@code non-null;} the string to intern, as a constant

108 * @return {@code non-null;} the interned string

109 */

110 public StringIdItem intern(CstStringstring) {

111 return intern(new StringIdItem(string));

112 }

113

114 /**

115 * Interns an element into this instance.

116 *

117 * @param string {@code non-null;} the string to intern

118 * @return {@code non-null;} the interned string

119 */

120 public StringIdItem intern(StringIdItemstring) {

121 if (string == null) {

122 throw newNullPointerException("string == null");

123 }

124

125 throwIfPrepared();

126

127 CstStringvalue = string.getValue();

128 StringIdItem already = strings.get(value);

129

130 if (already != null) {

131 return already;

132 }

133

134 strings.put(value, string);

135 return string;

136 }

StringData的生成

492 privateByteArrayAnnotatedOutput toDex0(boolean annotate,

493 boolean verbose){

500 classDefs.prepare();

501 classData.prepare();

502 wordData.prepare();

503 byteData.prepare();

504 methodIds.prepare();

505 fieldIds.prepare();

506 protoIds.prepare();

507 typeLists.prepare();

508 typeIds.prepare();

509 stringIds.prepare();

510 stringData.prepare();

511 header.prepare();

Section.java

211 public final voidprepare() {

212 throwIfPrepared();

213 prepare0();

214 prepared = true;

215 }

com/android/dx/dex/file/UniformItemSection.java

69 protected final void prepare0(){

70 DexFile file = getFile();

72 orderItems();

74 for (Item one : items()) {

75 one.addContents(file);

76 }

77 }

com/android/dx/dex/file/StringIdItem.java

86 public void addContents(DexFilefile) {

87 if (data == null) {

88 // The string data hasn't yet beenadded, so add it.

89 MixedItemSection stringData =file.getStringData();

90 data = new StringDataItem(value);

91 stringData.add(data);

92 }

93 }

com/android/dx/dex/file/StringDataItem.java

37 public StringDataItem(CstString value) {

38 super(1, writeSize(value));

40 this.value = value;

41 }

43 /**

44 * Gets the write size for a given value.

45 *

46 *@param value {@code non-null;} the string value

47 * @return {@code >= 2}; the write size, in bytes

48 */

49 private static int writeSize(CstStringvalue) {

50 int utf16Size = value.getUtf16Size();

52 // The +1 is for the '\0' terminationbyte.

53 returnLeb128.unsignedLeb128Size(utf16Size)

54 + value.getUtf8Size() + 1;

55 }

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