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Adds java.lang.StringBuilder methods

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This commit is contained in:
konsoletyper 2014-03-11 17:14:31 +04:00
parent d870060187
commit 34b7d9178d
3 changed files with 127 additions and 0 deletions
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45
teavm-classlib/src/main/java/org/teavm/classlib/java/lang/TAbstractStringBuilder.java
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@ -57,6 +57,10 @@ class TAbstractStringBuilder extends TObject implements TSerializable, TCharSequ
}
public TAbstractStringBuilder(TString value) {
this((TCharSequence)value);
}
public TAbstractStringBuilder(TCharSequence value) {
buffer = new char[value.length()];
for (int i = 0; i < buffer.length; ++i) {
buffer[i] = value.charAt(i);
@ -585,6 +589,10 @@ class TAbstractStringBuilder extends TObject implements TSerializable, TCharSequ
return this;
}
protected TAbstractStringBuilder append(char[] chars) {
return append(chars, 0, chars.length);
}
@Override
public TCharSequence subSequence(int start, int end) {
// TODO: implement
@ -615,4 +623,41 @@ class TAbstractStringBuilder extends TObject implements TSerializable, TCharSequ
--length;
return this;
}
public TAbstractStringBuilder delete(int start, int end) {
if (start > end || start >= length) {
throw new TStringIndexOutOfBoundsException();
}
if (start == end) {
return this;
}
int sz = length - end;
length -= end - start;
for (int i = 0; i < sz; ++i) {
buffer[start++] = buffer[end++];
}
return this;
}
public TAbstractStringBuilder replace(int start, int end, TString str) {
int oldSize = end - start;
if (str.length() > oldSize) {
insertSpace(end, start + str.length());
} else if (str.length() < oldSize) {
delete(start + str.length(), end);
}
for (int i = 0; i < str.length(); ++i) {
buffer[start++] = str.charAt(i);
}
return this;
}
private void insertSpace(int start, int end) {
int sz = length - end;
ensureCapacity(buffer.length + sz);
for (int i = sz - 1; i >= 0; --i) {
buffer[end + i] = buffer[start + i];
}
length += end - start;
}
}

22
teavm-classlib/src/main/java/org/teavm/classlib/java/lang/TStringBuilder.java
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@ -32,6 +32,10 @@ public class TStringBuilder extends TAbstractStringBuilder implements TAppendabl
super(value);
}
public TStringBuilder(TCharSequence value) {
super(value);
}
@Override
public TStringBuilder append(TString string) {
super.append(string);
@ -74,6 +78,12 @@ public class TStringBuilder extends TAbstractStringBuilder implements TAppendabl
return this;
}
@Override
public TStringBuilder append(char[] chars) {
super.append(chars);
return this;
}
@Override
public TStringBuilder appendCodePoint(int codePoint) {
super.appendCodePoint(codePoint);
@ -104,6 +114,18 @@ public class TStringBuilder extends TAbstractStringBuilder implements TAppendabl
return this;
}
@Override
public TStringBuilder delete(int start, int end) {
super.delete(start, end);
return this;
}
@Override
public TStringBuilder replace(int start, int end, TString str) {
super.replace(start, end, str);
return this;
}
@Override
public TStringBuilder deleteCharAt(int index) {
deleteCharAt(index);

60
teavm-classlib/src/test/java/org/teavm/classlib/java/lang/StringBuilderTest.java
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@ -282,4 +282,64 @@ public class StringBuilderTest {
assertEquals(56178, sb.charAt(0));
assertEquals(56972, sb.charAt(1));
}
@Test
public void deletesRange() {
StringBuilder sb = new StringBuilder();
for (int i = 0; i <= 9; ++i) {
sb.append((char)('0' + i));
}
sb.delete(4, 6);
assertEquals(8, sb.length());
assertEquals('0', sb.charAt(0));
assertEquals('3', sb.charAt(3));
assertEquals('6', sb.charAt(4));
assertEquals('9', sb.charAt(7));
}
@Test
public void replacesRangeWithSequenceOfSameLength() {
StringBuilder sb = new StringBuilder();
for (int i = 0; i <= 9; ++i) {
sb.append((char)('0' + i));
}
sb.replace(4, 6, "ab");
assertEquals(10, sb.length());
assertEquals('0', sb.charAt(0));
assertEquals('3', sb.charAt(3));
assertEquals('a', sb.charAt(4));
assertEquals('6', sb.charAt(6));
assertEquals('9', sb.charAt(9));
}
@Test
public void replacesRangeWithShorterSequence() {
StringBuilder sb = new StringBuilder();
for (int i = 0; i <= 9; ++i) {
sb.append((char)('0' + i));
}
sb.replace(4, 6, "a");
assertEquals(9, sb.length());
assertEquals('0', sb.charAt(0));
assertEquals('3', sb.charAt(3));
assertEquals('a', sb.charAt(4));
assertEquals('6', sb.charAt(5));
assertEquals('9', sb.charAt(8));
}
@Test
public void replacesRangeWithLongerSequence() {
StringBuilder sb = new StringBuilder();
for (int i = 0; i <= 9; ++i) {
sb.append((char)('0' + i));
}
sb.replace(4, 6, "abc");
assertEquals(11, sb.length());
assertEquals('0', sb.charAt(0));
assertEquals('3', sb.charAt(3));
assertEquals('a', sb.charAt(4));
assertEquals('c', sb.charAt(6));
assertEquals('6', sb.charAt(7));
assertEquals('9', sb.charAt(10));
}
}