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Avoid local field accesses in nextString(char). This saves a modest 2%.

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This commit is contained in:
Jesse Wilson 2011-12-14 06:07:40 +00:00
parent d01d39aa26
commit b7c3e0067c
1 changed files with 22 additions and 12 deletions
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34
gson/src/main/java/com/google/gson/stream/JsonReader.java
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@ -991,40 +991,50 @@ public class JsonReader implements Closeable {
* malformed.
*/
private String nextString(char quote) throws IOException {
// Like nextNonWhitespace, this uses locals 'p' and 'l' to save inner-loop field access.
char[] buffer = this.buffer;
StringBuilder builder = null;
do {
while (true) {
int p = pos;
int l = limit;
/* the index of the first character not yet appended to the builder. */
int start = pos;
while (pos < limit) {
int c = buffer[pos++];
int start = p;
while (p < l) {
int c = buffer[p++];
if (c == quote) {
pos = p;
if (skipping) {
return "skipped!";
} else if (builder == null) {
return stringPool.get(buffer, start, pos - start - 1);
return stringPool.get(buffer, start, p - start - 1);
} else {
builder.append(buffer, start, pos - start - 1);
builder.append(buffer, start, p - start - 1);
return builder.toString();
}
} else if (c == '\\') {
pos = p;
if (builder == null) {
builder = new StringBuilder();
}
builder.append(buffer, start, pos - start - 1);
builder.append(buffer, start, p - start - 1);
builder.append(readEscapeCharacter());
start = pos;
p = pos;
l = limit;
start = p;
}
}
if (builder == null) {
builder = new StringBuilder();
}
builder.append(buffer, start, pos - start);
} while (fillBuffer(1));
throw syntaxError("Unterminated string");
builder.append(buffer, start, p - start);
pos = p;
if (!fillBuffer(1)) {
throw syntaxError("Unterminated string");
}
}
}
/**