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Code Issues Releases Wiki Activity

refactor Lexer

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This commit is contained in:
wenshao
2012-11-10 18:55:31 +08:00
parent ccb314e3b8
commit 799fe95703
6 changed files with 266 additions and 284 deletions
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src/main/java/com/alibaba/druid/sql/dialect/postgresql/parser/PGLexer.java
+12 -12
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@@ -70,24 +70,24 @@ public class PGLexer extends Lexer {
}
protected void scanString() {
np = bp;
mark = pos;
boolean hasSpecial = false;
for (;;) {
if (isEOF()) {
lexError(tokenPos, "unclosed.str.lit");
lexError("unclosed.str.lit");
return;
}
ch = charAt(++bp);
ch = charAt(++pos);
if (ch == '\\') {
scanChar();
if (!hasSpecial) {
if (sbuf == null) {
sbuf = new char[32];
if (buf == null) {
buf = new char[32];
}
arraycopy(np + 1, sbuf, 0, sp);
arraycopy(mark + 1, buf, 0, bufPos);
hasSpecial = true;
}
@@ -132,7 +132,7 @@ public class PGLexer extends Lexer {
token = LITERAL_CHARS;
break;
} else {
arraycopy(np + 1, sbuf, 0, sp);
arraycopy(mark + 1, buf, 0, bufPos);
hasSpecial = true;
putChar('\'');
continue;
@@ -140,21 +140,21 @@ public class PGLexer extends Lexer {
}
if (!hasSpecial) {
sp++;
bufPos++;
continue;
}
if (sp == sbuf.length) {
if (bufPos == buf.length) {
putChar(ch);
} else {
sbuf[sp++] = ch;
buf[bufPos++] = ch;
}
}
if (!hasSpecial) {
stringVal = subString(np + 1, sp);
stringVal = subString(mark + 1, bufPos);
} else {
stringVal = new String(sbuf, 0, sp);
stringVal = new String(buf, 0, bufPos);
}
}
}