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Code Issues Releases Wiki Activity

支持Comment的Parse

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git-svn-id: http://code.alibabatech.com/svn/druid/trunk@117 b9813039-fb51-4c41-a8b9-e21c2acb5095
This commit is contained in:
wenshao
2011-05-18 09:39:29 +00:00
parent 72df0be9e3
commit 43f2b023e8
6 changed files with 184 additions and 59 deletions
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src/main/java/com/alibaba/druid/sql/dialect/mysql/parser/MySqlLexer.java
+24 -24
View File
@@ -124,15 +124,15 @@ public class MySqlLexer extends Lexer {
if (ch == '`') {
int hash = first;
offsetCache = curIndex;
sizeCache = 1;
np = bp;
sp = 1;
char ch;
for (;;) {
ch = sql[++curIndex];
ch = buf[++bp];
if (ch == '`') {
sizeCache++;
ch = sql[++curIndex];
sp++;
ch = buf[++bp];
break;
} else if (ch == EOI) {
throw new SQLParseException("illegal identifier");
@@ -140,13 +140,13 @@ public class MySqlLexer extends Lexer {
hash = 31 * hash + ch;
sizeCache++;
sp++;
continue;
}
this.ch = sql[curIndex];
this.ch = buf[bp];
stringVal = symbolTable.addSymbol(sql, offsetCache, sizeCache, hash);
stringVal = symbolTable.addSymbol(buf, np, sp, hash);
Token tok = keywods.getKeyword(stringVal);
if (tok != null) {
token = tok;
@@ -162,11 +162,11 @@ public class MySqlLexer extends Lexer {
int hash = first;
offsetCache = curIndex;
sizeCache = 1;
np = bp;
sp = 1;
char ch;
for (;;) {
ch = sql[++curIndex];
ch = buf[++bp];
if (!isIdentifierChar(ch)) {
break;
@@ -174,13 +174,13 @@ public class MySqlLexer extends Lexer {
hash = 31 * hash + ch;
sizeCache++;
sp++;
continue;
}
this.ch = sql[curIndex];
this.ch = buf[bp];
stringVal = symbolTable.addSymbol(sql, offsetCache, sizeCache, hash);
stringVal = symbolTable.addSymbol(buf, np, sp, hash);
Token tok = keywods.getKeyword(stringVal);
if (tok != null) {
token = tok;
@@ -191,21 +191,21 @@ public class MySqlLexer extends Lexer {
}
protected void scanString() {
offsetCache = curIndex;
np = bp;
boolean hasSpecial = false;
for (;;) {
if (curIndex >= sqlLength) {
if (bp >= buflen) {
lexError(tokenPos, "unclosed.str.lit");
return;
}
ch = sql[++curIndex];
ch = buf[++bp];
if (ch == '\\') {
scanChar();
if (!hasSpecial) {
System.arraycopy(sql, offsetCache + 1, sbuf, 0, sizeCache);
System.arraycopy(buf, np + 1, sbuf, 0, sp);
hasSpecial = true;
}
@@ -250,7 +250,7 @@ public class MySqlLexer extends Lexer {
token = LITERAL_CHARS;
break;
} else {
System.arraycopy(sql, offsetCache + 1, sbuf, 0, sizeCache);
System.arraycopy(buf, np + 1, sbuf, 0, sp);
hasSpecial = true;
putChar('\'');
continue;
@@ -258,21 +258,21 @@ public class MySqlLexer extends Lexer {
}
if (!hasSpecial) {
sizeCache++;
sp++;
continue;
}
if (sizeCache == sbuf.length) {
if (sp == sbuf.length) {
putChar(ch);
} else {
sbuf[sizeCache++] = ch;
sbuf[sp++] = ch;
}
}
if (!hasSpecial) {
stringVal = new String(sql, offsetCache + 1, sizeCache);
stringVal = new String(buf, np + 1, sp);
} else {
stringVal = new String(sbuf, 0, sizeCache);
stringVal = new String(sbuf, 0, sp);
}
}
}