com.blazebit.persistence.impl.util.QuotedIdentifierAwarePatternFinder Maven / Gradle / Ivy
/*
* Copyright 2014 - 2019 Blazebit.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.blazebit.persistence.impl.util;
/**
* @author Christian Beikov
* @since 1.2.0
*/
public class QuotedIdentifierAwarePatternFinder extends AbstractPatternFinder {
private final PatternFinder delegate;
public QuotedIdentifierAwarePatternFinder(PatternFinder delegate) {
this.delegate = delegate;
}
@Override
public int indexIn(CharSequence text, int start, int end) {
do {
int index = delegate.indexIn(text, start, end);
if (index == -1 || index == start) {
return index;
}
// Check the quote modes from start to index
QuoteMode mode = QuoteMode.NONE;
for (int i = start; i < index; i++) {
mode = mode.onChar(text.charAt(i));
}
// If the mode is none, return the index
if (mode == QuoteMode.NONE) {
return index;
}
// Otherwise increment start to the index at which the quote mode is none again
for (start = index; start < end; start++) {
mode = mode.onChar(text.charAt(start));
if (mode == QuoteMode.NONE) {
start++;
break;
}
}
} while (start < end);
return -1;
}
@Override
public int indexIn(char[] text, int start, int end) {
do {
int index = delegate.indexIn(text, start, end);
if (index == -1 || index == start) {
return index;
}
// Check the quote modes from start to index
QuoteMode mode = QuoteMode.NONE;
for (int i = start; i < index; i++) {
mode = mode.onChar(text[i]);
}
// If the mode is none, return the index
if (mode == QuoteMode.NONE) {
return index;
}
// Otherwise increment start to the index at which the quote mode is none again
for (start = index; start < end; start++) {
mode = mode.onChar(text[start]);
if (mode == QuoteMode.NONE) {
start++;
break;
}
}
} while (start < end);
return -1;
}
}