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EA-240119 - taking in account concatenation with empty string

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GitOrigin-RevId: 9dd8853c0d19b3b4f887dfdcf39d039f40627636
This commit is contained in:
Ilyas Selimov
2020-10-12 14:46:53 +07:00
committed by intellij-monorepo-bot
parent 100fd1f0f7
commit bdced67aaf
2 changed files with 33 additions and 20 deletions
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24
RegExpSupport/src/org/intellij/lang/regexp/inspection/ShredManager.java
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@@ -3,6 +3,7 @@ package org.intellij.lang.regexp.inspection;
import com.intellij.lang.injection.InjectedLanguageManager;
import com.intellij.openapi.util.Ref;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiLanguageInjectionHost;
import com.intellij.psi.PsiLiteralValue;
@@ -97,20 +98,20 @@ class ShredManager {
@Override
public boolean hasNext() {
return myShredIndex != -1 && extractShredText(myShreds.get(myShredIndex)) != null;
return myShredIndex != -1 && findFirstNonEmptyShredIndex() != -1;
}
@Override
@NotNull
public ShredInfo next() {
if (myShredIndex == -1) throw new IllegalStateException("Iterator doesn't contain any elements");
if (myShredIndex == -1) throw new IllegalStateException("Iterator doesn't contain any shreds");
myShredIndex = findFirstNonEmptyShredIndex();
if (myShredIndex == -1) throw new IllegalStateException("Iterator doesn't contain non-empty shreds");
if (myShredText == null) {
myShredText = extractShredText(myShreds.get(myShredIndex));
if (myShredText == null) throw new IllegalStateException("Iterator#hasNext() must be called before Iterator#next()");
if (myShredText.length() > 0) {
mySymbolIndex = 0;
}
if (StringUtil.isEmpty(myShredText)) throw new IllegalStateException("Current shred text is empty");
mySymbolIndex = 0;
}
int shredIndex = myShredIndex;
char shredSymbol = myShredText.charAt(mySymbolIndex);
@@ -120,14 +121,21 @@ class ShredManager {
return new ShredInfo(shredIndex, shredSymbol, symbolIndex, shred.getHost());
}
private int findFirstNonEmptyShredIndex() {
for (int shredIndex = myShredIndex; shredIndex < myShreds.size(); shredIndex++) {
String shredText = extractShredText(myShreds.get(shredIndex));
if (!StringUtil.isEmpty(shredText)) return shredIndex;
}
return -1;
}
private void updateIndexes() {
if (mySymbolIndex < myShredText.length() - 1) {
mySymbolIndex++;
}
else if (myShredIndex < myShreds.size() - 1) {
mySymbolIndex = 0;
myShredIndex++;
myShredText = extractShredText(myShreds.get(myShredIndex));
myShredText = null;
}
else {
myShredIndex = -1;