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Add utility function for getting text with context

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This commit is contained in:
Nikolay Krasko
2014-12-19 16:42:48 +03:00
parent 98fde07c9e
commit db488ad295
2 changed files with 51 additions and 17 deletions
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compiler/frontend/src/org/jetbrains/jet/lang/parsing/AbstractJetParsing.java
+4 -17
View File
@@ -27,6 +27,7 @@ import org.jetbrains.annotations.TestOnly;
import org.jetbrains.jet.lexer.JetKeywordToken;
import org.jetbrains.jet.lexer.JetToken;
import org.jetbrains.jet.lexer.JetTokens;
import org.jetbrains.jet.utils.strings.StringsPackage;
import java.util.HashMap;
import java.util.Map;
@@ -368,12 +369,8 @@ import static org.jetbrains.jet.lexer.JetTokens.*;
currentPosition.rollbackTo();
if (endOffset - beginOffset > LOOK_AHEAD_SIZE_WARN && !ApplicationManager.getApplication().isHeadlessEnvironment()) {
String text = new StringBuilder(myBuilder.getOriginalText())
.insert(endOffset, "<~~!END!~~>")
.insert(beginOffset, "<~~!BEGIN!~~>")
.toString();
LOGGER.warn("Suspicious big range: \n" + text);
String rangeWithContext = StringsPackage.substringWithContext(myBuilder.getOriginalText(), beginOffset, endOffset, 100);
LOGGER.warn("Suspicious big range: \n" + rangeWithContext);
}
return pattern.result();
@@ -497,16 +494,6 @@ import static org.jetbrains.jet.lexer.JetTokens.*;
@SuppressWarnings("UnusedDeclaration")
@TestOnly
public String currentContext() {
String marker = "~!!!~";
int range = 50;
CharSequence text = myBuilder.getOriginalText();
int start = Math.max(0, myBuilder.getCurrentOffset() - range);
int end = Math.min(text.length() - 1, myBuilder.getCurrentOffset() + 50 + marker.length());
return new StringBuilder(text)
.insert(myBuilder.getCurrentOffset(), marker)
.substring(start, end);
return StringsPackage.substringWithContext(myBuilder.getOriginalText(), myBuilder.getCurrentOffset(), myBuilder.getCurrentOffset(), 20);
}
}
compiler/util/src/org/jetbrains/jet/utils/strings.kt
+47
View File
@@ -0,0 +1,47 @@
/*
* Copyright 2010-2014 JetBrains s.r.o.
*
* 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 org.jetbrains.jet.utils.strings
import com.intellij.openapi.util.text.StringUtil
private val CARET_MARKER = "<~!!~>"
private val BEGIN_MARKER = "<~BEGIN~>"
private val END_MARKER = "<~END~>"
public fun CharSequence.substringWithContext(beginIndex: Int, endIndex: Int, range: Int): String {
val start = Math.max(0, beginIndex - range)
val end = Math.min(this.length(), endIndex + range)
val notFromBegin = start != 0
val notToEnd = end != this.length()
val updatedStart = beginIndex - start
val updatedEnd = endIndex - start
return StringBuilder(this.toString().substring(start, end))
.insert(updatedEnd, if (updatedEnd == updatedStart) CARET_MARKER else END_MARKER)
.insert(updatedStart, if (updatedEnd == updatedStart) "" else BEGIN_MARKER)
.insert(0, if (notFromBegin) "<~...${position(this, start)}~>" else "")
.append(if (notToEnd) "<~${position(this, end)}...~>" else "").toString()
}
private fun position(str: CharSequence, offset: Int): String {
val line = StringUtil.offsetToLineNumber(str, offset) + 1
return "(line: $line)"
}