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Java ExpressionUtils.isEmptyStringLiteral方法代码示例

本文整理汇总了Java中com.siyeh.ig.psiutils.ExpressionUtils.isEmptyStringLiteral方法的典型用法代码示例。如果您正苦于以下问题：Java ExpressionUtils.isEmptyStringLiteral方法的具体用法？Java ExpressionUtils.isEmptyStringLiteral怎么用？Java ExpressionUtils.isEmptyStringLiteral使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类com.siyeh.ig.psiutils.ExpressionUtils的用法示例。


在下文中一共展示了ExpressionUtils.isEmptyStringLiteral方法的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。

示例1: visitPolyadicExpression

import com.siyeh.ig.psiutils.ExpressionUtils; //导入方法依赖的package包/类
@Override
public void visitPolyadicExpression(PsiPolyadicExpression expression) {
  super.visitPolyadicExpression(expression);
  if (!ExpressionUtils.hasStringType(expression)) {
    return;
  }
  final PsiExpression[] operands = expression.getOperands();
  for (PsiExpression operand : operands) {
    operand = ParenthesesUtils.stripParentheses(operand);
    if (operand == null) {
      return;
    }
    if (!ExpressionUtils.isEmptyStringLiteral(operand)) {
      continue;
    }
    if (PsiUtil.isConstantExpression(expression)) {
      return;
    }
    registerError(operand, operand);
  }
}
开发者ID:jskierbi，项目名称:intellij-ce-playground，代码行数:22，代码来源:TrivialStringConcatenationInspection.java

示例2: doFix

import com.siyeh.ig.psiutils.ExpressionUtils; //导入方法依赖的package包/类
@Override
public void doFix(Project project, ProblemDescriptor descriptor) throws IncorrectOperationException {
  final PsiIdentifier name = (PsiIdentifier)descriptor.getPsiElement();
  final PsiReferenceExpression expression = (PsiReferenceExpression)name.getParent();
  if (expression == null) {
    return;
  }
  final PsiMethodCallExpression call = (PsiMethodCallExpression)expression.getParent();
  final PsiExpressionList argumentList = call.getArgumentList();
  final PsiExpression[] arguments = argumentList.getExpressions();
  if (arguments.length == 0) {
    return;
  }
  final PsiExpression qualifier = expression.getQualifierExpression();
  final PsiExpression argument = arguments[0];
  final PsiExpression checkedExpression;
  final boolean addNullCheck;
  if (ExpressionUtils.isEmptyStringLiteral(argument)) {
    checkedExpression = getCheckedExpression(qualifier);
    addNullCheck = false;
  }
  else {
    checkedExpression = getCheckedExpression(argument);
    addNullCheck = !isCheckedForNull(checkedExpression);
  }
  final StringBuilder newExpression;
  if (addNullCheck) {
    newExpression = new StringBuilder(checkedExpression.getText());
    newExpression.append("!=null&&");
  } else {
    newExpression = new StringBuilder("");
  }
  final PsiElement parent = call.getParent();
  final PsiExpression expressionToReplace;
  if (parent instanceof PsiExpression) {
    final PsiExpression parentExpression = (PsiExpression)parent;
    if (BoolUtils.isNegation(parentExpression)) {
      expressionToReplace = parentExpression;
      if (useIsEmpty) {
        newExpression.append('!').append(checkedExpression.getText()).append(".isEmpty()");
      }
      else {
        newExpression.append(checkedExpression.getText()).append(".length()!=0");
      }
    }
    else {
      expressionToReplace = call;
      if (useIsEmpty) {
        newExpression.append(checkedExpression.getText()).append(".isEmpty()");
      }
      else {
        newExpression.append(checkedExpression.getText()).append(".length()==0");
      }
    }
  }
  else {
    expressionToReplace = call;
    if (useIsEmpty) {
      newExpression.append(checkedExpression.getText()).append(".isEmpty()");
    }
    else {
      newExpression.append(checkedExpression.getText()).append(".length()==0");
    }
  }
  PsiReplacementUtil.replaceExpression(expressionToReplace, newExpression.toString());
}
开发者ID:jskierbi，项目名称:intellij-ce-playground，代码行数:67，代码来源:StringEqualsEmptyStringInspection.java

示例3: calculateReplacementExpression

import com.siyeh.ig.psiutils.ExpressionUtils; //导入方法依赖的package包/类
@NonNls
static String calculateReplacementExpression(PsiLiteralExpression expression) {
  final PsiElement parent = ParenthesesUtils.getParentSkipParentheses(expression);
  if (!(parent instanceof PsiPolyadicExpression)) {
    return null;
  }
  if (parent instanceof PsiBinaryExpression) {
    final PsiBinaryExpression binaryExpression = (PsiBinaryExpression)parent;
    final PsiExpression lOperand = ParenthesesUtils.stripParentheses(binaryExpression.getLOperand());
    final PsiExpression rOperand = ParenthesesUtils.stripParentheses(binaryExpression.getROperand());
    final PsiExpression replacement;
    if (ExpressionUtils.isEmptyStringLiteral(lOperand)) {
      replacement = rOperand;
    }
    else {
      replacement = lOperand;
    }
    return replacement == null ? "" : buildReplacement(replacement, false);
  }
  final PsiPolyadicExpression polyadicExpression = (PsiPolyadicExpression)parent;
  final PsiExpression[] operands = polyadicExpression.getOperands();
  final PsiClassType stringType = TypeUtils.getStringType(expression);
  boolean seenString = false;
  boolean seenEmpty = false;
  boolean replaced = false;
  PsiExpression operandToReplace = null;
  final StringBuilder text = new StringBuilder();
  for (PsiExpression operand : operands) {
    if (operandToReplace != null && !replaced) {
      if (ExpressionUtils.hasStringType(operand)) {
        seenString = true;
      }
      if (text.length() > 0) {
        text.append(" + ");
      }
      text.append(buildReplacement(operandToReplace, seenString));
      text.append(" + ");
      text.append(operand.getText());
      replaced = true;
      continue;
    }
    if (ParenthesesUtils.stripParentheses(operand) == expression) {
      seenEmpty = true;
      continue;
    }
    if (seenEmpty && !replaced) {
      operandToReplace = operand;
      continue;
    }
    if (stringType.equals(operand.getType())) {
      seenString = true;
    }
    if (text.length() > 0) {
      text.append(" + ");
    }
    text.append(operand.getText());
  }
  if (!replaced && operandToReplace != null) {
    text.append(" + ");
    text.append(buildReplacement(operandToReplace, seenString));
  }
  return text.toString();
}
开发者ID:jskierbi，项目名称:intellij-ce-playground，代码行数:64，代码来源:TrivialStringConcatenationInspection.java

示例4: doFix

import com.siyeh.ig.psiutils.ExpressionUtils; //导入方法依赖的package包/类
@Override
public void doFix(Project project, ProblemDescriptor descriptor) throws IncorrectOperationException {
  final PsiIdentifier name = (PsiIdentifier)descriptor.getPsiElement();
  final PsiReferenceExpression expression = (PsiReferenceExpression)name.getParent();
  if (expression == null) {
    return;
  }
  final PsiMethodCallExpression call = (PsiMethodCallExpression)expression.getParent();
  final PsiExpressionList argumentList = call.getArgumentList();
  final PsiExpression[] arguments = argumentList.getExpressions();
  if (arguments.length == 0) {
    return;
  }
  final PsiExpression qualifier = expression.getQualifierExpression();
  final PsiExpression argument = arguments[0];
  final String variableText;
  final boolean addNullCheck;
  if (ExpressionUtils.isEmptyStringLiteral(argument)) {
    variableText = getRemainingText(qualifier);
    addNullCheck = false;
  }
  else {
    variableText = getRemainingText(argument);
    addNullCheck = true;
  }
  StringBuilder newExpression;
  if (addNullCheck) {
    newExpression = new StringBuilder(variableText);
    newExpression.append("!=null&&");
  } else {
    newExpression = new StringBuilder("");
  }
  final PsiElement parent = call.getParent();
  final PsiExpression expressionToReplace;
  if (parent instanceof PsiExpression) {
    final PsiExpression parentExpression = (PsiExpression)parent;
    if (BoolUtils.isNegation(parentExpression)) {
      expressionToReplace = parentExpression;
      if (useIsEmpty) {
        newExpression.append('!').append(variableText).append(".isEmpty()");
      }
      else {
        newExpression.append(variableText).append(".length()!=0");
      }
    }
    else {
      expressionToReplace = call;
      if (useIsEmpty) {
        newExpression.append(variableText).append(".isEmpty()");
      }
      else {
        newExpression.append(variableText).append(".length()==0");
      }
    }
  }
  else {
    expressionToReplace = call;
    if (useIsEmpty) {
      newExpression.append(variableText).append(".isEmpty()");
    }
    else {
      newExpression.append(variableText).append(".length()==0");
    }
  }
  replaceExpression(expressionToReplace, newExpression.toString());
}
开发者ID:lshain-android-source，项目名称:tools-idea，代码行数:67，代码来源:StringEqualsEmptyStringInspection.java

示例5: calculateReplacementExpression

import com.siyeh.ig.psiutils.ExpressionUtils; //导入方法依赖的package包/类
@NonNls
static String calculateReplacementExpression(PsiLiteralExpression expression) {
  final PsiElement parent = ParenthesesUtils.getParentSkipParentheses(expression);
  if (!(parent instanceof PsiPolyadicExpression)) {
    return null;
  }
  if (parent instanceof PsiBinaryExpression) {
    final PsiBinaryExpression binaryExpression = (PsiBinaryExpression)parent;
    final PsiExpression lOperand = ParenthesesUtils.stripParentheses(binaryExpression.getLOperand());
    final PsiExpression rOperand = ParenthesesUtils.stripParentheses(binaryExpression.getROperand());
    final PsiExpression replacement;
    if (ExpressionUtils.isEmptyStringLiteral(lOperand)) {
      replacement = rOperand;
    }
    else {
      replacement = lOperand;
    }
    return replacement == null ? "" : buildReplacement(replacement, false);
  }
  final PsiPolyadicExpression polyadicExpression = (PsiPolyadicExpression)parent;
  final PsiExpression[] operands = polyadicExpression.getOperands();
  final PsiClassType stringType = TypeUtils.getStringType(expression);
  boolean seenString = false;
  boolean seenEmpty = false;
  boolean replaced = false;
  PsiExpression operandToReplace = null;
  final StringBuilder text = new StringBuilder();
  for (PsiExpression operand : operands) {
    if (operandToReplace != null && !replaced) {
      if (ExpressionUtils.hasStringType(operand)) {
        seenString = true;
      }
      if (text.length() > 0) {
        text.append(" + ");
      }
      text.append(buildReplacement(operandToReplace, seenString));
      text.append(" + ");
      text.append(operand.getText());
      replaced = true;
      continue;
    }
    if (operand == expression) {
      seenEmpty = true;
      continue;
    }
    if (seenEmpty && !replaced) {
      operandToReplace = operand;
      continue;
    }
    if (stringType.equals(operand.getType())) {
      seenString = true;
    }
    if (text.length() > 0) {
      text.append(" + ");
    }
    text.append(operand.getText());
  }
  if (!replaced && operandToReplace != null) {
    text.append(" + ");
    text.append(buildReplacement(operandToReplace, seenString));
  }
  return text.toString();
}
开发者ID:lshain-android-source，项目名称:tools-idea，代码行数:64，代码来源:TrivialStringConcatenationInspection.java


注：本文中的com.siyeh.ig.psiutils.ExpressionUtils.isEmptyStringLiteral方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。