Examples with PsiAssignmentExpression com.intellij.psi.PsiAssignmentExpression used on opensource projects

Example 6 with PsiAssignmentExpression

use of com.intellij.psi.PsiAssignmentExpression in project intellij-community by JetBrains.

the class OperatorAssignmentPredicate method satisfiedBy.

public boolean satisfiedBy(PsiElement element) {
    if (!(element instanceof PsiAssignmentExpression)) {
        return false;
    }
    final PsiAssignmentExpression assignmentExpression = (PsiAssignmentExpression) element;
    final IElementType tokenType = assignmentExpression.getOperationTokenType();
    return OPERATOR_ASSIGNMENT_TOKENS.contains(tokenType);
}

Example 7 with PsiAssignmentExpression

use of com.intellij.psi.PsiAssignmentExpression in project intellij-community by JetBrains.

the class ReplaceOperatorAssignmentWithAssignmentIntention method getTextForElement.

@Override
protected String getTextForElement(PsiElement element) {
    final PsiAssignmentExpression assignmentExpression = (PsiAssignmentExpression) element;
    final PsiJavaToken sign = assignmentExpression.getOperationSign();
    final String operator = sign.getText();
    return IntentionPowerPackBundle.message("replace.operator.assignment.with.assignment.intention.name", operator);
}

Example 8 with PsiAssignmentExpression

use of com.intellij.psi.PsiAssignmentExpression in project kotlin by JetBrains.

the class ConstantEvaluator method evaluate.

/**
     * Evaluates the given node and returns the constant value it resolves to, if any
     *
     * @param node the node to compute the constant value for
     * @return the corresponding constant value - a String, an Integer, a Float, and so on
     */
@Nullable
public Object evaluate(@Nullable PsiElement node) {
    if (node == null) {
        return null;
    }
    if (node instanceof PsiLiteral) {
        return ((PsiLiteral) node).getValue();
    } else if (node instanceof PsiPrefixExpression) {
        IElementType operator = ((PsiPrefixExpression) node).getOperationTokenType();
        Object operand = evaluate(((PsiPrefixExpression) node).getOperand());
        if (operand == null) {
            return null;
        }
        if (operator == JavaTokenType.EXCL) {
            if (operand instanceof Boolean) {
                return !(Boolean) operand;
            }
        } else if (operator == JavaTokenType.PLUS) {
            return operand;
        } else if (operator == JavaTokenType.TILDE) {
            if (operand instanceof Integer) {
                return ~(Integer) operand;
            } else if (operand instanceof Long) {
                return ~(Long) operand;
            } else if (operand instanceof Short) {
                return ~(Short) operand;
            } else if (operand instanceof Character) {
                return ~(Character) operand;
            } else if (operand instanceof Byte) {
                return ~(Byte) operand;
            }
        } else if (operator == JavaTokenType.MINUS) {
            if (operand instanceof Integer) {
                return -(Integer) operand;
            } else if (operand instanceof Long) {
                return -(Long) operand;
            } else if (operand instanceof Double) {
                return -(Double) operand;
            } else if (operand instanceof Float) {
                return -(Float) operand;
            } else if (operand instanceof Short) {
                return -(Short) operand;
            } else if (operand instanceof Character) {
                return -(Character) operand;
            } else if (operand instanceof Byte) {
                return -(Byte) operand;
            }
        }
    } else if (node instanceof PsiConditionalExpression) {
        PsiConditionalExpression expression = (PsiConditionalExpression) node;
        Object known = evaluate(expression.getCondition());
        if (known == Boolean.TRUE && expression.getThenExpression() != null) {
            return evaluate(expression.getThenExpression());
        } else if (known == Boolean.FALSE && expression.getElseExpression() != null) {
            return evaluate(expression.getElseExpression());
        }
    } else if (node instanceof PsiParenthesizedExpression) {
        PsiParenthesizedExpression parenthesizedExpression = (PsiParenthesizedExpression) node;
        PsiExpression expression = parenthesizedExpression.getExpression();
        if (expression != null) {
            return evaluate(expression);
        }
    } else if (node instanceof PsiBinaryExpression) {
        IElementType operator = ((PsiBinaryExpression) node).getOperationTokenType();
        Object operandLeft = evaluate(((PsiBinaryExpression) node).getLOperand());
        Object operandRight = evaluate(((PsiBinaryExpression) node).getROperand());
        if (operandLeft == null || operandRight == null) {
            if (mAllowUnknown) {
                if (operandLeft == null) {
                    return operandRight;
                } else {
                    return operandLeft;
                }
            }
            return null;
        }
        if (operandLeft instanceof String && operandRight instanceof String) {
            if (operator == JavaTokenType.PLUS) {
                return operandLeft.toString() + operandRight.toString();
            }
            return null;
        } else if (operandLeft instanceof Boolean && operandRight instanceof Boolean) {
            boolean left = (Boolean) operandLeft;
            boolean right = (Boolean) operandRight;
            if (operator == JavaTokenType.OROR) {
                return left || right;
            } else if (operator == JavaTokenType.ANDAND) {
                return left && right;
            } else if (operator == JavaTokenType.OR) {
                return left | right;
            } else if (operator == JavaTokenType.XOR) {
                return left ^ right;
            } else if (operator == JavaTokenType.AND) {
                return left & right;
            } else if (operator == JavaTokenType.EQEQ) {
                return left == right;
            } else if (operator == JavaTokenType.NE) {
                return left != right;
            }
        } else if (operandLeft instanceof Number && operandRight instanceof Number) {
            Number left = (Number) operandLeft;
            Number right = (Number) operandRight;
            boolean isInteger = !(left instanceof Float || left instanceof Double || right instanceof Float || right instanceof Double);
            boolean isWide = isInteger ? (left instanceof Long || right instanceof Long) : (left instanceof Double || right instanceof Double);
            if (operator == JavaTokenType.OR) {
                if (isWide) {
                    return left.longValue() | right.longValue();
                } else {
                    return left.intValue() | right.intValue();
                }
            } else if (operator == JavaTokenType.XOR) {
                if (isWide) {
                    return left.longValue() ^ right.longValue();
                } else {
                    return left.intValue() ^ right.intValue();
                }
            } else if (operator == JavaTokenType.AND) {
                if (isWide) {
                    return left.longValue() & right.longValue();
                } else {
                    return left.intValue() & right.intValue();
                }
            } else if (operator == JavaTokenType.EQEQ) {
                if (isInteger) {
                    return left.longValue() == right.longValue();
                } else {
                    return left.doubleValue() == right.doubleValue();
                }
            } else if (operator == JavaTokenType.NE) {
                if (isInteger) {
                    return left.longValue() != right.longValue();
                } else {
                    return left.doubleValue() != right.doubleValue();
                }
            } else if (operator == JavaTokenType.GT) {
                if (isInteger) {
                    return left.longValue() > right.longValue();
                } else {
                    return left.doubleValue() > right.doubleValue();
                }
            } else if (operator == JavaTokenType.GE) {
                if (isInteger) {
                    return left.longValue() >= right.longValue();
                } else {
                    return left.doubleValue() >= right.doubleValue();
                }
            } else if (operator == JavaTokenType.LT) {
                if (isInteger) {
                    return left.longValue() < right.longValue();
                } else {
                    return left.doubleValue() < right.doubleValue();
                }
            } else if (operator == JavaTokenType.LE) {
                if (isInteger) {
                    return left.longValue() <= right.longValue();
                } else {
                    return left.doubleValue() <= right.doubleValue();
                }
            } else if (operator == JavaTokenType.LTLT) {
                if (isWide) {
                    return left.longValue() << right.intValue();
                } else {
                    return left.intValue() << right.intValue();
                }
            } else if (operator == JavaTokenType.GTGT) {
                if (isWide) {
                    return left.longValue() >> right.intValue();
                } else {
                    return left.intValue() >> right.intValue();
                }
            } else if (operator == JavaTokenType.GTGTGT) {
                if (isWide) {
                    return left.longValue() >>> right.intValue();
                } else {
                    return left.intValue() >>> right.intValue();
                }
            } else if (operator == JavaTokenType.PLUS) {
                if (isInteger) {
                    if (isWide) {
                        return left.longValue() + right.longValue();
                    } else {
                        return left.intValue() + right.intValue();
                    }
                } else {
                    if (isWide) {
                        return left.doubleValue() + right.doubleValue();
                    } else {
                        return left.floatValue() + right.floatValue();
                    }
                }
            } else if (operator == JavaTokenType.MINUS) {
                if (isInteger) {
                    if (isWide) {
                        return left.longValue() - right.longValue();
                    } else {
                        return left.intValue() - right.intValue();
                    }
                } else {
                    if (isWide) {
                        return left.doubleValue() - right.doubleValue();
                    } else {
                        return left.floatValue() - right.floatValue();
                    }
                }
            } else if (operator == JavaTokenType.ASTERISK) {
                if (isInteger) {
                    if (isWide) {
                        return left.longValue() * right.longValue();
                    } else {
                        return left.intValue() * right.intValue();
                    }
                } else {
                    if (isWide) {
                        return left.doubleValue() * right.doubleValue();
                    } else {
                        return left.floatValue() * right.floatValue();
                    }
                }
            } else if (operator == JavaTokenType.DIV) {
                if (isInteger) {
                    if (isWide) {
                        return left.longValue() / right.longValue();
                    } else {
                        return left.intValue() / right.intValue();
                    }
                } else {
                    if (isWide) {
                        return left.doubleValue() / right.doubleValue();
                    } else {
                        return left.floatValue() / right.floatValue();
                    }
                }
            } else if (operator == JavaTokenType.PERC) {
                if (isInteger) {
                    if (isWide) {
                        return left.longValue() % right.longValue();
                    } else {
                        return left.intValue() % right.intValue();
                    }
                } else {
                    if (isWide) {
                        return left.doubleValue() % right.doubleValue();
                    } else {
                        return left.floatValue() % right.floatValue();
                    }
                }
            } else {
                return null;
            }
        }
    } else if (node instanceof PsiTypeCastExpression) {
        PsiTypeCastExpression cast = (PsiTypeCastExpression) node;
        Object operandValue = evaluate(cast.getOperand());
        if (operandValue instanceof Number) {
            Number number = (Number) operandValue;
            PsiTypeElement typeElement = cast.getCastType();
            if (typeElement != null) {
                PsiType type = typeElement.getType();
                if (PsiType.FLOAT.equals(type)) {
                    return number.floatValue();
                } else if (PsiType.DOUBLE.equals(type)) {
                    return number.doubleValue();
                } else if (PsiType.INT.equals(type)) {
                    return number.intValue();
                } else if (PsiType.LONG.equals(type)) {
                    return number.longValue();
                } else if (PsiType.SHORT.equals(type)) {
                    return number.shortValue();
                } else if (PsiType.BYTE.equals(type)) {
                    return number.byteValue();
                }
            }
        }
        return operandValue;
    } else if (node instanceof PsiReference) {
        PsiElement resolved = ((PsiReference) node).resolve();
        if (resolved instanceof PsiField) {
            PsiField field = (PsiField) resolved;
            Object value = field.computeConstantValue();
            if (value != null) {
                return value;
            }
            if (field.getInitializer() != null) {
                return evaluate(field.getInitializer());
            }
            return null;
        } else if (resolved instanceof PsiLocalVariable) {
            PsiLocalVariable variable = (PsiLocalVariable) resolved;
            PsiStatement statement = PsiTreeUtil.getParentOfType(node, PsiStatement.class, false);
            if (statement != null) {
                PsiStatement prev = PsiTreeUtil.getPrevSiblingOfType(statement, PsiStatement.class);
                String targetName = variable.getName();
                if (targetName == null) {
                    return null;
                }
                while (prev != null) {
                    if (prev instanceof PsiDeclarationStatement) {
                        for (PsiElement element : ((PsiDeclarationStatement) prev).getDeclaredElements()) {
                            if (variable.equals(element)) {
                                return evaluate(variable.getInitializer());
                            }
                        }
                    } else if (prev instanceof PsiExpressionStatement) {
                        PsiExpression expression = ((PsiExpressionStatement) prev).getExpression();
                        if (expression instanceof PsiAssignmentExpression) {
                            PsiAssignmentExpression assign = (PsiAssignmentExpression) expression;
                            PsiExpression lhs = assign.getLExpression();
                            if (lhs instanceof PsiReferenceExpression) {
                                PsiReferenceExpression reference = (PsiReferenceExpression) lhs;
                                if (targetName.equals(reference.getReferenceName()) && reference.getQualifier() == null) {
                                    return evaluate(assign.getRExpression());
                                }
                            }
                        }
                    }
                    prev = PsiTreeUtil.getPrevSiblingOfType(prev, PsiStatement.class);
                }
            }
        }
    } else if (node instanceof PsiNewExpression) {
        PsiNewExpression creation = (PsiNewExpression) node;
        PsiArrayInitializerExpression initializer = creation.getArrayInitializer();
        PsiType type = creation.getType();
        if (type instanceof PsiArrayType) {
            if (initializer != null) {
                PsiExpression[] initializers = initializer.getInitializers();
                Class<?> commonType = null;
                List<Object> values = Lists.newArrayListWithExpectedSize(initializers.length);
                int count = 0;
                for (PsiExpression expression : initializers) {
                    Object value = evaluate(expression);
                    if (value != null) {
                        values.add(value);
                        if (commonType == null) {
                            commonType = value.getClass();
                        } else {
                            while (!commonType.isAssignableFrom(value.getClass())) {
                                commonType = commonType.getSuperclass();
                            }
                        }
                    } else if (!mAllowUnknown) {
                        // Inconclusive
                        return null;
                    }
                    count++;
                    if (count == 20) {
                        // avoid large initializers
                        break;
                    }
                }
                type = type.getDeepComponentType();
                if (type == PsiType.INT) {
                    if (!values.isEmpty()) {
                        int[] array = new int[values.size()];
                        for (int i = 0; i < values.size(); i++) {
                            Object o = values.get(i);
                            if (o instanceof Integer) {
                                array[i] = (Integer) o;
                            }
                        }
                        return array;
                    }
                    return new int[0];
                } else if (type == PsiType.BOOLEAN) {
                    if (!values.isEmpty()) {
                        boolean[] array = new boolean[values.size()];
                        for (int i = 0; i < values.size(); i++) {
                            Object o = values.get(i);
                            if (o instanceof Boolean) {
                                array[i] = (Boolean) o;
                            }
                        }
                        return array;
                    }
                    return new boolean[0];
                } else if (type == PsiType.DOUBLE) {
                    if (!values.isEmpty()) {
                        double[] array = new double[values.size()];
                        for (int i = 0; i < values.size(); i++) {
                            Object o = values.get(i);
                            if (o instanceof Double) {
                                array[i] = (Double) o;
                            }
                        }
                        return array;
                    }
                    return new double[0];
                } else if (type == PsiType.LONG) {
                    if (!values.isEmpty()) {
                        long[] array = new long[values.size()];
                        for (int i = 0; i < values.size(); i++) {
                            Object o = values.get(i);
                            if (o instanceof Long) {
                                array[i] = (Long) o;
                            }
                        }
                        return array;
                    }
                    return new long[0];
                } else if (type == PsiType.FLOAT) {
                    if (!values.isEmpty()) {
                        float[] array = new float[values.size()];
                        for (int i = 0; i < values.size(); i++) {
                            Object o = values.get(i);
                            if (o instanceof Float) {
                                array[i] = (Float) o;
                            }
                        }
                        return array;
                    }
                    return new float[0];
                } else if (type == PsiType.CHAR) {
                    if (!values.isEmpty()) {
                        char[] array = new char[values.size()];
                        for (int i = 0; i < values.size(); i++) {
                            Object o = values.get(i);
                            if (o instanceof Character) {
                                array[i] = (Character) o;
                            }
                        }
                        return array;
                    }
                    return new char[0];
                } else if (type == PsiType.BYTE) {
                    if (!values.isEmpty()) {
                        byte[] array = new byte[values.size()];
                        for (int i = 0; i < values.size(); i++) {
                            Object o = values.get(i);
                            if (o instanceof Byte) {
                                array[i] = (Byte) o;
                            }
                        }
                        return array;
                    }
                    return new byte[0];
                } else if (type == PsiType.SHORT) {
                    if (!values.isEmpty()) {
                        short[] array = new short[values.size()];
                        for (int i = 0; i < values.size(); i++) {
                            Object o = values.get(i);
                            if (o instanceof Short) {
                                array[i] = (Short) o;
                            }
                        }
                        return array;
                    }
                    return new short[0];
                } else {
                    if (!values.isEmpty()) {
                        Object o = Array.newInstance(commonType, values.size());
                        return values.toArray((Object[]) o);
                    }
                    return null;
                }
            } else {
                // something like "new byte[3]" but with no initializer.
                // Look up the size and only if small, use it. E.g. if it was byte[3]
                // we return a byte[3] array, but if it's say byte[1024*1024] we don't
                // want to do that.
                PsiExpression[] arrayDimensions = creation.getArrayDimensions();
                int size = 0;
                if (arrayDimensions.length == 1) {
                    Object fixedSize = evaluate(arrayDimensions[0]);
                    if (fixedSize instanceof Number) {
                        size = ((Number) fixedSize).intValue();
                        if (size > 30) {
                            size = 30;
                        }
                    }
                }
                type = type.getDeepComponentType();
                if (type instanceof PsiPrimitiveType) {
                    if (PsiType.BYTE.equals(type)) {
                        return new byte[size];
                    }
                    if (PsiType.BOOLEAN.equals(type)) {
                        return new boolean[size];
                    }
                    if (PsiType.INT.equals(type)) {
                        return new int[size];
                    }
                    if (PsiType.LONG.equals(type)) {
                        return new long[size];
                    }
                    if (PsiType.CHAR.equals(type)) {
                        return new char[size];
                    }
                    if (PsiType.FLOAT.equals(type)) {
                        return new float[size];
                    }
                    if (PsiType.DOUBLE.equals(type)) {
                        return new double[size];
                    }
                    if (PsiType.SHORT.equals(type)) {
                        return new short[size];
                    }
                } else if (type instanceof PsiClassType) {
                    String className = type.getCanonicalText();
                    if (TYPE_STRING.equals(className)) {
                        //noinspection SSBasedInspection
                        return new String[size];
                    }
                    if (TYPE_OBJECT.equals(className)) {
                        //noinspection SSBasedInspection
                        return new Object[size];
                    }
                }
            }
        }
    }
    return null;
}