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Example 1 with PsiReferenceExpression

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

the class ConstantEvaluator method isArrayLiteral.

/**
     * Returns true if the node is pointing to a an array literal
     */
public static boolean isArrayLiteral(@Nullable PsiElement node) {
    if (node instanceof PsiReference) {
        PsiElement resolved = ((PsiReference) node).resolve();
        if (resolved instanceof PsiField) {
            PsiField field = (PsiField) resolved;
            if (field.getInitializer() != null) {
                return isArrayLiteral(field.getInitializer());
            }
        } 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 false;
                }
                while (prev != null) {
                    if (prev instanceof PsiDeclarationStatement) {
                        for (PsiElement element : ((PsiDeclarationStatement) prev).getDeclaredElements()) {
                            if (variable.equals(element)) {
                                return isArrayLiteral(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 isArrayLiteral(assign.getRExpression());
                                }
                            }
                        }
                    }
                    prev = PsiTreeUtil.getPrevSiblingOfType(prev, PsiStatement.class);
                }
            }
        }
    } else if (node instanceof PsiNewExpression) {
        PsiNewExpression creation = (PsiNewExpression) node;
        if (creation.getArrayInitializer() != null) {
            return true;
        }
        PsiType type = creation.getType();
        if (type instanceof PsiArrayType) {
            return true;
        }
    } else if (node instanceof PsiParenthesizedExpression) {
        PsiParenthesizedExpression parenthesizedExpression = (PsiParenthesizedExpression) node;
        PsiExpression expression = parenthesizedExpression.getExpression();
        if (expression != null) {
            return isArrayLiteral(expression);
        }
    } else if (node instanceof PsiTypeCastExpression) {
        PsiTypeCastExpression castExpression = (PsiTypeCastExpression) node;
        PsiExpression operand = castExpression.getOperand();
        if (operand != null) {
            return isArrayLiteral(operand);
        }
    }
    return false;
}
Also used : PsiStatement(com.intellij.psi.PsiStatement) PsiDeclarationStatement(com.intellij.psi.PsiDeclarationStatement) PsiExpression(com.intellij.psi.PsiExpression) PsiReferenceExpression(com.intellij.psi.PsiReferenceExpression) PsiReference(com.intellij.psi.PsiReference) PsiAssignmentExpression(com.intellij.psi.PsiAssignmentExpression) PsiLocalVariable(com.intellij.psi.PsiLocalVariable) PsiNewExpression(com.intellij.psi.PsiNewExpression) PsiArrayType(com.intellij.psi.PsiArrayType) PsiTypeCastExpression(com.intellij.psi.PsiTypeCastExpression) PsiExpressionStatement(com.intellij.psi.PsiExpressionStatement) PsiField(com.intellij.psi.PsiField) PsiParenthesizedExpression(com.intellij.psi.PsiParenthesizedExpression) PsiElement(com.intellij.psi.PsiElement) PsiType(com.intellij.psi.PsiType)

Example 2 with PsiReferenceExpression

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

the class ResourceEvaluator method getResource.

/**
     * Evaluates the given node and returns the resource reference (type and name) it
     * points to, if any
     *
     * @param element the node to compute the constant value for
     * @return the corresponding constant value - a String, an Integer, a Float, and so on
     */
@Nullable
public ResourceUrl getResource(@Nullable PsiElement element) {
    if (element == null) {
        return null;
    }
    if (element instanceof PsiConditionalExpression) {
        PsiConditionalExpression expression = (PsiConditionalExpression) element;
        Object known = ConstantEvaluator.evaluate(null, expression.getCondition());
        if (known == Boolean.TRUE && expression.getThenExpression() != null) {
            return getResource(expression.getThenExpression());
        } else if (known == Boolean.FALSE && expression.getElseExpression() != null) {
            return getResource(expression.getElseExpression());
        }
    } else if (element instanceof PsiParenthesizedExpression) {
        PsiParenthesizedExpression parenthesizedExpression = (PsiParenthesizedExpression) element;
        return getResource(parenthesizedExpression.getExpression());
    } else if (element instanceof PsiMethodCallExpression && mAllowDereference) {
        PsiMethodCallExpression call = (PsiMethodCallExpression) element;
        PsiReferenceExpression expression = call.getMethodExpression();
        PsiMethod method = call.resolveMethod();
        if (method != null && method.getContainingClass() != null) {
            String qualifiedName = method.getContainingClass().getQualifiedName();
            String name = expression.getReferenceName();
            if ((CLASS_RESOURCES.equals(qualifiedName) || CLASS_CONTEXT.equals(qualifiedName) || CLASS_FRAGMENT.equals(qualifiedName) || CLASS_V4_FRAGMENT.equals(qualifiedName) || CLS_TYPED_ARRAY.equals(qualifiedName)) && name != null && name.startsWith("get")) {
                PsiExpression[] args = call.getArgumentList().getExpressions();
                if (args.length > 0) {
                    return getResource(args[0]);
                }
            }
        }
    } else if (element instanceof PsiReference) {
        ResourceUrl url = getResourceConstant(element);
        if (url != null) {
            return url;
        }
        PsiElement resolved = ((PsiReference) element).resolve();
        if (resolved instanceof PsiField) {
            url = getResourceConstant(resolved);
            if (url != null) {
                return url;
            }
            PsiField field = (PsiField) resolved;
            if (field.getInitializer() != null) {
                return getResource(field.getInitializer());
            }
            return null;
        } else if (resolved instanceof PsiLocalVariable) {
            PsiLocalVariable variable = (PsiLocalVariable) resolved;
            PsiStatement statement = PsiTreeUtil.getParentOfType(element, 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) {
                        PsiDeclarationStatement prevStatement = (PsiDeclarationStatement) prev;
                        for (PsiElement e : prevStatement.getDeclaredElements()) {
                            if (variable.equals(e)) {
                                return getResource(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 getResource(assign.getRExpression());
                                }
                            }
                        }
                    }
                    prev = PsiTreeUtil.getPrevSiblingOfType(prev, PsiStatement.class);
                }
            }
        }
    }
    return null;
}
Also used : PsiStatement(com.intellij.psi.PsiStatement) PsiDeclarationStatement(com.intellij.psi.PsiDeclarationStatement) PsiExpression(com.intellij.psi.PsiExpression) PsiMethod(com.intellij.psi.PsiMethod) PsiReferenceExpression(com.intellij.psi.PsiReferenceExpression) PsiReference(com.intellij.psi.PsiReference) PsiAssignmentExpression(com.intellij.psi.PsiAssignmentExpression) PsiLocalVariable(com.intellij.psi.PsiLocalVariable) PsiConditionalExpression(com.intellij.psi.PsiConditionalExpression) PsiMethodCallExpression(com.intellij.psi.PsiMethodCallExpression) PsiExpressionStatement(com.intellij.psi.PsiExpressionStatement) PsiField(com.intellij.psi.PsiField) PsiParenthesizedExpression(com.intellij.psi.PsiParenthesizedExpression) ResourceUrl(com.android.ide.common.resources.ResourceUrl) PsiElement(com.intellij.psi.PsiElement) Nullable(com.android.annotations.Nullable)

Example 3 with PsiReferenceExpression

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

the class ResourceEvaluator method getResourceTypes.

/**
     * Evaluates the given node and returns the resource types applicable to the
     * node, if any.
     *
     * @param element the element to compute the types for
     * @return the corresponding resource types
     */
@Nullable
public EnumSet<ResourceType> getResourceTypes(@Nullable PsiElement element) {
    if (element == null) {
        return null;
    }
    if (element instanceof PsiConditionalExpression) {
        PsiConditionalExpression expression = (PsiConditionalExpression) element;
        Object known = ConstantEvaluator.evaluate(null, expression.getCondition());
        if (known == Boolean.TRUE && expression.getThenExpression() != null) {
            return getResourceTypes(expression.getThenExpression());
        } else if (known == Boolean.FALSE && expression.getElseExpression() != null) {
            return getResourceTypes(expression.getElseExpression());
        } else {
            EnumSet<ResourceType> left = getResourceTypes(expression.getThenExpression());
            EnumSet<ResourceType> right = getResourceTypes(expression.getElseExpression());
            if (left == null) {
                return right;
            } else if (right == null) {
                return left;
            } else {
                EnumSet<ResourceType> copy = EnumSet.copyOf(left);
                copy.addAll(right);
                return copy;
            }
        }
    } else if (element instanceof PsiParenthesizedExpression) {
        PsiParenthesizedExpression parenthesizedExpression = (PsiParenthesizedExpression) element;
        return getResourceTypes(parenthesizedExpression.getExpression());
    } else if (element instanceof PsiMethodCallExpression && mAllowDereference) {
        PsiMethodCallExpression call = (PsiMethodCallExpression) element;
        PsiReferenceExpression expression = call.getMethodExpression();
        PsiMethod method = call.resolveMethod();
        if (method != null && method.getContainingClass() != null) {
            EnumSet<ResourceType> types = getTypesFromAnnotations(method);
            if (types != null) {
                return types;
            }
            String qualifiedName = method.getContainingClass().getQualifiedName();
            String name = expression.getReferenceName();
            if ((CLASS_RESOURCES.equals(qualifiedName) || CLASS_CONTEXT.equals(qualifiedName) || CLASS_FRAGMENT.equals(qualifiedName) || CLASS_V4_FRAGMENT.equals(qualifiedName) || CLS_TYPED_ARRAY.equals(qualifiedName)) && name != null && name.startsWith("get")) {
                PsiExpression[] args = call.getArgumentList().getExpressions();
                if (args.length > 0) {
                    types = getResourceTypes(args[0]);
                    if (types != null) {
                        return types;
                    }
                }
            }
        }
    } else if (element instanceof PsiReference) {
        ResourceUrl url = getResourceConstant(element);
        if (url != null) {
            return EnumSet.of(url.type);
        }
        PsiElement resolved = ((PsiReference) element).resolve();
        if (resolved instanceof PsiField) {
            url = getResourceConstant(resolved);
            if (url != null) {
                return EnumSet.of(url.type);
            }
            PsiField field = (PsiField) resolved;
            if (field.getInitializer() != null) {
                return getResourceTypes(field.getInitializer());
            }
            return null;
        } else if (resolved instanceof PsiParameter) {
            return getTypesFromAnnotations((PsiParameter) resolved);
        } else if (resolved instanceof PsiLocalVariable) {
            PsiLocalVariable variable = (PsiLocalVariable) resolved;
            PsiStatement statement = PsiTreeUtil.getParentOfType(element, 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) {
                        PsiDeclarationStatement prevStatement = (PsiDeclarationStatement) prev;
                        for (PsiElement e : prevStatement.getDeclaredElements()) {
                            if (variable.equals(e)) {
                                return getResourceTypes(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 getResourceTypes(assign.getRExpression());
                                }
                            }
                        }
                    }
                    prev = PsiTreeUtil.getPrevSiblingOfType(prev, PsiStatement.class);
                }
            }
        }
    }
    return null;
}
Also used : PsiStatement(com.intellij.psi.PsiStatement) PsiDeclarationStatement(com.intellij.psi.PsiDeclarationStatement) PsiExpression(com.intellij.psi.PsiExpression) PsiMethod(com.intellij.psi.PsiMethod) PsiReferenceExpression(com.intellij.psi.PsiReferenceExpression) EnumSet(java.util.EnumSet) PsiReference(com.intellij.psi.PsiReference) ResourceType(com.android.resources.ResourceType) PsiAssignmentExpression(com.intellij.psi.PsiAssignmentExpression) PsiLocalVariable(com.intellij.psi.PsiLocalVariable) PsiConditionalExpression(com.intellij.psi.PsiConditionalExpression) PsiMethodCallExpression(com.intellij.psi.PsiMethodCallExpression) PsiParameter(com.intellij.psi.PsiParameter) PsiExpressionStatement(com.intellij.psi.PsiExpressionStatement) PsiField(com.intellij.psi.PsiField) PsiParenthesizedExpression(com.intellij.psi.PsiParenthesizedExpression) ResourceUrl(com.android.ide.common.resources.ResourceUrl) PsiElement(com.intellij.psi.PsiElement) Nullable(com.android.annotations.Nullable)

Example 4 with PsiReferenceExpression

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

the class TypeEvaluator method evaluate.

/**
     * Returns the inferred type of the given node
     */
@Nullable
public PsiType evaluate(@Nullable PsiElement node) {
    if (node == null) {
        return null;
    }
    PsiElement resolved = null;
    if (node instanceof PsiReference) {
        resolved = ((PsiReference) node).resolve();
    }
    if (resolved instanceof PsiMethod) {
        PsiMethod method = (PsiMethod) resolved;
        if (method.isConstructor()) {
            PsiClass containingClass = method.getContainingClass();
            if (containingClass != null && mContext != null) {
                return mContext.getEvaluator().getClassType(containingClass);
            }
        } else {
            return method.getReturnType();
        }
    }
    if (resolved instanceof PsiField) {
        PsiField field = (PsiField) resolved;
        if (field.getInitializer() != null) {
            PsiType type = evaluate(field.getInitializer());
            if (type != null) {
                return type;
            }
        }
        return field.getType();
    } 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);
            }
        }
        return variable.getType();
    } else if (node instanceof PsiExpression) {
        PsiExpression expression = (PsiExpression) node;
        return expression.getType();
    }
    return null;
}
Also used : PsiStatement(com.intellij.psi.PsiStatement) PsiDeclarationStatement(com.intellij.psi.PsiDeclarationStatement) PsiExpression(com.intellij.psi.PsiExpression) PsiMethod(com.intellij.psi.PsiMethod) PsiReferenceExpression(com.intellij.psi.PsiReferenceExpression) PsiClass(com.intellij.psi.PsiClass) PsiReference(com.intellij.psi.PsiReference) PsiAssignmentExpression(com.intellij.psi.PsiAssignmentExpression) PsiLocalVariable(com.intellij.psi.PsiLocalVariable) PsiExpressionStatement(com.intellij.psi.PsiExpressionStatement) PsiField(com.intellij.psi.PsiField) PsiElement(com.intellij.psi.PsiElement) PsiType(com.intellij.psi.PsiType) Nullable(com.android.annotations.Nullable)

Example 5 with PsiReferenceExpression

use of com.intellij.psi.PsiReferenceExpression in project timber by JakeWharton.

the class WrongTimberUsageDetector method findLiteralValue.

private static String findLiteralValue(PsiExpression argument) {
    if (argument instanceof PsiLiteralExpression) {
        PsiLiteralExpression literalExpression = (PsiLiteralExpression) argument;
        Object value = literalExpression.getValue();
        if (value instanceof String) {
            return (String) value;
        }
    } else if (argument instanceof PsiBinaryExpression) {
        PsiBinaryExpression binaryExpression = (PsiBinaryExpression) argument;
        if (binaryExpression.getOperationTokenType() == JavaTokenType.PLUS) {
            String left = findLiteralValue(binaryExpression.getLOperand());
            String right = findLiteralValue(binaryExpression.getROperand());
            if (left != null && right != null) {
                return left + right;
            }
        }
    } else if (argument instanceof PsiReferenceExpression) {
        PsiReferenceExpression referenceExpression = (PsiReferenceExpression) argument;
        PsiElement resolved = referenceExpression.resolve();
        if (resolved instanceof PsiField) {
            PsiField field = (PsiField) resolved;
            Object value = field.computeConstantValue();
            if (value instanceof String) {
                return (String) value;
            }
        }
    }
    return null;
}
Also used : PsiLiteralExpression(com.intellij.psi.PsiLiteralExpression) PsiReferenceExpression(com.intellij.psi.PsiReferenceExpression) PsiField(com.intellij.psi.PsiField) PsiElement(com.intellij.psi.PsiElement) PsiBinaryExpression(com.intellij.psi.PsiBinaryExpression)

Aggregations

PsiReferenceExpression (com.intellij.psi.PsiReferenceExpression)25 PsiElement (com.intellij.psi.PsiElement)15 PsiExpression (com.intellij.psi.PsiExpression)13 PsiField (com.intellij.psi.PsiField)9 PsiMethodCallExpression (com.intellij.psi.PsiMethodCallExpression)9 PsiReference (com.intellij.psi.PsiReference)7 PsiLocalVariable (com.intellij.psi.PsiLocalVariable)6 PsiNewExpression (com.intellij.psi.PsiNewExpression)6 Nullable (com.android.annotations.Nullable)5 PsiAssignmentExpression (com.intellij.psi.PsiAssignmentExpression)5 PsiClass (com.intellij.psi.PsiClass)5 PsiDeclarationStatement (com.intellij.psi.PsiDeclarationStatement)5 PsiExpressionStatement (com.intellij.psi.PsiExpressionStatement)5 PsiMethod (com.intellij.psi.PsiMethod)5 ResourceType (com.android.resources.ResourceType)4 PsiStatement (com.intellij.psi.PsiStatement)4 PsiConditionalExpression (com.intellij.psi.PsiConditionalExpression)3 PsiLiteralExpression (com.intellij.psi.PsiLiteralExpression)3 PsiParenthesizedExpression (com.intellij.psi.PsiParenthesizedExpression)3 NonNls (org.jetbrains.annotations.NonNls)3