private static String renderParameter( ValueParameterDescriptor descriptor, boolean named, BindingContext bindingContext) { StringBuilder builder = new StringBuilder(); if (named) builder.append("["); if (descriptor.getVarargElementType() != null) { builder.append("vararg "); } builder .append(descriptor.getName()) .append(": ") .append(DescriptorRenderer.TEXT.renderType(getActualParameterType(descriptor))); if (descriptor.hasDefaultValue()) { PsiElement element = BindingContextUtils.descriptorToDeclaration(bindingContext, descriptor); String defaultExpression = "?"; if (element instanceof JetParameter) { JetParameter parameter = (JetParameter) element; JetExpression defaultValue = parameter.getDefaultValue(); if (defaultValue != null) { if (defaultValue instanceof JetConstantExpression) { JetConstantExpression constantExpression = (JetConstantExpression) defaultValue; defaultExpression = constantExpression.getText(); if (defaultExpression.length() > 10) { if (defaultExpression.startsWith("\"")) defaultExpression = "\"...\""; else if (defaultExpression.startsWith("\'")) defaultExpression = "\'...\'"; else defaultExpression = defaultExpression.substring(0, 7) + "..."; } } } } builder.append(" = ").append(defaultExpression); } if (named) builder.append("]"); return builder.toString(); }
private List<ValueParameterDescriptor> createValueParameterDescriptors( ExpressionTypingContext context, JetFunctionLiteral functionLiteral, FunctionDescriptorImpl functionDescriptor, boolean functionTypeExpected) { List<ValueParameterDescriptor> valueParameterDescriptors = Lists.newArrayList(); List<JetParameter> declaredValueParameters = functionLiteral.getValueParameters(); List<ValueParameterDescriptor> expectedValueParameters = (functionTypeExpected) ? JetStandardClasses.getValueParameters(functionDescriptor, context.expectedType) : null; boolean hasDeclaredValueParameters = functionLiteral.getValueParameterList() != null; if (functionTypeExpected && !hasDeclaredValueParameters && expectedValueParameters.size() == 1) { ValueParameterDescriptor valueParameterDescriptor = expectedValueParameters.get(0); ValueParameterDescriptor it = new ValueParameterDescriptorImpl( functionDescriptor, 0, Collections.<AnnotationDescriptor>emptyList(), "it", false, valueParameterDescriptor.getOutType(), valueParameterDescriptor.hasDefaultValue(), valueParameterDescriptor.getVarargElementType()); valueParameterDescriptors.add(it); context.trace.record(AUTO_CREATED_IT, it); } else { for (int i = 0; i < declaredValueParameters.size(); i++) { JetParameter declaredParameter = declaredValueParameters.get(i); JetTypeReference typeReference = declaredParameter.getTypeReference(); JetType type; if (typeReference != null) { type = context.getTypeResolver().resolveType(context.scope, typeReference); } else { if (expectedValueParameters != null && i < expectedValueParameters.size()) { type = expectedValueParameters.get(i).getOutType(); } else { context.trace.report(CANNOT_INFER_PARAMETER_TYPE.on(declaredParameter)); type = ErrorUtils.createErrorType("Cannot be inferred"); } } ValueParameterDescriptor valueParameterDescriptor = context .getDescriptorResolver() .resolveValueParameterDescriptor(functionDescriptor, declaredParameter, i, type); valueParameterDescriptors.add(valueParameterDescriptor); } } return valueParameterDescriptors; }
@NotNull private static List<ValueParameterDescriptor> createValueParameterDescriptors( @NotNull ExpressionTypingContext context, @NotNull JetFunctionLiteral functionLiteral, @NotNull FunctionDescriptorImpl functionDescriptor, boolean functionTypeExpected) { List<ValueParameterDescriptor> valueParameterDescriptors = Lists.newArrayList(); List<JetParameter> declaredValueParameters = functionLiteral.getValueParameters(); List<ValueParameterDescriptor> expectedValueParameters = (functionTypeExpected) ? KotlinBuiltIns.getInstance() .getValueParameters(functionDescriptor, context.expectedType) : null; JetParameterList valueParameterList = functionLiteral.getValueParameterList(); boolean hasDeclaredValueParameters = valueParameterList != null; if (functionTypeExpected && !hasDeclaredValueParameters && expectedValueParameters.size() == 1) { ValueParameterDescriptor valueParameterDescriptor = expectedValueParameters.get(0); ValueParameterDescriptor it = new ValueParameterDescriptorImpl( functionDescriptor, 0, Collections.<AnnotationDescriptor>emptyList(), Name.identifier("it"), valueParameterDescriptor.getType(), valueParameterDescriptor.hasDefaultValue(), valueParameterDescriptor.getVarargElementType()); valueParameterDescriptors.add(it); context.trace.record(AUTO_CREATED_IT, it); } else { if (expectedValueParameters != null && declaredValueParameters.size() != expectedValueParameters.size()) { List<JetType> expectedParameterTypes = DescriptorUtils.getValueParametersTypes(expectedValueParameters); context.trace.report( EXPECTED_PARAMETERS_NUMBER_MISMATCH.on( functionLiteral, expectedParameterTypes.size(), expectedParameterTypes)); } for (int i = 0; i < declaredValueParameters.size(); i++) { ValueParameterDescriptor valueParameterDescriptor = createValueParameterDescriptor( context, functionDescriptor, declaredValueParameters, expectedValueParameters, i); valueParameterDescriptors.add(valueParameterDescriptor); } } return valueParameterDescriptors; }
private static String renderParameter( ValueParameterDescriptor parameter, boolean named, BindingContext bindingContext) { StringBuilder builder = new StringBuilder(); if (named) builder.append("["); if (parameter.getVarargElementType() != null) { builder.append("vararg "); } builder .append(parameter.getName()) .append(": ") .append( DescriptorRenderer.SHORT_NAMES_IN_TYPES.renderType(getActualParameterType(parameter))); if (parameter.hasDefaultValue()) { PsiElement parameterDeclaration = BindingContextUtils.descriptorToDeclaration(bindingContext, parameter); builder.append(" = ").append(getDefaultExpressionString(parameterDeclaration)); } if (named) builder.append("]"); return builder.toString(); }
private static JetType getActualParameterType(ValueParameterDescriptor descriptor) { JetType paramType = descriptor.getType(); if (descriptor.getVarargElementType() != null) paramType = descriptor.getVarargElementType(); return paramType; }