CheckUtils { public static boolean isTrueValue(ExpressionTree tree) { return tree.is(Kind.BOOLEAN_LITERAL, Kind.NUMERIC_LITERAL, Kind.REGULAR_STRING_LITERAL, Kind.NULL_LITERAL) && !isFalseValue(tree); } private  CheckUtils(); static boolean isFunction(Tree tree); static String getFunctionName(FunctionTree functionDec); @Nullable static String getFunctionName(FunctionCallTree functionCall); @Nullable static String getLowerCaseFunctionName(FunctionCallTree functionCall); @Nullable static String functionName(FunctionCallTree functionCall); @Nullable static String lowerCaseFunctionName(FunctionCallTree functionCall); static Set<String> lowerCaseSet(String... names); static String getClassName(ClassDeclarationTree classDeclaration); static String getLowerCaseClassName(ClassDeclarationTree classDeclarationTree); @Nullable static String nameOf(Tree tree); static boolean isOverriding(MethodDeclarationTree declaration); static boolean isExitExpression(FunctionCallTree functionCallTree); static boolean hasModifier(ClassMemberTree tree, String toFind); static boolean hasModifier(List<SyntaxToken> modifiers, String toFind); static boolean isClosingTag(SyntaxToken token); static boolean isClosingTag(Tree tree); static Stream<String> lines(PhpFile file); static ExpressionTree skipParenthesis(ExpressionTree expr); @Nullable static ExpressionTree getForCondition(ForStatementTree tree); static String trimQuotes(String value); static String trimQuotes(LiteralTree literalTree); static boolean isFalseValue(ExpressionTree tree); static boolean isTrueValue(ExpressionTree tree); static boolean isStringLiteralWithValue(@Nullable Tree tree, String s); static boolean isNullOrEmptyString(ExpressionTree tree); static boolean hasAnnotation(Tree declaration, String annotation); static boolean isPublic(ClassMemberTree tree); static boolean isAbstract(ClassDeclarationTree tree); static final ImmutableList<Kind> FUNCTION_KINDS; static final ImmutableMap<String, String> SUPERGLOBALS_BY_OLD_NAME; static final ImmutableSet<String> SUPERGLOBALS; }
@Test public void is_true_value() throws Exception { assertThat(createLiterals(Tree.Kind.BOOLEAN_LITERAL, "true", "True", "TRUE") .allMatch(CheckUtils::isTrueValue)).isTrue(); assertThat(createLiterals(Tree.Kind.NUMERIC_LITERAL, "1", "-1", "3.14") .allMatch(CheckUtils::isTrueValue)).isTrue(); assertThat(createLiterals(Tree.Kind.REGULAR_STRING_LITERAL, "\"abc\"", "'1'", "'false'", "'0.0'") .allMatch(CheckUtils::isTrueValue)).isTrue(); assertThat((createLiterals(Tree.Kind.NULL_LITERAL, "NULL")) .allMatch(CheckUtils::isTrueValue)).isFalse(); VariableIdentifierTreeImpl variableIdentifierTree = new VariableIdentifierTreeImpl( new InternalSyntaxToken(1, 1, "var", Collections.emptyList(), 1, false)); assertThat(CheckUtils.isTrueValue(variableIdentifierTree)).isFalse(); }