class ara::core::BasicString

The assignment operator operator+= of class ara::core::BasicString ([SWS_CORE_03072] from #include "ara/core/string.h") synchronously appends the content of a passed BasicString instance to the current object. The functional semantics follow the corresponding usage in [basic.string] ([SWS_CORE_03072]). The call returns a reference to the modified instance (*this), enabling assignment chaining.

Regarding error handling, the operation is explicitly declared as "not exception safe" in the specification ([SWS_CORE_03072]). Specific error codes or notification mechanisms via DET or DEM are not defined for this element. Should an internal memory allocation fail, the method therefore provides no exception safety guarantee.

Regarding concurrency and constraints, it should be noted that the call modifies the state of the instance directly. Since the payload does not mention any synchronization mechanisms, concurrent read or write access to the same object across multiple threads is likely not thread-safe without external synchronization. Question Q-352f9d72ad3dfdbd (open)

Together with further overloads of operator+=, the operator forms the interface for string appending, for instance for single characters ([SWS_CORE_03074]), raw character pointers ([SWS_CORE_03073]), initializer lists ([SWS_CORE_03075]), and StringView ([SWS_CORE_03307]). All of these modifying operators share the "not exception safe" property and complement the basic constructors of ara::core::BasicString ([SWS_CORE_03024], [SWS_CORE_03025]).

use

Assignment operator operator+= of class ara::core::BasicString synchronously appends a pointer-based string to the existing string and returns a reference to the modified object [SWS_CORE_03073]. The function is included via header file #include "ara/core/string.h" and accepts a pointer s of type const value_type * as parameter [SWS_CORE_03073]. The functional semantics follow the standardized definition from [basic.string], with the standard character type charT being replaced by value_type as the essential deviation [SWS_CORE_03073].

Error Handling and Restrictions

Regarding exception safety, the member function is explicitly declared as not exception safe ("not exception safe") [SWS_CORE_03073]. Specific error codes, return values for error indication, or error reports to DET or DEM are not specified for this operator. Interpretation: If necessary internal memory allocations fail during the expansion of the string, a consistent object state is consequently unlikely to be guaranteed, and no separate error channel exists in the AUTOSAR Adaptive environment. Question Q-a1498ddbc09bcfa9 (open)

Interaction

The method complements the other assignment operators within ara::core::BasicString that implement the appending of full string instances [SWS_CORE_03072], single characters [SWS_CORE_03074], initializer lists [SWS_CORE_03075], or StringView objects [SWS_CORE_03307]. As with the constructors for raw character pointers [SWS_CORE_03028] [SWS_CORE_03029], all of these variants are specified as not exception safe.

Member function operator+= of class ara::core::BasicString enables synchronous appending of a single character c of type value_type to the calling string object [SWS_CORE_03074]. The declaration is contained in header ara/core/string.h [SWS_CORE_03074]. The behavior corresponds to the specification in [basic.string], with parameter type charT deviatingly replaced by value_type [SWS_CORE_03074]. A reference to the modified object (BasicString &) is provided as return value, which supports chained calls.

Regarding robustness and error handling, the operation is classified as not exception safe [SWS_CORE_03074]. Specific error codes and reports to DET or DEM are not defined for this function. Interpretation: The classification as not exception safe is likely based on the fact that if the current buffer capacity is exceeded, a dynamic allocation via the underlying allocator must be triggered, which may fail in case of insufficient memory. Question Q-d74ec80829327ce0 (open)

Regarding concurrency and constraints, the function modifies the instance directly; concurrent read or write accesses without external synchronization are therefore not safe. In interplay with other interfaces, the operator complements instantiation via constructors such as [SWS_CORE_03024] or [SWS_CORE_03025] as well as alternative compound assignments for entire strings [SWS_CORE_03072], string pointers [SWS_CORE_03073], initializer lists [SWS_CORE_03075], and string views [SWS_CORE_03307].

Member function operator+= of ara::core::BasicString ([SWS_CORE_03075]) appends the characters of an std::initializer_list<value_type> synchronously to the existing string object. As return value, the method returns a reference to the modified string (*this). The behavior follows the C++ standard for [basic.string], with charT replaced by value_type ([SWS_CORE_03075]). To use it, header ara/core/string.h must be included ([SWS_CORE_03075]).

Regarding error handling and robustness, the function is classified as not exception safe ([SWS_CORE_03075]). Interpretation: It is to be assumed that exceptions can be thrown in the event of insufficient memory during a necessary reallocation without a strong exception guarantee being assured for the previous buffer contents. Question Q-0f3d6328fb6bfd73 (open)

Regarding concurrency and constraints, the call takes place synchronously in the context of the calling thread. Since the called instance is modified directly, concurrent access by multiple threads without external synchronization is not thread-safe.

In interplay with other interfaces, this overload complements the further append operators of ara::core::BasicString, including appending strings ([SWS_CORE_03072]), character arrays ([SWS_CORE_03073]), single characters ([SWS_CORE_03074]), or a StringView ([SWS_CORE_03307]). In addition, the initializer list corresponds semantically to the corresponding constructor ([SWS_CORE_03032]).

The member function operator+= of class ara::core::BasicString synchronously appends a character sequence passed via StringView sv to the calling string object and returns a reference to this modified object [SWS_CORE_03307]. The operation is defined via the header file #include "ara/core/string.h", with functional behavior following the general conventions from [basic.string] [SWS_CORE_03307].

Error Handling and Concurrency

With respect to execution, the function is explicitly classified as not exception safe [SWS_CORE_03307]. No specific error codes are prescribed for DET or DEM. Should an internal memory allocation fail when extending the string, the internal state of the instance is likely not guaranteed to remain unchanged. Due to a lack of integrated synchronization mechanisms, a lack of thread safety is to be assumed in the event of concurrent write or read access to the same instance by multiple threads (interpretation). Question Q-1bed85bd42475f62 (open)

Interaction

The operator fits seamlessly into the structure of class ara::core::BasicString and complements the alternative overloads of operator+= for complete strings [SWS_CORE_03072], character pointers const value_type* [SWS_CORE_03073], single characters [SWS_CORE_03074], and initializer lists [SWS_CORE_03075]. Creation of the involved string instances is performed via the corresponding constructors of the class, such as the default constructor [SWS_CORE_03024] or copy and move constructors [SWS_CORE_03033], [SWS_CORE_03034].

use

The function BasicString() from header file #include "ara/core/string.h" is the parameterless default constructor of class ara::core::BasicString ([SWS_CORE_03024]). The call is synchronous and, as a constructor, has no return value. The behavior follows the corresponding definition in [basic.string] ([SWS_CORE_03024]); the created instance is therefore expected to represent an empty string. Question Q-f36b11fa590a6111 (open)

Error Handling and Exception Safety

The element is specified as conditionally exception safe (conditionally exception safe) ([SWS_CORE_03024]). Specific error codes, DET, or DEM messages do not exist according to the specification. Via the signature BasicString () noexcept(noexcept(Allocator()));, exception safety is directly linked to the default constructor of the allocator ([SWS_CORE_03024]). If creating Allocator() throws no exception, construction of BasicString is also guaranteed to be exception-free.

Interaction and Constraints

In the context of the other interfaces of ara::core::BasicString, the following dependencies are relevant:

• If an already instantiated allocator is passed, the signature guarantees unrestricted exception safety (exception safe / noexcept) ([SWS_CORE_03025]).
• Other initializations—such as via substrings ([SWS_CORE_03026], [SWS_CORE_03027]), pointers ([SWS_CORE_03028], [SWS_CORE_03029]), character sequences ([SWS_CORE_03030]), iterators ([SWS_CORE_03031]), initializer lists ([SWS_CORE_03032]), or copy and move operations with allocator ([SWS_CORE_03033], [SWS_CORE_03034])—are by contrast classified as not exception safe.
• The initialized instance can be extended synchronously, including through overloads of operator+= for strings ([SWS_CORE_03072]), character pointers ([SWS_CORE_03073]), single characters ([SWS_CORE_03074]), initializer lists ([SWS_CORE_03075]), and StringView ([SWS_CORE_03307]).
• In addition, the object can be used to construct a Bitset ([SWS_CORE_01749]).

The explicit constructor BasicString(const Allocator &a) from the header file #include "ara/core/string.h" initializes an empty instance of ara::core::BasicString using the passed allocator [SWS_CORE_03025]. The semantic behavior follows C++ standard section [basic.string] [SWS_CORE_03025]. The keyword explicit prevents inadvertent implicit type conversions from an allocator instance [SWS_CORE_03025].

Regarding error handling and exception handling, the function is declared as noexcept and specified as exception safe (exception safe) [SWS_CORE_03025]. In contrast to the default constructor [SWS_CORE_03024], whose exception safety conditionally depends on noexcept(noexcept(Allocator())), this call always guarantees error-free creation without exceptions [SWS_CORE_03025], [SWS_CORE_03024]. Interpretation: The unconditional exception safety is likely due to the fact that no memory-intensive allocation steps have to be performed when initializing an empty string. Question Q-88df57e7a9c2abda (open)

In interaction with other constructors of the class such as [SWS_CORE_03026] or [SWS_CORE_03028], which copy data and are classified as not exception safe (not exception safe), this constructor serves as a safe entry point. The created string can subsequently be dynamically expanded via modifiers such as operator+= ([SWS_CORE_03072], [SWS_CORE_03307]) or used as input for types such as Bitset [SWS_CORE_01749].

use

The function Basic represents a constructor of the class ara::core::BasicString, which is provided via the header file #include "ara/core/string.h" [SWS_CORE_03026]. It synchronously creates a new string as a substring from the source object str starting from the index position pos according to the semantics of [basic.string] [SWS_CORE_03026]. The following parameters are processed:

• str: Reference to the source instance to be copied of type BasicString [SWS_CORE_03026].
• pos: Zero-based start position of the substring of type size_type [SWS_CORE_03026].
• a: Allocator for memory management, which defaults to Allocator() [SWS_CORE_03026].

Error Handling and Exception Safety

The property not exception safe is specified for the function [SWS_CORE_03026]. Neither specific error codes nor DET or DEM messages are defined. Interpretation: Since the constructor follows the standard behavior of [basic.string] and does not guarantee exception safety, invalid index values for pos as well as failing memory allocations should lead to exceptions being thrown [SWS_CORE_03026]. Question Q-7ea120ac992dc5ac (open)

Interplay and Related Requirements

Within ara::core::BasicString, this constructor complements the variant with an additional length restriction n [SWS_CORE_03027] as well as overloads for pointers, iterators, and initializer lists [SWS_CORE_03028], [SWS_CORE_03031], [SWS_CORE_03032]. In contrast to the constructors without a source string, which are conditionally exception-safe [SWS_CORE_03024] or declared as noexcept [SWS_CORE_03025], dynamically taking over substrings requires special consideration of potential allocation errors. In addition, BasicString serves as a parameter basis in other module components such as Bitset [SWS_CORE_01749].

The constructor [SWS_CORE_03027] of class ara::core::BasicString serves for the synchronous creation of a new string as a subsequence from a source string str. Starting from index pos, up to n characters are adopted. Via the optional parameter a, a user-defined allocator can be passed; otherwise, a default allocator instance is created by default. The definition is provided via the header #include "ara/core/string.h".

Regarding robustness, the function is declared as not exception safe ([SWS_CORE_03027]). According to the specification per [basic.string], this constructor is likely to fail if pos exceeds the length of the initial string or if allocation of the new buffer fails. Question Q-31041ea019720daf (open) This is in contrast to default and allocator constructors such as [SWS_CORE_03024] and [SWS_CORE_03025], which are specified as conditionally exception safe or explicitly with noexcept.

In interaction within ara::core::BasicString, the function complements alternative overloads: While [SWS_CORE_03026] copies the substring starting from pos to the end of the string, [SWS_CORE_03027] allows the explicit length restriction. Further alternatives for creation are provided by iterator-based ([SWS_CORE_03031]) or pointer-based initializations ([SWS_CORE_03028]). In addition, the same substring pattern with pos and n is also used in related classes such as Bitset in [SWS_CORE_01749].

The constructor function of class ara::core::BasicString from header ara/core/string.h synchronously creates a string from a pointer s to a character array and an explicit length specification n [SWS_CORE_03028]. Via parameter a, a custom allocator can optionally be passed, which defaults to Allocator() [SWS_CORE_03028]. The semantics correspond to the specification in [basic.string], with the deviation that the parameter type charT is replaced by value_type [SWS_CORE_03028].

In the specification, the function is designated as not exception safe (not exception safe) [SWS_CORE_03028]. This distinguishes it from exception-safe initializations such as the allocator constructor [SWS_CORE_03025] or the conditionally exception-safe default constructor [SWS_CORE_03024]. Specific error codes, return values, or diagnostic messages to DEM or DET are not provided. As an essential precondition, the caller presumably must ensure (interpretation) that s points to a valid memory area with at least n contiguous elements to prevent undefined behavior. Question Q-957a57c885a2e702 (open)

Within class ara::core::BasicString, this overload complements the construction without length specification for null-terminated strings [SWS_CORE_03029] as well as constructors for sequences of identical characters [SWS_CORE_03030] or substrings [SWS_CORE_03027]. After creation, the object can be modified by assignment and concatenation operators [SWS_CORE_03072]. In addition, the resulting string serves as input for interfaces of related data types, for example for the initialization of a Bitset [SWS_CORE_01749].

Constructor [SWS_CORE_03029] initializes an instance of ara::core::BasicString from a null-terminated pointer to strings of type const value_type* and an optional allocator. Its semantics follow the standard definition from [basic.string], with charT replaced by value_type [SWS_CORE_03029]. The header file is #include "ara/core/string.h" [SWS_CORE_03029].

Regarding error behavior and exception safety, the function is explicitly specified as not exception safe [SWS_CORE_03029]. If a memory allocation or error occurs during construction, no exception guarantee is provided. In contrast, standard constructors such as [SWS_CORE_03025] are classified as noexcept and exception safe or [SWS_CORE_03024] as conditionally exception safe (conditionally exception safe).

The specification defines the interplay within the BasicString constructor family:

• If the character count is specified explicitly, the overload with length parameter (const value_type *s, size_type n, ...) according to [SWS_CORE_03028] must be used.
• Further alternatives include substring constructors from existing strings [SWS_CORE_03026], [SWS_CORE_03027], fill constructors [SWS_CORE_03030], as well as iterator [SWS_CORE_03031] and initializer lists [SWS_CORE_03032].
• For subsequent concatenation with raw string pointers, operator+= corresponds according to [SWS_CORE_03073].
• In addition, BasicString serves as a parameter basis in other helper classes such as Bitset according to [SWS_CORE_01749].

Callers must ensure that pointer s is valid and properly null-terminated (interpretation: since without length specification, termination serves to determine length according to standard behavior). Question Q-7e0172674e115dea (open) Because the constructor is executed synchronously, it should be considered in safety-critical contexts that dynamic memory may potentially be obtained via the allocator.

use

The constructor [SWS_CORE_03030] of class ara::core::BasicString (defined in header ara/core/string.h) synchronously creates a string from n copies of character c of type value_type. The functional behavior follows the C++ standard specification [basic.string] with the deviation that charT is replaced by value_type. Optionally, a user-defined allocator a can be passed, for which Allocator() is instantiated by default.

Error Handling and Exception Safety

The specification classifies this constructor as not exception safe, which distinguishes it from guaranteed noexcept constructors such as [SWS_CORE_03025] or the conditionally safe default constructor [SWS_CORE_03024]. Interpretation: The lack of exception safety is likely attributable primarily to failures during dynamic memory allocation for n characters. Question Q-87ae8b5cae690fdb (open) Specific AUTOSAR error codes or messages to DET or DEM are not specified for this call.

Concurrency and Interaction

Concurrent accesses by multiple threads to the same instance without external synchronization are not thread-safe. After creation, the string can be modified via concatenation operators such as operator+= for single characters ([SWS_CORE_03074]) or strings ([SWS_CORE_03072]). The created string can also serve to initialize ara::core::Bitset according to [SWS_CORE_01749]. For alternative creations, constructors via pointers ([SWS_CORE_03028], [SWS_CORE_03029]) or initializer lists ([SWS_CORE_03032]) are available.

use

The template function represents the range constructor of class ara::core::BasicString in header <ara/core/string.h> [SWS_CORE_03031]. It serves for the synchronous initialization of a string from a sequence defined by input iterators begin and end of type InputIterator [SWS_CORE_03031]. Optionally, a user-defined allocator instance can be passed via parameter a; if this parameter remains unset, default instance Allocator() is created [SWS_CORE_03031]. The functional semantics follow the requirements of the C++ standard for [basic.string] [SWS_CORE_03031].

Error Handling and Exception Safety

The specification explicitly declares the function as not exception safe [SWS_CORE_03031]. No AUTOSAR-specific DET or DEM reports are issued, since the behavior corresponds to that of the C++ standard library [SWS_CORE_03031]. Interpretation: The lack of exception safety is likely attributable to possible memory allocation failures by the allocator or failing operations of the passed iterators. Question Q-676411ee17d37217 (open)

Concurrency and Limitations

The call occurs synchronously in the context of the calling thread. Unlike default constructor [SWS_CORE_03024] or the pure allocator constructor [SWS_CORE_03025], this constructor is not declared as noexcept. Callers must therefore ensure that range [begin, end) is valid and the referenced elements can be read without errors.

Interaction

The function complements the alternative constructors of ara::core::BasicString, including substring [SWS_CORE_03026], character array [SWS_CORE_03028], and initializer list overloads [SWS_CORE_03032], which exhibit the same exception classification. After construction, the instance can be modified via concatenation operators such as operator+= [SWS_CORE_03072] or serve to initialize dependent types such as Bitset [SWS_CORE_01749].

The constructor BasicString serves the synchronous initialization of an instance of ara::core::BasicString using an initializer list ([SWS_CORE_03032]). Declaration takes place via header file #include "ara/core/string.h" in the scope of class ara::core::BasicString ([SWS_CORE_03032]). The behavior follows the definition in [basic.string], replacing charT by value_type in standard-compliant fashion ([SWS_CORE_03032]). As parameters, an std::initializer_list<value_type> and optionally an allocator are passed ([SWS_CORE_03032]).

Regarding error handling and exception handling, the constructor is specified as not exception safe ([SWS_CORE_03032]). This distinguishes it from the default constructor ([SWS_CORE_03024]) or the explicit allocator constructor ([SWS_CORE_03025]), which are declared as exception safe or noexcept, respectively. Specific AUTOSAR error codes, DET or DEM messages are not defined for this constructor. Interpretation: In case of insufficient memory, object creation is likely to fail because dynamic memory must be allocated for the elements of the initializer list. Question Q-7ecc7431c1c2f54c (open)

In interaction with module core, the function complements alternative construction methods, such as creation from substrings ([SWS_CORE_03026], [SWS_CORE_03027]), pointers ([SWS_CORE_03028], [SWS_CORE_03029]), or iterators ([SWS_CORE_03031]). For subsequently extending an existing string by an initializer list, the corresponding operator+= is available ([SWS_CORE_03075]). In addition, created BasicString instances can be used to initialize related data types such as Bitset ([SWS_CORE_01749]).

The copy constructor [SWS_CORE_03033] of class ara::core::BasicString serves to synchronously create a new string as a copy of an existing instance with explicit passing of an allocator. The function declaration BasicString (const BasicString &, const Allocator &); is provided via header #include "ara/core/string.h" [SWS_CORE_03033]. The functional semantics adhere to the corresponding usage in the standard pattern [basic.string] [SWS_CORE_03033].

With regard to error handling, the constructor function is explicitly classified in the specification as not exception safe [SWS_CORE_03033]. Specific AUTOSAR error codes or notifications to diagnostic modules such as DET or DEM do not exist for this call; exceptions during dynamic memory allocation by the allocator are therefore likely subject to the general behavior of [basic.string]. Question Q-496b847c39fc25ae (open)

Regarding concurrency and constraints, passing the source instance via const BasicString & requires that the source object is not modified concurrently during the copy operation. Concurrent read accesses from multiple threads are permissible, whereas unprotected parallel write accesses presumably lead to data inconsistencies. Question Q-daa5ef2c4672b657 (open)

In interaction with related specification elements, the constructor stands alongside alternative initialization paths such as the move constructor with allocator [SWS_CORE_03034], the default constructor [SWS_CORE_03024], or the allocator constructor [SWS_CORE_03025]. The created object can be modified seamlessly via operators such as operator+= [SWS_CORE_03072] or used to initialize dependent types such as Bitset [SWS_CORE_01749].

The move constructor [SWS_CORE_03034] of class ara::core::BasicString is provided via header file #include "ara/core/string.h". It synchronously creates a new string by taking over the data of an existing instance and binding it to an explicitly specified allocator. The semantic behavior and requirements correspond to the definitions of the ISO C++ standard in [basic.string].

In the call context, the function requires two parameters: an rvalue reference to a source object (BasicString&&) as well as an allocator instance (const Allocator&). The source object remains in a valid but modified state after the move operation. Regarding error handling, the function in [SWS_CORE_03034] is classified as not exception safe. Interpretation: This is likely attributable to the fact that with a differing or incompatible allocator, new memory must be allocated and the elements must be copied, which can fail in case of memory shortage. Question Q-2a89ad749ae1b2f6 (open) This distinguishes the constructor from strictly exception-safe overloads such as [SWS_CORE_03025] or conditionally exception-safe variants such as [SWS_CORE_03024].

In interaction within core, the signature complements the range of creation methods alongside the copy constructor with allocator [SWS_CORE_03033] and substring initializers such as [SWS_CORE_03026]. After successful instantiation, the string can be modified, for example by appending content via operator+= ([SWS_CORE_03072], [SWS_CORE_03307]), or serve as input for dependent data types such as Bitset according to [SWS_CORE_01749].

Usage and Semantics

The member function append of class ara::core::BasicString ([SWS_CORE_03076]) from header file #include "ara/core/string.h" serves to synchronously append a complete string object str of type BasicString to the calling instance. The semantics follow the standardized C++ definition under [basic.string]; as return value, the function returns a reference to the modified object (*this) ([SWS_CORE_03076]).

Error Handling and Boundary Conditions

Regarding exception safety, the operation is explicitly classified as not exception safe ([SWS_CORE_03076]). Interpretation: If an error occurs during execution (for example, in case of insufficient memory), the state of the string is likely indeterminate, as no recovery guarantees are specified. Question Q-57504af4ee633d0b (open) In contrast to variants with position indices such as [SWS_CORE_03077] or [SWS_CORE_03309] (triggering IsoStdOutOfRangeViolation) or buffer size checks such as [SWS_CORE_03078] (triggering IsoStdLengthErrorViolation), [SWS_CORE_03076] defines no separate violations.

Interplay and overloads

The function is part of a family of overloads within ara::core::BasicString:

• Appending substrings via position and length specifications ([SWS_CORE_03077]).
• Taking character arrays of type value_type* with defined length ([SWS_CORE_03078]) or as a null-terminated string ([SWS_CORE_03079]).
• Repeated appending of single characters ([SWS_CORE_03080]) or assignment via std::initializer_list<value_type> ([SWS_CORE_03082]).
• Integrating iterator ranges ([SWS_CORE_03081]) as well as string views via StringView ([SWS_CORE_03308]) and type-specific templates ([SWS_CORE_03309]).

The member function append of class ara::core::BasicString ([SWS_CORE_03077], declared in #include "ara/core/string.h") synchronously appends a substring of another BasicString instance str to the current object. The parameters pos and n (by default npos) determine the start index and the maximum number of characters within str. A reference to the modified target object (*this) is returned as the return value.

Regarding semantics and interface behavior, the function follows the definition in [basic.string] of the C++ standard, but deviates in error handling: If pos > str.size() holds, a IsoStdOutOfRangeViolation is triggered in accordance with [SWS_CORE_03077] (analogous to std::out_of_range). The specification explicitly classifies the operation as not exception safe, which is why no assurance of an unchanged or consistent object state is given in the event of an error.

In the absence of documented synchronization mechanisms, concurrent calls on the same instance are likely not thread-safe. Question Q-ec3b029fca94ad8a (open) Further overloads are available in the module for alternative data sources: whole strings ([SWS_CORE_03076]), buffers and pointers ([SWS_CORE_03078], [SWS_CORE_03079]), character repetitions ([SWS_CORE_03080]), iterator pairs ([SWS_CORE_03081]), initializer lists ([SWS_CORE_03082]), and StringView objects ([SWS_CORE_03308], [SWS_CORE_03309]).

The member function append of class ara::core::BasicString ([SWS_CORE_03078]) synchronously appends the first n characters of the passed character array s of type const value_type* to the existing string. As return value, the function returns a reference to the modified instance (BasicString&), which enables chaining consecutive calls. The declaration is available via header file #include "ara/core/string.h".

The functional behavior follows the specification of std::basic_string::append according to [basic.string], but exhibits specific AUTOSAR deviations ([SWS_CORE_03078]):

• The template parameter charT is replaced by type value_type.
• If the resulting length exceeds the capacity limit (condition size() > n + max_size()), the violation IsoStdLengthErrorViolation is triggered instead of a std::length_error.

Regarding execution safety, the operation is explicitly specified as not exception safe ([SWS_CORE_03078]). If an error or violation occurs during memory allocation or copying, the object does not guarantee a consistent intermediate state.

The method complements the other overloads of append within ara::core::BasicString. These include appending complete instances ([SWS_CORE_03076]), substrings with bounds checking via IsoStdOutOfRangeViolation ([SWS_CORE_03077]), null-terminated strings ([SWS_CORE_03079]), sequences of identical characters ([SWS_CORE_03080]), iterator ranges ([SWS_CORE_03081]), initializer lists ([SWS_CORE_03082]), and StringView objects ([SWS_CORE_03308], [SWS_CORE_03309]).

The member function append of class ara::core::BasicString ([SWS_CORE_03079]) appends a null-terminated string of pointer type const value_type* to the existing string. The semantics correspond to the behavior from the C++ standard [basic.string], where charT is replaced by value_type. As return value, the synchronous function returns a reference to the calling object (BasicString&), which enables the chaining of successive operations.

Regarding error handling and exception safety, the operation is explicitly classified as not exception safe ([SWS_CORE_03079]). In contrast to the overload with length specification [SWS_CORE_03078], which triggers a IsoStdLengthErrorViolation when the maximum length is exceeded, or substring overloads such as [SWS_CORE_03077] with IsoStdOutOfRangeViolation, this variant does not define any specific violation classes. It should be the caller's responsibility to ensure that the passed pointer s points to a valid, null-terminated character sequence. Question Q-4e959f75f98977eb (open)

The function is part of a family of overloads for appending data in ara::core::BasicString:

• Appending complete or partial strings of the same type ([SWS_CORE_03076], [SWS_CORE_03077]),
• Appending pointer prefixes with an explicit length restriction ([SWS_CORE_03078]),
• Appending character repetitions ([SWS_CORE_03080]) or initializer lists ([SWS_CORE_03082]),
• Processing iterator ranges ([SWS_CORE_03081]) as well as string views ([SWS_CORE_03308], [SWS_CORE_03309]).

The member function append of ara::core::BasicString ([SWS_CORE_03080]) synchronously appends a specified count n of characters of type value_type (parameter c) to the existing string. It is provided via the header ara/core/string.h and returns a reference to the modified instance (*this), which enables chained calls.

The functional behavior follows the definition of the C++ standard for [basic.string], where charT is replaced by value_type ([SWS_CORE_03080]). Regarding exception safety, the function is explicitly classified as not exception safe ([SWS_CORE_03080]). In contrast to other overloads such as [SWS_CORE_03077] or [SWS_CORE_03078], no specific runtime violations like IsoStdOutOfRangeViolation or IsoStdLengthErrorViolation are defined for this variant. Presumably, the method does not guarantee an unchanged state of the instance in case of an error. Question Q-15af6c12a1a342a9 (open)

In the context of concurrency and thread safety, it must be noted that concurrent write accesses to the same instance of BasicString presumably must be synchronized externally. Question Q-1e8a1511516e4cd8 (open) The function complements the other overloads of append in ara::core::BasicString, which cover appending complete strings ([SWS_CORE_03076]), subranges ([SWS_CORE_03077]), pointer buffers ([SWS_CORE_03078], [SWS_CORE_03079]), iterator ranges ([SWS_CORE_03081]), initializer lists ([SWS_CORE_03082]), or StringView objects ([SWS_CORE_03308], [SWS_CORE_03309]).

Usage and Semantics

The template member function append of class ara::core::BasicString is provided via the header file ara/core/string.h [SWS_CORE_03081]. It synchronously appends a sequence of characters bounded by the iterator pair first and last of category InputIterator to the existing string [SWS_CORE_03081]. The functional behavior complies with the corresponding definition in [basic.string] of the C++ standard [SWS_CORE_03081]. The operation returns a reference to the modified BasicString object (*this) as return value [SWS_CORE_03081].

Error Handling and Exception Safety

For this function, exception safety is explicitly specified as not exception safe [SWS_CORE_03081]. In the event of an error—for example, if dynamic memory is exhausted during buffer expansion—the instance should remain in an invalid state according to interpretation. Question Q-600c7dacc868877c (open) Specific AUTOSAR violations such as IsoStdOutOfRangeViolation or IsoStdLengthErrorViolation are not defined for this iterator overload, unlike other overloads of method [SWS_CORE_03077], [SWS_CORE_03078].

Interplay in the module

The function is part of an extensive group of overloads for appending data to ara::core::BasicString:

• Appending complete or partial strings of type BasicString [SWS_CORE_03076], [SWS_CORE_03077].
• Appending character arrays with length specification or null-terminated character sequences [SWS_CORE_03078], [SWS_CORE_03079].
• Repeated appending of single characters [SWS_CORE_03080] as well as adoption from std::initializer_list [SWS_CORE_03082].
• Integration of modern string views via StringView or generic view types [SWS_CORE_03308], [SWS_CORE_03309].

The iterator variant [SWS_CORE_03081] thereby offers maximum flexibility for integrating arbitrary generic data sources.

The member function append of class ara::core::BasicString synchronously appends the characters of an initializer list of type std::initializer_list<value_type> to the existing string object [SWS_CORE_03082]. The behavior follows the semantics of [basic.string] from the C++ standard with the difference that charT is replaced by value_type [SWS_CORE_03082]. The call modifies the instance directly and returns a reference to the object, enabling method chaining.

Regarding error handling, the function is classified as not exception-safe (not exception safe) [SWS_CORE_03082]. Unlike related overloads such as [SWS_CORE_03077] or [SWS_CORE_03078], this variant does not define specific violations such as IsoStdOutOfRangeViolation or IsoStdLengthErrorViolation. Interpretation: If the internal memory allocation fails, the object presumably remains in an undefined state. Question Q-169750518dc1904b (open) Since the internal state is modified, a concurrent call without external synchronization is likely to result in data races.

In interplay within ara::core::BasicString, the function is part of a group of related append operations. It complements overloads for entire strings ([SWS_CORE_03076]), subranges ([SWS_CORE_03077]), pointers to strings ([SWS_CORE_03078], [SWS_CORE_03079]), repeated single characters ([SWS_CORE_03080]), iterator ranges ([SWS_CORE_03081]), and StringView instances ([SWS_CORE_03308], [SWS_CORE_03309]).

use

The synchronous member function append of class ara::core::BasicString appends the characters of a passed string view (StringView sv) to the existing string [SWS_CORE_03308]. The interface is included via header #include "ara/core/string.h" [SWS_CORE_03308]. It returns a reference to the calling instance (BasicString &), allowing multiple modifications to be chained [SWS_CORE_03308]. The functional semantics follow the corresponding specification in C++ [basic.string] [SWS_CORE_03308].

Error Handling and Exception Safety

In AUTOSAR, the function is explicitly specified as not exception safe ("not exception safe") [SWS_CORE_03308]. Specific error codes, DET or DEM messages, and explicit AUTOSAR violations are not specified for this call, whereas related overloads such as [SWS_CORE_03077] or [SWS_CORE_03309] trigger a IsoStdOutOfRangeViolation on index overflow and [SWS_CORE_03078] triggers a IsoStdLengthErrorViolation on length overflow.

Concurrency and Interaction

Since append directly modifies the state of the invoked string object, concurrent access by multiple threads to the same instance without external synchronization is likely not thread-safe. Question Q-814665e285846c8e (open) The method is grouped with further append variants of ara::core::BasicString, which allow appending complete BasicString instances [SWS_CORE_03076], C strings [SWS_CORE_03079], repeated single characters [SWS_CORE_03080], as well as iterator ranges [SWS_CORE_03081] or initializer lists [SWS_CORE_03082].

use

The template function append of class ara::core::BasicString ([SWS_CORE_03309]) from the header file #include "ara/core/string.h" serves to synchronously append a subrange of an object t to the calling string. The behavior is oriented toward the ISO C++ specification [basic.string]. The parameter pos specifies the start index in the source object, while n determines the maximum number of characters to append (default value npos). A reference to the modified string object (*this) is provided as return value. Interpretation: The passed object t is likely interpreted internally as a string view sv. Question Q-9752a5eeaf05b684 (open)

Error handling

AUTOSAR defines a specific deviation from the C++ standard for this function: If the specified position is greater than the size of the source range (pos > sv.size()), a IsoStdOutOfRangeViolation is triggered instead of std::out_of_range ([SWS_CORE_03309]). The semantic description of this violation corresponds to that of std::out_of_range.

Restrictions and Exception Safety

The operation is explicitly classified as not exception safe in the specification ([SWS_CORE_03309]). In the event of occurring errors, a stable retention of the previous state is therefore not guaranteed.

Interaction

The function complements the other variants for string extension in ara::core::BasicString. These include overloads for complete BasicString instances ([SWS_CORE_03076]) or their subranges ([SWS_CORE_03077]), C strings with length specification ([SWS_CORE_03078]) or as null-terminated pointers ([SWS_CORE_03079]), character repetitions ([SWS_CORE_03080]), iterator ranges ([SWS_CORE_03081]), initializer lists ([SWS_CORE_03082]), and separate StringView objects ([SWS_CORE_03308]).

The member function assign of class ara::core::BasicString serves to synchronously assign the content of an existing string to the calling instance according to the behavior of [basic.string] [SWS_CORE_03084]. The function is provided via header ara/core/string.h and accepts a const reference to a BasicString object (const BasicString &str). As return value, it returns a reference to the modified target object (*this), which enables method chaining [SWS_CORE_03084].

Regarding robustness, the function is explicitly specified as not exception safe [SWS_CORE_03084]. During dynamic memory allocations during the copy process, errors can occur that are not caught by exception guarantees; in case of error, the instance presumably remains in an undefined state. Question Q-0ddd5ac03e56490f (open) Specific AUTOSAR error codes or messages to DET or DEM are not provided for this assignment function.

In interplay with other interfaces, assign represents the copy variant within a family of assignment functions. While the moving overload [SWS_CORE_03085] is declared as conditionally exception safe, the remaining assignments—such as via substrings [SWS_CORE_03086], string views [SWS_CORE_03087], or iterator ranges [SWS_CORE_03091]—share the property not exception safe. Since thread safety is not specified, a concurrent call on the same instance without external synchronization is likely not reentrant and not data-safe. Question Q-37d67c851a296f55 (open)

The move overload of the member function assign according to [SWS_CORE_03085] synchronously assigns the content of the rvalue reference str to an existing instance of ara::core::BasicString (declared in the header file ara/core/string.h). The function returns a reference to the calling object (*this). The functional behavior complies with the corresponding definition in [basic.string] of the C++ standard.

With respect to error and exception handling, the method is declared as conditionally exception-safe (conditionally exception safe) [SWS_CORE_03085]. Throwing exceptions is excluded per noexcept if and only if the allocator propagates the move assignment (propagate_on_container_move_assignment::value) or allocator instances are always considered equal (is_always_equal::value). Unlike other assignment functions such as [SWS_CORE_03086] or [SWS_CORE_03088], which trigger specific violations such as IsoStdOutOfRangeViolation and IsoStdLengthErrorViolation upon range or length violations and are considered not exception safe, this operation does not define any separate AUTOSAR violations.

In interplay with alternative overloads of BasicString::assign—such as for constant lvalue references according to [SWS_CORE_03084], views via [SWS_CORE_03087], or string buffers according to [SWS_CORE_03089]—the rvalue variant enables a resource-efficient assignment without reallocating memory. Interpretation: After the transfer, the source object str presumably remains in a valid but unspecified state, as is typical for move operations according to [basic.string]. Question Q-88c8157963cdd7e0 (open)

The member function assign of class ara::core::BasicString ([SWS_CORE_03086]), provided via header ara/core/string.h, synchronously assigns a subrange of a passed source string str to the current instance. In addition to the source reference str, the call takes the start index pos and optionally the number of characters n, for which npos is defined by default. After the assignment, a reference to the modified object (*this) is returned. The functional semantics basically conform to the specifications from [basic.string] ([SWS_CORE_03086]).

In error handling, there is an explicit deviation from the ISO C++ standard: if condition pos > str.size() holds, no std::out_of_range is triggered, but a IsoStdOutOfRangeViolation is caused ([SWS_CORE_03086]). In addition, the function is explicitly classified in the specification as not exception safe ([SWS_CORE_03086]).

Among the assignment methods of ara::core::BasicString, this substring overload complements the assignment of complete strings ([SWS_CORE_03084]), the conditionally exception-safe move assignment ([SWS_CORE_03085]), assignment from a StringView ([SWS_CORE_03087]), and operations with character buffers ([SWS_CORE_03088]) or iterator ranges ([SWS_CORE_03091]).

use

The member function assign for StringView ([SWS_CORE_03087]) synchronously replaces the content of a ara::core::BasicString instance with the characters of the passed string view. The semantics follow the corresponding definition in [basic.string] of the C++ standard library. As return value, the function returns a reference to the modified target object (BasicString &), which enables chaining consecutive method calls. The declaration is provided via header file #include "ara/core/string.h".

Error Handling and Exception Safety

The function is designated in the specification as not exception safe ([SWS_CORE_03087]). Interpretation: If the assignment requires increasing the internal buffer capacity and this memory allocation fails, an exception is likely thrown without any guarantee for the unchanged state of the instance. Question (open)

Concurrency and Limitations

Interpretation: Calls to assign on the same instance of ara::core::BasicString are not thread-safe and require external synchronization in the case of concurrent read or write access by multiple threads. Question Q-12774d6cd363b032 (open)

Interaction

The function complements the assignment spectrum of ara::core::BasicString with type-safe views. It exists alongside the overloads for copy and move assignments ([SWS_CORE_03084], [SWS_CORE_03085]), substrings ([SWS_CORE_03086]), pointers to character data ([SWS_CORE_03088], [SWS_CORE_03089]), character repetitions ([SWS_CORE_03090]), iterator ranges ([SWS_CORE_03091]), and initializer lists ([SWS_CORE_03092]).

use

The member function assign of class ara::core::BasicString synchronously assigns the first n characters from the passed character array s of type const value_type* to the current string instance and returns a reference to the modified object (*this) [SWS_CORE_03088]. The functional behavior basically conforms to the definition according to [basic.string], with AUTOSAR replacing the generic parameter type charT with value_type [SWS_CORE_03088].

Error Handling and Boundary Conditions

The assignment is specified as not exception safe (not exception safe) [SWS_CORE_03088]. If the specified length n exceeds the maximum representable size max_size() (n > max_size()), the function triggers the AUTOSAR violation IsoStdLengthErrorViolation instead of std::length_error [SWS_CORE_03088]. Interpretation: The caller likely must ensure that s points to at least n valid characters, since the specification defines no separate buffer check. Question Q-290c36db79f27a0a (open)

Interaction

The function is primarily suitable for non-null-terminated buffers or subranges of arrays. It complements the overload assign(const value_type* s) [SWS_CORE_03089], where the length is determined implicitly. In the class context of ara::core::BasicString, there are further assignment overloads for taking existing strings via copy [SWS_CORE_03084] or move [SWS_CORE_03085], for assigning substrings with index checking [SWS_CORE_03086], for adopting from StringView [SWS_CORE_03087], as well as for character repetitions [SWS_CORE_03090], iterator ranges [SWS_CORE_03091], and initializer lists [SWS_CORE_03092].

The synchronous member function assign of class ara::core::BasicString ([SWS_CORE_03089]) from header ara/core/string.h replaces the current content of a string object with the passed character sequence s of type const value_type*. The call returns a reference to the modified object (*this). The functional behavior follows the specifications of the ISO C++ standard for [basic.string] with the documented deviation that character type charT is replaced by value_type ([SWS_CORE_03089]). Interpretation: Due to the lack of a separate length parameter, pointer s will likely point to a null-terminated character array. Question Q-eea79e929750c27f (open)

With respect to error handling and robustness, the assignment function is classified as not exception safe (not exception safe) ([SWS_CORE_03089]). In contrast to related overloads such as assign(const BasicString&, size_type, size_type) ([SWS_CORE_03086]) or assign(const value_type*, size_type) ([SWS_CORE_03088]), no specific runtime violations such as IsoStdOutOfRangeViolation or IsoStdLengthErrorViolation are defined for this variant.

In module core, the function is part of a comprehensive overload family for content assignment. In addition to raw pointers, this also covers complete strings ([SWS_CORE_03084]), move semantics ([SWS_CORE_03085]), StringView instances ([SWS_CORE_03087]), repeated single characters ([SWS_CORE_03090]), iterator ranges ([SWS_CORE_03091]), and initializer lists ([SWS_CORE_03092]). AUTOSAR also provides similar assignment patterns in container types such as ara::core::Vector ([SWS_CORE_01328]).

use

The member function assign of class ara::core::BasicString (defined in #include "ara/core/string.h") synchronously replaces the current content of the string with n consecutive copies of character c of type value_type [SWS_CORE_03090]. The semantics correspond to the specification for [basic.string] with the deviation that the type parameter charT is replaced by value_type [SWS_CORE_03090]. As return value, the function provides an lvalue reference to the modified instance (*this), enabling the chaining of further operations.

Error Handling and Exception Safety

According to the specification, the operation is explicitly classified as not exception safe [SWS_CORE_03090]. Unlike other overloads that trigger defined violations such as IsoStdOutOfRangeViolation [SWS_CORE_03086] or IsoStdLengthErrorViolation [SWS_CORE_03088] upon boundary violations, this function names no specific violations. If a required memory allocation fails, no assurances exist regarding the continuation of the previous object state.

Concurrency and Limitations

Since the assignment modifies the internal buffer directly and no internal synchronization is specified, concurrent access by multiple threads to the same instance will likely not be thread-safe (Interpretation). Question Q-50f419c4bca5c151 (open) Concurrent calls must be coordinated externally by the caller.

Interaction

The function complements the assignment portfolio of ara::core::BasicString, which, in addition to copy and move assignments [SWS_CORE_03084], [SWS_CORE_03085] as well as iterators and initializer lists [SWS_CORE_03091], [SWS_CORE_03092], also provides interfaces for string views [SWS_CORE_03087]. A comparable assignment pattern with a repetition count exists analogously for ara::core::Vector::assign [SWS_CORE_01329].