Module `IR.Pvar`

module F = Stdlib.Format

type translation_unit = IBase.SourceFile.t option

val compare_translation_unit : translation_unit -> translation_unit -> int

type t

Type for program variables. There are 4 kinds of variables:

local variables, used for local variables and formal parameters
callee program variables, used to handle recursion (x | callee is distinguished from x)
global variables
seed variables, used to store the initial value of formal parameters

val compare : t -> t -> int
val yojson_of_t : t -> Ppx_yojson_conv_lib.Yojson.Safe.t

val compare_modulo_this : t -> t -> int: Comparison considering all pvars named 'this'/'self' to be equal

val equal : t -> t -> bool: Equality for pvar's

val get_declaring_function : t -> Procname.t option: if not a global, return function declaring var

val d : t -> unit: Dump a program variable.

val get_name : t -> Mangled.t: Get the name component of a program variable.

val get_ret_pvar : Procname.t -> t: get_ret_pvar proc_name retuns the return pvar associated with the procedure name

val get_ret_param_pvar : Procname.t -> t: get_ret_param_pvar proc_name retuns the return_param pvar associated with the procedure name

val get_simplified_name : t -> string: Get a simplified version of the name component of a program variable.

val is_abduced : t -> bool: Check if the pvar is an abduced return var or param passed by ref

val is_callee : t -> bool: Check if the pvar is a callee var

val is_global : t -> bool: Check if the pvar is a global var or a static local var

val is_static_local : t -> bool: Check if the pvar is a static variable declared inside a function

val is_constant_array : t -> bool: Check if the pvar has a constant array type

val is_const : t -> bool: Check if the pvar has a const type

val is_local : t -> bool: Check if the pvar is a (non-static) local var

val is_seed : t -> bool: Check if the pvar is a seed var

val is_return : t -> bool: Check if the pvar is a return var

val is_this : t -> bool: Check if a pvar is the special "this" var

val is_self : t -> bool: Check if a pvar is the special "self" var

val is_frontend_tmp : t -> bool: return true if pvar is a temporary variable generated by the frontend

val is_clang_tmp : t -> bool: return true if pvar is a temporary variable generated by clang

val is_ssa_frontend_tmp : t -> bool: return true if pvar is a temporary variable generated by the frontend and is only assigned once on a non-looping control-flow path

val is_cpp_temporary : t -> bool: return true if this pvar represents a C++ temporary object (see http://en.cppreference.com/w/cpp/language/lifetime)

val is_objc_static_local_of_proc_name : string -> t -> bool: Check if a pvar is a local static in objc

val is_block_pvar : t -> bool: Check if a pvar is a local pointing to a block in objc

val mk : Mangled.t -> Procname.t -> t: mk name proc_name creates a program var with the given function name

val mk_abduced_ref_param : Procname.t -> int -> IBase.Location.t -> t: create an abduced variable for a parameter passed by reference

val mk_abduced_ret : Procname.t -> IBase.Location.t -> t: create an abduced return variable for a call to proc_name at loc

val mk_callee : Mangled.t -> Procname.t -> t: mk_callee name proc_name creates a program var for a callee function with the given function name

val mk_global : ?⁠is_constexpr:bool -> ?⁠is_ice:bool -> ?⁠is_pod:bool -> ?⁠is_static_local:bool -> ?⁠is_static_global:bool -> ?⁠is_constant_array:bool -> ?⁠is_const:bool -> ?⁠translation_unit:IBase.SourceFile.t -> Mangled.t -> t: create a global variable with the given name

val mk_tmp : string -> Procname.t -> t: create a fresh temporary variable local to procedure pname. for use in the frontends only!

val pp : IStdlib.Pp.env -> F.formatter -> t -> unit: Pretty print a program variable.

val pp_value : F.formatter -> t -> unit: Pretty print a pvar which denotes a value, not an address

val pp_value_non_verbose : F.formatter -> t -> unit: Non-verbose version of pp_value

val pp_translation_unit : F.formatter -> translation_unit -> unit
val to_callee : Procname.t -> t -> t: Turn an ordinary program variable into a callee program variable

val to_seed : t -> t: Turn a pvar into a seed pvar (which stores the initial value of a stack var)

val to_string : t -> string: Convert a pvar to string.

val get_translation_unit : t -> translation_unit: Get the translation unit corresponding to a global. Raises Invalid_arg if not a global.

val is_compile_constant : t -> bool: Is the variable's value a compile-time constant? Always (potentially incorrectly) returns false for non-globals.

val is_ice : t -> bool: Is the variable's type an integral constant expression? Always (potentially incorrectly) returns false for non-globals.

val is_pod : t -> bool: Is the variable's type a "Plain Old Data" type (C++)? Always (potentially incorrectly) returns true for non-globals.

val is_local_to_procedure : Procname.t -> t -> bool
val get_initializer_pname : t -> Procname.t option: Get the procname of the initializer function for the given global variable

val build_formal_from_pvar : t -> Mangled.t: build_formal_from_pvar var Return a name that is composed of the name of var (and the name of the procname in case of locals)

val materialized_cpp_temporary : string
val swap_proc_in_local_pvar : t -> Procname.t -> t

module Set : IStdlib.PrettyPrintable.PPSet with type PPSet.elt = t: Sets of pvars.

val get_pvar_formals : ProcAttributes.t -> (t * Typ.t) list: Return pvar and type of formal parameters