Struct VarDebugInfo

pub struct VarDebugInfo<'tcx> {
    pub name: Symbol,
    pub source_info: SourceInfo,
    pub composite: Option<Box<VarDebugInfoFragment<'tcx>>>,
    pub value: VarDebugInfoContents<'tcx>,
    pub argument_index: Option<u16>,
}

Debug information pertaining to a user variable.

Fields

name: Symbol

source_info: SourceInfo

Source info of the user variable, including the scope within which the variable is visible (to debuginfo) (see LocalDecl’s source_info field for more details).

composite: Option<Box<VarDebugInfoFragment<'tcx>>>

The user variable’s data is split across several fragments, each described by a VarDebugInfoFragment. See DWARF 5’s “2.6.1.2 Composite Location Descriptions” and LLVM’s DW_OP_LLVM_fragment for more details on the underlying debuginfo feature this relies on.

value: VarDebugInfoContents<'tcx>

Where the data for this user variable is to be found.

argument_index: Option<u16>

When present, indicates what argument number this variable is in the function that it originated from (starting from 1). Note, if MIR inlining is enabled, then this is the argument number in the original function before it was inlined.