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use gccjit::RValue;
use rustc_codegen_ssa::mir::debuginfo::{FunctionDebugContext, VariableKind};
use rustc_codegen_ssa::traits::{DebugInfoBuilderMethods, DebugInfoMethods};
use rustc_middle::mir;
use rustc_middle::ty::{Instance, PolyExistentialTraitRef, Ty};
use rustc_span::{SourceFile, Span, Symbol};
use rustc_target::abi::call::FnAbi;
use rustc_target::abi::Size;
use std::ops::Range;

use crate::builder::Builder;
use crate::context::CodegenCx;

impl<'a, 'gcc, 'tcx> DebugInfoBuilderMethods for Builder<'a, 'gcc, 'tcx> {
    // FIXME(eddyb) find a common convention for all of the debuginfo-related
    // names (choose between `dbg`, `debug`, `debuginfo`, `debug_info` etc.).
    fn dbg_var_addr(
        &mut self,
        _dbg_var: Self::DIVariable,
        _scope_metadata: Self::DIScope,
        _variable_alloca: Self::Value,
        _direct_offset: Size,
        _indirect_offsets: &[Size],
        _fragment: Option<Range<Size>>,
    ) {
        unimplemented!();
    }

    fn insert_reference_to_gdb_debug_scripts_section_global(&mut self) {
        // TODO(antoyo): insert reference to gdb debug scripts section global.
    }

    fn set_var_name(&mut self, _value: RValue<'gcc>, _name: &str) {
        unimplemented!();
    }

    fn set_dbg_loc(&mut self, _dbg_loc: Self::DILocation) {
        unimplemented!();
    }
}

impl<'gcc, 'tcx> DebugInfoMethods<'tcx> for CodegenCx<'gcc, 'tcx> {
    fn create_vtable_debuginfo(
        &self,
        _ty: Ty<'tcx>,
        _trait_ref: Option<PolyExistentialTraitRef<'tcx>>,
        _vtable: Self::Value,
    ) {
        // TODO(antoyo)
    }

    fn create_function_debug_context(
        &self,
        _instance: Instance<'tcx>,
        _fn_abi: &FnAbi<'tcx, Ty<'tcx>>,
        _llfn: RValue<'gcc>,
        _mir: &mir::Body<'tcx>,
    ) -> Option<FunctionDebugContext<'tcx, Self::DIScope, Self::DILocation>> {
        // TODO(antoyo)
        None
    }

    fn extend_scope_to_file(
        &self,
        _scope_metadata: Self::DIScope,
        _file: &SourceFile,
    ) -> Self::DIScope {
        unimplemented!();
    }

    fn debuginfo_finalize(&self) {
        // TODO(antoyo)
    }

    fn create_dbg_var(
        &self,
        _variable_name: Symbol,
        _variable_type: Ty<'tcx>,
        _scope_metadata: Self::DIScope,
        _variable_kind: VariableKind,
        _span: Span,
    ) -> Self::DIVariable {
        unimplemented!();
    }

    fn dbg_scope_fn(
        &self,
        _instance: Instance<'tcx>,
        _fn_abi: &FnAbi<'tcx, Ty<'tcx>>,
        _maybe_definition_llfn: Option<RValue<'gcc>>,
    ) -> Self::DIScope {
        unimplemented!();
    }

    fn dbg_loc(
        &self,
        _scope: Self::DIScope,
        _inlined_at: Option<Self::DILocation>,
        _span: Span,
    ) -> Self::DILocation {
        unimplemented!();
    }
}