github.com/distbuild/reclient@v0.0.0-20240401075343-3de72e395564/internal/pkg/inputprocessor/action/headerabi/preprocessor.go (about)

     1  // Copyright 2023 Google LLC
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  // Package headerabi performs include processing given a valid ABI header dump action.
    16  package headerabi
    17  
    18  import (
    19  	"fmt"
    20  
    21  	"github.com/bazelbuild/reclient/internal/pkg/inputprocessor/action/cppcompile"
    22  	"github.com/bazelbuild/reclient/internal/pkg/inputprocessor/flags"
    23  )
    24  
    25  // Preprocessor is the preprocessor of header-abi-dumper actions.
    26  type Preprocessor struct {
    27  	*cppcompile.Preprocessor
    28  }
    29  
    30  // ParseFlags parses the commands flags and populates the ActionSpec object with inferred
    31  // information.
    32  func (p *Preprocessor) ParseFlags() error {
    33  	f, err := Parser{}.ParseFlags(p.Ctx, p.Options.Cmd, p.Options.WorkingDir, p.Options.ExecRoot)
    34  	if err != nil {
    35  		p.Err = fmt.Errorf("flag parsing failed. %v", err)
    36  		return p.Err
    37  	}
    38  	p.Flags = f
    39  	p.FlagsToActionSpec()
    40  	return nil
    41  }
    42  
    43  // ComputeSpec computes cpp header dependencies.
    44  func (p *Preprocessor) ComputeSpec() error {
    45  	p.Flags = headerABIToCppFlags(p.Flags)
    46  	return p.Preprocessor.ComputeSpec()
    47  }
    48  
    49  func headerABIToCppFlags(f *flags.CommandFlags) *flags.CommandFlags {
    50  	// Ignore --root-dir argument since it is specific to the header-abi-dumper
    51  	// command and doesn't translate into a clang-argument.
    52  	res := f.Copy()
    53  	res.Flags = []*flags.Flag{}
    54  	for i := 0; i < len(f.Flags); i++ {
    55  		if f.Flags[i].Key == "--root-dir" {
    56  			continue
    57  		}
    58  		res.Flags = append(res.Flags, f.Flags[i])
    59  	}
    60  	return res
    61  }