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with full ParseTranslationUnit2FullArgv #379

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70 changes: 63 additions & 7 deletions _xtool/internal/clang/clang.go
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Original file line number Diff line number Diff line change
Expand Up @@ -2,11 +2,15 @@ package clang

import (
"errors"
"os/exec"
"unsafe"

"github.com/goplus/lib/c"
"github.com/goplus/lib/c/clang"
"github.com/goplus/llcppg/_xtool/internal/clangtool"
)

const (
LLGoPackage = "link: -L$(llvm-config --libdir) -lclang; -lclang"
)

type Config struct {
Expand All @@ -26,8 +30,14 @@ const TEMP_FILE = "temp.h"
func CreateTranslationUnit(config *Config) (*clang.Index, *clang.TranslationUnit, error) {
// default use the c/c++ standard of clang; c:gnu17 c++:gnu++17
// https://clang.llvm.org/docs/CommandGuide/clang.html
allArgs := clangtool.WithSysRoot(append(defaultArgs(config.IsCpp), config.Args...))

executableName := "clang"
path, err := exec.LookPath(executableName)
if err != nil {
return nil, nil, err
}

allArgs := append(append([]string{path}, defaultArgs(config.IsCpp)...), config.Args...)
cArgs := make([]*c.Char, len(allArgs))
for i, arg := range allArgs {
cArgs[i] = c.AllocaCStr(arg)
Expand All @@ -41,32 +51,38 @@ func CreateTranslationUnit(config *Config) (*clang.Index, *clang.TranslationUnit
}

var unit *clang.TranslationUnit

var code ErrorCode
if config.Temp {
content := c.AllocaCStr(config.File)
tempFile := &clang.UnsavedFile{
Filename: c.Str(TEMP_FILE),
Contents: content,
Length: c.Ulong(c.Strlen(content)),
}

unit = index.ParseTranslationUnit(
code = ParseTranslationUnit2FullArgv(index,
tempFile.Filename,
unsafe.SliceData(cArgs), c.Int(len(cArgs)),
tempFile, 1,
clang.DetailedPreprocessingRecord,
&unit,
)

} else {

cFile := c.AllocaCStr(config.File)
unit = index.ParseTranslationUnit(
code = ParseTranslationUnit2FullArgv(index,
cFile,
unsafe.SliceData(cArgs), c.Int(len(cArgs)),
nil, 0,
clang.DetailedPreprocessingRecord,
&unit,
)
}

if code != Error_Success {
c.Printf(c.Str("code: %d\n"), code)
return nil, nil, errors.New("failed to parse translation unit")
}

if unit == nil {
return nil, nil, errors.New("failed to parse translation unit")
}
Expand Down Expand Up @@ -114,3 +130,43 @@ func defaultArgs(isCpp bool) []string {
}
return args
}

// CINDEX_LINKAGE CXTranslationUnit clang_parseTranslationUnit(CXIndex CIdx, const char *source_filename,
// const char *const *command_line_args,
// int num_command_line_args,
// struct CXUnsavedFile *unsaved_files,
// unsigned num_unsaved_files, unsigned options);

/**
* Same as \c clang_parseTranslationUnit2, but returns
* the \c CXTranslationUnit instead of an error code. In case of an error this
* routine returns a \c NULL \c CXTranslationUnit, without further detailed
* error codes.
*/
//go:linkname ParseTranslationUnit C.clang_parseTranslationUnit
func ParseTranslationUnit(index *clang.Index, sourceFilename *c.Char, commandLineArgs **c.Char, numCommandLineArgs c.Int,
unsavedFiles *clang.UnsavedFile, numUnsavedFiles c.Uint, options c.Uint) *clang.TranslationUnit

/**
* Same as clang_parseTranslationUnit2 but requires a full command line
* for \c command_line_args including argv[0]. This is useful if the standard
* library paths are relative to the binary.
*/
// CINDEX_LINKAGE enum CXErrorCode
// clang_parseTranslationUnit2FullArgv(CXIndex CIdx, const char *source_filename, const char *const *command_line_args,
// int num_command_line_args, struct CXUnsavedFile *unsaved_files,
// unsigned num_unsaved_files, unsigned options, CXTranslationUnit *out_TU);

type ErrorCode int

const (
Error_Success = 0
Error_Failure = 1
Error_Crashed = 2
Error_InvalidArguments = 3
Error_ASTReadError = 4
)

//go:linkname ParseTranslationUnit2FullArgv C.clang_parseTranslationUnit2FullArgv
func ParseTranslationUnit2FullArgv(index *clang.Index, sourceFilename *c.Char, commandLineArgs **c.Char, numCommandLineArgs c.Int,
unsavedFiles *clang.UnsavedFile, numUnsavedFiles c.Uint, options c.Uint, out_TU **clang.TranslationUnit) ErrorCode
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