86 lines
1.8 KiB
Go
86 lines
1.8 KiB
Go
package clangutils
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import (
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"errors"
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"unsafe"
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"github.com/goplus/llgo/c"
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"github.com/goplus/llgo/c/clang"
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)
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type Config struct {
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File string
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Temp bool
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Args []string
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IsCpp bool
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Index *clang.Index
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}
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func CreateTranslationUnit(config *Config) (*clang.Index, *clang.TranslationUnit, error) {
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// default use the c/c++ standard of clang; c:gnu17 c++:gnu++17
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// https://clang.llvm.org/docs/CommandGuide/clang.html
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defaultArgs := []string{"-x", "c"}
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if config.IsCpp {
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defaultArgs = []string{"-x", "c++"}
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}
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allArgs := append(defaultArgs, config.Args...)
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cArgs := make([]*c.Char, len(allArgs))
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for i, arg := range allArgs {
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cArgs[i] = c.AllocaCStr(arg)
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}
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var index *clang.Index
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if config.Index != nil {
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index = config.Index
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} else {
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index = clang.CreateIndex(0, 0)
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}
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var unit *clang.TranslationUnit
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if config.Temp {
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content := c.AllocaCStr(config.File)
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tempFile := &clang.UnsavedFile{
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Filename: c.Str("temp.h"),
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Contents: content,
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Length: c.Ulong(c.Strlen(content)),
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}
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unit = index.ParseTranslationUnit(
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tempFile.Filename,
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unsafe.SliceData(cArgs), c.Int(len(cArgs)),
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tempFile, 1,
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clang.DetailedPreprocessingRecord,
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)
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} else {
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cFile := c.AllocaCStr(config.File)
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unit = index.ParseTranslationUnit(
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cFile,
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unsafe.SliceData(cArgs), c.Int(len(cArgs)),
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nil, 0,
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clang.DetailedPreprocessingRecord,
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)
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}
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if unit == nil {
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return nil, nil, errors.New("failed to parse translation unit")
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}
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return index, unit, nil
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}
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// Traverse up the semantic parents
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func BuildScopingParts(cursor clang.Cursor) []string {
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var parts []string
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for cursor.IsNull() != 1 && cursor.Kind != clang.CursorTranslationUnit {
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name := cursor.String()
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qualified := c.GoString(name.CStr())
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parts = append([]string{qualified}, parts...)
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cursor = cursor.SemanticParent()
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name.Dispose()
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}
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return parts
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}
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