/
gen_typedef.go
147 lines (135 loc) · 4.57 KB
/
gen_typedef.go
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package generator
import (
"fmt"
"io"
"path/filepath"
tl "github.com/astro-cn/c-for-go/translator"
)
func (gen *Generator) writeTypeTypedef(wr io.Writer, decl *tl.CDecl, seenNames map[string]bool) {
goSpec := gen.tr.TranslateSpec(decl.Spec)
goTypeName := gen.tr.TransformName(tl.TargetType, decl.Name)
if seenNames[string(goTypeName)] {
return
} else {
seenNames[string(goTypeName)] = true
}
fmt.Fprintf(wr, "// %s type as declared in %s\n", goTypeName,
filepath.ToSlash(gen.tr.SrcLocation(tl.TargetType, decl.Name, decl.Position)))
fmt.Fprintf(wr, "type %s %s", goTypeName, goSpec.UnderlyingString())
writeSpace(wr, 1)
}
func (gen *Generator) writeEnumTypedef(wr io.Writer, decl *tl.CDecl) {
cName, ok := getName(decl)
if !ok {
return
}
goName := gen.tr.TransformName(tl.TargetType, cName)
typeRef := gen.tr.TranslateSpec(decl.Spec).UnderlyingString()
if typeName := string(goName); typeName != typeRef {
fmt.Fprintf(wr, "// %s as declared in %s\n", goName,
filepath.ToSlash(gen.tr.SrcLocation(tl.TargetConst, cName, decl.Position)))
fmt.Fprintf(wr, "type %s %s", goName, typeRef)
writeSpace(wr, 1)
}
}
func (gen *Generator) writeFunctionTypedef(wr io.Writer, decl *tl.CDecl, seenNames map[string]bool) {
var returnRef string
funcSpec := decl.Spec.Copy().(*tl.CFunctionSpec)
funcSpec.Pointers = 0 // function pointers not supported here
if funcSpec.Return != nil {
// defaults to ref for the return values
ptrTip := tl.TipPtrRef
if ptrTipRx, ok := gen.tr.PtrTipRx(tl.TipScopeFunction, decl.Name); ok {
if tip := ptrTipRx.Self(); tip.IsValid() {
ptrTip = tip
}
}
typeTip := tl.TipTypeNamed
if typeTipRx, ok := gen.tr.TypeTipRx(tl.TipScopeFunction, decl.Name); ok {
if tip := typeTipRx.Self(); tip.IsValid() {
typeTip = tip
}
}
returnRef = gen.tr.TranslateSpec(funcSpec.Return, ptrTip, typeTip).String()
}
ptrTipRx, _ := gen.tr.PtrTipRx(tl.TipScopeFunction, decl.Name)
typeTipRx, _ := gen.tr.TypeTipRx(tl.TipScopeFunction, decl.Name)
goFuncName := gen.tr.TransformName(tl.TargetType, decl.Name)
if seenNames[string(goFuncName)] {
return
} else {
seenNames[string(goFuncName)] = true
}
goSpec := gen.tr.TranslateSpec(funcSpec, ptrTipRx.Self(), typeTipRx.Self())
goSpec.Raw = "" // not used in func typedef
fmt.Fprintf(wr, "// %s type as declared in %s\n", goFuncName,
filepath.ToSlash(gen.tr.SrcLocation(tl.TargetFunction, decl.Name, decl.Position)))
fmt.Fprintf(wr, "type %s %s", goFuncName, goSpec)
gen.writeFunctionParams(wr, decl.Name, decl.Spec)
if len(returnRef) > 0 {
fmt.Fprintf(wr, " %s", returnRef)
}
for _, helper := range gen.getCallbackHelpers(string(goFuncName), decl.Name, decl.Spec) {
gen.submitHelper(helper)
}
writeSpace(wr, 1)
}
func getName(decl *tl.CDecl) (string, bool) {
if len(decl.Name) > 0 {
return decl.Name, true
}
if base := decl.Spec.GetBase(); len(base) > 0 {
return base, true
}
return "", false
}
func (gen *Generator) writeStructTypedef(wr io.Writer, decl *tl.CDecl, raw bool, seenNames map[string]bool) {
cName, ok := getName(decl)
if !ok {
return
}
goName := gen.tr.TransformName(tl.TargetType, cName)
if seenNames[string(goName)] {
return
} else {
seenNames[string(goName)] = true
}
if raw || !decl.Spec.IsComplete() {
// opaque struct
fmt.Fprintf(wr, "// %s as declared in %s\n", goName,
filepath.ToSlash(gen.tr.SrcLocation(tl.TargetType, cName, decl.Position)))
fmt.Fprintf(wr, "type %s C.%s", goName, decl.Spec.CGoName())
writeSpace(wr, 1)
for _, helper := range gen.getRawStructHelpers(goName, cName, decl.Spec) {
gen.submitHelper(helper)
}
return
}
fmt.Fprintf(wr, "// %s as declared in %s\n", goName,
filepath.ToSlash(gen.tr.SrcLocation(tl.TargetType, cName, decl.Position)))
fmt.Fprintf(wr, "type %s struct {", goName)
writeSpace(wr, 1)
gen.submitHelper(cgoAllocMap)
gen.writeStructMembers(wr, cName, decl.Spec)
writeEndStruct(wr)
writeSpace(wr, 1)
for _, helper := range gen.getStructHelpers(goName, cName, decl.Spec) {
gen.submitHelper(helper)
}
}
func (gen *Generator) writeUnionTypedef(wr io.Writer, decl *tl.CDecl) {
cName, ok := getName(decl)
if !ok {
return
}
goName := gen.tr.TransformName(tl.TargetType, cName)
typeRef := gen.tr.TranslateSpec(decl.Spec).UnderlyingString()
if typeName := string(goName); typeName != typeRef {
fmt.Fprintf(wr, "// %s as declared in %s\n", goName,
filepath.ToSlash(gen.tr.SrcLocation(tl.TargetType, cName, decl.Position)))
fmt.Fprintf(wr, "const sizeof%s = unsafe.Sizeof(C.%s{})\n", goName, decl.Spec.CGoName())
fmt.Fprintf(wr, "type %s [sizeof%s]byte\n", goName, goName)
writeSpace(wr, 1)
return
}
}