forked from go-clang/gen
/
function.go
135 lines (106 loc) · 2.55 KB
/
function.go
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package gen
import (
"strings"
"github.com/go-clang/bootstrap/clang"
)
// Function represents a generation function
type Function struct {
IncludeFiles includeFiles
Name string
CName string
Comment string
Parameters []FunctionParameter
ReturnType Type
Receiver Receiver
Member *FunctionParameter
}
// FunctionParameter represents a generation function parameter
type FunctionParameter struct {
Name string
CName string
Type Type
}
func newFunction(name, cname, comment, member string, typ Type) *Function {
functionName := UpperFirstCharacter(name)
receiverType := TrimLanguagePrefix(cname)
receiverName := commonReceiverName(receiverType)
f := &Function{
Name: functionName,
CName: cname,
Comment: comment,
IncludeFiles: newIncludeFiles(),
Parameters: []FunctionParameter{ // TODO this might not be needed if the receiver code is refactored https://github.com/go-clang/gen/issues/52
FunctionParameter{
Name: receiverName,
CName: cname,
Type: Type{
GoName: receiverType,
},
},
},
ReturnType: typ,
Receiver: Receiver{
Name: receiverName,
Type: Type{
GoName: receiverType,
},
},
Member: &FunctionParameter{
Name: member,
Type: typ,
},
}
return f
}
func handleFunctionCursor(cursor clang.Cursor) *Function {
fname := cursor.Spelling()
f := Function{
Name: fname,
CName: fname,
Comment: CleanDoxygenComment(cursor.RawCommentText()),
IncludeFiles: newIncludeFiles(),
Parameters: []FunctionParameter{},
}
typ, err := typeFromClangType(cursor.ResultType())
if err != nil {
panic(err)
}
f.ReturnType = typ
numParam := int(cursor.NumArguments())
for i := 0; i < numParam; i++ {
param := cursor.Argument(uint16(i))
p := FunctionParameter{
CName: param.DisplayName(),
}
typ, err := typeFromClangType(param.Type())
if err != nil {
panic(err)
}
p.Type = typ
p.Name = p.CName
if p.Name == "" {
p.Name = commonReceiverName(p.Type.GoName)
} else {
pns := strings.Split(p.Name, "_")
for i := range pns {
pns[i] = UpperFirstCharacter(pns[i])
}
p.Name = LowerFirstCharacter(strings.Join(pns, ""))
}
if r := ReplaceGoKeywords(p.Name); r != "" {
p.Name = r
}
f.Parameters = append(f.Parameters, p)
}
return &f
}
func (f *Function) generate() string {
fa := newASTFunc(f)
fa.generate()
fStr := generateFunctionString(fa)
// TODO find out how to position the comment correctly and do this using the AST https://github.com/go-clang/gen/issues/54
if f.Comment != "" {
fStr = f.Comment + "\n" + fStr
}
return fStr
}