miqt/cmd/genbindings/transformoptional.go

56 lines
1.4 KiB
Go

package main
import (
"fmt"
)
// astTransformOptional expands all methods with optional parameters into
// explicit additional versions.
func astTransformOptional(parsed *CppParsedHeader) {
for i, c := range parsed.Classes {
anyChange := false
for j, m := range c.Methods {
// Search for first optional parameter (they all must be last)
optionalStart := -1
for k, p := range m.Parameters {
if p.Optional {
optionalStart = k
break
}
}
if optionalStart == -1 {
continue // There were no optional parameters
}
anyChange = true
// Add method copies
for x := optionalStart; x < len(m.Parameters); x++ {
dupMethod := CppMethod{
MethodName: m.MethodName + fmt.Sprintf("%d", x+1),
OverrideMethodName: m.MethodName,
ReturnType: m.ReturnType,
Parameters: nil,
IsSignal: m.IsSignal,
IsStatic: m.IsStatic,
HasHiddenParams: (x != len(m.Parameters)-1),
}
dupMethod.Parameters = append(dupMethod.Parameters, m.Parameters[0:x+1]...)
c.Methods = append(c.Methods, dupMethod) // TODO can we insert them next, instead of at the end?
}
// Truncate the original method's parameters to only the
// mandatory ones
m.Parameters = m.Parameters[0:optionalStart]
m.HasHiddenParams = true
c.Methods[j] = m
}
if anyChange {
parsed.Classes[i] = c
}
}
}