mirror of https://github.com/mappu/miqt.git
90 lines
2.0 KiB
Go
90 lines
2.0 KiB
Go
package main
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import (
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"fmt"
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)
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// astTransformOptional expands all methods with optional parameters into
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// explicit additional versions.
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func astTransformOptional(parsed *CppParsedHeader) {
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for i, c := range parsed.Classes {
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anyChange := false
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// Methods
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// ```````
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for j, m := range c.Methods {
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// Search for first optional parameter (they all must be last)
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optionalStart := -1
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for k, p := range m.Parameters {
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if p.Optional {
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optionalStart = k
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break
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}
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}
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if optionalStart == -1 {
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continue // There were no optional parameters
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}
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anyChange = true
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// Add method copies
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for x := optionalStart; x < len(m.Parameters); x++ {
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dupMethod := m // copy
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dupMethod.MethodName = m.MethodName + fmt.Sprintf("%d", x+1)
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dupMethod.OverrideMethodName = m.MethodName
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dupMethod.Parameters = m.Parameters[0 : x+1]
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dupMethod.HiddenParams = m.Parameters[x+1:]
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c.Methods = append(c.Methods, dupMethod) // TODO can we insert them next, instead of at the end?
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}
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// Truncate the original method's parameters to only the
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// mandatory ones
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m.HiddenParams = m.Parameters[optionalStart:]
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m.Parameters = m.Parameters[0:optionalStart]
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c.Methods[j] = m
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}
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// Constructors
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// ````````````
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for j, m := range c.Ctors {
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// Search for first optional parameter (they all must be last)
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optionalStart := -1
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for k, p := range m.Parameters {
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if p.Optional {
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optionalStart = k
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break
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}
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}
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if optionalStart == -1 {
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continue // There were no optional parameters
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}
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anyChange = true
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// Add ctor copies
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for x := optionalStart; x < len(m.Parameters); x++ {
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dupCtor := m // copy
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dupCtor.Parameters = m.Parameters[0 : x+1]
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dupCtor.HiddenParams = m.Parameters[x+1:]
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c.Ctors = append(c.Ctors, dupCtor)
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}
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// Truncate the original ctor's parameters to only the
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// mandatory ones
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m.HiddenParams = m.Parameters[optionalStart:]
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m.Parameters = m.Parameters[0:optionalStart]
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c.Ctors[j] = m
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}
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if anyChange {
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parsed.Classes[i] = c
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}
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}
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}
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