commonMain.dsl.Delegates.kt Maven / Gradle / Ivy

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package org.openrndr.orsl.shadergenerator.dsl

import kotlin.reflect.KProperty

class OutputProperty(val generator: Generator, val type:String) {
    operator fun getValue(any: Any?, property: KProperty<*>): Symbol = symbol(property.name, type)

    operator fun setValue(any: Any?, property: KProperty<*>, value: Symbol) {
        activeGenerator().emit("${property.name} = ${value.name};")
    }
}
class VaryingInProperty(val generator: Generator, val type: String, val forceDefinition: Boolean = false) {
    operator fun provideDelegate(any: Any?, property: KProperty<*>) : VaryingInProperty {
        if (forceDefinition || !(property.name.startsWith("va_") || property.name.startsWith("vi_"))) {
            generator.emitPreamble(property.name, "in $type ${property.name};")
        }
        return this
    }
    operator fun getValue(any: Any?, property: KProperty<*>): Symbol = symbol(property.name, type)
}

class VaryingOutProperty(val generator: Generator, val type: String) {
    operator fun provideDelegate(any: Any?, property: KProperty<*>) : VaryingOutProperty {
        generator.emitPreamble(property.name, "out ${type} ${property.name};")
        return this
    }
    operator fun getValue(any: Any?, property: KProperty<*>): Symbol = symbol(property.name, type)

    operator fun setValue(any: Any?, property: KProperty<*>, value: Symbol) {
        activeGenerator().emit("${property.name} = ${value.name};")
    }
}

class FragmentOutputProperty(val generator: Generator, val type:String) {
    operator fun getValue(any: Any?, property: KProperty<*>): Symbol = symbol(property.name, type)

    operator fun setValue(any: Any?, property: KProperty<*>, value: Symbol) {
        activeGenerator().emit("${property.name} = ${value.name};")
    }
}

class ConstantProperty(val type: String) {
    operator fun getValue(any: Any?, property: KProperty<*>): Symbol = symbol(property.name, type)
}

class GlobalProperty(val generator: Generator, val type:String) {
    operator fun provideDelegate(any: Any?, property: KProperty<*>) : GlobalProperty {
        generator.emitPreamble(property.name, "${type} ${property.name};")
        return this
    }
    operator fun getValue(any: Any?, property: KProperty<*>): Symbol = symbol(property.name, type)

    operator fun setValue(any: Any?, property: KProperty<*>, value: Symbol) {
        activeGenerator().emit("${property.name} = ${value.name};")
    }
}


class VariableProperty(val generator: Generator, val type:String,
                          val initialValue: T?, val initialSymbol: Symbol?) {
    operator fun provideDelegate(any: Any?, property: KProperty<*>) : VariableProperty {
        if (initialValue == null && initialSymbol == null) {
            generator.emit("${type} ${property.name};")
        } else if (initialValue != null) {
            generator.emit("${type} ${property.name} = ${glsl(initialValue)};")
        } else if (initialSymbol != null) {
            generator.emit("${type} ${property.name} = ${initialSymbol.name};")
        }

        return this
    }
    operator fun getValue(any: Any?, property: KProperty<*>): Symbol = symbol(property.name, type)

    operator fun setValue(any: Any?, property: KProperty<*>, value: Symbol) {
        activeGenerator().emit("${property.name} = ${value.name};")
    }
}

class ArrayVariableProperty(val generator: Generator, val length: Int, val glslType:String) {
    private var declarationEmitted = false
    operator fun getValue(any: Any?, property: KProperty<*>): ArraySymbol {
        if (!declarationEmitted) {
            generator.emit("${glslType} ${property.name}[$length];")
            declarationEmitted = true
        }
        return object : ArraySymbol {
            override val name: String
                get() = property.name
            override val length: Int = [email protected]
            override val type = glslType
        }
    }
    operator fun setValue(any: Any?, property: KProperty<*>, value: ArraySymbol) {
        generator.emit("${property.name} = ${value.name};")
    }

    operator fun setValue(any: Any?, property: KProperty<*>, value: Symbol) {
        if (!declarationEmitted) {
            generator.emit("${glslType} ${property.name};")
            declarationEmitted = true
        }
        activeGenerator().emit("${property.name} = ${value.name};")
    }
}

class ValueProperty(val type:String) {
    operator fun getValue(any: Any?, property: KProperty<*>): Symbol = symbol(property.name, type)
}

class ArrayValueProperty(
    val generator: Generator, val length: Int, val type:String) {

    operator fun provideDelegate(any: Any?, property: KProperty<*>) : ArrayValueProperty {
        generator.emit("$type ${property.name}[$length];")
        return this
    }
    operator fun getValue(any: Any?, property: KProperty<*>): ArraySymbol {
        return object : ArraySymbol {
            override val name: String
                get() = property.name
            override val length: Int = [email protected]
            override val type = [email protected]
        }
    }
}