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use alloc::vec::Vec; use super::invoke::{Invoke, Identity}; use crate::elements; pub struct ValueTypeBuilder<F=Identity> { callback: F, } impl<F> ValueTypeBuilder<F> where F: Invoke<elements::ValueType> { pub fn with_callback(callback: F) -> Self { ValueTypeBuilder { callback: callback } } pub fn i32(self) -> F::Result { self.callback.invoke(elements::ValueType::I32) } pub fn i64(self) -> F::Result { self.callback.invoke(elements::ValueType::I64) } pub fn f32(self) -> F::Result { self.callback.invoke(elements::ValueType::F32) } pub fn f64(self) -> F::Result { self.callback.invoke(elements::ValueType::F64) } } pub struct OptionalValueTypeBuilder<F=Identity> { callback: F, } impl<F> OptionalValueTypeBuilder<F> where F: Invoke<Option<elements::ValueType>> { pub fn with_callback(callback: F) -> Self { OptionalValueTypeBuilder { callback: callback } } pub fn i32(self) -> F::Result { self.callback.invoke(Some(elements::ValueType::I32)) } pub fn i64(self) -> F::Result { self.callback.invoke(Some(elements::ValueType::I64)) } pub fn f32(self) -> F::Result { self.callback.invoke(Some(elements::ValueType::F32)) } pub fn f64(self) -> F::Result { self.callback.invoke(Some(elements::ValueType::F64)) } } pub struct ValueTypesBuilder<F=Identity> { callback: F, value_types: Vec<elements::ValueType>, } impl<F> ValueTypesBuilder<F> where F: Invoke<Vec<elements::ValueType>> { pub fn with_callback(callback: F) -> Self { ValueTypesBuilder { callback: callback, value_types: Vec::new(), } } pub fn i32(mut self) -> Self { self.value_types.push(elements::ValueType::I32); self } pub fn i64(mut self) -> Self { self.value_types.push(elements::ValueType::I64); self } pub fn f32(mut self) -> Self { self.value_types.push(elements::ValueType::F32); self } pub fn f64(mut self) -> Self { self.value_types.push(elements::ValueType::F64); self } pub fn build(self) -> F::Result { self.callback.invoke(self.value_types) } }