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pub use golang_struct_tag;
pub use golang_type_name_core::{self, TypeName, TypeNameParseError};
use std::str::{self, FromStr};
use golang_parser::{tree_sitter::Node, Parser};
pub mod array_type;
pub mod channel_type;
pub mod function_type;
pub mod interface_type;
pub mod map_type;
pub mod parenthesized_type;
pub mod pointer_type;
pub mod slice_type;
pub mod struct_type;
pub use self::array_type::{ArrayLength, ArrayType, ArrayTypeParseError};
pub use self::channel_type::{ChannelType, ChannelTypeParseError};
pub use self::function_type::{FunctionType, FunctionTypeParseError};
pub use self::interface_type::{InterfaceType, InterfaceTypeParseError};
pub use self::map_type::{MapType, MapTypeParseError};
pub use self::parenthesized_type::{ParenthesizedType, ParenthesizedTypeParseError};
pub use self::pointer_type::{PointerType, PointerTypeParseError};
pub use self::slice_type::{SliceType, SliceTypeParseError};
pub use self::struct_type::{
EmbeddedField, FieldDecl, StructField, StructType, StructTypeParseError,
};
#[derive(PartialEq, Eq, Debug, Clone)]
pub enum Type {
TypeName(TypeName),
ArrayType(ArrayType),
StructType(StructType),
PointerType(PointerType),
FunctionType(FunctionType),
InterfaceType(InterfaceType),
SliceType(SliceType),
MapType(MapType),
ChannelType(ChannelType),
ParenthesizedType(ParenthesizedType),
}
#[derive(thiserror::Error, Debug)]
pub enum TypeParseError {
#[error("GolangParserError {0:?}")]
GolangParserError(#[from] golang_parser::Error),
#[error("NodeMissing {0}")]
NodeMissing(String),
#[error("NodeKindUnknown {0}")]
NodeKindUnknown(String),
#[error("TypeNameParseError {0:?}")]
TypeNameParseError(#[from] TypeNameParseError),
#[error("ArrayTypeParseError {0:?}")]
ArrayTypeParseError(#[from] ArrayTypeParseError),
#[error("StructTypeParseError {0:?}")]
StructTypeParseError(#[from] StructTypeParseError),
#[error("PointerTypeParseError {0:?}")]
PointerTypeParseError(#[from] PointerTypeParseError),
#[error("FunctionTypeParseError {0:?}")]
FunctionTypeParseError(#[from] FunctionTypeParseError),
#[error("InterfaceTypeParseError {0:?}")]
InterfaceTypeParseError(#[from] InterfaceTypeParseError),
#[error("SliceTypeParseError {0:?}")]
SliceTypeParseError(#[from] SliceTypeParseError),
#[error("MapTypeParseError {0:?}")]
MapTypeParseError(#[from] MapTypeParseError),
#[error("ChannelTypeParseError {0:?}")]
ChannelTypeParseError(#[from] ChannelTypeParseError),
#[error("ParenthesizedTypeParseError {0:?}")]
ParenthesizedTypeParseError(#[from] ParenthesizedTypeParseError),
}
impl FromStr for Type {
type Err = TypeParseError;
fn from_str(s: &str) -> Result<Self, Self::Err> {
let parser = Parser::new(format!("var _ {}", s))?;
let source = parser.get_source();
let root_node = parser.get_root_node();
let mut cursor = root_node.walk();
let node_var_declaration = root_node
.named_children(&mut cursor)
.find(|node| node.kind() == "var_declaration")
.ok_or_else(|| TypeParseError::NodeMissing("var_declaration".to_string()))?;
let node_var_spec = node_var_declaration
.named_children(&mut cursor)
.find(|node| node.kind() == "var_spec")
.ok_or_else(|| TypeParseError::NodeMissing("var_spec".to_string()))?;
let _ = node_var_spec
.named_child(0)
.ok_or_else(|| TypeParseError::NodeMissing("var_spec name".to_string()))?;
let node_var_spec_type = node_var_spec
.named_child(1)
.ok_or_else(|| TypeParseError::NodeMissing("var_spec type".to_string()))?;
Self::from_node(node_var_spec_type, source)
}
}
impl Type {
pub fn from_node(node: Node, source: &[u8]) -> Result<Self, TypeParseError> {
match node.kind() {
"qualified_type" => TypeName::from_qualified_type_node(node, source)
.map(Self::TypeName)
.map_err(Into::into),
"type_identifier" => TypeName::from_type_identifier_node(node, source)
.map(Self::TypeName)
.map_err(Into::into),
"array_type" => ArrayType::from_array_type_node(node, source).map(Self::ArrayType),
"struct_type" => StructType::from_struct_type_node(node, source).map(Self::StructType),
"pointer_type" => {
PointerType::from_pointer_type_node(node, source).map(Self::PointerType)
}
"function_type" => {
FunctionType::from_function_type_node(node, source).map(Self::FunctionType)
}
"interface_type" => {
InterfaceType::from_interface_type_node(node, source).map(Self::InterfaceType)
}
"slice_type" => SliceType::from_slice_type_node(node, source).map(Self::SliceType),
"map_type" => MapType::from_map_type_node(node, source).map(Self::MapType),
"channel_type" => {
ChannelType::from_channel_type_node(node, source).map(Self::ChannelType)
}
"parenthesized_type" => ParenthesizedType::from_parenthesized_type_node(node, source)
.map(Self::ParenthesizedType),
_ => Err(TypeParseError::NodeKindUnknown(node.kind().to_owned())),
}
}
}
#[cfg(feature = "enable-quote-to_tokens")]
mod enable_quote_to_tokens {
use super::Type;
use proc_macro2::TokenStream;
use quote::{quote, ToTokens, TokenStreamExt as _};
impl ToTokens for Type {
fn to_tokens(&self, tokens: &mut TokenStream) {
match self {
Self::TypeName(type_name) => tokens.append_all(quote!(#type_name)),
Self::ArrayType(array_type) => tokens.append_all(quote!(#array_type)),
Self::StructType(_) => {
let err = "impl ToTokens for StructType is unsupported";
tokens.append_all(quote!(compile_error!(#err)))
}
Self::PointerType(pointer_type) => tokens.append_all(quote!(#pointer_type)),
Self::FunctionType(_) => {
let err = "impl ToTokens for FunctionType is unsupported";
tokens.append_all(quote!(compile_error!(#err)))
}
Self::InterfaceType(_) => {
let err = "impl ToTokens for InterfaceType is unsupported";
tokens.append_all(quote!(compile_error!(#err)))
}
Self::SliceType(slice_type) => tokens.append_all(quote!(#slice_type)),
Self::MapType(map_type) => tokens.append_all(quote!(#map_type)),
Self::ChannelType(_) => {
let err = "impl ToTokens for ChannelType is unsupported";
tokens.append_all(quote!(compile_error!(#err)))
}
Self::ParenthesizedType(parenthesized_type) => {
tokens.append_all(quote!(#parenthesized_type))
}
}
}
}
}