rsbind 0.6.0

Provide tools to bind rust trait with other language and export library artifact directly. Invoke rust functions just like you write it in native language.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170

use crate::ast::contract::parser::ParseContext;
use std::convert::From;

///
/// Ast types are bridges between rust origin types and C/Swift/Java types.
///
#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
pub(crate) enum AstBaseType {
    Void,
    Byte(String),
    Short(String),
    Int(String),
    Long(String),
    Float(String),
    Double(String),
    Boolean,
    String,
    Callback(CustomType),
    Struct(CustomType),
}

impl<'a> AstBaseType {
    pub fn new(ident: &'a str, sub: &'a str, ctx: &ParseContext) -> Self {
        let origin = ident.to_string();
        match ident {
            "u8" | "i8" => AstBaseType::Byte(origin),
            "u16" | "i16" => AstBaseType::Short(origin),
            "u32" | "i32" | "isize" | "usize" => AstBaseType::Int(origin),
            "f32" => AstBaseType::Float(origin),
            "f64" => AstBaseType::Double(origin),
            "u64" | "i64" => AstBaseType::Long(origin),
            "str" | "String" => AstBaseType::String,
            "bool" => AstBaseType::Boolean,
            // Right now, all callbacks are wrapped with Box
            "Box" => AstBaseType::Callback(CustomType {
                mod_name: ctx.mod_name.clone(),
                origin: sub.to_string(),
            }),
            // If the ident can't recognized, we assume it is a struct,
            // but if we add enum support, it should be changed.
            _ => AstBaseType::Struct(CustomType {
                mod_name: ctx.mod_name.clone(),
                origin: sub.to_string(),
            }),
        }
    }

    pub fn origin(&self) -> String {
        match &self {
            AstBaseType::Void => "".to_owned(),
            AstBaseType::Byte(origin) => origin.clone(),
            AstBaseType::Int(origin) => origin.clone(),
            AstBaseType::Long(origin) => origin.clone(),
            AstBaseType::Float(origin) => origin.clone(),
            AstBaseType::Double(origin) => origin.clone(),
            AstBaseType::Boolean => "bool".to_owned(),
            AstBaseType::String => "String".to_owned(),
            AstBaseType::Callback(origin) => origin.origin.clone(),
            AstBaseType::Struct(origin) => origin.origin.clone(),
            AstBaseType::Short(origin) => origin.clone(),
        }
    }
}

#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
pub(crate) struct CustomType {
    pub(crate) mod_name: String,
    pub(crate) origin: String,
}

#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
pub(crate) enum AstType {
    Void,
    Byte(String),
    Int(String),
    Short(String),
    Long(String),
    Float(String),
    Double(String),
    Boolean,
    String,
    Vec(AstBaseType),
    Callback(CustomType),
    Struct(CustomType),
}

///
/// used for converting rust types to ast supported type.
///
impl<'a> AstType {
    pub fn new(ident: &'a str, sub: &'a str, ctx: &ParseContext) -> Self {
        let origin = ident.to_string();
        match ident {
            "u8" | "i8" => AstType::Byte(origin),
            "u16" | "i16" => AstType::Short(origin),
            "u32" | "i32" | "isize" | "usize" => AstType::Int(origin),
            "f32" => AstType::Float(origin),
            "f64" => AstType::Double(origin),
            "u64" | "i64" => AstType::Long(origin),
            "str" | "String" => AstType::String,
            "bool" => AstType::Boolean,
            // Right now, all callbacks are wrapped with Box
            "Box" => AstType::Callback(CustomType {
                mod_name: ctx.mod_name.clone(),
                origin: sub.to_string(),
            }),
            // If the ident can't recognized, we assume it is a struct,
            // but if we add enum support, it should be changed.
            _ => AstType::Struct(CustomType {
                mod_name: ctx.mod_name.clone(),
                origin: sub.to_string(),
            }),
        }
    }

    pub fn origin(&self) -> String {
        match &self {
            AstType::Void => "".to_owned(),
            AstType::Byte(origin) => origin.clone(),
            AstType::Short(origin) => origin.clone(),
            AstType::Int(origin) => origin.clone(),
            AstType::Long(origin) => origin.clone(),
            AstType::Float(origin) => origin.clone(),
            AstType::Double(origin) => origin.clone(),
            AstType::Boolean => "bool".to_owned(),
            AstType::String => "String".to_owned(),
            AstType::Vec(base) => format!("Vec<{}>", &base.origin()),
            AstType::Callback(origin) => origin.origin.clone(),
            AstType::Struct(origin) => origin.origin.clone(),
        }
    }
}

impl From<AstBaseType> for AstType {
    fn from(base_ty: AstBaseType) -> Self {
        match base_ty {
            AstBaseType::Void => AstType::Void,
            AstBaseType::Byte(origin) => AstType::Byte(origin),
            AstBaseType::Short(origin) => AstType::Short(origin),
            AstBaseType::Int(origin) => AstType::Int(origin),
            AstBaseType::Long(origin) => AstType::Long(origin),
            AstBaseType::Float(origin) => AstType::Float(origin),
            AstBaseType::Double(origin) => AstType::Double(origin),
            AstBaseType::Boolean => AstType::Boolean,
            AstBaseType::String => AstType::String,
            AstBaseType::Callback(origin) => AstType::Callback(origin),
            AstBaseType::Struct(origin) => AstType::Struct(origin),
        }
    }
}

impl AstType {
    pub(crate) fn to_java_sig(&self) -> String {
        match self {
            AstType::Void => "V".to_owned(),
            AstType::Byte(_) => "B".to_owned(),
            AstType::Short(_) => "S".to_owned(),
            AstType::Int(_) => "I".to_owned(),
            AstType::Long(_) => "J".to_owned(),
            AstType::Float(_) => "F".to_owned(),
            AstType::Double(_) => "D".to_owned(),
            AstType::Boolean => "I".to_owned(),
            AstType::String => "Ljava/lang/String;".to_owned(),
            AstType::Callback(_) => "Ljava/lang/String;".to_owned(),
            AstType::Struct(_) => "Ljava/lang/String;".to_owned(),
            AstType::Vec(AstBaseType::Byte(_)) => "[B".to_owned(),
            AstType::Vec(_) => "Ljava/lang/String;".to_owned(),
        }
    }
}