-
Notifications
You must be signed in to change notification settings - Fork 22
/
generate.go
171 lines (149 loc) · 3.94 KB
/
generate.go
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
171
// Package gdextensionwrapper generates C code to wrap all of the gdextension
// methods to call functions on the gdextension_api_structs to work
// around the cgo C function pointer limitation.
package ffi
import (
"bytes"
_ "embed"
"os"
"path/filepath"
"text/template"
"github.com/godot-go/godot-go/cmd/gdextensionparser/clang"
"github.com/iancoleman/strcase"
)
var (
//go:embed ffi_wrapper.h.tmpl
ffiWrapperHeaderFileText string
//go:embed ffi_wrapper.c.tmpl
ffiWrapperSrcFileText string
//go:embed ffi_wrapper.go.tmpl
ffiWrapperGoFileText string
//go:embed ffi.go.tmpl
ffiFileText string
)
func Generate(projectPath string, ast clang.CHeaderFileAST) {
err := GenerateGDExtensionWrapperHeaderFile(projectPath, ast)
if err != nil {
panic(err)
}
err = GenerateGDExtensionWrapperSrcFile(projectPath, ast)
if err != nil {
panic(err)
}
err = GenerateGDExtensionWrapperGoFile(projectPath, ast)
if err != nil {
panic(err)
}
err = GenerateGDExtensionInterfaceGoFile(projectPath, ast)
if err != nil {
panic(err)
}
}
func GenerateGDExtensionWrapperHeaderFile(projectPath string, ast clang.CHeaderFileAST) error {
tmpl, err := template.New("ffi_wrapper.gen.h").
Funcs(template.FuncMap{
"snakeCase": strcase.ToSnake,
}).
Parse(ffiWrapperHeaderFileText)
if err != nil {
return err
}
var b bytes.Buffer
err = tmpl.Execute(&b, ast)
if err != nil {
return err
}
filename := filepath.Join(projectPath, "pkg", "ffi", "ffi_wrapper.gen.h")
f, err := os.Create(filename)
if err != nil {
return err
}
defer f.Close()
_, err = f.Write(b.Bytes())
if err != nil {
return err
}
return nil
}
func GenerateGDExtensionWrapperSrcFile(projectPath string, ast clang.CHeaderFileAST) error {
tmpl, err := template.New("ffi_wrapper.gen.c").
Funcs(template.FuncMap{
"snakeCase": strcase.ToSnake,
}).
Parse(ffiWrapperSrcFileText)
if err != nil {
return err
}
var b bytes.Buffer
err = tmpl.Execute(&b, ast)
if err != nil {
return err
}
headerFileName := filepath.Join(projectPath, "pkg", "ffi", "ffi_wrapper.gen.c")
f, err := os.Create(headerFileName)
f.Write(b.Bytes())
f.Close()
return nil
}
func GenerateGDExtensionWrapperGoFile(projectPath string, ast clang.CHeaderFileAST) error {
funcs := template.FuncMap{
"gdiVariableName": gdiVariableName,
"snakeCase": strcase.ToSnake,
"camelCase": strcase.ToCamel,
"goReturnType": goReturnType,
"goArgumentType": goArgumentType,
"goEnumValue": goEnumValue,
"add": add,
"cgoCastArgument": cgoCastArgument,
"cgoCastReturnType": cgoCastReturnType,
"cgoCleanUpArgument": cgoCleanUpArgument,
}
tmpl, err := template.New("ffi_wrapper.gen.go").
Funcs(funcs).
Parse(ffiWrapperGoFileText)
if err != nil {
return err
}
var b bytes.Buffer
err = tmpl.Execute(&b, ast)
if err != nil {
return err
}
headerFileName := filepath.Join(projectPath, "pkg", "ffi", "ffi_wrapper.gen.go")
f, err := os.Create(headerFileName)
f.Write(b.Bytes())
f.Close()
return nil
}
func GenerateGDExtensionInterfaceGoFile(projectPath string, ast clang.CHeaderFileAST) error {
funcs := template.FuncMap{
"gdiVariableName": gdiVariableName,
"snakeCase": strcase.ToSnake,
"camelCase": strcase.ToCamel,
"goReturnType": goReturnType,
"goArgumentType": goArgumentType,
"goEnumValue": goEnumValue,
"add": add,
"cgoCastArgument": cgoCastArgument,
"cgoCastReturnType": cgoCastReturnType,
"cgoCleanUpArgument": cgoCleanUpArgument,
"trimPrefix": trimPrefix,
"loadProcAddressName": loadProcAddressName,
}
tmpl, err := template.New("ffi.gen.go").
Funcs(funcs).
Parse(ffiFileText)
if err != nil {
return err
}
var b bytes.Buffer
err = tmpl.Execute(&b, ast)
if err != nil {
return err
}
headerFileName := filepath.Join(projectPath, "pkg", "ffi", "ffi.gen.go")
f, err := os.Create(headerFileName)
f.Write(b.Bytes())
f.Close()
return nil
}