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sqlc-gen-python/internal/imports.go at v1.0.0 · simo7/sqlc-gen-python · GitHub
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package
python
import
(
"fmt"
"sort"
"strings"
)
type
importSpec
struct
{
Module
string
Name
string
Alias
string
}
func
(
i
importSpec
)
String
()
string
{
if
i
.
Alias
!=
""
{
if
i
.
Name
==
""
{
return
fmt
.
Sprintf
(
"import %s as %s"
,
i
.
Module
,
i
.
Alias
)
}
return
fmt
.
Sprintf
(
"from %s import %s as %s"
,
i
.
Module
,
i
.
Name
,
i
.
Alias
)
}
if
i
.
Name
==
""
{
return
"import "
+
i
.
Module
}
return
fmt
.
Sprintf
(
"from %s import %s"
,
i
.
Module
,
i
.
Name
)
}
type
importer
struct
{
Models
[]
Struct
Queries
[]
Query
Enums
[]
Enum
C
Config
}
func
structUses
(
name
string
,
s
Struct
)
bool
{
for
_
,
f
:=
range
s
.
Fields
{
if
name
==
"typing.List"
&&
f
.
Type
.
IsArray
{
return
true
}
if
name
==
"typing.Optional"
&&
f
.
Type
.
IsNull
{
return
true
}
if
f
.
Type
.
InnerType
==
name
{
return
true
}
}
return
false
}
func
queryValueUses
(
name
string
,
qv
QueryValue
)
bool
{
if
!
qv
.
isEmpty
() {
if
name
==
"typing.List"
&&
qv
.
Typ
.
IsArray
{
return
true
}
if
name
==
"typing.Optional"
&&
qv
.
Typ
.
IsNull
{
return
true
}
if
qv
.
IsStruct
()
&&
qv
.
EmitStruct
() {
if
structUses
(
name
,
*
qv
.
Struct
) {
return
true
}
}
else
{
if
qv
.
Typ
.
InnerType
==
name
{
return
true
}
}
}
return
false
}
func
(
i
*
importer
)
Imports
(
fileName
string
) []
string
{
if
fileName
==
"models.py"
{
return
i
.
modelImports
()
}
return
i
.
queryImports
(
fileName
)
}
func
(
i
*
importer
)
modelImportSpecs
() (
map
[
string
]
importSpec
,
map
[
string
]
importSpec
) {
modelUses
:=
func
(
name
string
)
bool
{
for
_
,
model
:=
range
i
.
Models
{
if
structUses
(
name
,
model
) {
return
true
}
}
return
false
}
std
:=
stdImports
(
modelUses
)
if
i
.
C
.
EmitPydanticModels
{
std
[
"pydantic"
]
=
importSpec
{
Module
:
"pydantic"
}
}
else
{
std
[
"dataclasses"
]
=
importSpec
{
Module
:
"dataclasses"
}
}
if
len
(
i
.
Enums
)
>
0
{
std
[
"enum"
]
=
importSpec
{
Module
:
"enum"
}
}
pkg
:=
make
(
map
[
string
]
importSpec
)
return
std
,
pkg
}
func
(
i
*
importer
)
modelImports
() []
string
{
std
,
pkg
:=
i
.
modelImportSpecs
()
importLines
:=
[]
string
{
buildImportBlock
(
std
),
""
,
buildImportBlock
(
pkg
),
}
return
importLines
}
func
(
i
*
importer
)
queryImportSpecs
(
fileName
string
) (
map
[
string
]
importSpec
,
map
[
string
]
importSpec
) {
queryUses
:=
func
(
name
string
)
bool
{
for
_
,
q
:=
range
i
.
Queries
{
if
q
.
SourceName
!=
fileName
{
continue
}
if
queryValueUses
(
name
,
q
.
Ret
) {
return
true
}
for
_
,
arg
:=
range
q
.
Args
{
if
queryValueUses
(
name
,
arg
) {
return
true
}
}
}
return
false
}
std
:=
stdImports
(
queryUses
)
pkg
:=
make
(
map
[
string
]
importSpec
)
pkg
[
"asyncpg"
]
=
importSpec
{
Module
:
"asyncpg"
}
queryValueModelImports
:=
func
(
qv
QueryValue
) {
if
qv
.
IsStruct
()
&&
qv
.
EmitStruct
() {
if
i
.
C
.
EmitPydanticModels
{
std
[
"pydantic"
]
=
importSpec
{
Module
:
"pydantic"
}
}
else
{
std
[
"dataclasses"
]
=
importSpec
{
Module
:
"dataclasses"
}
}
}
}
for
_
,
q
:=
range
i
.
Queries
{
if
q
.
SourceName
!=
fileName
{
continue
}
if
q
.
Cmd
==
":one"
{
std
[
"typing.Optional"
]
=
importSpec
{
Module
:
"typing"
,
Name
:
"Optional"
}
}
if
q
.
Cmd
==
":many"
{
std
[
"typing.AsyncIterator"
]
=
importSpec
{
Module
:
"typing"
,
Name
:
"AsyncIterator"
}
}
queryValueModelImports
(
q
.
Ret
)
for
_
,
qv
:=
range
q
.
Args
{
queryValueModelImports
(
qv
)
}
}
return
std
,
pkg
}
func
(
i
*
importer
)
queryImports
(
fileName
string
) []
string
{
std
,
pkg
:=
i
.
queryImportSpecs
(
fileName
)
modelImportStr
:=
fmt
.
Sprintf
(
"from %s import models"
,
i
.
C
.
Package
)
importLines
:=
[]
string
{
buildImportBlock
(
std
),
""
,
buildImportBlock
(
pkg
),
""
,
modelImportStr
,
}
return
importLines
}
type
importFromSpec
struct
{
Module
string
Names
[]
string
Alias
string
}
func
buildImportBlock2
(
pkgs
map
[
string
]
importSpec
) []
importFromSpec
{
pkgImports
:=
make
([]
importFromSpec
,
0
)
fromImports
:=
make
(
map
[
string
][]
string
)
for
_
,
is
:=
range
pkgs
{
if
is
.
Name
==
""
||
is
.
Alias
!=
""
{
pkgImports
=
append
(
pkgImports
,
importFromSpec
{
Module
:
is
.
Module
,
Names
: []
string
{
is
.
Name
},
Alias
:
is
.
Alias
,
})
}
else
{
names
,
ok
:=
fromImports
[
is
.
Module
]
if
!
ok
{
names
=
make
([]
string
,
0
,
1
)
}
names
=
append
(
names
,
is
.
Name
)
fromImports
[
is
.
Module
]
=
names
}
}
for
modName
,
names
:=
range
fromImports
{
sort
.
Strings
(
names
)
pkgImports
=
append
(
pkgImports
,
importFromSpec
{
Module
:
modName
,
Names
:
names
,
})
}
sort
.
Slice
(
pkgImports
,
func
(
i
,
j
int
)
bool
{
return
pkgImports
[
i
].
Module
<
pkgImports
[
j
].
Module
||
pkgImports
[
i
].
Names
[
0
]
<
pkgImports
[
j
].
Names
[
0
]
})
return
pkgImports
}
func
buildImportBlock
(
pkgs
map
[
string
]
importSpec
)
string
{
pkgImports
:=
make
([]
importSpec
,
0
)
fromImports
:=
make
(
map
[
string
][]
string
)
for
_
,
is
:=
range
pkgs
{
if
is
.
Name
==
""
||
is
.
Alias
!=
""
{
pkgImports
=
append
(
pkgImports
,
is
)
}
else
{
names
,
ok
:=
fromImports
[
is
.
Module
]
if
!
ok
{
names
=
make
([]
string
,
0
,
1
)
}
names
=
append
(
names
,
is
.
Name
)
fromImports
[
is
.
Module
]
=
names
}
}
importStrings
:=
make
([]
string
,
0
,
len
(
pkgImports
)
+
len
(
fromImports
))
for
_
,
is
:=
range
pkgImports
{
importStrings
=
append
(
importStrings
,
is
.
String
())
}
for
modName
,
names
:=
range
fromImports
{
sort
.
Strings
(
names
)
nameString
:=
strings
.
Join
(
names
,
", "
)
importStrings
=
append
(
importStrings
,
fmt
.
Sprintf
(
"from %s import %s"
,
modName
,
nameString
))
}
sort
.
Strings
(
importStrings
)
return
strings
.
Join
(
importStrings
,
"
\n
"
)
}
func
stdImports
(
uses
func
(
name
string
)
bool
)
map
[
string
]
importSpec
{
std
:=
make
(
map
[
string
]
importSpec
)
if
uses
(
"decimal.Decimal"
) {
std
[
"decimal"
]
=
importSpec
{
Module
:
"decimal"
}
}
if
uses
(
"datetime.date"
)
||
uses
(
"datetime.time"
)
||
uses
(
"datetime.datetime"
)
||
uses
(
"datetime.timedelta"
) {
std
[
"datetime"
]
=
importSpec
{
Module
:
"datetime"
}
}
if
uses
(
"uuid.UUID"
) {
std
[
"uuid"
]
=
importSpec
{
Module
:
"uuid"
}
}
if
uses
(
"typing.List"
) {
std
[
"typing.List"
]
=
importSpec
{
Module
:
"typing"
,
Name
:
"List"
}
}
if
uses
(
"typing.Optional"
) {
std
[
"typing.Optional"
]
=
importSpec
{
Module
:
"typing"
,
Name
:
"Optional"
}
}
if
uses
(
"Any"
) {
std
[
"typing.Any"
]
=
importSpec
{
Module
:
"typing"
,
Name
:
"Any"
}
}
return
std
}
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