<lambda>null1 package com.android.codegen
2
3 import com.github.javaparser.JavaParser
4 import java.io.File
5
6
7 const val THIS_SCRIPT_LOCATION = ""
8 const val GENERATED_WARNING_PREFIX = "Code below generated by $CODEGEN_NAME"
9 const val GENERATED_END = "// End of generated code"
10 const val INDENT_SINGLE = " "
11
12 val PRIMITIVE_TYPES = listOf("byte", "short", "int", "long", "char", "float", "double", "boolean")
13 val BOXED_PRIMITIVE_TYPES = PRIMITIVE_TYPES.map { it.capitalize() } - "Int" + "Integer" - "Char" + "Character"
14
15 val BUILTIN_SPECIAL_PARCELLINGS = listOf("Pattern")
16
17 const val FLAG_BUILDER_PROTECTED_SETTERS = "--builder-protected-setters"
18 const val FLAG_NO_FULL_QUALIFIERS = "--no-full-qualifiers"
19
20 val JAVA_PARSER = JavaParser()
21
22 /** @see [FeatureFlag] */
23 val USAGE = """
24 Usage: $CODEGEN_NAME [--[PREFIX-]FEATURE...] JAVAFILE
25
26 Generates boilerplade parcelable/data class code at the bottom of JAVAFILE, based o fields' declaration in the given JAVAFILE's top-level class
27
28 FEATURE represents some generatable code, and can be among:
featurenull29 ${FeatureFlag.values().map { feature ->
30 " ${feature.kebabCase}" to feature.desc
31 }.columnize(" - ")}
32
33 And PREFIX can be:
34 <empty> - request to generate the feature
35 no - suppress generation of the feature
36 hidden - request to generate the feature with @hide
37
38 Extra options:
39 --help - view this help
40 --update-only - auto-detect flags from the previously auto-generated comment within the file
41 $FLAG_NO_FULL_QUALIFIERS
42 - when referring to classes don't use package name prefix; handy with IDE auto-import
43 $FLAG_BUILDER_PROTECTED_SETTERS
44 - make builder's setters protected to expose them as public in a subclass on a whitelist basis
45
46
47 Special field modifiers and annotations:
48 transient - ignore the field completely
49 @Nullable - support null value when parcelling, and never throw on null input
50 @NonNull - throw on null input and don't parcel the nullness bit for the field
51 @DataClass.Enum - parcel field as an enum value by ordinal
52 @DataClass.PluralOf(..) - provide a singular version of a collection field name to be used in the builder's 'addFoo(..)'
53 @DataClass.ParcelWith(..) - provide a custom Parcelling class, specifying the custom (un)parcelling logic for this field
54 = <initializer>; - provide default value and never throw if this field was not provided e.g. when using builder
55 /** ... */ - copy given javadoc on field's getters/setters/constructor params/builder setters etc.
56 @hide (in javadoc) - force field's getters/setters/withers/builder setters to be @hide-den if generated
57
58
59 Special methods/etc. you can define:
60
61 <any auto-generatable method>
62 For any method to be generated, if a method with same name and argument types is already
63 defined, than that method will not be generated.
64 This allows you to override certain details on granular basis.
65
66 void onConstructed()
67 Will be called in constructor, after all the fields have been initialized.
68 This is a good place to put any custom validation logic that you may have
69
70 static class $CANONICAL_BUILDER_CLASS extends $BASE_BUILDER_CLASS
71 If a class extending $BASE_BUILDER_CLASS is specified, generated builder's setters will
72 return the provided $CANONICAL_BUILDER_CLASS type.
73 $BASE_BUILDER_CLASS's constructor(s) will be package-private to encourage using $CANONICAL_BUILDER_CLASS instead
74 This allows you to extend the generated builder, adding or overriding any methods you may want
75
76
77 In addition, for any field mMyField(or myField) of type FieldType you can define the following methods:
78
79 void parcelMyField(Parcel dest, int flags)
80 Allows you to provide custom logic for storing mMyField into a Parcel
81
82 static FieldType unparcelMyField(Parcel in)
83 Allows you to provide custom logic to deserialize the value of mMyField from a Parcel
84
85 String myFieldToString()
86 Allows you to provide a custom toString representation of mMyField's value
87
88 FieldType lazyInitMyField()
89 Requests a lazy initialization in getMyField(), with the provided method being the constructor
90 You may additionally mark the fields as volatile to cause this to generate a thread-safe
91 double-check locking lazy initialization
92
93 FieldType defaultMyField()
94 Allows you to provide a default value to initialize the field to, in case an explicit one
95 was not provided.
96 This is an alternative to providing a field initializer that, unlike the initializer,
97 you can use with final fields.
98
99 Version: $CODEGEN_VERSION
100
101 Questions? Feedback?
102 Contact: eugenesusla@
103 Bug/feature request: http://go/codegen-bug
104
105 Slides: http://go/android-codegen
106 In-depth example: http://go/SampleDataClass
107 """
108
109 fun main(args: Array<String>) {
110 if (args.contains("--help")) {
111 println(USAGE)
112 System.exit(0)
113 }
114 if (args.contains("--version")) {
115 println(CODEGEN_VERSION)
116 System.exit(0)
117 }
118 val file = File(args.last()).absoluteFile
119 val sourceLisnesOriginal = file.readLines()
120 val sourceLinesNoClosingBrace = sourceLisnesOriginal.dropLastWhile {
121 it.startsWith("}") || it.all(Char::isWhitespace)
122 }
123 val cliArgs = handleUpdateFlag(args, sourceLinesNoClosingBrace)
124
125 val fileInfo = FileInfo(sourceLisnesOriginal, cliArgs, file)
126 fileInfo.main()
127 file.writeText(fileInfo.stringBuilder.toString().mapLines { trimEnd() })
128 }
129
handleUpdateFlagnull130 private fun handleUpdateFlag(cliArgs: Array<String>, sourceLines: List<String>): Array<String> {
131 if ("--update-only" in cliArgs
132 && sourceLines.none { GENERATED_WARNING_PREFIX in it || it.startsWith("@DataClass") }) {
133 System.exit(0)
134 }
135 return cliArgs - "--update-only"
136 }