<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 PRIMITIVE_ARRAY_TYPES = listOf("byte[]", "short[]", "int[]", "long[]", "char[]", "float[]", "double[]", "boolean[]")
14 val BOXED_PRIMITIVE_TYPES = PRIMITIVE_TYPES.map { it.capitalize() } - "Int" + "Integer" - "Char" + "Character"
15
16 val BUILTIN_SPECIAL_PARCELLINGS = listOf("Pattern")
17
18 const val FLAG_BUILDER_PROTECTED_SETTERS = "--builder-protected-setters"
19 const val FLAG_NO_FULL_QUALIFIERS = "--no-full-qualifiers"
20
21 val JAVA_PARSER = JavaParser()
22
23 /** @see [FeatureFlag] */
24 val USAGE = """
25 Usage: $CODEGEN_NAME [--[PREFIX-]FEATURE...] JAVAFILE
26
27 Generates boilerplade parcelable/data class code at the bottom of JAVAFILE, based o fields' declaration in the given JAVAFILE's top-level class
28
29 FEATURE represents some generatable code, and can be among:
featurenull30 ${FeatureFlag.values().map { feature ->
31 " ${feature.kebabCase}" to feature.desc
32 }.columnize(" - ")}
33
34 And PREFIX can be:
35 <empty> - request to generate the feature
36 no - suppress generation of the feature
37 hidden - request to generate the feature with @hide
38
39 Extra options:
40 --help - view this help
41 --update-only - auto-detect flags from the previously auto-generated comment within the file
42 $FLAG_NO_FULL_QUALIFIERS
43 - when referring to classes don't use package name prefix; handy with IDE auto-import
44 $FLAG_BUILDER_PROTECTED_SETTERS
45 - make builder's setters protected to expose them as public in a subclass on a whitelist basis
46
47
48 Special field modifiers and annotations:
49 transient - ignore the field completely
50 @Nullable - support null value when parcelling, and never throw on null input
51 @NonNull - throw on null input and don't parcel the nullness bit for the field
52 @DataClass.Enum - parcel field as an enum value by ordinal
53 @DataClass.PluralOf(..) - provide a singular version of a collection field name to be used in the builder's 'addFoo(..)'
54 @DataClass.ParcelWith(..) - provide a custom Parcelling class, specifying the custom (un)parcelling logic for this field
55 = <initializer>; - provide default value and never throw if this field was not provided e.g. when using builder
56 /** ... */ - copy given javadoc on field's getters/setters/constructor params/builder setters etc.
57 @hide (in javadoc) - force field's getters/setters/withers/builder setters to be @hide-den if generated
58
59
60 Special methods/etc. you can define:
61
62 <any auto-generatable method>
63 For any method to be generated, if a method with same name and argument types is already
64 defined, than that method will not be generated.
65 This allows you to override certain details on granular basis.
66
67 void onConstructed()
68 Will be called in constructor, after all the fields have been initialized.
69 This is a good place to put any custom validation logic that you may have
70
71 static class $CANONICAL_BUILDER_CLASS extends $BASE_BUILDER_CLASS
72 If a class extending $BASE_BUILDER_CLASS is specified, generated builder's setters will
73 return the provided $CANONICAL_BUILDER_CLASS type.
74 $BASE_BUILDER_CLASS's constructor(s) will be package-private to encourage using $CANONICAL_BUILDER_CLASS instead
75 This allows you to extend the generated builder, adding or overriding any methods you may want
76
77
78 In addition, for any field mMyField(or myField) of type FieldType you can define the following methods:
79
80 void parcelMyField(Parcel dest, int flags)
81 Allows you to provide custom logic for storing mMyField into a Parcel
82
83 static FieldType unparcelMyField(Parcel in)
84 Allows you to provide custom logic to deserialize the value of mMyField from a Parcel
85
86 String myFieldToString()
87 Allows you to provide a custom toString representation of mMyField's value
88
89 FieldType lazyInitMyField()
90 Requests a lazy initialization in getMyField(), with the provided method being the constructor
91 You may additionally mark the fields as volatile to cause this to generate a thread-safe
92 double-check locking lazy initialization
93
94 FieldType defaultMyField()
95 Allows you to provide a default value to initialize the field to, in case an explicit one
96 was not provided.
97 This is an alternative to providing a field initializer that, unlike the initializer,
98 you can use with final fields.
99
100 Version: $CODEGEN_VERSION
101
102 Questions? Feedback?
103 Contact: eugenesusla@
104 Bug/feature request: http://go/codegen-bug
105
106 Slides: http://go/android-codegen
107 In-depth example: http://go/SampleDataClass
108 """
109
110 fun main(args: Array<String>) {
111 if (args.contains("--help")) {
112 println(USAGE)
113 System.exit(0)
114 }
115 if (args.contains("--version")) {
116 println(CODEGEN_VERSION)
117 System.exit(0)
118 }
119 val file = File(args.last()).absoluteFile
120 val sourceLisnesOriginal = file.readLines()
121 val sourceLinesNoClosingBrace = sourceLisnesOriginal.dropLastWhile {
122 it.startsWith("}") || it.all(Char::isWhitespace)
123 }
124 val cliArgs = handleUpdateFlag(args, sourceLinesNoClosingBrace)
125
126 val fileInfo = FileInfo(sourceLisnesOriginal, cliArgs, file)
127 fileInfo.main()
128 file.writeText(fileInfo.stringBuilder.toString().mapLines { trimEnd() })
129 }
130
handleUpdateFlagnull131 private fun handleUpdateFlag(cliArgs: Array<String>, sourceLines: List<String>): Array<String> {
132 if ("--update-only" in cliArgs
133 && sourceLines.none { GENERATED_WARNING_PREFIX in it || it.startsWith("@DataClass") }) {
134 System.exit(0)
135 }
136 return cliArgs - "--update-only"
137 }
138