kotlin-add-null-check — human mapping

A painting is a person's account of this edit as text, recorded independently of the node mapping - a rendering often has several equally defensible answers where the mapping has one. Deletions and insertions carry no position on the opposite side in a painting, so that panel draws no caret for them.

Before1fun processUserInput(input: String?): String {
2    return input.uppercase()
3}
4
5fun main() {
6    val input: String? = null
7    val result = processUserInput(input)
8    println(result)
9}
10

After1fun processUserInput(input: String?): String {
2    if (input == null) {
3        return ""
4    }
5    return input.uppercase()
6}
7
8fun main() {
9    val input: String? = null
10    val result = processUserInput(input)
11    println(result)
12}
13

Before1fun processUserInput(input: String?): String {
2    return input.uppercase()
3}
4
5fun main() {
6    val input: String? = null
7    val result = processUserInput(input)
8    println(result)
9}
10

After1fun processUserInput(input: String?): String {
2    if (input == null) {
3        return ""
4    }
5    return input.uppercase()
6}
7
8fun main() {
9    val input: String? = null
10    val result = processUserInput(input)
11    println(result)
12}
13

Before1fun processUserInput(input: String?): String {
2    return input.uppercase()
3}
4
5fun main() {
6    val input: String? = null
7    val result = processUserInput(input)
8    println(result)
9}
10

After1fun processUserInput(input: String?): String {
2    if (input == null) {
3        return ""
4    }
5    return input.uppercase()
6}
7
8fun main() {
9    val input: String? = null
10    val result = processUserInput(input)
11    println(result)
12}
13

Before

source_file

function_declaration

fun "fun"

identifier "processUserInput"

function_value_parameters

( "("

parameter

identifier "input"

: ":"

nullable_type

user_type

identifier "String"

? "?"

) ")"

: ":"

user_type

identifier "String"

function_body

block

{ "{"

return_expression

return "return"

call_expression

navigation_expression

identifier "input"

. "."

identifier "uppercase"

value_arguments

( "("

) ")"

} "}"

function_declaration (+40 nodes collapsed)

After

source_file

function_declaration

fun "fun"

identifier "processUserInput"

function_value_parameters

( "("

parameter

identifier "input"

: ":"

nullable_type

user_type

identifier "String"

? "?"

) ")"

: ":"

user_type

identifier "String"

function_body

block

{ "{"

if_expression

if "if"

( "("

binary_expression

identifier "input"

== "=="

identifier "null"

) ")"

block

{ "{"

return_expression

return "return"

string_literal

" "\""

} "}"

return_expression

return "return"

call_expression

navigation_expression

identifier "input"

. "."

identifier "uppercase"

value_arguments

( "("

) ")"

} "}"

function_declaration (+40 nodes collapsed)

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