Expression

class Expression : Value

An expression defines a formula for computing the value of any layout property, paint property, or filter within a map style. Expressions allow you to style data with multiple feature properties at once, apply conditional logic, and manipulate data with mathematical, logical, and string operators. This allows for sophisticated runtime styling.

Types

Builder

abstract class Builder(operator: String)

Abstract base builder.

CollatorBuilder

class CollatorBuilder : Expression.Builder

Builder for Collator expression.

Companion

object Companion

Static variables and methods.

ExpressionBuilder

open class ExpressionBuilder(operator: String) : Expression.Builder

Builder for Expression.

FormatBuilder

class FormatBuilder : Expression.Builder

Builder for Formatted TextField.

FormatSectionBuilder

class FormatSectionBuilder(content: Expression)

Builder for a Formatted Section.

InterpolatorBuilder

class InterpolatorBuilder(operator: String) : Expression.ExpressionBuilder

Builder for Interpolate Expression.

NumberFormatBuilder

class NumberFormatBuilder(input: Expression) : Expression.Builder

Builder for Number Format expression.

Functions

equals

open operator override fun equals(other: Any?): Boolean

getContents

open fun getContents(): Any?

getLiteral

inline fun <T> getLiteral(): T?

Get the literal value of the expression as given type.

hashCode

open override fun hashCode(): Int

isLiteral

fun isLiteral(): Boolean

Check if the expression is literal.

toJson

open fun toJson(): String

toString

open override fun toString(): String

Properties

literalValue

var literalValue: Any? = null

Return Expression as literal Value.