com.google.template.soy.types

Class SoyTypes.SoyTypeComparisonOp

java.lang.Object

com.google.template.soy.types.SoyTypes.SoyTypeComparisonOp

All Implemented Interfaces:

SoyTypes.SoyTypeBinaryOperator

Enclosing class:

SoyTypes

public static final class SoyTypes.SoyTypeComparisonOp
extends Object
implements SoyTypes.SoyTypeBinaryOperator

Type resolver for For <, >, <=, and >= operators. The resolver returns null if two SoyType instances are not comparable, otherwise always return BoolType.

In particular,

• Comparing anything with UNKNOWN and ANY is legitimate.
• Comparing numeric types is legitimate.
• Comparing string types is legtimate.
• All other comparisons are invalid. It causes inconsistent behaviors in different backends.

Note that string-number comparisons and string-string comparisons do NOT work with Java backends (both tofu and jbcsrc). These comparisons yield to a RuntimeException. In contrast, JS backend allows these comparisons.

• For string-number comparisons, JS tries to convert string to number. If string is numeric, it compares them numerically. For example, '1' < 2 is true and '1' > 2 is false. If string is not numeric, it always return false. For example, both '1a' < 2 and '1a' > 2 return false.
• For string-string comparisons, JS compares them alphabetically.

Constructor Summary

Constructors

Constructor and Description
SoyTypeComparisonOp()

Method Summary

Modifier and Type	Method and Description
SoyType	resolve(SoyType left, SoyType right)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SoyTypeComparisonOp

public SoyTypeComparisonOp()

Method Detail

resolve

@Nullable
public SoyType resolve(SoyType left,
                                 SoyType right)

Specified by:

resolve in interface SoyTypes.SoyTypeBinaryOperator