Exonerate.Decimal (exonerate v1.2.2)

Helper module for Decimal support in Exonerate.

This module provides utilities for checking if decimal mode is enabled at a given schema location and for converting values to Decimal.

Usage

Enable decimal mode with the :decimal option:

# All numeric locations use Decimal arithmetic
Exonerate.function_from_string(:def, :validate, schema, decimal: :all)

# Specific paths use Decimal arithmetic
Exonerate.function_from_string(:def, :validate, schema,
  decimal: [at: ["/properties/price", "/properties/amount"]]
)

When decimal mode is enabled at a location:

"type": "number" values (float/integer) are converted to Decimal
"type": "integer" values are converted to Decimal
"type": "string" values are parsed as Decimal (validation error if invalid)
Numeric filters (minimum, maximum, multipleOf, etc.) use Decimal arithmetic

Summary

Functions

compare(a, b)

Compares two Decimal values. Returns :lt, :eq, or :gt.

convert(value)

Converts a value to Decimal. Returns {:ok, decimal} or {:error, reason}.

enabled?(resource, pointer, opts)

Checks if decimal mode is enabled at the given resource/pointer location.

from_schema(value)

Converts a schema value (from JSON) to Decimal for comparison. Schema values can be numbers or strings.

rem(a, b)

Computes the remainder of a / b.

zero()

Returns Decimal representing zero.