herolib/aiprompts/v_core/json2/decoder2.md

module decoder2

Contents

• decode
• decode_array
• BooleanDecoder
• NullDecoder
• NumberDecoder
• StringDecoder
• JsonDecodeError

decode

fn decode[T](val string) !T

decode decodes a JSON string into a specified type.

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decode_array

fn decode_array[T](src string) !T

decode_array is a generic function that decodes a JSON string into the array target type.

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BooleanDecoder

interface BooleanDecoder {
mut:
	// called with converted bool
	// already checked so no error needed
	from_json_boolean(boolean_value bool)
}

implements decoding json true/false

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NullDecoder

interface NullDecoder {
mut:
	// only has one value
	// already checked so no error needed
	from_json_null()
}

implements decoding json null

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NumberDecoder

interface NumberDecoder {
mut:
	// called with raw string of number e.g. '-1.234e23'
	from_json_number(raw_number string) !
}

implements decoding json numbers, e.g. -1.234e23

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StringDecoder

interface StringDecoder {
mut:
	// called with raw string (minus apostrophes) e.g. 'hello, \u2164!'
	from_json_string(raw_string string) !
}

implements decoding json strings, e.g. "hello, \u2164!"

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JsonDecodeError

struct JsonDecodeError {
	Error
	context string
pub:
	message string

	line      int
	character int
}

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