module YAML::Schema::Core

Overview

Provides utility methods for the YAML 1.1 core schema with the additional independent types specified in http://yaml.org/type/

Defined in:

Class Method Summary

• .each(node : YAML::Nodes::Mapping, &)

  Invokes the block for each of the given nodes keys and values, resolving merge keys (<<) when found (keys and values of the resolved merge mappings are yielded, recursively).

• .parse(data : String | IO) : YAML::Any

  Deserializes a YAML document.

• .parse_all(data : String | IO) : Array(YAML::Any)

  Deserializes multiple YAML documents.

• .parse_null_or(node : YAML::Nodes::Node, &)

  If node parses to a null value, returns nil, otherwise invokes the given block.

• .parse_scalar(pull_parser : YAML::PullParser) : Nil | Bool | Int64 | Float64 | String | Time | Bytes

  Assuming the pull_parser is positioned in a scalar, parses it according to the core schema, taking the scalar's style and tag into account, then advances the pull parser.

• .parse_scalar(string : String) : Nil | Bool | Int64 | Float64 | String | Time | Bytes

  Parses a string according to the core schema, assuming the string had a plain style.

• .parse_scalar(node : YAML::Nodes::Scalar) : Nil | Bool | Int64 | Float64 | String | Time | Bytes

  Parses a scalar value from the given node.

• .reserved_string?(string) : Bool

  Returns whether a string is reserved and must non be output with a plain style, according to the core schema.

Class Method Detail

require "yaml"

YAML::Schema::Core.parse_scalar("hello") # => "hello"
YAML::Schema::Core.parse_scalar("1.2")   # => 1.2
YAML::Schema::Core.parse_scalar("false") # => false

require "yaml"

YAML::Schema::Core.reserved_string?("hello") # => false
YAML::Schema::Core.reserved_string?("1.2")   # => true
YAML::Schema::Core.reserved_string?("false") # => true