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module Prism
# The DSL module provides a set of methods that can be used to create prism
# nodes in a more concise manner. For example, instead of writing:
#
# source = Prism::Source.new("[1]")
#
# Prism::ArrayNode.new(
# [
# Prism::IntegerNode.new(
# Prism::IntegerBaseFlags::DECIMAL,
# 1,
# Prism::Location.new(source, 1, 1),
# source
# )
# ],
# Prism::Location.new(source, 0, 1),
# Prism::Location.new(source, 2, 1),
# source
# )
#
# you could instead write:
#
# source = Prism::Source.new("[1]")
#
# ArrayNode(
# IntegerNode(Prism::IntegerBaseFlags::DECIMAL, 1, Location(source, 1, 1)), source),
# Location(source, 0, 1),
# Location(source, 2, 1),
# source
# )
#
# This is mostly helpful in the context of writing tests, but can also be used
# to generate trees programmatically.
module DSL
private
# Create a new Location object
def Location(source = nil, start_offset = 0, length = 0)
Location.new(source, start_offset, length) # steep:ignore
end
<%- nodes.each do |node| -%>
# Create a new <%= node.name %> node
def <%= node.name %>(<%= (node.fields.map(&:name) + ["source = nil, location = Location()"]).join(", ") %>)
<%= node.name %>.new(<%= ["source", *node.fields.map(&:name), "location"].join(", ") %>)
end
<%- end -%>
end
end
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