Class: Dhall::TextLiteral

Inherits:

Expression

• Object
• Expression
• Dhall::TextLiteral

Defined in:

lib/dhall/ast.rb,
lib/dhall/binary.rb,
lib/dhall/normalize.rb

Class Method Summary

• .decode(*chunks) ⇒ Object
• .for(*chunks) ⇒ Object

Instance Method Summary

• #as_json ⇒ Object
• #end_empty? ⇒ Boolean
• #flatten ⇒ Object
• #normalize ⇒ Object
• #start_empty? ⇒ Boolean

Methods inherited from Expression

#&, #*, #+, #as_dhall, #cache_key, #call, #concat, #deep_merge, #deep_merge_type, #dhall_eq, #digest, #fetch, #fusion, #merge, #resolve, #shift, #slice, #substitute, #to_cbor, #to_proc, #to_s, #|

Class Method Details

.decode(*chunks) ⇒ Object

# File 'lib/dhall/binary.rb', line 180

def self.decode(*chunks)
	lead_text, *pairs = chunks
	chunks =
		[Text.new(value: lead_text)] +
		pairs.each_slice(2).flat_map do |(e, t)|
			[Dhall.decode(e), Text.new(value: t)]
		end

	chunks.length == 1 ? chunks.first : TextLiteral.new(chunks: chunks)
end

.for(*chunks) ⇒ Object

# File 'lib/dhall/ast.rb', line 1164

def self.for(*chunks)
	fixed =
		([""] + chunks)
		.flat_map { |c| ["", c, ""] }
		.map { |c| c.is_a?(Expression) ? c : Text.new(value: c.to_s) }
		.chunk { |x| x.is_a?(Text) }.flat_map do |(is_text, group)|
			is_text ? group.reduce(&:<<) : group
		end

	fixed.length == 1 ? fixed.first : new(chunks: fixed)
end

Instance Method Details

#as_json ⇒ Object

# File 'lib/dhall/ast.rb', line 1184

def as_json
	[18, *chunks.map { |chunk| chunk.is_a?(Text) ? chunk.value : chunk.as_json }]
end

#end_empty? ⇒ Boolean

Returns:

• (Boolean)

# File 'lib/dhall/ast.rb', line 1180

def end_empty?
	chunks.last.empty?
end

#flatten ⇒ Object

# File 'lib/dhall/normalize.rb', line 385

def flatten
	with(chunks: chunks.flat_map do |chunk|
		chunk.is_a?(TextLiteral) ? chunk.chunks : chunk
	end)
end

#normalize ⇒ Object

# File 'lib/dhall/normalize.rb', line 374

def normalize
	lit = TextLiteral.for(*super.flatten.chunks)

	if lit.is_a?(TextLiteral) && lit.chunks.length == 3 &&
	   lit.start_empty? && lit.end_empty?
		lit.chunks[1]
	else
		lit
	end
end

#start_empty? ⇒ Boolean

Returns:

• (Boolean)

# File 'lib/dhall/ast.rb', line 1176

def start_empty?
	chunks.first.empty?
end