114 lines
3 KiB
Ruby
114 lines
3 KiB
Ruby
# frozen_string_literal: true
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module Rpl
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module Lang
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module Core
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module_function
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# convert an object into a string
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def to_string( stack, dictionary )
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stack, args = Rpl::Lang.stack_extract( stack, [:any] )
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stack << { type: :string,
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value: Rpl::Lang.to_string( args[0] ) }
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[stack, dictionary]
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end
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# convert a string into an object
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def from_string( stack, dictionary )
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stack, args = Rpl::Lang.stack_extract( stack, [%i[string]] )
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parsed_input = Rpl::Lang.parse_input( args[0][:value] )
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stack += parsed_input
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[stack, dictionary]
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end
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# convert ASCII character code in stack level 1 into a string
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def chr( stack, dictionary )
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stack, args = Rpl::Lang.stack_extract( stack, [%i[numeric]] )
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stack << { type: :string,
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value: args[0][:value].to_i.chr }
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[stack, dictionary]
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end
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# return ASCII code of the first character of the string in stack level 1 as a real number
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def num( stack, dictionary )
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stack, args = Rpl::Lang.stack_extract( stack, [%i[string]] )
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stack << { type: :numeric,
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base: 10,
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value: args[0][:value].ord }
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[stack, dictionary]
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end
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# return the length of the string
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def size( stack, dictionary )
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stack, args = Rpl::Lang.stack_extract( stack, [%i[string]] )
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stack << { type: :numeric,
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base: 10,
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value: args[0][:value].length }
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[stack, dictionary]
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end
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# search for the string in level 1 within the string in level 2
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def pos( stack, dictionary )
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stack, args = Rpl::Lang.stack_extract( stack, [%i[string], %i[string]] )
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stack << { type: :numeric,
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base: 10,
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value: args[1][:value].index( args[0][:value] ) }
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[stack, dictionary]
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end
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# return a substring of the string in level 3
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def sub( stack, dictionary )
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stack, args = Rpl::Lang.stack_extract( stack, [%i[numeric], %i[numeric], %i[string]] )
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stack << { type: :string,
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value: args[2][:value][ (args[1][:value] - 1)..(args[0][:value] - 1) ] }
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[stack, dictionary]
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end
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# reverse string or list
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def rev( stack, dictionary )
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stack, args = Rpl::Lang.stack_extract( stack, [%i[string list]] )
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result = args[0]
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case args[0][:type]
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when :string
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result = { type: :string,
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value: args[0][:value].reverse }
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when :list
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result[:value].reverse!
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end
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stack << result
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[stack, dictionary]
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end
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# split string
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def split( stack, dictionary )
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stack, args = Rpl::Lang.stack_extract( stack, [%i[string], %i[string]] )
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args[1][:value].split( args[0][:value] ).each do |elt|
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stack << { type: :string,
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value: elt }
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end
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[stack, dictionary]
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end
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end
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end
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end
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