136 lines
2.2 KiB
Ruby
136 lines
2.2 KiB
Ruby
# collection of the simple ones, int and strings and such
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module Ast
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class IntegerExpression < Expression
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attr_reader :value
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def initialize val
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@value = val
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end
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def attributes
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[:value]
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end
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def to_s
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value.to_s
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end
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end
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class TrueExpression < Expression
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def to_s
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""
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end
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def attributes
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[]
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end
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end
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class FalseExpression < Expression
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def to_s
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""
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end
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def attributes
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[]
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end
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end
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class NilExpression < Expression
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def to_s
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""
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end
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def attributes
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[]
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end
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end
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class NameExpression < Expression
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attr_reader :name
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def initialize name
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@name = name.to_sym
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end
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def attributes
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[:name]
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end
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def inspect
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"#{self.class.name}.new(#{name.inspect})"
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end
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def to_s
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name.to_s
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end
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end
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class TypedName < NameExpression
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attr_reader :type
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def initialize type , name
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super(name)
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@type = type.to_sym
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end
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def attributes
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[:type, :name]
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end
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def inspect
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"#{self.class.name}.new(#{type.inspect},#{name.inspect})"
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end
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def to_s
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inspect
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end
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end
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class VariableDefinition < TypedName
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attr_reader :right
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def initialize type , name , right
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super(type , name)
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@right = right
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end
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def attributes
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super + [:right]
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end
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def inspect
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self.class.name + ".new(" + type.inspect + "," + name.inspect + "," + right.inspect + ")"
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end
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def to_s
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inspect
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end
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end
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class VariableExpression < NameExpression
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end
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class AssignmentExpression < NameExpression
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attr_reader :right
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def initialize name, right
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super(name)
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@right = right
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end
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def attributes
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super + [:right]
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end
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def inspect
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self.class.name + ".new(" + name.inspect + "," + right.inspect + ")"
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end
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def to_s
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"#{left} = #{right}"
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end
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end
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class ModuleName < NameExpression
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end
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class StringExpression < Expression
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attr_reader :string
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def initialize str
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@string = str
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end
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def attributes
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[:string]
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end
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def inspect
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self.class.name + '.new("' + string + '")'
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end
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def to_s
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'"' + string.to_s + '"'
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end
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end
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end
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