Class: HDLRuby::Low::Operation

Inherits:
Expression
  • Object
show all
Defined in:
lib/HDLRuby/hruby_db.rb,
lib/HDLRuby/hruby_low.rb,
lib/HDLRuby/hruby_low2c.rb,
lib/HDLRuby/hruby_low2vhd.rb,
lib/HDLRuby/hruby_low2high.rb,
lib/HDLRuby/hruby_low_mutable.rb,
lib/HDLRuby/hruby_low_skeleton.rb,
lib/HDLRuby/hruby_low_fix_types.rb

Overview

Extends the Operation class with fixing of types and constants.

Direct Known Subclasses

Binary, Select, Unary

Constant Summary

Constants included from Low2Symbol

Low2Symbol::Low2SymbolPrefix, Low2Symbol::Low2SymbolTable, Low2Symbol::Symbol2LowTable

Instance Attribute Summary collapse

Attributes inherited from Expression

#type

Attributes included from Hparent

#parent

Instance Method Summary collapse

Methods inherited from Expression

#boolean?, #break_types!, #clone, #each_node, #each_node_deep, #each_ref_deep, #extract_selects_to!, #leftvalue?, #map_nodes!, #replace_expressions!, #replace_names!, #rightvalue?, #set_type!, #statement, #use_name?

Methods included from Low2Symbol

#to_sym

Methods included from Hparent

#scope

Constructor Details

#initialize(type, operator) ⇒ Operation

Creates a new operation with +type+ applying +operator+. def initialize(operator)



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# File 'lib/HDLRuby/hruby_low.rb', line 4058

def initialize(type,operator)
    super(type)
    # Check and set the operator.
    @operator = operator.to_sym
end

Instance Attribute Details

#operator ⇒ Object (readonly)

The operator of the operation.



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# File 'lib/HDLRuby/hruby_low.rb', line 4054

def operator
  @operator
end

Instance Method Details

#eql?(obj) ⇒ Boolean

Comparison for hash: structural comparison.

Returns:

  • (Boolean) 


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# File 'lib/HDLRuby/hruby_low.rb', line 4065

def eql?(obj)
    # General comparison.
    return false unless super(obj)
    # Specific comparison.
    return false unless obj.is_a?(Operation)
    return false unless @operator.eql?(obj.operator)
    return true
end

#explicit_types(type = nil) ⇒ Object

Explicit the types conversions in the operation where +type+ is the expected type of the condition if any.



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# File 'lib/HDLRuby/hruby_low_fix_types.rb', line 225

def explicit_types(type = nil)
    raise "Should implement explicit_types for class #{self.class}."
end

#hash ⇒ Object

Hash function.



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# File 'lib/HDLRuby/hruby_low.rb', line 4075

def hash
    return [super,@operator].hash
end

#set_operator!(operator) ⇒ Object

Sets the operator.



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# File 'lib/HDLRuby/hruby_low_mutable.rb', line 1362

def set_operator!(operator)
    # Check and set the operator.
    @operator = operator.to_sym
end

#to_c(level = 0) ⇒ Object

Generates the C text of the equivalent HDLRuby::High code. +level+ is the hierachical level of the object.

Raises:



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# File 'lib/HDLRuby/hruby_low2c.rb', line 1530

def to_c(level = 0)
    # Should never be here.
    raise AnyError, "Internal error: to_c should be implemented in class :#{self.class}"
end

#to_high(level = 0) ⇒ Object

Generates the text of the equivalent HDLRuby::High code. +level+ is the hierachical level of the object.

Raises:



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# File 'lib/HDLRuby/hruby_low2high.rb', line 578

def to_high(level = 0)
    # Should never be here.
    raise AnyError, "Internal error: to_high should be implemented in class :#{self.class}"
end

#to_vhdl(level = 0) ⇒ Object

Generates the text of the equivalent HDLRuby::High code. +level+ is the hierachical level of the object.

Raises:



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# File 'lib/HDLRuby/hruby_low2vhd.rb', line 1212

def to_vhdl(level = 0)
    # Should never be here.
    raise AnyError, "Internal error: to_vhdl should be implemented in class :#{self.class}"
end