Class: HDLRuby::Low::RefRange
- Inherits:
-
Ref
- Object
- Base::Expression
- Expression
- Ref
- HDLRuby::Low::RefRange
- Defined in:
- lib/HDLRuby/hruby_db.rb,
lib/HDLRuby/hruby_low.rb,
lib/HDLRuby/hruby_low2c.rb,
lib/HDLRuby/hruby_low2hdr.rb,
lib/HDLRuby/hruby_low2vhd.rb,
lib/HDLRuby/hruby_verilog.rb,
lib/HDLRuby/hruby_low2high.rb,
lib/HDLRuby/hruby_low_mutable.rb,
lib/HDLRuby/hruby_low_resolve.rb,
lib/HDLRuby/hruby_low_skeleton.rb,
lib/HDLRuby/hruby_low_fix_types.rb,
lib/HDLRuby/hruby_low_bool2select.rb,
lib/HDLRuby/hruby_low_casts_without_expression.rb
Overview
Extends the RefRange class with functionality for converting booleans in assignments to select operators.
Direct Known Subclasses
Constant Summary
Constants included from Low2Symbol
Low2Symbol::Low2SymbolPrefix, Low2Symbol::Low2SymbolTable, Low2Symbol::Symbol2LowTable
Instance Attribute Summary collapse
-
#range ⇒ Object
readonly
The access range.
-
#ref ⇒ Object
readonly
The accessed reference.
Attributes inherited from Expression
Attributes included from Hparent
Instance Method Summary collapse
-
#boolean_in_assign2select ⇒ Object
Converts booleans in assignments to select operators.
-
#casts_without_expression! ⇒ Object
Extracts the expressions from the casts.
-
#clone ⇒ Object
Clones the range references (deeply).
-
#each_deep(&ruby_block) ⇒ Object
Iterates over each object deeply.
-
#each_node(&ruby_block) ⇒ Object
(also: #each_expression)
Iterates over the reference children if any.
-
#each_node_deep(&ruby_block) ⇒ Object
Iterates over the nodes deeply if any.
-
#eql?(obj) ⇒ Boolean
Comparison for hash: structural comparison.
-
#explicit_types(type = nil) ⇒ Object
Explicit the types conversions in the range ref where +type+ is the expected type of the condition if any.
-
#from_systemI? ⇒ Boolean
Tells if it is a reference to a systemI signal.
-
#hash ⇒ Object
Hash function.
-
#immutable? ⇒ Boolean
Tells if the expression is immutable (cannot be written.).
-
#initialize(type, ref, range) ⇒ RefRange
constructor
Create a new range reference with +type+ accessing +ref+ at +range+.
-
#map_nodes!(&ruby_block) ⇒ Object
(also: #map_expressions!)
Maps on the children.
-
#path_each(&ruby_block) ⇒ Object
Iterates over the names of the path indicated by the reference.
-
#replace_expressions!(node2rep) ⇒ Object
Replaces sub expressions using +node2rep+ table indicating the node to replace and the corresponding replacement.
-
#resolve ⇒ Object
Resolves the name of the reference (if any) and return the corresponding object.
-
#set_range!(range) ⇒ Object
Sets the range.
-
#set_ref!(ref) ⇒ Object
Sets the base reference.
-
#to_c(res, level = 0, left = false) ⇒ Object
Generates the C text of the equivalent HDLRuby code.
-
#to_c_signal(res, level = 0) ⇒ Object
Generates the C text for reference as left value to a signal.
-
#to_hdr(level = 0) ⇒ Object
Generates the text of the equivalent hdr text.
-
#to_high ⇒ Object
Creates a new high range reference.
-
#to_verilog(unknown = false) ⇒ Object
Converts the system to Verilog code.
-
#to_vhdl(level = 0, std_logic = false) ⇒ Object
Generates the text of the equivalent HDLRuby::High code.
-
#use_name?(*names) ⇒ Boolean
Tell if the expression includes a signal whose name is one of +names+.
Methods inherited from Expression
#boolean?, #break_types!, #each_ref_deep, #extract_selects_to!, #leftvalue?, #replace_names!, #rightvalue?, #set_type!, #signal2subs!, #statement, #to_c_expr
Methods included from Low2Symbol
Methods included from Hparent
#hierarchy, #no_parent!, #scope
Constructor Details
#initialize(type, ref, range) ⇒ RefRange
Create a new range reference with +type+ accessing +ref+ at +range+. def initialize(ref,range)
5892 5893 5894 5895 5896 5897 5898 5899 5900 5901 5902 5903 5904 5905 5906 5907 5908 5909 5910 5911 5912 5913 5914 5915 |
# File 'lib/HDLRuby/hruby_low.rb', line 5892 def initialize(type,ref,range) super(type) # Check and set the refered object. # unless ref.is_a?(Ref) then unless ref.is_a?(Expression) then raise AnyError, "Invalid class for a reference: #{ref.class}." end @ref = ref # And set its parent. ref.parent = self # Check and set the range. first = range.first unless first.is_a?(Expression) then raise AnyError, "Invalid class for a range first: #{first.class}." end last = range.last unless last.is_a?(Expression) then raise AnyError, "Invalid class for a range last: #{last.class}." end @range = first..last # And set their parents. first.parent = last.parent = self end |
Instance Attribute Details
#range ⇒ Object (readonly)
The access range.
5888 5889 5890 |
# File 'lib/HDLRuby/hruby_low.rb', line 5888 def range @range end |
#ref ⇒ Object (readonly)
The accessed reference.
5885 5886 5887 |
# File 'lib/HDLRuby/hruby_low.rb', line 5885 def ref @ref end |
Instance Method Details
#boolean_in_assign2select ⇒ Object
Converts booleans in assignments to select operators.
312 313 314 315 316 317 318 |
# File 'lib/HDLRuby/hruby_low_bool2select.rb', line 312 def boolean_in_assign2select # Recurse on the sub references. return RefRange.new(self.type, self.ref.boolean_in_assign2select, self.range.first.boolean_in_assign2select .. self.range.last.boolean_in_assign2select) end |
#casts_without_expression! ⇒ Object
Extracts the expressions from the casts.
323 324 325 326 327 328 329 330 331 332 333 |
# File 'lib/HDLRuby/hruby_low_casts_without_expression.rb', line 323 def casts_without_expression! # Recurse on the sub references. # return RefRange.new(self.type, # self.ref.casts_without_expression, # self.range.first.casts_without_expression .. # self.range.last.casts_without_expression) self.set_ref!(self.ref.casts_without_expression!) self.set_range!(self.range.first.casts_without_expression! .. self.range.last.casts_without_expression!) return self end |
#clone ⇒ Object
Clones the range references (deeply)
6004 6005 6006 6007 |
# File 'lib/HDLRuby/hruby_low.rb', line 6004 def clone return RefRange.new(@type, @ref.clone, (@range.first.clone)..(@range.last.clone) ) end |
#each_deep(&ruby_block) ⇒ Object
Iterates over each object deeply.
Returns an enumerator if no ruby block is given.
5926 5927 5928 5929 5930 5931 5932 5933 5934 5935 5936 5937 5938 5939 5940 5941 5942 |
# File 'lib/HDLRuby/hruby_low.rb', line 5926 def each_deep(&ruby_block) # No ruby block? Return an enumerator. return to_enum(:each_deep) unless ruby_block # A ruby block? First apply it to current. ruby_block.call(self) # Then apply on the type. self.type.each_deep(&ruby_block) # Then apply on the reference. self.ref.each_deep(&ruby_block) # Then apply on the range if possible. if self.range.first.respond_to?(:each_deep) then self.range.first.each_deep(&ruby_block) end if self.range.last.respond_to?(:each_deep) then self.range.last.each_deep(&ruby_block) end end |
#each_node(&ruby_block) ⇒ Object Also known as: each_expression
Iterates over the reference children if any.
5973 5974 5975 5976 5977 5978 5979 5980 |
# File 'lib/HDLRuby/hruby_low.rb', line 5973 def each_node(&ruby_block) # No ruby block? Return an enumerator. return to_enum(:each_node) unless ruby_block # A ruby block? Apply it on the ranfe and the ref. ruby_block.call(@range.first) ruby_block.call(@range.last) ruby_block.call(@ref) end |
#each_node_deep(&ruby_block) ⇒ Object
Iterates over the nodes deeply if any.
5985 5986 5987 5988 5989 5990 5991 5992 5993 5994 |
# File 'lib/HDLRuby/hruby_low.rb', line 5985 def each_node_deep(&ruby_block) # No ruby block? Return an enumerator. return to_enum(:each_node_deep) unless ruby_block # A ruby block? First apply it to current. ruby_block.call(self) # And recurse on the children. @range.first.each_node_deep(&ruby_block) @range.last.each_node_deep(&ruby_block) @ref.each_node_deep(&ruby_block) end |
#eql?(obj) ⇒ Boolean
Comparison for hash: structural comparison.
NOTE: ranges are assumed to be flattened (a range of range is a range of same level).
5948 5949 5950 5951 5952 5953 5954 5955 5956 5957 |
# File 'lib/HDLRuby/hruby_low.rb', line 5948 def eql?(obj) # General comparison. return false unless super(obj) # Specific comparison. return false unless obj.is_a?(RefRange) return false unless @range.first.eql?(obj.range.first) return false unless @range.last.eql?(obj.range.last) return false unless @ref.eql?(obj.ref) return true end |
#explicit_types(type = nil) ⇒ Object
Explicit the types conversions in the range ref where +type+ is the expected type of the condition if any.
425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 |
# File 'lib/HDLRuby/hruby_low_fix_types.rb', line 425 def explicit_types(type = nil) # Is there a type to match ? if type then # Regenerate the reference and cast it. return Cast.new(type, RefRange.new(self.type,self.ref.explicit_types, self.range.first.explicit_types .. self.range.last.explicit_types)) else # No, recurse with the type of the current range ref. return RefRange.new(self.type, self.ref.explicit_types, self.range.first.explicit_types .. self.range.last.explicit_types) end end |
#from_systemI? ⇒ Boolean
Tells if it is a reference to a systemI signal.
165 166 167 |
# File 'lib/HDLRuby/hruby_low_resolve.rb', line 165 def from_systemI? return self.ref.from_systemI? end |
#hash ⇒ Object
Hash function.
5960 5961 5962 |
# File 'lib/HDLRuby/hruby_low.rb', line 5960 def hash return [super,@range,@ref].hash end |
#immutable? ⇒ Boolean
Tells if the expression is immutable (cannot be written.)
5918 5919 5920 5921 |
# File 'lib/HDLRuby/hruby_low.rb', line 5918 def immutable? # Immutable if the ref is immutable. return self.ref.immutable? end |
#map_nodes!(&ruby_block) ⇒ Object Also known as: map_expressions!
Maps on the children.
1872 1873 1874 1875 1876 1877 1878 |
# File 'lib/HDLRuby/hruby_low_mutable.rb', line 1872 def map_nodes!(&ruby_block) @range = ruby_block.call(@range.first)..ruby_block.call(@range.last) @range.first.parent = self unless @range.first.parent @range.last.parent = self unless @range.last.parent @ref = ruby_block.call(@ref) @ref.parent = self unless @ref.parent end |
#path_each(&ruby_block) ⇒ Object
Iterates over the names of the path indicated by the reference.
Returns an enumerator if no ruby block is given.
5967 5968 5969 5970 |
# File 'lib/HDLRuby/hruby_low.rb', line 5967 def path_each(&ruby_block) # Recurse on the base reference. return ref.path_each(&ruby_block) end |
#replace_expressions!(node2rep) ⇒ Object
Replaces sub expressions using +node2rep+ table indicating the node to replace and the corresponding replacement. Returns the actually replaced nodes and their corresponding replacement.
NOTE: the replacement is duplicated.
1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 |
# File 'lib/HDLRuby/hruby_low_mutable.rb', line 1888 def replace_expressions!(node2rep) # First recurse on the ref. res = self.ref.replace_expressions!(node2rep) # And and the range. res = self.range.first.replace_expressions!(node2rep) res = self.range.last.replace_expressions!(node2rep) # Is there a replacement to on the ref? rep = node2rep[self.ref] if rep then # Yes, do it. rep = rep.clone node = self.ref # node.set_parent!(nil) self.set_ref!(rep) # And register the replacement. res[node] = rep end # Is there a replacement to on the range first? range = self.range rep = node2rep[range.first] if rep then # Yes, do it. rep = rep.clone node = range.first # node.set_parent!(nil) range.first = rep # And register the replacement. res[node] = rep end rep = node2rep[range.last] if rep then # Yes, do it. rep = rep.clone node = range.last # node.set_parent!(nil) range.last = rep # And register the replacement. res[node] = rep end self.set_range!(range) return res end |
#resolve ⇒ Object
Resolves the name of the reference (if any) and return the corresponding object. NOTE: return nil if could not resolve.
172 173 174 |
# File 'lib/HDLRuby/hruby_low_resolve.rb', line 172 def resolve return self.ref.resolve end |
#set_range!(range) ⇒ Object
Sets the range.
1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 |
# File 'lib/HDLRuby/hruby_low_mutable.rb', line 1855 def set_range!(range) # Check and set the range. first = range.first unless first.is_a?(Expression) then raise AnyError, "Invalid class for a range first: #{first.class}." end last = range.last unless last.is_a?(Expression) then raise AnyError, "Invalid class for a range last: #{last.class}." end @range = first..last # And set their parents. first.parent = last.parent = self end |
#set_ref!(ref) ⇒ Object
Sets the base reference.
1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 |
# File 'lib/HDLRuby/hruby_low_mutable.rb', line 1843 def set_ref!(ref) # Check and set the refered object. # unless ref.is_a?(Ref) then unless ref.is_a?(Expression) then raise AnyError, "Invalid class for a reference: #{ref.class}." end @ref = ref # And set its parent. ref.parent = self end |
#to_c(res, level = 0, left = false) ⇒ Object
Generates the C text of the equivalent HDLRuby code.
+level+ is the hierachical level of the object and
+left+ tells if it is a left value or not.
def to_c(level = 0, left = false)
def to_c(res,level = 0, left = false) # Decide if it is a read or a write command = left ? "write" : "read" # res = "( res << "({\n" # Overrides the upper ref and dst... # And allocates a new value for dst. res << (" " * ((level+1)*3)) res << "Value ref,dst = get_value();\n" res << (" " * ((level+1)*3)) res << "unsigned long long first,last;\n" # Save the state of the value pool. res << (" " * ((level+1)*3)) res << "unsigned int pool_state = get_value_pos();\n" # Compute the reference. res << (" " * ((level+1)*3)) # res << "ref = #{self.ref.to_c(level+2);\n" res << "ref = " self.ref.to_c(res,level+2) res << ";\n" # Compute the range. res << (" " * ((level+1)*3)) # res << "first = value2integer(#HDLRuby::Low::RefRange.selfself.rangeself.range.firstself.range.first.to_c(level+2));\n" res << "first = value2integer(" self.range.first.to_c(res,level+2) res << ");\n" res << (" " * ((level+1)*3)) # res << "last = value2integer(#HDLRuby::Low::RefRange.selfself.rangeself.range.lastself.range.last.to_c(level+2));\n" res << "last = value2integer(" self.range.last.to_c(res,level+2) res << ");\n" # Make the access. res << (" " * ((level+1)*3)) # puts "#command_range with first=#HDLRuby::Low::RefRange.selfself.rangeself.range.first and last=#HDLRuby::Low::RefRange.selfself.rangeself.range.last" # res << "dst = #command_range(ref,first,last,#HDLRuby::Low::RefRange.selfself.typeself.type.baseself.type.base.to_c(level),dst);\n" res << "dst = #command_range(ref,first,last," self.type.base.to_c(res,level) res << ",dst);\n" # Restore the state of the value pool. res << (" " * ((level+1)*3)) res << "set_value_pos(pool_state);\n" # Close the computation. res << (" " * (level*3)) res << "dst; })" return res end
3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 |
# File 'lib/HDLRuby/hruby_low2c.rb', line 3014 def to_c(res,level = 0, left = false) # Save the value pool state. res << (" " * (level*3)) << "PV;\n" # Compute the reference. self.ref.to_c(res,level) # res << (" " * (level*3)) # Compute the range. self.range.first.to_c(res,level) self.range.last.to_c(res,level) # Make the access. res << (" " * (level*3)) if left then res << "swriteR(" else res << "sreadR(" end self.type.base.to_c(res,level) res << ");\n" # Restore the value pool state. res << (" " * (level*3)) << "RV;\n" return res end |
#to_c_signal(res, level = 0) ⇒ Object
Generates the C text for reference as left value to a signal.
+level+ is the hierarchical level of the object.
def to_c_signal(level = 0)
def to_c_signal(res,level = 0) # return "make_ref_rangeS(#HDLRuby::Low::RefRange.selfself.refself.ref.to_c_signal(level)," + # "value2integer(#HDLRuby::Low::RefRange.selfself.rangeself.range.firstself.range.first.to_c(level)),value2integer(#HDLRuby::Low::RefRange.selfself.rangeself.range.lastself.range.last.to_c(level)))" res << "make_ref_rangeS(" self.ref.to_c_signal(res,level) res << ",value2integer(" self.range.first.to_c(res,level) res << "),value2integer(" self.range.last.to_c(res,level) res << "))" return res end Generates the C text for reference as left value to a signal. +level+ is the hierarchical level of the object. def to_c_signal(level = 0)
3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 |
# File 'lib/HDLRuby/hruby_low2c.rb', line 3055 def to_c_signal(res,level = 0) res << "make_ref_rangeS(" self.ref.to_c_signal(res,level) res << "," self.type.base.to_c(res,level) res << ",value2integer(({\n" self.range.first.to_c(res,level) res << " " * ((level+1)*3) res << "pop();})" res << "),value2integer(({\n" self.range.last.to_c(res,level) res << " " * ((level+1)*3) res << "pop();})" res << "))" return res end |
#to_hdr(level = 0) ⇒ Object
Generates the text of the equivalent hdr text. +level+ is the hierachical level of the object.
695 696 697 698 |
# File 'lib/HDLRuby/hruby_low2hdr.rb', line 695 def to_hdr(level = 0) return self.ref.to_hdr(level) + "[(#{self.range.first.to_hdr(level)})..(#{self.range.last.to_hdr(level)})]" end |
#to_high ⇒ Object
Creates a new high range reference.
484 485 486 487 488 |
# File 'lib/HDLRuby/hruby_low2high.rb', line 484 def to_high return HDLRuby::High::RefRange.new(self.type.to_high, self.ref.to_high, self.range.first.to_high..self.range.last.to_high) end |
#to_verilog(unknown = false) ⇒ Object
Converts the system to Verilog code.
1492 1493 1494 |
# File 'lib/HDLRuby/hruby_verilog.rb', line 1492 def to_verilog(unknown = false) return "#{self.ref.to_verilog}[#{self.range.first.to_getrange}:#{self.range.last.to_getrange}]" end |
#to_vhdl(level = 0, std_logic = false) ⇒ Object
Generates the text of the equivalent HDLRuby::High code. +level+ is the hierachical level of the object. +std_logic+ tells if std_logic computation is to be done.
1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 |
# File 'lib/HDLRuby/hruby_low2vhd.rb', line 1475 def to_vhdl(level = 0, std_logic = false) # Generates the direction. first = self.range.first first = first.content if first.is_a?(Value) last = self.range.last last = last.content if last.is_a?(Value) direction = first >= last ? "downto " : " to " # Generate the reference. # Forced std_logic case. if std_logic then if first == last then # No range, single bit access for forcing std_logic. return self.ref.to_vhdl(level) + "(#{self.range.first.to_vhdl(level)})" else return self.ref.to_vhdl(level) + "((#{self.range.first.to_vhdl(level)}) " + direction + "(#{self.range.last.to_vhdl(level)}))(0)" end else return self.ref.to_vhdl(level) + "((#{self.range.first.to_vhdl(level)}) " + direction + "(#{self.range.last.to_vhdl(level)}))" end end |
#use_name?(*names) ⇒ Boolean
Tell if the expression includes a signal whose name is one of +names+.
5997 5998 5999 6000 6001 |
# File 'lib/HDLRuby/hruby_low.rb', line 5997 def use_name?(*names) # Recurse on the range and the reference. return @range.first.use_name?(names) || @range.last.use_name?(names) || @ref.use_name?(*names) end |