Class: HDLRuby::High::If
- Inherits:
-
Low::If
- Object
- Base::Statement
- Low::Statement
- Low::If
- HDLRuby::High::If
- Includes:
- HStatement
- Defined in:
- lib/HDLRuby/hruby_high.rb
Overview
Describes a high-level if statement.
Constant Summary collapse
Constants included from Low::Low2Symbol
Low::Low2Symbol::Low2SymbolPrefix, Low::Low2Symbol::Low2SymbolTable, Low::Low2Symbol::Symbol2LowTable
Instance Attribute Summary
Attributes inherited from Low::If
Attributes included from Low::Hparent
Instance Method Summary collapse
-
#helse(mode = nil, &ruby_block) ⇒ Object
Sets the block executed in +mode+ when the condition is not met to the block generated by the execution of +ruby_block+.
-
#helsif(next_cond, mode = nil, &ruby_block) ⇒ Object
Sets the block executed in +mode+ when the condition is not met but +next_cond+ is met to the block generated by the execution of +ruby_block+.
-
#initialize(condition, mode = nil, &ruby_block) ⇒ If
constructor
Creates a new if statement with a +condition+ that when met lead to the execution of the block in +mode+ generated by the execution of +ruby_block+.
-
#to_low ⇒ Object
Converts the if to HDLRuby::Low.
Methods included from HStatement
Methods inherited from Low::If
#add_noif, #blocks2seq!, #boolean_in_assign2select!, #casts_without_expression!, #clone, #delete_noif!, #delete_related!, #delete_unless!, #each_block, #each_block_deep, #each_deep, #each_node, #each_node_deep, #each_noif, #each_statement, #each_statement_deep, #eql?, #explicit_types!, #extract_declares!, #extract_selects!, #hash, #map_nodes!, #map_noifs!, #mix?, #par_in_seq2seq!, #replace_expressions!, #replace_names!, #set_condition!, #set_no!, #set_yes!, #to_c, #to_ch, #to_hdr, #to_high, #to_seq!, #to_upper_space!, #to_verilog, #to_vhdl, #use_name?, #with_var
Methods inherited from Low::Statement
#add_blocks_code, #add_make_block, #behavior, #block, #blocks2seq!, #break_types!, #clone, #delete_related!, #delete_unless!, #each_deep, #each_statement, #eql?, #explicit_types!, #extract_declares!, #hash, #mix?, #par_in_seq2seq!, #parent_system, #replace_expressions!, #replace_names!, #scope, #to_c, #to_ch, #to_hdr, #to_high, #to_seq!, #to_upper_space!, #to_vhdl, #top_block, #top_scope, #use_name?, #with_boolean!
Methods included from Low::Low2Symbol
Methods included from Low::Hparent
Constructor Details
#initialize(condition, mode = nil, &ruby_block) ⇒ If
Creates a new if statement with a +condition+ that when met lead to the execution of the block in +mode+ generated by the execution of +ruby_block+.
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# File 'lib/HDLRuby/hruby_high.rb', line 2248 def initialize(condition, mode = nil, &ruby_block) # Create the yes block. yes_block = High.make_block(mode,&ruby_block) # Creates the if statement. super(condition.to_expr,yes_block) end |
Instance Method Details
#helse(mode = nil, &ruby_block) ⇒ Object
Sets the block executed in +mode+ when the condition is not met to the block generated by the execution of +ruby_block+.
Can only be used once.
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# File 'lib/HDLRuby/hruby_high.rb', line 2259 def helse(mode = nil, &ruby_block) # If there is a no block, it is an error. raise AnyError, "Cannot have two helse for a single if statement." if self.no # Create the no block if required no_block = High.make_block(mode,&ruby_block) # Sets the no block. self.no = no_block end |
#helsif(next_cond, mode = nil, &ruby_block) ⇒ Object
Sets the block executed in +mode+ when the condition is not met but +next_cond+ is met to the block generated by the execution of +ruby_block+.
Can only be used if the no-block is not set yet.
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# File 'lib/HDLRuby/hruby_high.rb', line 2273 def helsif(next_cond, mode = nil, &ruby_block) # If there is a no block, it is an error. raise AnyError, "Cannot have an helsif after an helse." if self.no # Create the noif block if required noif_block = High.make_block(mode,&ruby_block) # Adds the noif block. self.add_noif(next_cond.to_expr,noif_block) end |
#to_low ⇒ Object
Converts the if to HDLRuby::Low.
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# File 'lib/HDLRuby/hruby_high.rb', line 2283 def to_low # no may be nil, so treat it appart noL = self.no ? self.no.to_low : nil # Now generate the low-level if. ifL = HDLRuby::Low::If.new(self.condition.to_low, self.yes.to_low,noL) self.each_noif {|cond,block| ifL.add_noif(cond.to_low,block.to_low)} # # For debugging: set the source high object # ifL.properties[:low2high] = self.hdr_id # self.properties[:high2low] = ifL return ifL end |