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implement larger/smaller or equal

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This commit is contained in:
Torsten Ruger
2018-04-24 19:45:58 +03:00
parent 7a2160e9b4
commit ec5a7f8a02
4 changed files with 70 additions and 28 deletions
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2
lib/risc/boot.rb
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@ -184,7 +184,7 @@ module Risc
Risc.operators.each do |op|
obj.instance_type.add_method Builtin::Integer.operator_method(op)
end
[:putint, :div4, :div10 , :<, :>].each do |f| #div4 is just a forward declaration
[:putint, :div4, :div10 , :<,:<= , :>=, :>].each do |f| #div4 is just a forward declaration
obj.instance_type.add_method Builtin::Integer.send(f , nil)
end
end

12
lib/risc/builtin/integer.rb
View File

@ -25,6 +25,12 @@ module Risc
def <( context )
comparison( :< )
end
def <=( context )
comparison( :<= )
end
def >=( context )
comparison( :>= )
end
def comparison( operator )
compiler = compiler_for(:Integer, operator ,{other: :Integer})
builder = compiler.builder(true, compiler.method)
@ -33,12 +39,14 @@ module Risc
merge_label = Risc.label(compiler.method , "merge_label_#{builder.object_id}")
builder.reduce_int( "#{operator} fix me", me )
builder.reduce_int( "#{operator} fix arg", other )
if(operator == :<)
if(operator.to_s.start_with?('<') )
me , other = other , me
end
builder.add_code Risc.op( "#{operator} operator", :- , me , other)
builder.add_code IsMinus.new( "#{operator} if", false_label)
builder.add_code IsZero.new( "#{operator} if", false_label)
if(operator.to_s.length == 1)
builder.add_code IsZero.new( "#{operator} if", false_label)
end
builder.add_load_constant("#{operator} new int", Parfait.object_space.true_object , other)
builder.add_code Risc::Branch.new("jump over false", merge_label)
builder.add_code false_label