writing-a-compiler-in-ruby

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vidarh

Method call in method body (e.g: attr_accessor) causes "nested" calls

1

``` class Foo attr_accessor :seq end ``` the attr_accessor bit turns into: ``` # callm :self.:attr_accessor subl $20, %esp movl $2, %ebx movl Foo, %eax movl %eax, (%esp) movl $3481,...

vidarh

ClassScope should inherity from ModuleScope. ModuleScope needs to hold constants. "Global" constants should be held in a module scope - either make GlobalScope inherit from ModuleScope too, or introduce a...

vidarh

The parser will treat "foo" by itself as a local variable because it initially doesn't know if it's a local variable or a method call. When we have identified the...

vidarh

MRI uses type tagging for those. Need to decide whether to do type tagging (more complex code) or do what Python does (memoize small integers) - the benefit of the...

vidarh

GCC cant handle names that start with "@"

2

gcc will not compile variable references that start with an at-sign (@). need to change names of instance and class variables to something else, for example: @var = __classname__instance__var @@var...

bakkdoor

Example: ``` bignum_value.should == 0x8000_0000_0000_0000 ```

vidarh