80 lines
2.1 KiB
Ruby
80 lines
2.1 KiB
Ruby
# Virtual
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# Object Oriented
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# Language
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#
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# VOOL is the abstraction of ruby, ruby minus some of the fluff
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# fluff is generally what makes ruby nice to use, like 3 ways to achieve the same thing
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# if/unless/ternary , reverse ifs (ie statement if condition), reverse whiles,
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# implicit blocks, splats and multiple assigns etc
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#
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# Also, Vool is a typed tree, not abstract, so there is a base class Statement
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# and all it's derivation that make up the syntax tree
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#
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# Also Vool has expression and statements and simple syntax. So returns must be explicit
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# not everthing is just assignable, ifs can only test simple expressions etc (wip)
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#
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# This allows us to write compilers or passes of the compiler(s) as functions on the
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# classes.
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#
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module Vool
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# Base class for all statements in the tree. Derived classes correspond to known language
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# constructs
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#
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# Compilers or compiler passes are written by implementing methods.
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#
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class Statement
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def to_mom( _ )
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# temporary warning to find unimplemented kids
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raise "Not implemented for #{self}"
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end
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def at_depth(depth , *strings)
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prefix = " " * 2 * depth
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strings.collect{|str| prefix + str}.join("\n")
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end
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end
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class Expression
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def ct_type
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nil
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end
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def normalize
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raise "should not be normalized #{self}"
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end
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def to_mom(compiler)
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raise "should not be momed #{self}"
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end
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# for loading into a lot, return the "slot_definition" that can be passed to
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# SlotLoad.
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def slot_definition(compiler)
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raise "not iplemented in #{self}"
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end
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end
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end
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require_relative "assign_statement"
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require_relative "array_statement"
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require_relative "basic_values"
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require_relative "block_statement"
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require_relative "class_statement"
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require_relative "hash_statement"
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require_relative "if_statement"
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require_relative "logical_statement"
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require_relative "local_assignment"
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require_relative "method_statement"
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require_relative "return_statement"
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require_relative "statements"
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require_relative "send_statement"
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require_relative "variables"
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require_relative "while_statement"
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require_relative "yield_statement"
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