48 lines
1.8 KiB
Ruby
48 lines
1.8 KiB
Ruby
module Phisol
|
|
class Compiler < AST::Processor
|
|
|
|
def initialize()
|
|
end
|
|
def handler_missing node
|
|
raise "No handler on_#{node.type}(node)"
|
|
end
|
|
# Compiling is the conversion of the AST into 2 things:
|
|
# - code (ie sequences of Instructions inside Blocks) carried by MethodSource
|
|
# - an object graph containing all the Methods, their classes and Constants
|
|
#
|
|
# Some compile methods just add code, some may add structure (ie Blocks) while
|
|
# others instantiate Class and Method objects
|
|
#
|
|
# Everything in ruby is an statement, ie returns a value. So the effect of every compile
|
|
# is that a value is put into the ReturnSlot of the current Message.
|
|
# The compile method (so every compile method) returns the value that it deposits.
|
|
#
|
|
# The process uses a visitor pattern (from AST::Processor) to dispatch according to the
|
|
# type the statement. So a s(:if xx) will become an on_if(node) call.
|
|
# This makes the dispatch extensible, ie Expressions may be added by external code,
|
|
# as long as matching compile methods are supplied too.
|
|
#
|
|
def self.compile statement
|
|
compiler = Compiler.new
|
|
compiler.process statement
|
|
end
|
|
|
|
end
|
|
end
|
|
|
|
require_relative "ast_helper"
|
|
require_relative "compiler/basic_values"
|
|
require_relative "compiler/call_site"
|
|
require_relative "compiler/class_field"
|
|
require_relative "compiler/collections"
|
|
require_relative "compiler/statement_list"
|
|
require_relative "compiler/field_def"
|
|
require_relative "compiler/field_access"
|
|
require_relative "compiler/function_definition"
|
|
require_relative "compiler/if_statement"
|
|
require_relative "compiler/class_statement"
|
|
require_relative "compiler/name_expression"
|
|
require_relative "compiler/operator_value"
|
|
require_relative "compiler/return_statement"
|
|
require_relative "compiler/while_statement"
|