Class: Layo::Interpreter

Inherits:
BaseInterpreter show all
Defined in:
lib/layo/interpreter.rb

Instance Attribute Summary

Attributes inherited from BaseInterpreter

#input, #output

Instance Method Summary collapse

Methods inherited from BaseInterpreter

#call_func, #cast, #create_variable_table, #eval_assignment_stmt, #eval_binary_expr, #eval_block, #eval_break_stmt, #eval_cast_expr, #eval_cast_stmt, #eval_condition_stmt, #eval_constant_expr, #eval_declaration_stmt, #eval_expr, #eval_expression_stmt, #eval_function_expr, #eval_input_stmt, #eval_loop_stmt, #eval_nary_expr, #eval_print_stmt, #eval_return_stmt, #eval_switch_stmt, #eval_unary_expr, #eval_variable_expr, #init_tables, #initialize, #interpolate_string, #with_guard

Constructor Details

This class inherits a constructor from Layo::BaseInterpreter

Instance Method Details

#eval_function_stmt(stmt) ⇒ Object

Don’t do anything because function table is already ready



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# File 'lib/layo/interpreter.rb', line 23

def eval_function_stmt(stmt); end

#eval_program(program) ⇒ Object 



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# File 'lib/layo/interpreter.rb', line 18

def eval_program(program)
  with_guard { eval_block(program.block) }
end

#interpret(program) ⇒ Object

Interprets program given as an AST node



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# File 'lib/layo/interpreter.rb', line 4

def interpret(program)
  # We should gather all function definitions along with their bodies
  # beforehand so we could call them wherever a call appears
  init_tables
  program.block.each do |statement|
    if statement.type == 'function'
      @functions[statement.name] = {
        args: statement.args, block: statement.block
      }
    end
  end
  eval_program(program)
end