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interpreter_show.py
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interpreter_show.py
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from tools import *
from keywords import *
from baseclass import *
"""
File containing an interpreter that print the content of the AST node.
"""
#####################
# Interpreter #
#####################
class InterpreterShow(NodeVisitor):
"""
OCaml Interpreter
Methods
-------
interpret()
Interpret the AST
Parameters
----------
AST_node:
an AST node that will be interpreted
"""
def __init__(self, AST_node):
self.AST_node = AST_node
self.indentation = 0
self.indentation_string = ' '
def print_ind(self, *arg):
print(self.indentation_string * self.indentation, *arg)
def ind(self):
self.indentation += 1
def deind(self):
self.indentation -= 1
def interpret(self):
return self.visit(self.AST_node)
# Nodes visitor #
def visit_Program(self, node):
self.print_ind('Program')
self.print_ind('{')
self.ind()
self.visit(node.block_node)
self.deind()
self.print_ind('}')
def visit_Block(self, node):
self.print_ind('Block')
self.print_ind('{')
self.ind()
self.visit(node.node)
self.deind()
self.print_ind('}')
def visit_Sequence(self, node):
self.print_ind('Sequence')
self.print_ind('{')
self.ind()
for command_node in node.commands_list[:-1]:
self.visit(command_node)
self.print_ind('-------')
self.visit(node.commands_list[-1])
self.deind()
self.print_ind('}')
def visit_Literal(self, node):
self.print_ind('Literal')
self.print_ind('{')
self.ind()
self.print_ind(node.value)
self.deind()
self.print_ind('}')
def visit_BinOp(self, node):
self.print_ind('BinOp', node.op_token.type)
self.print_ind('{')
self.ind()
self.visit(node.left_node)
self.print_ind(node.op_token.value)
self.visit(node.right_node)
self.deind()
self.print_ind('}')
def visit_UnaryOp(self, node):
self.print_ind('UnaryOp', node.op_token.type)
self.print_ind('{')
self.ind()
self.visit(node.right_node)
self.deind()
self.print_ind('}')
def visit_AssignmentStatement(self, node):
self.print_ind('AssignmentStatement')
self.print_ind('{')
self.ind()
self.print_ind('Assignments:')
self.ind()
for assignment_node in node.assignments_list:
self.visit(assignment_node)
self.deind()
self.print_ind('Block:')
self.visit(node.block_node)
self.deind()
self.print_ind('}')
def visit_AssignmentVariable(self, node):
self.print_ind('AssignmentVariable', node.var_name, "isref:", node.is_ref)
self.print_ind('{')
self.ind()
self.visit(node.value_node)
self.deind()
self.print_ind('}')
def visit_AssignmentFunction(self, node):
self.print_ind('AssignmentFunction', node.var_name, node.is_recursive)
self.print_ind('{')
self.ind()
self.visit(node.content_node)
self.deind()
self.print_ind('}')
def visit_Reassignment(self, node):
self.print_ind('Reassignment', node.var_name)
self.print_ind('{')
self.ind()
self.visit(node.new_value_node)
self.deind()
self.print_ind('}')
def visit_Variable(self, node):
self.print_ind('Variable', node.var_name)
self.print_ind('{')
self.ind()
self.print_ind(node.var_name, "getcontent", node.get_content)
self.deind()
self.print_ind('}')
def visit_PrintInt(self, node):
self.print_ind('PrintInt')
self.print_ind('{')
self.ind()
self.visit(node.node)
self.deind()
self.print_ind('}')
def visit_PrintString(self, node):
self.print_ind('PrintString')
def visit_Loop(self, node):
self.print_ind('Loop')
self.print_ind('{')
self.ind()
self.print_ind('Boolean operation')
self.visit(node.boolean_node)
self.print_ind('Block')
self.visit(node.block_node)
self.deind()
self.print_ind('}')
def visit_ConditionalStatement(self, node):
self.print_ind('ConditionalStatement')
self.print_ind('{')
self.ind()
self.print_ind('Condition')
self.visit(node.condition_node)
self.print_ind('Then')
self.visit(node.then_node)
self.print_ind('Else')
self.visit(node.else_node)
self.deind()
self.print_ind('}')
def visit_UnitNode(self, node):
self.print_ind('UnitNode')
def NothingClass(self, node):
self.print_ind('NothingClass')
def visit_Function(self, node):
self.print_ind('Function')
self.print_ind('{')
self.ind()
self.print_ind(f"parameters_list: {node.parameters_list}")
self.print_ind(f"parameters_types_list: {node.parameters_types_list}")
self.print_ind('Content function_body_node:')
self.ind()
self.visit(node.function_body_node)
self.deind()
self.deind()
self.print_ind('}')
def visit_FunctionCall(self, node):
self.print_ind('FunctionCall')
self.print_ind('{')
self.ind()
self.print_ind(f"var-name: {node.var_name}")
self.print_ind(f"arguments_nodes_list:")
self.ind()
for argument in node.arguments_nodes_list:
self.visit(argument)
self.print_ind(";")
self.deind()
self.deind()
self.print_ind('}')