],
)
+CFunctionDeclaration = collections.namedtuple(
+ 'CFunctionDeclaration',
+ [
+ 'name',
+ ],
+)
+
+CFunctionDefinition = collections.namedtuple(
+ 'CFunctionDefinition',
+ [
+ 'name',
+ 'statement_list',
+ ],
+)
+
CProgram = collections.namedtuple(
'CProgram',
[
'builtin_set',
+ 'function_definition_list',
'statements',
'standard_libraries',
'string_literal_list',
def transform_variable_expression(accumulators, expression):
return CVariableExpression(variable=expression.variable)
+def transform_string_literal(accumulators, expression):
+ value = expression.value
+
+ try:
+ index = accumulators.string_literal_list.index(value)
+ except ValueError:
+ index = len(accumulators.string_literal_list)
+ accumulators.string_literal_list.append(value)
+
+ return CStringLiteral(index=index, value=value)
+
+def transform_symbol_expression(accumulators, expression):
+ if expression.value in ['true', 'false']:
+ return CConstantExpression(value=expression.value)
+
+ if expression.value not in accumulators.symbol_list:
+ symbol_list.append(expression.value)
+
+ return CSymbolExpression(
+ symbol=expression.value,
+ symbol_list_index=accumulators.symbol_list.index(expression.value),
+ )
+
def transform_infix_expression(accumulators, expression):
if expression.order == 'comparison_level':
return transform_comparison_level_expression(accumulators, expression)
right=transform_expression(accumulators, expression.right),
)
-def transform_expression(accumulators, expression):
- if isinstance(expression, parsing.FurParenthesizedExpression):
- # Parentheses can be removed because everything in the C output is explicitly parenthesized
- return transform_expression(accumulators, expression.internal)
-
- if isinstance(expression, parsing.FurNegationExpression):
- return transform_negation_expression(accumulators, expression)
-
- if isinstance(expression, parsing.FurFunctionCallExpression):
- return transform_function_call_expression(accumulators, expression)
+def transform_integer_literal_expression(accumulators, expression):
+ return CIntegerLiteral(value=expression.value)
- if isinstance(expression, parsing.FurSymbolExpression):
- if expression.value in ['true', 'false']:
- return CConstantExpression(value=expression.value)
+def transform_parenthesized_expression(accumulators, expression):
+ # Parentheses can be removed because everything in the C output is explicitly parenthesized
+ return transform_expression(accumulators, expression.internal)
- if expression.value not in accumulators.symbol_list:
- symbol_list.append(expression.value)
-
- return CSymbolExpression(
- symbol=expression.value,
- symbol_list_index=accumulators.symbol_list.index(expression.value),
- )
-
- if isinstance(expression, parsing.FurStringLiteralExpression):
- value = expression.value
-
- try:
- index = accumulators.string_literal_list.index(value)
- except ValueError:
- index = len(accumulators.string_literal_list)
- accumulators.string_literal_list.append(value)
-
- return CStringLiteral(index=index, value=value)
-
- LITERAL_TYPE_MAPPING = {
- parsing.FurIntegerLiteralExpression: CIntegerLiteral,
- }
-
- if type(expression) in LITERAL_TYPE_MAPPING:
- return LITERAL_TYPE_MAPPING[type(expression)](value=expression.value)
-
- # TODO Handle all possible types in this form
+def transform_expression(accumulators, expression):
+ # TODO Clean up handlers for parsing expressions
return {
- parsing.FurInfixExpression: transform_infix_expression, # TODO Shouldn't need this
+ parsing.FurFunctionCallExpression: transform_function_call_expression,
+ parsing.FurInfixExpression: transform_infix_expression,
+ parsing.FurIntegerLiteralExpression: transform_integer_literal_expression,
+ parsing.FurNegationExpression: transform_negation_expression,
+ parsing.FurParenthesizedExpression: transform_parenthesized_expression,
+ parsing.FurStringLiteralExpression: transform_string_literal,
+ parsing.FurSymbolExpression: transform_symbol_expression,
normalization.NormalFunctionCallExpression: transform_function_call_expression,
normalization.NormalInfixExpression: transform_infix_expression,
normalization.NormalNegationExpression: transform_negation_expression,
# TODO Check that the builtin is actually callable
accumulators.builtin_set.add(function_call.function.value)
- # TODO Use the symbol from SYMBOL LIST
- return CFunctionCallExpression(
- name=function_call.function.value,
- argument_count=function_call.argument_count,
- argument_items=transform_expression(accumulators, function_call.argument_items),
- )
-
- raise Exception()
+ # TODO Use the symbol from SYMBOL LIST
+ return CFunctionCallExpression(
+ name=function_call.function.value,
+ argument_count=function_call.argument_count,
+ argument_items=transform_expression(accumulators, function_call.argument_items),
+ )
def transform_expression_statement(accumulators, statement):
+ # TODO At some point we can verify that all expression types are supported and just call transform_expression
expression = {
parsing.FurFunctionCallExpression: transform_function_call_expression,
+ parsing.FurInfixExpression: transform_expression,
+ parsing.FurIntegerLiteralExpression: transform_expression,
+ parsing.FurSymbolExpression: transform_expression,
normalization.NormalFunctionCallExpression: transform_function_call_expression,
+ normalization.NormalVariableExpression: transform_expression,
}[type(statement.expression)](accumulators, statement.expression)
return CExpressionStatement(
expression=transform_expression(accumulators, statement.expression),
)
+def transform_function_definition_statement(accumulators, statement):
+ # TODO Allow defining the same function in different contexts
+ if any(fd.name == statement.name for fd in accumulators.function_definition_list):
+ raise Exception('A function with name "{}" already exists'.format(statement.name))
+
+ accumulators.function_definition_list.append(CFunctionDefinition(
+ name=statement.name,
+ statement_list=tuple(transform_statement(accumulators, s) for s in statement.statement_list)
+ ))
+
+ return CFunctionDeclaration(name=statement.name)
+
def transform_statement(accumulators, statement):
return {
parsing.FurAssignmentStatement: transform_symbol_assignment_statement,
parsing.FurExpressionStatement: transform_expression_statement,
+ normalization.NormalArrayVariableInitializationStatement: transform_array_variable_initialization_statement,
normalization.NormalExpressionStatement: transform_expression_statement,
+ normalization.NormalFunctionDefinitionStatement: transform_function_definition_statement,
normalization.NormalIfElseStatement: transform_if_else_statement,
- normalization.NormalArrayVariableInitializationStatement: transform_array_variable_initialization_statement,
normalization.NormalVariableInitializationStatement: transform_variable_initialization_statement,
normalization.NormalVariableReassignmentStatement: transform_variable_reassignment_statement,
}[type(statement)](accumulators, statement)
'Accumulators',
[
'builtin_set',
+ 'function_definition_list',
+ 'operator_set',
'symbol_list',
'string_literal_list',
],
def transform(program):
accumulators = Accumulators(
builtin_set=set(),
+ function_definition_list=[],
+ operator_set=set(),
symbol_list=[],
string_literal_list=[],
)
return CProgram(
builtin_set=accumulators.builtin_set,
+ function_definition_list=accumulators.function_definition_list,
statements=statement_list,
standard_libraries=standard_library_set,
string_literal_list=accumulators.string_literal_list,
projects / fur / blobdiff