],
)
+CStructureLiteralExpression = collections.namedtuple(
+ 'CStructureLiteralExpression',
+ [
+ 'field_count',
+ 'symbol_list_variable',
+ 'value_list_variable',
+ ],
+)
+
+CDotExpression = collections.namedtuple(
+ 'CDotExpression',
+ [
+ 'instance',
+ 'symbol',
+ 'symbol_list_index',
+ ],
+)
+
CNegationExpression = collections.namedtuple(
'CNegationExpression',
[
],
)
+CSymbolArrayVariableInitializationStatement = collections.namedtuple(
+ 'CSymbolArrayVariableInitializationStatement',
+ [
+ 'variable',
+ 'symbol_list',
+ 'symbol_list_indices',
+ ],
+)
+
CVariableInitializationStatement = collections.namedtuple(
'CVariableInitializationStatement',
[
'CIfElseStatement',
[
'condition_expression',
- 'if_statements',
- 'else_statements',
+ 'if_statement_list',
+ 'else_statement_list',
],
)
)
BUILTINS = {
- 'false': [],
- 'pow': ['math.h'],
- 'print': ['stdio.h'],
- 'true': [],
+ 'concatenate': [],
+ 'false': [],
+ 'pow': ['math.h'],
+ 'print': ['stdio.h'],
+ 'true': [],
}
def transform_variable_expression(accumulators, expression):
+ assert isinstance(expression, normalization.NormalVariableExpression)
return CVariableExpression(variable=expression.variable)
def transform_string_literal_expression(accumulators, expression):
],
)
-INFIX_OPERATOR_TO_DECLARATION = {
+FUR_INFIX_OPERATOR_TO_C_FUNCTION = {
+ '++': 'concatenate',
+}
+
+FUR_INFIX_OPERATOR_TO_C_INFIX_OPERATOR = {
'+': CInfixDeclaration(name='add', in_type='integer', out_type='integer', operator='+'),
'-': CInfixDeclaration(name='subtract', in_type='integer', out_type='integer', operator='-'),
'*': CInfixDeclaration(name='multiply', in_type='integer', out_type='integer', operator='*'),
}
def transform_comparison_level_expression(accumulators, expression):
- accumulators.operator_set.add(INFIX_OPERATOR_TO_DECLARATION[expression.operator])
+ accumulators.operator_set.add(FUR_INFIX_OPERATOR_TO_C_INFIX_OPERATOR[expression.operator])
# Transform expressions like 1 < 2 < 3 into expressions like 1 < 2 && 2 < 3
if isinstance(expression.left, parsing.FurInfixExpression) and expression.left.order == 'comparison_level':
name='and',
left=left,
right=CFunctionCallForFurInfixOperator(
- name=INFIX_OPERATOR_TO_DECLARATION[expression.operator].name,
+ name=FUR_INFIX_OPERATOR_TO_C_INFIX_OPERATOR[expression.operator].name,
left=middle,
right=right,
),
)
return CFunctionCallForFurInfixOperator(
- name=INFIX_OPERATOR_TO_DECLARATION[expression.operator].name,
+ name=FUR_INFIX_OPERATOR_TO_C_INFIX_OPERATOR[expression.operator].name,
left=transform_expression(accumulators, expression.left),
right=transform_expression(accumulators, expression.right),
)
+def transform_infix_operator_without_c_equivalent(accumulators, expression):
+ return CFunctionCallForFurInfixOperator(
+ name='concatenate',
+ left=transform_expression(accumulators, expression.left),
+ right=transform_expression(accumulators, expression.right),
+ )
def transform_infix_expression(accumulators, expression):
+ if expression.operator in FUR_INFIX_OPERATOR_TO_C_FUNCTION:
+ return transform_infix_operator_without_c_equivalent(accumulators, expression)
+
if expression.order == 'comparison_level':
return transform_comparison_level_expression(accumulators, expression)
- accumulators.operator_set.add(INFIX_OPERATOR_TO_DECLARATION[expression.operator])
+ accumulators.operator_set.add(FUR_INFIX_OPERATOR_TO_C_INFIX_OPERATOR[expression.operator])
return CFunctionCallForFurInfixOperator(
- name=INFIX_OPERATOR_TO_DECLARATION[expression.operator].name,
+ name=FUR_INFIX_OPERATOR_TO_C_INFIX_OPERATOR[expression.operator].name,
left=transform_expression(accumulators, expression.left),
right=transform_expression(accumulators, expression.right),
)
value=transform_expression(accumulators, expression.internal_expression),
)
+CListConstructExpression = collections.namedtuple(
+ 'CListConstructExpression',
+ [
+ 'allocate',
+ ],
+)
+
+CListAppendStatement = collections.namedtuple(
+ 'CListAppendStatement',
+ [
+ 'list_expression',
+ 'item_expression',
+ ],
+)
+
+CListGetExpression = collections.namedtuple(
+ 'CListGetExpression',
+ [
+ 'list_expression',
+ 'index_expression',
+ ],
+)
+
+def transform_structure_literal_expression(accumulators, expression):
+ return CStructureLiteralExpression(
+ field_count=expression.field_count,
+ symbol_list_variable=expression.symbol_list_variable,
+ value_list_variable=expression.value_list_variable,
+ )
+
+def transform_dot_expression(accumulators, expression):
+ try:
+ symbol_list_index = accumulators.symbol_list.index(expression.field)
+
+ except ValueError:
+ symbol_list_index = len(accumulators.symbol_list)
+ accumulators.symbol_list.append(expression.field)
+
+ return CDotExpression(
+ instance=transform_variable_expression(accumulators, expression.instance),
+ symbol=expression.field,
+ symbol_list_index=symbol_list_index,
+ )
+
+def transform_list_construct_expression(accumulators, expression):
+ return CListConstructExpression(allocate=expression.allocate)
+
+def transform_list_get_expression(accumulators, expression):
+ return CListGetExpression(
+ list_expression=transform_expression(accumulators, expression.list_expression),
+ index_expression=transform_expression(accumulators, expression.index_expression),
+ )
+
+def transform_list_append_statement(accumulators, expression):
+ return CListAppendStatement(
+ list_expression=transform_expression(accumulators, expression.list_expression),
+ item_expression=transform_expression(accumulators, expression.item_expression),
+ )
+
def transform_expression(accumulators, expression):
# TODO Clean up handlers for parsing expressions
return {
parsing.FurIntegerLiteralExpression: transform_integer_literal_expression,
parsing.FurNegationExpression: transform_negation_expression,
parsing.FurStringLiteralExpression: transform_string_literal_expression,
+ normalization.NormalDotExpression: transform_dot_expression,
normalization.NormalFunctionCallExpression: transform_function_call_expression,
normalization.NormalInfixExpression: transform_infix_expression,
normalization.NormalIntegerLiteralExpression: transform_integer_literal_expression,
+ normalization.NormalListConstructExpression: transform_list_construct_expression,
+ normalization.NormalListGetExpression: transform_list_get_expression,
normalization.NormalNegationExpression: transform_negation_expression,
+ normalization.NormalStructureLiteralExpression: transform_structure_literal_expression,
normalization.NormalStringLiteralExpression: transform_string_literal_expression,
normalization.NormalSymbolExpression: transform_symbol_expression,
normalization.NormalVariableExpression: transform_variable_expression,
def transform_if_else_statement(accumulators, statement):
return CIfElseStatement(
condition_expression=transform_expression(accumulators, statement.condition_expression),
- if_statements=tuple(transform_statement(accumulators, s) for s in statement.if_statements),
- else_statements=tuple(transform_statement(accumulators, s) for s in statement.else_statements),
+ if_statement_list=tuple(transform_statement(accumulators, s) for s in statement.if_statement_list),
+ else_statement_list=tuple(transform_statement(accumulators, s) for s in statement.else_statement_list),
)
def transform_array_variable_initialization_statement(accumulators, statement):
items=tuple(transform_expression(accumulators, i) for i in statement.items),
)
+def transform_symbol_array_variable_initialization_statement(accumulators, statement):
+ symbol_list_indices = []
+
+ for symbol in statement.symbol_list:
+ try:
+ symbol_list_index = accumulators.symbol_list.index(symbol)
+ except ValueError:
+ symbol_list_index = len(accumulators.symbol_list)
+ accumulators.symbol_list.append(symbol)
+
+ symbol_list_indices.append(symbol_list_index)
+
+ return CSymbolArrayVariableInitializationStatement(
+ variable=statement.variable,
+ symbol_list=statement.symbol_list,
+ symbol_list_indices=tuple(symbol_list_indices),
+ )
+
def transform_variable_initialization_statement(accumulators, statement):
return CVariableInitializationStatement(
variable=statement.variable,
normalization.NormalExpressionStatement: transform_expression_statement,
normalization.NormalFunctionDefinitionStatement: transform_function_definition_statement,
normalization.NormalIfElseStatement: transform_if_else_statement,
+ normalization.NormalListAppendStatement: transform_list_append_statement,
+ normalization.NormalSymbolArrayVariableInitializationStatement: transform_symbol_array_variable_initialization_statement,
normalization.NormalVariableInitializationStatement: transform_variable_initialization_statement,
normalization.NormalVariableReassignmentStatement: transform_variable_reassignment_statement,
}[type(statement)](accumulators, statement)
transform_statement(accumulators, statement) for statement in program.statement_list
]
- # This prevents warnings about normalized variables being entire C statements
- last_statement = statement_list[-1]
- if isinstance(last_statement, normalization.NormalExpressionStatement) and isinstance(last_statement.expression, normalization.NormalVariableExpression):
- del statement_list[-1]
-
standard_library_set = set()
for builtin in accumulators.builtin_set:
for standard_library in BUILTINS[builtin]: