X-Git-Url: https://code.kerkeslager.com/?a=blobdiff_plain;f=generation.py;h=3ad3c0d81ba753829fffbb570ab7714538585a04;hb=c9f47106ccf806533783a551b5c51d9280869635;hp=816ebc900714ce4399541351949eaf6dd53d827c;hpb=ce4ef136c1e6585c3e780932f3411b71a78c272b;p=fur

diff --git a/generation.py b/generation.py
index 816ebc9..3ad3c0d 100644
--- a/generation.py
+++ b/generation.py
@@ -28,6 +28,9 @@ def generate_symbol_expression(c_symbol_expression):
         c_symbol_expression.symbol,
     )
 
+def generate_variable_expression(expression):
+    return expression.variable
+
 def generate_expression(expression):
     if isinstance(expression, transformation.CNegationExpression):
         return generate_negation_expression(expression)
@@ -46,47 +49,120 @@ def generate_expression(expression):
         return LITERAL_TYPE_MAPPING[type(expression)](expression)
 
     if isinstance(expression, transformation.CFunctionCallForFurInfixOperator):
-        return 'builtin${}({}, {})'.format(
+        return 'operator${}({}, {})'.format(
             expression.name,
             generate_expression(expression.left),
             generate_expression(expression.right),
         )
 
-    raise Exception('Could not handle expresssion "{}"'.format(expression))
+    return {
+        transformation.CVariableExpression: generate_variable_expression,
+    }[type(expression)](expression)
 
 def generate_negation_expression(c_negation_expression):
-    return 'builtin$negate({})'.format(
+    return 'operator$negate({})'.format(
         generate_expression(c_negation_expression.value)
     )
 
-def generate_function_call(c_function_call):
-    return '{}({})'.format(
-        c_function_call.name,
-        ', '.join(generate_expression(argument) for argument in c_function_call.arguments),
+def generate_function_call(function_call):
+    return 'Environment_get(environment, "{}").instance.closure(environment, {}, {})'.format(
+        function_call.name,
+        function_call.argument_count,
+        # TODO This is just a single item containing a reference to the items list--make that clearer
+        generate_expression(function_call.argument_items),
     )
 
-def generate_expression_statement(c_function_call_statement):
+def generate_expression_statement(statement):
+    # TODO Do this at an earlier pass
+    if isinstance(statement.expression, transformation.CVariableExpression):
+        return '';
+
     # TODO Do we need to garbage collect the results of arbitrary statements?
-    return '{};'.format(generate_expression(c_function_call_statement))
+    return '{};'.format(generate_expression(statement.expression))
 
-def generate_assignment_statement(c_assignment_statement):
+def generate_symbol_assignment_statement(c_assignment_statement):
     return 'Environment_set(environment, SYMBOL_LIST[{}] /* symbol: {} */, {});'.format(
         c_assignment_statement.target_symbol_list_index,
         c_assignment_statement.target,
         generate_expression(c_assignment_statement.expression),
     )
 
-def generate_statement(statement):
-    if isinstance(statement, transformation.CAssignmentStatement):
-        return generate_assignment_statement(statement)
+def generate_array_variable_initialization_statement(statement):
+    return 'Object {}[] = {{ {} }};'.format(
+        statement.variable,
+        ', '.join(generate_expression(i) for i in statement.items),
+    )
+
+def generate_variable_initialization_statement(statement):
+    return 'Object {} = {};'.format(
+        statement.variable,
+        generate_expression(statement.expression),
+    )
+
+def generate_variable_reassignment_statement(statement):
+    return '{} = {};'.format(
+        statement.variable,
+        generate_expression(statement.expression),
+    )
+
+
+def indent(s):
+    return '\n'.join(' ' * 2 + l for l in s.split('\n'))
 
-    return generate_expression_statement(statement)
+def generate_if_else_statement(statement):
+    # TODO Check that the argument is boolean
+    condition_expression = '{}.instance.boolean'.format(
+        generate_expression(statement.condition_expression),
+    )
+
+    if len(statement.if_statements) == 0:
+        condition_expression = '!({})'.format(condition_expression)
+        if_statements = statement.else_statements
+        else_statements = ()
+    else:
+        if_statements = statement.if_statements
+        else_statements = statement.else_statements
+
+    generated_if_clause = 'if({})'.format(condition_expression)
+
+    if len(if_statements) == 0:
+        generated_if_statements = ';'
+    else:
+        generated_if_statements = indent('\n{{\n{}\n}}'.format(
+            indent('\n'.join(generate_statement(s) for s in if_statements)),
+        ))
+
+    if len(else_statements) == 0:
+        generated_else_statements = ''
+    else:
+        generated_else_statements = indent('\nelse\n{{\n{}\n}}'.format(
+            indent('\n'.join(generate_statement(s) for s in else_statements)),
+        ))
+
+    return generated_if_clause + generated_if_statements + generated_else_statements
+
+def generate_function_declaration(statement):
+    return 'Environment_set(environment, "{}", user${});'.format(statement.name, statement.name)
+
+def generate_statement(statement):
+    return {
+        transformation.CExpressionStatement: generate_expression_statement,
+        transformation.CFunctionDeclaration: generate_function_declaration,
+        transformation.CIfElseStatement: generate_if_else_statement,
+        transformation.CSymbolAssignmentStatement: generate_symbol_assignment_statement,
+        transformation.CArrayVariableInitializationStatement: generate_array_variable_initialization_statement,
+        transformation.CVariableInitializationStatement: generate_variable_initialization_statement,
+        transformation.CVariableReassignmentStatement: generate_variable_reassignment_statement,
+    }[type(statement)](statement)
 
 def generate(program):
     template = ENV.get_template('program.c')
     return template.render(
-        builtins=list(sorted(program.builtin_set)),
-        statements=[generate_statement(statement) for statement in program.statements],
+        builtins=tuple(sorted(program.builtin_set)),
+        function_definition_list=program.function_definition_list,
+        generate_statement=generate_statement,
+        infix_declarations=program.operator_declarations,
+        statements=program.statements,
         standard_libraries=list(sorted(program.standard_libraries)),
         string_literal_list=program.string_literal_list,
         symbol_list=program.symbol_list,