A pretty featureful commit:

[fur] / transformation.py

diff --git a/transformation.py b/transformation.py
index 9ba0c0a..1fe7dc9 100644 (file)
--- a/transformation.py
+++ b/transformation.py
@@ -2,6 +2,13 @@ import collections
 
 import parsing
 
+CIntegerLiteral = collections.namedtuple(
+    'CIntegerLiteral',
+    [
+        'value',
+    ],
+)
+
 CStringLiteral = collections.namedtuple(
     'CStringLiteral',
     [
@@ -9,8 +16,48 @@ CStringLiteral = collections.namedtuple(
     ],
 )
 
-CFunctionCallStatement = collections.namedtuple(
-    'CFunctionCallStatement',
+CAdditionExpression = collections.namedtuple(
+    'CAdditionExpression',
+    [
+        'left',
+        'right',
+    ],
+)
+
+CSubtractionExpression = collections.namedtuple(
+    'CSubtractionExpression',
+    [
+        'left',
+        'right',
+    ],
+)
+
+CMultiplicationExpression = collections.namedtuple(
+    'CMultiplicationExpression',
+    [
+        'left',
+        'right',
+    ],
+)
+
+CIntegerDivisionExpression = collections.namedtuple(
+    'CIntegerDivisionExpression',
+    [
+        'left',
+        'right',
+    ],
+)
+
+CModularDivisionExpression = collections.namedtuple(
+    'CModularDivisionExpression',
+    [
+        'left',
+        'right',
+    ],
+)
+
+CFunctionCallExpression = collections.namedtuple(
+    'CFunctionCallExpression',
     [
         'name',
         'arguments',
@@ -27,31 +74,52 @@ CProgram = collections.namedtuple(
 )
 
 BUILTINS = {
-    'print': ['stdio.h.'],
+    'pow':      ['math.h'],
+    'print':    ['stdio.h'],
 }
 
-def transform_argument(builtin_dependencies, argument):
-    if isinstance(argument, parsing.StringLiteral):
-        return CStringLiteral(value=argument.value)
-
-    raise Exception()
+def transform_expression(builtin_dependencies, expression):
+    if isinstance(expression, parsing.FurFunctionCallExpression):
+        return transform_function_call_expression(builtin_dependencies, expression)
+
+    LITERAL_TYPE_MAPPING = {
+        parsing.FurIntegerLiteralExpression: CIntegerLiteral,
+        parsing.FurStringLiteralExpression: CStringLiteral,
+    }
+
+    if type(expression) in LITERAL_TYPE_MAPPING:
+        return LITERAL_TYPE_MAPPING[type(expression)](value=expression.value)
+
+    INFIX_TYPE_MAPPING = {
+        parsing.FurAdditionExpression: CAdditionExpression,
+        parsing.FurSubtractionExpression: CSubtractionExpression,
+        parsing.FurMultiplicationExpression: CMultiplicationExpression,
+        parsing.FurIntegerDivisionExpression: CIntegerDivisionExpression,
+        parsing.FurModularDivisionExpression: CModularDivisionExpression,
+    }
+
+    return INFIX_TYPE_MAPPING[type(expression)](
+        left=transform_expression(builtin_dependencies, expression.left),
+        right=transform_expression(builtin_dependencies, expression.right),
+    )
 
-def transform_function_call_statement(builtin_dependencies, function_call):
+def transform_function_call_expression(builtin_dependencies, function_call):
     if function_call.name in BUILTINS.keys():
         builtin_dependencies.add(function_call.name)
 
-        return CFunctionCallStatement(
+        return CFunctionCallExpression(
             name='builtin$' + function_call.name,
-            arguments=tuple(transform_argument(builtin_dependencies, arg) for arg in function_call.arguments),
+            arguments=tuple(transform_expression(builtin_dependencies, arg) for arg in function_call.arguments),
         )
 
     raise Exception()
 
-
-def transform(function_call):
+def transform(program):
     builtins = set()
 
-    statement = transform_function_call_statement(builtins, function_call)
+    c_statements = [
+        transform_function_call_expression(builtins, statement) for statement in program.statement_list
+    ]
 
     standard_libraries = set()
     for builtin in builtins:
@@ -60,7 +128,7 @@ def transform(function_call):
 
     return CProgram(
         builtins=builtins,
-        statements=[statement],
+        statements=c_statements,
         standard_libraries=standard_libraries,
     )