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added if_statements

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This commit is contained in:
Nathan Braswell
2016-01-19 02:06:30 -05:00
parent 458299abe1
commit 4493dfd861
4 changed files with 37 additions and 5 deletions
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13
stdlib/ast_transformation.krak
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@@ -188,6 +188,8 @@ obj ast_transformation (Object) {
return transform_declaration_statement(node, scope)
} else if (name == "assignment_statement") {
return transform_assignment_statement(node, scope)
} else if (name == "if_statement") {
return transform_if_statement(node, scope)
} else if (name == "return_statement") {
return transform_return_statement(node, scope)
} else if (name == "function_call") {
@@ -287,6 +289,17 @@ obj ast_transformation (Object) {
var assignment = ast_assignment_statement_ptr(transform(get_node("factor", node), scope), transform(get_node("boolean_expression", node), scope))
return assignment
}
fun transform_if_statement(node: *tree<symbol>, scope: *ast_node): *ast_node {
var if_statement = ast_if_statement_ptr(transform_expression(get_node("boolean_expression", node), scope))
// one variable declarations might be in a code_block-less if statement
add_to_scope("~enclosing_scope", scope, if_statement)
var statements = transform_all(get_nodes("statement", node), if_statement)
if_statement->if_statement.then_part = statements[0]
// we have an else
if (statements.size == 2)
if_statement->if_statement.else_part = statements[1]
return if_statement
}
fun transform_return_statement(node: *tree<symbol>, scope: *ast_node): *ast_node {
return ast_return_statement_ptr(transform(node->children[0], scope))
}