We have a VERY SILL KRAKEN COMPILER\! simple_passthroughs are now emitted by the c_generator and test_compiler has been extended to write the C to a file and then call cc on it, so the self-hosted Kraken compiler can compile its very first thing\! (though that thing is a hello world C program written entirely in a simple_passthrough...

stdlib/ast_nodes.krak

@@ -53,6 +53,12 @@ fun ast_translation_unit_ptr(name: string): *ast_node {
     ptr->copy_construct(&ast_node::translation_unit(obj_var))
     return ptr
 }
+fun is_translation_unit(node: *ast_node): bool {
+    match(*node) {
+        ast_node::translation_unit(backing) return true
+    }
+    return false
+}
 obj translation_unit (Object) {
     var scope: map<string, vector<*ast_node>>
     var children: vector<*ast_node>
@@ -87,6 +93,12 @@ fun ast_import_ptr(name: string): *ast_node {
     ptr->copy_construct(&ast_node::import(to_ret))
     return ptr
 }
+fun is_import(node: *ast_node): bool {
+    match(*node) {
+        ast_node::import(backing) return true
+    }
+    return false
+}
 obj import (Object) {
     var scope: map<string, vector<*ast_node>>
     var imported: set<string>
@@ -124,6 +136,12 @@ fun ast_identifier_ptr(name: string): *ast_node {
     ptr->copy_construct(&ast_node::identifier(to_ret))
     return ptr
 }
+fun is_identifier(node: *ast_node): bool {
+    match(*node) {
+        ast_node::identifier(backing) return true
+    }
+    return false
+}
 obj identifier (Object) {
     var name: string
     var scope: map<string, vector<*ast_node>>
@@ -154,6 +172,12 @@ fun ast_type_def_ptr(name: string): *ast_node {
     ptr->copy_construct(&ast_node::type_def(to_ret))
     return ptr
 }
+fun is_type_def(node: *ast_node): bool {
+    match(*node) {
+        ast_node::type_def(backing) return true
+    }
+    return false
+}
 obj type_def (Object) {
     var scope: map<string, vector<*ast_node>>
     var name: string
@@ -184,6 +208,12 @@ fun ast_adt_def_ptr(name: string): *ast_node {
     ptr->copy_construct(&ast_node::adt_def(to_ret))
     return ptr
 }
+fun is_adt_def(node: *ast_node): bool {
+    match(*node) {
+        ast_node::adt_def(backing) return true
+    }
+    return false
+}
 obj adt_def (Object) {
     var scope: map<string, vector<*ast_node>>
     var name: string
@@ -214,6 +244,12 @@ fun ast_function_ptr(): *ast_node {
     ptr->copy_construct(&ast_node::function(to_ret))
     return ptr
 }
+fun is_function(node: *ast_node): bool {
+    match(*node) {
+        ast_node::function(backing) return true
+    }
+    return false
+}
 obj function (Object) {
     var scope: map<string, vector<*ast_node>>
     fun construct(): *function  {
@@ -240,6 +276,12 @@ fun ast_code_block_ptr(): *ast_node {
     ptr->copy_construct(&ast_node::code_block(to_ret))
     return ptr
 }
+fun is_code_block(node: *ast_node): bool {
+    match(*node) {
+        ast_node::code_block(backing) return true
+    }
+    return false
+}
 obj code_block (Object) {
     var scope: map<string, vector<*ast_node>>
     var children: vector<*ast_node>
@@ -270,6 +312,12 @@ fun ast_statement_ptr(): *ast_node {
     ptr->copy_construct(&ast_node::statement(to_ret))
     return ptr
 }
+fun is_statement(node: *ast_node): bool {
+    match(*node) {
+        ast_node::statement(backing) return true
+    }
+    return false
+}
 obj statement (Object) {
     var scope: map<string, vector<*ast_node>>
     var child: *ast_node
@@ -298,6 +346,12 @@ fun ast_if_statement_ptr(): *ast_node {
     ptr->copy_construct(&ast_node::if_statement(to_ret))
     return ptr
 }
+fun is_if_statement(node: *ast_node): bool {
+    match(*node) {
+        ast_node::if_statement(backing) return true
+    }
+    return false
+}
 obj if_statement (Object) {
     var scope: map<string, vector<*ast_node>>
     fun construct(): *if_statement  {
@@ -324,6 +378,12 @@ fun ast_match_statement_ptr(): *ast_node {
     ptr->copy_construct(&ast_node::match_statement(to_ret))
     return ptr
 }
+fun is_match_statement(node: *ast_node): bool {
+    match(*node) {
+        ast_node::match_statement(backing) return true
+    }
+    return false
+}
 obj match_statement (Object) {
     var scope: map<string, vector<*ast_node>>
     fun construct(): *match_statement  {
@@ -350,6 +410,12 @@ fun ast_case_statement_ptr(): *ast_node {
     ptr->copy_construct(&ast_node::case_statement(to_ret))
     return ptr
 }
+fun is_case_statement(node: *ast_node): bool {
+    match(*node) {
+        ast_node::case_statement(backing) return true
+    }
+    return false
+}
 obj case_statement (Object) {
     var scope: map<string, vector<*ast_node>>
     fun construct(): *case_statement  {
@@ -376,6 +442,12 @@ fun ast_while_loop_ptr(): *ast_node {
     ptr->copy_construct(&ast_node::while_loop(to_ret))
     return ptr
 }
+fun is_while_loop(node: *ast_node): bool {
+    match(*node) {
+        ast_node::while_loop(backing) return true
+    }
+    return false
+}
 obj while_loop (Object) {
     var scope: map<string, vector<*ast_node>>
     fun construct(): *while_loop  {
@@ -402,6 +474,12 @@ fun ast_for_loop_ptr(): *ast_node {
     ptr->copy_construct(&ast_node::for_loop(to_ret))
     return ptr
 }
+fun is_for_loop(node: *ast_node): bool {
+    match(*node) {
+        ast_node::for_loop(backing) return true
+    }
+    return false
+}
 obj for_loop (Object) {
     var scope: map<string, vector<*ast_node>>
     fun construct(): *for_loop  {
@@ -428,6 +506,12 @@ fun ast_return_statement_ptr(): *ast_node {
     ptr->copy_construct(&ast_node::return_statement(to_ret))
     return ptr
 }
+fun is_return_statement(node: *ast_node): bool {
+    match(*node) {
+        ast_node::return_statement(backing) return true
+    }
+    return false
+}
 obj return_statement (Object) {
     var scope: map<string, vector<*ast_node>>
     fun construct(): *return_statement  {
@@ -454,6 +538,12 @@ fun ast_break_statement_ptr(): *ast_node {
     ptr->copy_construct(&ast_node::break_statement(to_ret))
     return ptr
 }
+fun is_break_statement(node: *ast_node): bool {
+    match(*node) {
+        ast_node::break_statement(backing) return true
+    }
+    return false
+}
 obj break_statement (Object) {
     var scope: map<string, vector<*ast_node>>
     fun construct(): *break_statement  {
@@ -480,6 +570,12 @@ fun ast_continue_statement_ptr(): *ast_node {
     ptr->copy_construct(&ast_node::continue_statement(to_ret))
     return ptr
 }
+fun is_continue_statement(node: *ast_node): bool {
+    match(*node) {
+        ast_node::continue_statement(backing) return true
+    }
+    return false
+}
 obj continue_statement (Object) {
     var scope: map<string, vector<*ast_node>>
     fun construct(): *continue_statement  {
@@ -506,6 +602,12 @@ fun ast_defer_statement_ptr(): *ast_node {
     ptr->copy_construct(&ast_node::defer_statement(to_ret))
     return ptr
 }
+fun is_defer_statement(node: *ast_node): bool {
+    match(*node) {
+        ast_node::defer_statement(backing) return true
+    }
+    return false
+}
 obj defer_statement (Object) {
     var scope: map<string, vector<*ast_node>>
     fun construct(): *defer_statement  {
@@ -532,6 +634,12 @@ fun ast_assignment_statement_ptr(): *ast_node {
     ptr->copy_construct(&ast_node::assignment_statement(to_ret))
     return ptr
 }
+fun is_assignment_statement(node: *ast_node): bool {
+    match(*node) {
+        ast_node::assignment_statement(backing) return true
+    }
+    return false
+}
 obj assignment_statement (Object) {
     var scope: map<string, vector<*ast_node>>
     fun construct(): *assignment_statement  {
@@ -558,6 +666,12 @@ fun ast_declaration_statement_ptr(): *ast_node {
     ptr->copy_construct(&ast_node::declaration_statement(to_ret))
     return ptr
 }
+fun is_declaration_statement(node: *ast_node): bool {
+    match(*node) {
+        ast_node::declaration_statement(backing) return true
+    }
+    return false
+}
 obj declaration_statement (Object) {
     var scope: map<string, vector<*ast_node>>
     fun construct(): *declaration_statement  {
@@ -584,6 +698,12 @@ fun ast_if_comp_ptr(): *ast_node {
     ptr->copy_construct(&ast_node::if_comp(to_ret))
     return ptr
 }
+fun is_if_comp(node: *ast_node): bool {
+    match(*node) {
+        ast_node::if_comp(backing) return true
+    }
+    return false
+}
 obj if_comp (Object) {
     var wanted_generator: string
     var statement: *ast_node
@@ -612,6 +732,12 @@ fun ast_simple_passthrough_ptr(): *ast_node {
     ptr->copy_construct(&ast_node::simple_passthrough(to_ret))
     return ptr
 }
+fun is_simple_passthrough(node: *ast_node): bool {
+    match(*node) {
+        ast_node::simple_passthrough(backing) return true
+    }
+    return false
+}
 obj simple_passthrough (Object) {
     var scope: map<string, vector<*ast_node>>
     var passthrough_str: string
@@ -642,6 +768,12 @@ fun ast_function_call_ptr(): *ast_node {
     ptr->copy_construct(&ast_node::function_call(to_ret))
     return ptr
 }
+fun is_function_call(node: *ast_node): bool {
+    match(*node) {
+        ast_node::function_call(backing) return true
+    }
+    return false
+}
 obj function_call (Object) {
     var scope: map<string, vector<*ast_node>>
     fun construct(): *function_call  {
@@ -668,6 +800,12 @@ fun ast_value_ptr(): *ast_node {
     ptr->copy_construct(&ast_node::value(to_ret))
     return ptr
 }
+fun is_value(node: *ast_node): bool {
+    match(*node) {
+        ast_node::value(backing) return true
+    }
+    return false
+}
 obj value (Object) {
     var scope: map<string, vector<*ast_node>>
     fun construct(): *value  {

stdlib/ast_transformation.krak

@@ -80,6 +80,8 @@ obj ast_transformation (Object) {
             return transform_if_comp(node, scope)
         } else if (name == "simple_passthrough") {
             return transform_simple_passthrough(node, scope)
+        } else if (name == "statement") {
+            return transform_statement(node, scope)
         }
         print("FAILED TO TRANSFORM: "); println(concat_symbol_tree(node))
         return null<ast_node>()
@@ -107,7 +109,7 @@ obj ast_transformation (Object) {
     fun transform_simple_passthrough(node: *tree<symbol>, scope: *ast_node): *ast_node {
         var new_passthrough = ast_simple_passthrough_ptr()
         // setup passthrough params and string
-        new_passthrough->simple_passthrough.passthrough_str = concat_symbol_tree(get_node("triple_quoted_string", node))
+        new_passthrough->simple_passthrough.passthrough_str = concat_symbol_tree(get_node("triple_quoted_string", node)).slice(3,-4)
         return new_passthrough
     }
     fun transform_statement(node: *tree<symbol>, scope: *ast_node): *ast_node {

stdlib/c_generator.krak

@@ -20,7 +20,7 @@ obj c_generator (Object) {
     }
     fun destruct() {
     }
-    fun generate(name_ast_map: map<string, pair<*tree<symbol>,*ast_node>>): pair<string,string> {
+    fun generate_c(name_ast_map: map<string, pair<*tree<symbol>,*ast_node>>): pair<string,string> {
         var linker_string:string = ""
         var prequal: string = "#include <stdbool.h>\n#include <stdlib.h>\n#include <stdio.h>\n"
         var plain_typedefs: string = ""
@@ -40,8 +40,12 @@ obj c_generator (Object) {
             // assert translation_unit?
             tree_pair.second->translation_unit.children.for_each(fun(child: *ast_node) {
                 match (*child) {
-                    ast_node::if_comp(backing) top_level_c_passthrough += "got an if_comp\n"
+                    // should really check the genrator
-                    ast_node::simple_passthrough(backing) top_level_c_passthrough += "got a simple_passthrough\n"
+                    ast_node::if_comp(backing) {
+                        if (is_simple_passthrough(backing.statement->statement.child))
+                            top_level_c_passthrough += generate_simple_passthrough(backing.statement->statement.child)
+                    }
+                    ast_node::simple_passthrough(backing) top_level_c_passthrough += generate_simple_passthrough(child)
                 }
             })
         })
@@ -49,6 +53,16 @@ obj c_generator (Object) {
         var function_definitions: string = ""
         return make_pair(prequal+plain_typedefs+top_level_c_passthrough+variable_extern_declarations+structs+function_typedef_string_pre+function_typedef_string+function_prototypes+variable_declarations+function_definitions, linker_string)
     }
+    fun generate_simple_passthrough(node: *ast_node): string {
+        // deal with all the passthrough params
+        return node->simple_passthrough.passthrough_str
+    }
+    // for now, anyway
+    fun generate(node: *ast_node): string {
+        match (*node) {
+            ast_node::simple_passthrough(backing) return generate_simple_passthrough(node)
+        }
+    }
 }
 
 

stdlib/os.krak

@@ -0,0 +1,19 @@
+import string:*
+import mem:*
+
+fun system(call_string: string):int {
+    var c_call_string = call_string.toCharArray()
+    var result  = system(c_call_string)
+    delete(c_call_string)
+    return result
+}
+fun system(call_string: *char): int {
+    __if_comp__ __C__ {
+        simple_passthrough(call_string::) """
+            return system(call_string);
+        """
+    }
+}
+
+
+

tests/test_compiler.krak

@@ -8,6 +8,7 @@ import symbol:*
 import tree:*
 import serialize:*
 import c_generator:*
+import os:*
 
 fun main():int {
 
@@ -79,9 +80,11 @@ fun main():int {
     var importer.construct(parse, ast_pass): importer
     importer.import(kraken_file_name)
     var c_generator.construct(): c_generator
-    var c_output_pair = c_generator.generate(importer.name_ast_map)
+    var c_output_pair = c_generator.generate_c(importer.name_ast_map)
-    write_file(kraken_file_name + ".c", c_output_pair.first)
+    var kraken_c_output_name = kraken_file_name + ".c"
+    write_file(kraken_c_output_name, c_output_pair.first)
     println(string("linker string: ") + c_output_pair.second)
+    system(string("cc -g -O3 -std=c99 ") + kraken_c_output_name + " -o " + kraken_file_name + ".exe")
 
     return 0
 }

tests/to_import.krak

@@ -1,6 +1,10 @@
 
 __if_comp__ __C__ simple_passthrough """
 	#include <stdio.h>
+    int main() {
+        printf("hello world! (of selfhosting! (silly selfhosting for now))\n");
+        return 0;
+    }
 """
 var a = 1
 var b = 2