Ifdefs, moved semantic to check, fixed error reporting for builtins

Codegen.jai

@@ -11,16 +11,13 @@ Output_Language :: enum {
 	HLSL;
 	GLSL; // @Incomplete
 	MLSL; // @Incomplete
+	// SPIRV; // @Incomplete: Should we do this?
 }
 
 Codegen_State :: struct {
 	path : string;
 	
-	// scope_stack    : Scope_Stack;
 	current_scope : Scope_Handle;
-	
-	// type_variables : []Type_Variable;
-	// root : *AST_Node;
 
 	output_language : Output_Language;
 
@@ -29,14 +26,6 @@ Codegen_State :: struct {
 	result : *Compiler_Context;
 }
 
-// Codegen_Result :: struct {
-// 	messages : [..]Compiler_Message;
-
-// 	had_error : bool;
-
-// 	result_text : string; // @Incomplete(nb): Result for now, should likely be far more sophisticated.
-// }
-
 Reserved_HLSL_Words :: string.[
 	"texture",
 	"sampler",
@@ -131,27 +120,24 @@ emit_field :: (state : *Codegen_State, node : *AST_Node, indentation : int) {
 		child := node.children[0];
 
 		print_to_builder(*state.builder, " = ");
-		emit_node(state, child, 0);
-		
+		emit_node(state, child, 0);		
 	}
 
 	if node.parent.kind == .Block {
 		append(*state.builder, ";");
 	}
 
-
 	for i :0..field.children.count - 1 {
 		child := from_handle(state.result.type_variables, field.children[i]);
 		emit_node(state, child.source_node, 0);
 	}
 
 	for hint : node.hint_tokens {
-		if hint.ident_value == "position" {
-			// @Incomplete(nb): Should be a lookup table somewhere
+		if lookup_hint(hint.ident_value) == .Position {
 			append(*state.builder, " : POSITION");
-		} else if hint.ident_value == "uv" {
+		} else if lookup_hint(hint.ident_value) == .UV {
 			append(*state.builder, " : TEXCOORD0");
-		} else if hint.ident_value == "outposition" {
+		} else if lookup_hint(hint.ident_value) == .Output_Position {
 			append(*state.builder, " : SV_POSITION");
 		}
 	}