From d9dfcc6354c1488e9ca1ecfdcdbd67f13621294d Mon Sep 17 00:00:00 2001
From: Niels Bross <niels@nbross.com>
Date: Mon, 2 Sep 2024 12:34:48 +0200
Subject: [PATCH] Beginning of better API

---
 Lexing.jai  | 19 +++++++++++++
 Parsing.jai | 27 ++++++++++++++++++
 module.jai  | 79 ++++++++++++++++++++++++++++++++++++++++++++++++++++-
 3 files changed, 124 insertions(+), 1 deletion(-)

diff --git a/Lexing.jai b/Lexing.jai
index 188a45e..3451623 100644
--- a/Lexing.jai
+++ b/Lexing.jai
@@ -500,6 +500,25 @@ scan_next_token :: (lexer : *Lexer) -> *Token {
 }
 
 
+
+lex :: (result : *Compile_Result) {
+	if result.had_error {
+		return;
+	}
+
+	for file : result.files {
+		lexer : Lexer;
+		init_lexer_from_string(*lexer, file.file.source);
+		token : *Token = scan_next_token(*lexer);
+		while token && token.kind != .TOKEN_EOF {
+			token = scan_next_token(*lexer);
+		}
+
+		// @Incomplete(nb): Temporary until we figure out a good way of passing this stuff around
+		copy_messages(lexer.result.messages, *result.messages);
+	}
+}
+
 lex :: (lexer : *Lexer, allocator : Allocator = context.allocator) -> Lexing_Result {
 	lexer.result.tokens.allocator = allocator;
 	token : *Token = scan_next_token(lexer);
diff --git a/Parsing.jai b/Parsing.jai
index 8214d00..bd51ada 100644
--- a/Parsing.jai
+++ b/Parsing.jai
@@ -1051,6 +1051,33 @@ declaration :: (parse_state : *Parse_State) -> *AST_Node {
 	return decl_node;
 }
 
+parse :: (result : *Compile_Result) {
+	for *file : result.files {
+		parse_state : Parse_State;
+		init_parse_state(*parse_state, file.tokens.tokens, file.file.path, result.allocator);
+		advance(*parse_state);
+
+		if !match(*parse_state, .TOKEN_EOF) {
+			parse_state.result.root = make_node(*parse_state, .Program);
+			array_reserve(*parse_state.result.root.children, 1024);
+			program := parse_state.result.root;
+
+			while !check(*parse_state, .TOKEN_EOF) {
+				decl := declaration(*parse_state);
+				if decl {
+					add_child(program, decl);
+				}
+			}
+		}
+
+		//@Incomplete(nb): will this straight copy just work?
+		//                 Might need to rething how we do this.
+		file.ast_root  = parse_state.result.root;
+		file.ast_nodes = parse_state.result.nodes;
+		copy_messages(parse_state.result.messages, *result.messages);
+	}
+}
+
 parse :: (parse_state : *Parse_State) -> Parse_Result {
 	advance(parse_state);
 
diff --git a/module.jai b/module.jai
index 27bfbc0..ad49a7e 100644
--- a/module.jai
+++ b/module.jai
@@ -131,6 +131,68 @@ Shader_Variant_Collection :: struct {
 	variants : [..]Shader_Variant;
 }
 
+Input_File :: struct {
+	source : string;
+	path   : string;
+}
+
+Token_Stream :: struct {
+	tokens : [..]Token;
+}
+
+Compiled_File :: struct {
+	file : Input_File;
+	tokens : Token_Stream;
+	ast_root  : *AST_Node;
+	ast_nodes : [..]AST_Node; 
+}
+
+Compile_Result :: struct {	
+	files : [..]Compiled_File;
+
+	had_error : bool;
+	messages : [..]Compiler_Message;
+
+	allocator : Allocator;
+	arena     : Arena;
+}
+
+//@Incomplete(niels): need to consider allocation
+add_file :: (result : *Compile_Result, path : string) {
+	file_string, ok := read_entire_file(path);
+
+	if !ok {
+		// record_error(.File_Load_Failed, "Unable to load file: %", path);
+		return;
+	}
+
+	input_file : Input_File;
+
+	input_file.source = file_string;
+	input_file.path   = path;
+
+	compiled_file : Compiled_File;
+	compiled_file.file = input_file;
+
+	array_add(*result.files, compiled_file);
+}
+
+// @Incomplete(nb): Will we ever even use this?
+from_file :: (path : string) -> Compile_Result {
+	arr : [1]string;
+	arr[0] = path;
+	return from_files(arr);
+}
+
+from_files :: (paths : []string) -> Compile_Result {
+	result : Compile_Result;
+	for path : paths {
+		add_file(*result, path);
+	}
+
+	return result;
+}
+
 Compilation_Result :: struct {
 	messages : [..]Compiler_Message;
 
@@ -295,9 +357,24 @@ type_variable_to_field :: (checker : *Semantic_Checker, variable : *Type_Variabl
 	return field;
 }
 
+compile_file :: (compiler : *Shader_Compiler, paths : []string) -> Compile_Result {
+	result : Compile_Result;
+
+	for path : paths {
+		add_file(*result, path);
+	}
+
+	lex(*result);
+	// parse(*result);
+	// check(*result);
+	// codegen(*result);
+
+	return result;
+}
+
 compile_file :: (compiler : *Shader_Compiler, path : string) -> Compilation_Result {
 	result : Compilation_Result;
-	
+
 	lexer : Lexer;
 	
 	init_lexer_from_file(*lexer, path);