From 154b1c4dccf6cb61c3d6ee2e5e6539bd04df4867 Mon Sep 17 00:00:00 2001
From: Max Wash <mbswash@gmail.com>
Date: Wed, 13 Nov 2024 21:37:49 +0000
Subject: [PATCH] frontend: compile: pass all input files through the lexer

---
 ivy/CMakeLists.txt |  4 +++
 ivy/cmd/compile.c  | 80 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 84 insertions(+)

diff --git a/ivy/CMakeLists.txt b/ivy/CMakeLists.txt
index c926bc8..9e9d7a4 100644
--- a/ivy/CMakeLists.txt
+++ b/ivy/CMakeLists.txt
@@ -3,6 +3,10 @@ file(GLOB_RECURSE ivy_sources *.c *.h)
 add_executable(ivy ${ivy_sources})
 target_link_libraries(
 	ivy
+	ivy-rt
+	ivy-asm
+	ivy-lang
+	ivy-common
 	Bluelib::Core
 	Bluelib::Object
 	Bluelib::Cmd)
diff --git a/ivy/cmd/compile.c b/ivy/cmd/compile.c
index 55b6f85..85e10c6 100644
--- a/ivy/cmd/compile.c
+++ b/ivy/cmd/compile.c
@@ -1,6 +1,78 @@
 #include "cmd.h"
 
 #include <blue/cmd.h>
+#include <blue/term.h>
+#include <errno.h>
+#include <ivy/file.h>
+#include <ivy/lang/lex.h>
+#include <stdio.h>
+
+enum {
+	ARG_SOURCE_FILE,
+};
+
+static int compile_file(const char *path)
+{
+
+	FILE *fp = fopen(path, "r");
+	if (!fp) {
+		b_err("cannot open source file '%s'", path);
+		b_i("reason: %s", strerror(errno));
+		return -1;
+	}
+
+	struct ivy_file *src = ivy_file_from_fp(fp);
+	struct ivy_lexer lex;
+	if (ivy_lexer_init(&lex) != IVY_OK) {
+		b_err("failed to initialise Ivy lexer");
+		ivy_file_close(src);
+		return -1;
+	}
+
+	lex.lex_source = &src->f_base;
+
+	while (true) {
+		struct ivy_token *tok = ivy_lexer_read(&lex);
+		if (lex.lex_status == IVY_ERR_EOF) {
+			break;
+		}
+
+		if (lex.lex_status != IVY_OK) {
+			b_err("failed to parse '%s'", path);
+			b_i("reason: lex error (%s)",
+			    ivy_status_to_string(lex.lex_status));
+			break;
+		}
+
+		printf("read token!\n");
+	}
+
+	int r = (lex.lex_status == IVY_OK || lex.lex_status == IVY_ERR_EOF) ? 0
+	                                                                    : -1;
+	ivy_file_close(src);
+	ivy_lexer_finish(&lex);
+	return r;
+}
+
+static int compile(const b_command *cmd, const b_arglist *args, const b_array *_)
+{
+	b_arglist_iterator it;
+	b_arglist_foreach_filtered(&it, args, B_COMMAND_INVALID_ID, ARG_SOURCE_FILE)
+	{
+		b_arglist_value *path = it.value;
+		if (path->val_type != B_COMMAND_ARG_STRING) {
+			continue;
+		}
+
+		printf("%s\n", path->val_str);
+		int r = compile_file(path->val_str);
+		if (r != 0) {
+			return r;
+		}
+	}
+
+	return 0;
+}
 
 B_COMMAND(CMD_COMPILE, CMD_ROOT)
 {
@@ -9,6 +81,14 @@ B_COMMAND(CMD_COMPILE, CMD_ROOT)
 	B_COMMAND_DESC(
 		"compile one or more Ivy source files into Ivy object files.");
 	B_COMMAND_FLAGS(B_COMMAND_SHOW_HELP_BY_DEFAULT);
+	B_COMMAND_FUNCTION(compile);
+
+	B_COMMAND_ARG(ARG_SOURCE_FILE)
+	{
+		B_ARG_NAME("source file");
+		B_ARG_DESC("the .im source files to compile.");
+		B_ARG_NR_VALUES(B_ARG_1_OR_MORE_VALUES);
+	}
 
 	B_COMMAND_HELP_OPTION();
 }