bshell: generate and evaluate bytecode for shell input

bshell/main.c

@@ -1,37 +1,110 @@
+#include "ast/ast.h"
+#include "compile.h"
+#include "debug.h"
 #include "file.h"
 #include "line-ed/line-ed.h"
+#include "parse/lex.h"
+#include "parse/parse.h"
+#include "parse/token.h"
+#include "runtime/runtime.h"
 
 #include <stdio.h>
 
+static void print_token_queue(fx_queue *q)
+{
+	fx_queue_entry *cur = fx_queue_first(q);
+	while (cur) {
+		struct lex_token *tok = fx_unbox(
+			struct lex_token,
+			cur,
+			tok_entry);
+		print_lex_token(tok);
+		cur = fx_queue_next(cur);
+	}
+}
+
+static void lex_only(struct lex_ctx *lex)
+{
+	while (1) {
+		struct lex_token *tok = lex_ctx_peek(lex);
+		if (!tok) {
+			break;
+		}
+
+		lex_ctx_discard(lex);
+	}
+}
+
+static void lex_and_parse(struct parse_ctx *parse)
+{
+}
+
+extern int compare_token_types(unsigned int a, unsigned int b);
+
 int main(int argc, const char **argv)
 {
 	printf("B Shell " BSHELL_VERSION "\n");
 
+	struct file *file = NULL;
+	struct line_ed *ed = NULL;
 	struct line_source *linesrc = NULL;
 
 	enum bshell_status status = BSHELL_SUCCESS;
 
 	if (argc > 1) {
-		struct file *file = NULL;
 		status = file_open(argv[1], &file);
 		linesrc = &file->f_base;
 	} else {
-		struct line_ed *ed = line_ed_create();
+#if BSHELL_INTERACTIVE == 1
+		ed = line_ed_create();
 		linesrc = line_ed_to_line_source(ed);
+#else
+		fprintf(stderr, "Interactive mode is not supported.\n");
+		return -1;
+#endif
 	}
 
-	fx_stringstream *linebuf = fx_stringstream_create();
+	struct lex_ctx lex = {0};
+	lex_ctx_init(&lex, LEX_PRINT_TOKENS, linesrc);
+	struct parse_ctx parse = {0};
+	parse_ctx_init(&parse, &lex);
+
+#if 0
+	lex_only(&lex);
+	return 0;
+#endif
+
+	bshell_scriptblock *block = bshell_scriptblock_create();
+	struct bshell_runtime *rt = bshell_runtime_create();
 
 	while (1) {
-		enum bshell_status status
-			= line_source_readline(linesrc, linebuf);
-
-		if (status != BSHELL_SUCCESS) {
+		struct ast_node *node = parse_ctx_read_node(&parse);
+		if (!node) {
 			break;
 		}
 
-		printf("%s", fx_stringstream_ptr(linebuf));
-		fx_stringstream_reset(linebuf);
+		print_ast_node_recursive(node);
+		printf("----\n");
+
+		bshell_scriptblock_clear_text(block);
+		bshell_compile(node, block);
+		print_scriptblock(block, 0);
+
+		fx_value result = bshell_runtime_eval_global(rt, block);
+		print_value(&result);
+	}
+
+	parse_ctx_cleanup(&parse);
+	lex_ctx_cleanup(&lex);
+
+#if BSHELL_INTERACTIVE == 1
+	if (ed) {
+		line_ed_destroy(ed);
+	}
+#endif
+
+	if (file) {
+		file_close(file);
 	}
 
 	return 0;