worst calculator ever

4 files changed, 65 insertions, 0 deletions

diff --git a/Tupfile b/Tupfile
new file mode 100644
index 0000000..4b55aec
--- /dev/null
+++ b/Tupfile
@@ -0,0 +1,10 @@
+CC     = gcc
+LD     = $(CC)
+CFLAGS = -std=c99 -Wall -Wextra
+LIBS   =
+NAME   = golem
+
+: foreach src/*.c |> $(CC) $(CFLAGS) -c -o %o %f |> build/%B.o
+: build/*.o |> $(LD) -o %o %f $(LIBS) |> build/$(NAME)
+
+.gitignore
diff --git a/Tupfile.ini b/Tupfile.ini
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/Tupfile.ini
diff --git a/compile_flags.txt b/compile_flags.txt
new file mode 100644
index 0000000..c376403
--- /dev/null
+++ b/compile_flags.txt
@@ -0,0 +1,3 @@
+-Wall
+-Wextra
+-std=c99
diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..1bcb71c
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,52 @@
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+static void
+error(const char *fmt, ...) {
+	fprintf(stderr, "error: ");
+	va_list va;
+	va_start(va, fmt);
+	vfprintf(stderr, fmt, va);
+	va_end(va);
+	fprintf(stderr, "\n");
+	exit(1);
+}
+
+int
+main(int argc, char **argv)
+{
+	if (argc != 2)
+		error("usage: %s code", argv[0]);
+
+	char *p = argv[1];
+
+	printf("main:\n");
+	printf("\tLIT %04lu\n", strtoul(p, &p, 10));
+
+	while (*p != '\0') {
+		const char *op;
+		switch (*p) {
+		case '+':
+			op = "ADD";
+			break;
+		case '-':
+			op = "SUB";
+			break;
+		case '*':
+			op = "MUL";
+			break;
+		case '/':
+			op = "DIV";
+			break;
+		default:
+			error("unexpected character: '%c'", *p);
+		}
+		p++;
+		printf("\tLIT %04lu %s\n", strtoul(p, &p, 10), op);
+	}
+
+	printf("\tRET\n");
+
+	return 0;
+}