commit 65f6248493eb9a3e9514a7e509572837d633983f
Author: dm1sh <me@dmitriy.icu>
Date:   Fri Apr 16 18:24:34 2021 +0500

    Created basic makefile, vm command runner and stack

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..d163863
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+build/
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diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..a4948e8
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,24 @@
+CFLAG=-Wall
+BUILD_DIR=build
+
+all: build_dir stack_vm
+
+build_dir:
+	mkdir -p $(BUILD_DIR)
+
+stack_vm: main.o run.o stack.o
+	$(CC) $(BUILD_DIR)/main.o $(BUILD_DIR)/run.o $(BUILD_DIR)/stack.o -o $(BUILD_DIR)/$@
+
+main.o:
+	$(CC) -c main.c $(CFLAG) -o $(BUILD_DIR)/$@
+
+run.o:
+	$(CC) -c run.c $(CFLAG) -o $(BUILD_DIR)/$@
+
+stack.o:
+	$(CC) -c stack.c $(CFLAG) -o $(BUILD_DIR)/$@
+
+clear:
+	rm -rf $(BUILD_DIR)
+
+.PHONY: all clear
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diff --git a/command.h b/command.h
new file mode 100644
index 0000000..d404053
--- /dev/null
+++ b/command.h
@@ -0,0 +1,11 @@
+#ifndef COMMAND_H
+#define COMMAND_H
+
+enum command_e
+{
+  NONE
+};
+
+typedef enum command_e command_t;
+
+#endif
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diff --git a/main.c b/main.c
new file mode 100644
index 0000000..78fb974
--- /dev/null
+++ b/main.c
@@ -0,0 +1,6 @@
+#include "./run.h"
+#include "./stack.h"
+
+int main()
+{
+}
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diff --git a/run.c b/run.c
new file mode 100644
index 0000000..875d331
--- /dev/null
+++ b/run.c
@@ -0,0 +1,27 @@
+#include "./run.h"
+
+int run(command_t *buff, stack_t stack)
+{
+  int pos = 0;
+  int res = 0;
+
+  while (buff[pos] != NULL)
+  {
+    res = exec(buff[pos], stack);
+  }
+
+  return res;
+}
+
+int exec(command_t cmd, stack_t stack)
+{
+  switch (cmd)
+  {
+  case NONE:
+    break;
+  default:
+    return -1;
+  }
+
+  return 0;
+}
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diff --git a/run.h b/run.h
new file mode 100644
index 0000000..8d056f2
--- /dev/null
+++ b/run.h
@@ -0,0 +1,10 @@
+#ifndef RUN_H
+#define RUN_H
+
+#include "./stack.h"
+#include "./command.h"
+
+int run(command_t *buff, stack_t stack);
+int exec(command_t cmd, stack_t stack);
+
+#endif
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diff --git a/stack.c b/stack.c
new file mode 100644
index 0000000..1fb05fa
--- /dev/null
+++ b/stack.c
@@ -0,0 +1,47 @@
+#include "./stack.h"
+
+stack_t *stack_new(int size)
+{
+  stack_t *stack = (stack_t *)malloc(sizeof(stack_t));
+  if (stack == NULL)
+    return -1;
+
+  stack->mem = (int *)malloc(sizeof(int) * size);
+  if (stack->mem == NULL)
+    return -1;
+
+  stack->size = size;
+  stack->cursor = -1;
+
+  return stack;
+}
+
+int stack_push(stack_t *stack, int value)
+{
+  if (stack->cursor > stack->size - 1)
+    return 1;
+
+  stack->mem[stack->cursor + 1] = value;
+  stack->cursor += 1;
+
+  return 0;
+}
+
+int stack_pop(stack_t *stack)
+{
+  if (stack->cursor == -1)
+    return 1;
+
+  int value = stack->mem[stack->cursor];
+  stack->cursor -= 1;
+
+  return value;
+}
+
+int stack_get(stack_t *stack, int pos)
+{
+  if (pos < 0 || pos >= stack->size)
+    return 1;
+
+  return stack->mem[pos];
+}
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diff --git a/stack.h b/stack.h
new file mode 100644
index 0000000..408c658
--- /dev/null
+++ b/stack.h
@@ -0,0 +1,18 @@
+#ifndef STACK_H
+#define STACK_H
+
+#include <stdlib.h>
+
+typedef struct stack
+{
+  int size;
+  int *mem;
+  int cursor;
+} stack_t;
+
+stack_t *stack_new(int size);
+int stack_push(stack_t *stack, int value);
+int stack_pop(stack_t *stack);
+int stack_get(stack_t *stack, int pos);
+
+#endif
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