Add C++ impl and a 'compiler'

compiler/Makefile

@@ -0,0 +1,28 @@
+CC := clang++
+CFLAGS := -Wall
+CFLAGS += -std=c++11
+CFLAGS += -O2
+LFLAGS := 
+
+ODIR := .OBJ
+
+MAIN_SOURCE_DEPS := main.cpp cli.h common.h entire_file.h
+
+all: binaries
+
+$(ODIR):
+	@mkdir $(ODIR)
+
+binaries: bytecode-cc 
+
+MAIN_OBJECT_DEPS := $(ODIR)/main.o
+
+bytecode-cc: $(ODIR) $(MAIN_OBJECT_DEPS)
+	$(CC) $(CFLAGS) $(MAIN_OBJECT_DEPS) -o bytecode-cc $(LFLAGS)
+
+$(ODIR)/main.o: $(ODIR) $(MAIN_SOURCE_DEPS)
+	$(CC) -c $(CFLAGS) main.cpp -o $(ODIR)/main.o
+
+.PHONY: clean
+clean:
+	rm -rf .OBJ bytecode-cc 

compiler/cli.h

@@ -0,0 +1,103 @@
+#ifndef _CLI_H_
+#define _CLI_H_
+
+#include <cstdint>
+#include <cstdlib>
+#include <cstring>
+#include <cstdio>
+#include <cerrno>
+#include <string>
+#include <vector>
+
+struct Cli {
+    std::string input;
+    std::string output;
+
+    void print_debug() {
+        printf("Cli {\n");
+        printf("\tinput: %s\n", this->input.c_str());
+        printf("\toutput: %s\n", this->output.c_str());
+        printf("}\n");
+    }
+
+    static void help() {
+        printf("Usage: Cli [OPTIONS]\n"
+        "\n"
+        "Options:\n"
+        "    -h, --help\n"
+        "    -i, --input <INPUT>\n"
+        "    -o, --output <OUTPUT>\n"
+    );
+    exit(0);
+}
+
+    static bool is_option(char* arg) {
+        static const char* valid_options[] = {
+            "-i",
+            "--input",
+            "-o",
+            "--output",
+        };
+
+        for (size_t i = 0; i != 4; ++i) {
+            if (strcmp(arg, valid_options[i]) == 0) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    static Cli parse (int argc, char *args[]) {
+        --argc;
+        ++args;
+
+        const char* mandatory_field_names[] = { "input", "output", };
+        bool mandatory_fields_seen[sizeof(mandatory_field_names)/sizeof(mandatory_field_names[0])] = { false };
+
+        Cli res = {};
+        for (int i = 0; i != argc; ++i, ++args) {
+            char *arg = args[0];
+            if (strcmp("-h", arg) == 0 || strcmp("--help", arg) == 0) {
+                Cli::help();
+            } else if (strcmp(arg, "-i") == 0 || strcmp(arg, "--input") == 0) {
+                ++args;
+                ++i;
+                if (i == argc) {
+                    printf("Expected value for option '%s' but no value was provided", arg);
+                    exit(1);
+                }
+                std::string arg_res = args[0];
+                res.input = arg_res;
+                mandatory_fields_seen[0] = true;
+            } else if (strcmp(arg, "-o") == 0 || strcmp(arg, "--output") == 0) {
+                ++args;
+                ++i;
+                if (i == argc) {
+                    printf("Expected value for option '%s' but no value was provided", arg);
+                    exit(1);
+                }
+                std::string arg_res = args[0];
+                res.output = arg_res;
+                mandatory_fields_seen[1] = true;
+            } else {
+                printf("Unknown option '%s'\n", arg);
+                exit(1);
+            }
+        }
+
+        bool not_seen_any = false;
+        for (size_t i = 0; i != sizeof(mandatory_field_names)/sizeof(mandatory_field_names[0]); ++i) {
+            if (!mandatory_fields_seen[i]) {
+                printf("--%s was required but it was not provided\n", mandatory_field_names[i]);
+                not_seen_any = true;
+            }
+        }
+        if (not_seen_any) {
+            exit(1);
+        }
+        return res;
+    }
+};
+
+#endif // _CLI_H_

compiler/cli.in

@@ -0,0 +1,7 @@
+#[main]
+struct Cli {
+    #[short, long]
+    input: string,
+    #[short, long]
+    output: string,
+}

compiler/common.h

@@ -0,0 +1,14 @@
+//
+// Created by George Liontos on 20/4/24.
+//
+
+#ifndef COMPILER_COMMON_H
+#define COMPILER_COMMON_H
+
+#include <stdlib.h>
+
+#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof(arr[0]))
+
+#define MALLOC(size, type) ((type*) malloc((size) * sizeof(type)))
+
+#endif //COMPILER_COMMON_H

compiler/entire_file.h

@@ -0,0 +1,59 @@
+//
+// Created by George Liontos on 20/4/24.
+//
+
+#ifndef CPP_ENTIRE_FILE_H
+#define CPP_ENTIRE_FILE_H
+
+#include <stdio.h>
+#include <stddef.h>
+#include "common.h"
+
+struct EntireFile {
+    char* contents;
+    size_t num_bytes;
+};
+
+EntireFile read_entire_file_into_memory(const char* path) {
+    EntireFile res = {0};
+    FILE* f = fopen(path, "rb");
+    size_t num_bytes_read = 0U;
+
+    if (f == nullptr) {
+        fprintf(stderr, "Could not open '%s' for reading\n", path);
+        return res;
+    }
+
+    if (fseek(f, 0, SEEK_END) != 0) {
+        goto err;
+    }
+
+    res.num_bytes = ftell(f);
+    if (res.num_bytes == -1L) {
+        goto err;
+    }
+
+    if (fseek(f, 0, SEEK_SET) != 0) {
+        goto err;
+    }
+
+    res.contents = MALLOC(res.num_bytes + 1, char);
+    num_bytes_read = fread(res.contents, sizeof(char), res.num_bytes, f);
+    if (num_bytes_read != res.num_bytes) {
+        goto err;
+    }
+
+    fclose(f);
+    return res;
+
+    err:
+    fclose(f);
+    if (res.contents) {
+        free(res.contents);
+    }
+    res.contents = nullptr;
+    res.num_bytes = 0;
+    return res;
+}
+
+#endif //CPP_ENTIRE_FILE_H

compiler/example

@@ -0,0 +1,3 @@
+CONST 1
+CONST 7
+ADD