Basic infile reading is working, untested

repl/main.c

@@ -1,11 +1,89 @@
-#include "toy_memory.h"
+#include "toy.h"
 
 #include <stdio.h>
+#include <string.h>
 
+//handle command line arguments
+typedef struct CmdLine {
+	bool error;
+	bool help;
+	bool version;
+	const char* infile;
+} CmdLine;
+
+void usageCmdLine(int argc, const char* argv[]) {
+	printf("Usage: %s [ -h | -v | -f source.toy ]\n\n", argv[0]);
+}
+
+void helpCmdLine(int argc, const char* argv[]) {
+	usageCmdLine(argc, argv);
+
+	printf("  -h, --help\t\t\tShow this help then exit.\n");
+	printf("  -v, --version\t\t\tShow version and copyright information then exit.\n");
+	printf("  -f, --file infile\t\tParse, compile and execute the source file then exit.\n");
+}
+
+void versionCmdLine(int argc, const char* argv[]) {
+	printf("The Toy Programming Language, Version %d.%d.%d %s\n\n", TOY_VERSION_MAJOR, TOY_VERSION_MINOR, TOY_VERSION_PATCH, TOY_VERSION_BUILD);
+
+	//copy/pasted from the license file - there's a way to include it directly, but it's too finnicky to bother
+	const char* license = "\
+Copyright (c) 2020-2024 Kayne Ruse, KR Game Studios\n\
+\n\
+This software is provided 'as-is', without any express or implied\n\
+warranty. In no event will the authors be held liable for any damages\n\
+arising from the use of this software.\n\
+\n\
+Permission is granted to anyone to use this software for any purpose,\n\
+including commercial applications, and to alter it and redistribute it\n\
+freely, subject to the following restrictions:\n\
+\n\
+1. The origin of this software must not be misrepresented; you must not\n\
+   claim that you wrote the original software. If you use this software\n\
+   in a product, an acknowledgment in the product documentation would be\n\
+   appreciated but is not required.\n\
+2. Altered source versions must be plainly marked as such, and must not be\n\
+   misrepresented as being the original software.\n\
+3. This notice may not be removed or altered from any source distribution.\n\n";
+
+	printf(license);
+}
+
+CmdLine parseCmdLine(int argc, const char* argv[]) {
+	CmdLine cmd = { .error = false, .help = false, .version = false, .infile = NULL };
+
+	for (int i = 1; i < argc; i++) {
+		if (!strcmp(argv[i], "-h") || !strcmp(argv[i], "--help")) {
+			cmd.help = true;
+		}
+
+		else if (!strcmp(argv[i], "-v") || !strcmp(argv[i], "--version")) {
+			cmd.version = true;
+		}
+
+		else if (!strcmp(argv[i], "-f") || !strcmp(argv[i], "--file")) {
+			if (argc < i + 1) {
+				cmd.error = true;
+			}
+			else {
+				cmd.infile = argv[++i];
+			}
+		}
+
+		else {
+			cmd.error = true;
+		}
+	}
+
+	return cmd;
+}
+
+//utilities
 unsigned char* readFile(const char* path, int* size) {
 	//open the file
 	FILE* file = fopen(path, "rb");
 	if (file == NULL) {
+		*size = -1; //missing file error
 		return NULL;
 	}
 
@@ -24,7 +102,7 @@ unsigned char* readFile(const char* path, int* size) {
 	//
 	if (fread(buffer, sizeof(unsigned char), *size, file) < *size) {
 		fclose(file);
-		*size = -1; //singal a read error
+		*size = -2; //singal a read error
 		return NULL;
 	}
 
@@ -32,21 +110,120 @@ unsigned char* readFile(const char* path, int* size) {
 	return buffer;
 }
 
+void dir(char* dest, const char* src) {
+	//extract the directory from src, and store it in dest
+	const char* p = strrchr(src, '/');
+	int len = p != NULL ? p - src + 1 : 0;
+	strncpy(dest, src, len);
+	dest[len] = '\0';
+}
 
-int main(int argc, char* argv[]) {
-	int size = 0;
-	unsigned char* buffer = readFile("../repl/main.c", &size); //for now, just grab the main.c file as a test
+#define APPEND(dest, src) \
+	sprintf(dest + strlen(dest), src)
 
-	if (buffer == NULL) {
-		fprintf(stderr, "Failed to open the file\n");
+//main file
+int main(int argc, const char* argv[]) {
+	CmdLine cmd = parseCmdLine(argc, argv);
+
+	if (cmd.error) {
+		usageCmdLine(argc, argv);
+	}
+	else if (cmd.help) {
+		helpCmdLine(argc, argv);
+	}
+	else if (cmd.version) {
+		versionCmdLine(argc, argv);
+	}
+	else if (cmd.infile != NULL) {
+		//run the given file
+		int size;
+		unsigned char* source = readFile(cmd.infile, &size);
+
+		//check the file
+		if (source == NULL) {
+			if (size == 0) {
+				fprintf(stderr, TOY_CC_ERROR "ERROR: Could not parse an empty file, exiting\n" TOY_CC_RESET);
+				return -1;
 			}
 
-	if (size < 0) {
-		fprintf(stderr, "Failed to read the file\n");
+			else if (size == -1) {
+				fprintf(stderr, TOY_CC_ERROR "ERROR: File not found, exiting\n" TOY_CC_RESET);
+				return -1;
 			}
 
-	TOY_FREE_ARRAY(unsigned char, buffer, size);
+			else {
+				fprintf(stderr, TOY_CC_ERROR "ERROR: Unknown error while reading file, exiting\n" TOY_CC_RESET);
+				return -1;
+			}
+		}
+
+		Toy_Lexer lexer;
+		Toy_bindLexer(&lexer, (char*)source);
+
+		Toy_Parser parser;
+		Toy_bindParser(&parser, &lexer);
+
+		Toy_Bucket* bucket = NULL;
+		TOY_BUCKET_INIT(Toy_Ast, bucket, 32);
+		Toy_Ast* ast = Toy_scanParser(&bucket, &parser);
+
+		Toy_Bytecode bc = Toy_compileBytecode(ast);
+
+		//run the setup
+		Toy_VM vm;
+		Toy_initVM(&vm);
+		Toy_bindVM(&vm, bc.ptr, bc.capacity);
+
+		//run
+		Toy_runVM(&vm);
+
+		//debugging result
+		printf("printing the stack result\n\ntype\tvalue\n");
+		for (int i = 0; i < vm.stack.count; i++) {
+			Toy_Value v = vm.stack.ptr[i];
+
+			printf(" %d\t ", v.type);
+
+			switch(v.type) {
+				case TOY_VALUE_NULL:
+					printf("null");
+					break;
+
+				case TOY_VALUE_BOOLEAN:
+					printf("%s", TOY_VALUE_AS_BOOLEAN(v) ? "true" : "false");
+					break;
+
+				case TOY_VALUE_INTEGER:
+					printf("%d", TOY_VALUE_AS_INTEGER(v));
+					break;
+
+				case TOY_VALUE_FLOAT:
+					printf("%f", TOY_VALUE_AS_FLOAT(v));
+					break;
+
+				case TOY_VALUE_STRING:
+				case TOY_VALUE_ARRAY:
+				case TOY_VALUE_DICTIONARY:
+				case TOY_VALUE_FUNCTION:
+				case TOY_VALUE_OPAQUE:
+					printf("???");
+					break;
+			}
+
+			printf("\n");
+		}
+
+		//cleanup
+		Toy_freeVM(&vm);
+		TOY_BUCKET_FREE(bucket);
+		TOY_FREE_ARRAY(unsigned char, source, size);
+	}
+	else {
+		usageCmdLine(argc, argv);
+	}
 
-	printf("All good\n");
 	return 0;
 }
+
+
+//TODO: simple and consistent way to print an AST and Toy_Value

repl/makefile

@@ -2,7 +2,7 @@
 CC=gcc
 CFLAGS+=-g -Wall -Werror -Wno-unused-parameter -Wno-unused-function -Wno-unused-variable
 LIBS+=-lm -lToy
-LDFLAGS+=-Wl,-rpath,'.'
+LDFLAGS+=-Wl,-R -Wl,'$$ORIGIN'
 
 #directories
 REPL_ROOTDIR=..

scripts/example.toy

@@ -0,0 +1 @@
+(1 + 2) * (3 + 4);

source/toy_lexer.c

@@ -236,6 +236,10 @@ void Toy_bindLexer(Toy_Lexer* lexer, const char* source) {
 }
 
 Toy_Token Toy_private_scanLexer(Toy_Lexer* lexer) {
+	if (lexer->source == NULL) {
+		return makeErrorToken(lexer, "Missing source code in lexer");
+	}
+
 	eatWhitespace(lexer);
 
 	lexer->start = lexer->current;

source/toy_parser.c

@@ -31,7 +31,7 @@ static void advance(Toy_Parser* parser) {
 	parser->current = Toy_private_scanLexer(parser->lexer);
 
 	if (parser->current.type == TOY_TOKEN_ERROR) {
-		printError(parser, parser->current, "Read error");
+		printError(parser, parser->current, "Can't read the source code");
 	}
 }