Got hooks working

repl/repl_main.c

@@ -0,0 +1,262 @@
+#include "console_colors.h"
+
+#include "lexer.h"
+#include "parser.h"
+#include "compiler.h"
+#include "interpreter.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+//extra libraries
+#include "lib_standard.h"
+
+//IO functions
+char* readFile(char* path, size_t* fileSize) {
+	FILE* file = fopen(path, "rb");
+
+	if (file == NULL) {
+		fprintf(stderr, ERROR "Could not open file \"%s\"\n" RESET, path);
+		exit(-1);
+	}
+
+	fseek(file, 0L, SEEK_END);
+	*fileSize = ftell(file);
+	rewind(file);
+
+	char* buffer = (char*)malloc(*fileSize + 1);
+
+	if (buffer == NULL) {
+		fprintf(stderr, ERROR "Not enough memory to read \"%s\"\n" RESET, path);
+		exit(-1);
+	}
+
+	size_t bytesRead = fread(buffer, sizeof(char), *fileSize, file);
+
+	buffer[*fileSize] = '\0'; //NOTE: fread doesn't append this
+
+	if (bytesRead < *fileSize) {
+		fprintf(stderr, ERROR "Could not read file \"%s\"\n" RESET, path);
+		exit(-1);
+	}
+
+	fclose(file);
+
+	return buffer;
+}
+
+void writeFile(char* path, unsigned char* bytes, size_t size) {
+	FILE* file = fopen(path, "wb");
+
+	if (file == NULL) {
+		fprintf(stderr, ERROR "Could not open file \"%s\"\n" RESET, path);
+		exit(-1);
+	}
+
+	int written = fwrite(bytes, size, 1, file);
+
+	if (written != 1) {
+		fprintf(stderr, ERROR "Could not write file \"%s\"\n" RESET, path);
+		exit(-1);
+	}
+
+	fclose(file);
+}
+
+unsigned char* compileString(char* source, size_t* size) {
+	Lexer lexer;
+	Parser parser;
+	Compiler compiler;
+
+	initLexer(&lexer, source);
+	initParser(&parser, &lexer);
+	initCompiler(&compiler);
+
+	//run the parser until the end of the source
+	Node* node = scanParser(&parser);
+	while(node != NULL) {
+		//pack up and leave
+		if (node->type == NODE_ERROR) {
+			printf(ERROR "error node detected\n" RESET);
+			freeNode(node);
+			freeCompiler(&compiler);
+			freeParser(&parser);
+			return NULL;
+		}
+
+		writeCompiler(&compiler, node);
+		freeNode(node);
+		node = scanParser(&parser);
+	}
+
+	//get the bytecode dump
+	unsigned char* tb = collateCompiler(&compiler, (int*)(size));
+
+	//cleanup
+	freeCompiler(&compiler);
+	freeParser(&parser);
+	//no lexer to clean up
+
+	//finally
+	return tb;
+}
+
+void runBinary(unsigned char* tb, size_t size) {
+	Interpreter interpreter;
+	initInterpreter(&interpreter);
+
+	//inject the libs
+	injectNativeHook(&interpreter, "standard", hookStandard);
+
+	runInterpreter(&interpreter, tb, size);
+	freeInterpreter(&interpreter);
+}
+
+void runBinaryFile(char* fname) {
+	size_t size = 0; //not used
+	unsigned char* tb = (unsigned char*)readFile(fname, &size);
+	if (!tb) {
+		return;
+	}
+	runBinary(tb, size);
+	//interpreter takes ownership of the binary data
+}
+
+void runSource(char* source) {
+	size_t size = 0;
+	unsigned char* tb = compileString(source, &size);
+	if (!tb) {
+		return;
+	}
+
+	runBinary(tb, size);
+}
+
+void runSourceFile(char* fname) {
+	size_t size = 0; //not used
+	char* source = readFile(fname, &size);
+	runSource(source);
+	free((void*)source);
+}
+
+void repl() {
+	//repl does it's own thing for now
+	bool error = false;
+
+	const int size = 2048;
+	char input[size];
+	memset(input, 0, size);
+
+	Interpreter interpreter; //persist the interpreter for the scopes
+	initInterpreter(&interpreter);
+
+	//inject the libs
+	injectNativeHook(&interpreter, "standard", hookStandard);
+
+	for(;;) {
+		printf("> ");
+		fgets(input, size, stdin);
+
+		//setup this iteration
+		Lexer lexer;
+		Parser parser;
+		Compiler compiler;
+
+		initLexer(&lexer, input);
+		initParser(&parser, &lexer);
+		initCompiler(&compiler);
+
+		//run this iteration
+		Node* node = scanParser(&parser);
+		while(node != NULL) {
+			//pack up and restart
+			if (node->type == NODE_ERROR) {
+				printf(ERROR "error node detected\n" RESET);
+				error = true;
+				freeNode(node);
+				break;
+			}
+
+			writeCompiler(&compiler, node);
+			freeNode(node);
+			node = scanParser(&parser);
+		}
+
+		if (!error) {
+			//get the bytecode dump
+			int size = 0;
+			unsigned char* tb = collateCompiler(&compiler, &size);
+
+			//run the bytecode
+			runInterpreter(&interpreter, tb, size);
+		}
+
+		//clean up this iteration
+		freeCompiler(&compiler);
+		freeParser(&parser);
+		error = false;
+	}
+
+	freeInterpreter(&interpreter);
+}
+
+//entry point
+int main(int argc, const char* argv[]) {
+	initCommand(argc, argv);
+
+	//command specific actions
+	if (command.error) {
+		usageCommand(argc, argv);
+		return 0;
+	}
+
+	if (command.help) {
+		helpCommand(argc, argv);
+		return 0;
+	}
+
+	if (command.version) {
+		copyrightCommand(argc, argv);
+		return 0;
+	}
+
+	//TODO: remove this when the interpreter meets the specification
+	if (command.verbose) {
+		printf(WARN "Warning! This interpreter is a work in progress, it does not yet meet the %d.%d.%d specification.\n" RESET, TOY_VERSION_MAJOR, TOY_VERSION_MINOR, TOY_VERSION_PATCH);
+	}
+
+	//run source file
+	if (command.sourcefile) {
+		runSourceFile(command.sourcefile);
+		return 0;
+	}
+
+	//run from stdin
+	if (command.source) {
+		runSource(command.source);
+		return 0;
+	}
+
+	//compile source file
+	if (command.compilefile && command.outfile) {
+		size_t size = 0;
+		char* source = readFile(command.compilefile, &size);
+		unsigned char* tb = compileString(source, &size);
+		if (!tb) {
+			return 1;
+		}
+		writeFile(command.outfile, tb, size);
+		return 0;
+	}
+
+	//run binary
+	if (command.binaryfile) {
+		runBinaryFile(command.binaryfile);
+		return 0;
+	}
+
+	repl();
+
+	return 0;
+}