Added a utility to call toy functions from C

test/test_call_from_host.c

@@ -0,0 +1,312 @@
+#include "lexer.h"
+#include "parser.h"
+#include "compiler.h"
+#include "interpreter.h"
+
+#include "console_colors.h"
+
+#include "memory.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+
+//supress the print output
+static void noPrintFn(const char* output) {
+	//NO OP
+}
+
+//compilation 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;
+}
+
+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
+	ASTNode* node = scanParser(&parser);
+	while(node != NULL) {
+		//pack up and leave
+		if (node->type == AST_NODEERROR) {
+			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 error(char* msg) {
+	printf(msg);
+	exit(-1);
+}
+
+int main() {
+	{
+		size_t size = 0;
+		char* source = readFile("../scripts//test/call-from-host.toy", &size);
+		unsigned char* tb = compileString(source, &size);
+
+		if (!tb) {
+			return -1;
+		}
+
+		Interpreter interpreter;
+		initInterpreter(&interpreter);
+		runInterpreter(&interpreter, tb, size);
+
+		//test answer
+		{
+			interpreter.printOutput("Testing answer");
+
+			LiteralArray arguments;
+			initLiteralArray(&arguments);
+			LiteralArray returns;
+			initLiteralArray(&returns);
+
+			callFn(&interpreter, "answer", &arguments, &returns);
+
+			//check the results
+			if (arguments.count != 0) {
+				error("Arguments has the wrong number of members\n");
+			}
+
+			if (returns.count != 1) {
+				error("Returns has the wrong number of members\n");
+			}
+
+			if (!IS_INTEGER(returns.literals[0]) || AS_INTEGER(returns.literals[0]) != 42) {
+				error("Returned value is incorrect\n");
+			}
+
+			freeLiteralArray(&arguments);
+			freeLiteralArray(&returns);
+		}
+
+		//test identity
+		{
+			interpreter.printOutput("Testing identity");
+
+			LiteralArray arguments;
+			initLiteralArray(&arguments);
+			LiteralArray returns;
+			initLiteralArray(&returns);
+
+			//push an argument
+			float pi = 3.14;
+			Literal arg = TO_FLOAT_LITERAL(pi);
+			pushLiteralArray(&arguments, arg);
+
+			callFn(&interpreter, "identity", &arguments, &returns);
+
+			//check the results
+			if (arguments.count != 0) {
+				error("Arguments has the wrong number of members\n");
+			}
+
+			if (returns.count != 1) {
+				error("Returns has the wrong number of members\n");
+			}
+
+			float epsilon = 0.1; //because floats are evil
+
+			if (!IS_FLOAT(returns.literals[0]) || fabs(AS_FLOAT(returns.literals[0]) - pi) > epsilon) {
+				error("Returned value is incorrect\n");
+			}
+
+			freeLiteralArray(&arguments);
+			freeLiteralArray(&returns);
+		}
+
+		//test makeCounter (closures)
+		{
+			interpreter.printOutput("Testing makeCounter (closures)");
+
+			LiteralArray arguments;
+			initLiteralArray(&arguments);
+			LiteralArray returns;
+			initLiteralArray(&returns);
+
+			callFn(&interpreter, "makeCounter", &arguments, &returns);
+
+			//check the results
+			if (arguments.count != 0) {
+				error("Arguments has the wrong number of members\n");
+			}
+
+			if (returns.count != 1) {
+				error("Returns has the wrong number of members\n");
+			}
+
+			//grab the resulting literal
+			Literal counter = popLiteralArray(&returns);
+
+			freeLiteralArray(&arguments);
+			freeLiteralArray(&returns);
+
+			//call counter repeatedly
+			{
+				LiteralArray arguments;
+				initLiteralArray(&arguments);
+				LiteralArray returns;
+				initLiteralArray(&returns);
+
+				callLiteralFn(&interpreter, counter, &arguments, &returns);
+
+				//check the results
+				if (arguments.count != 0) {
+					error("Arguments (1) has the wrong number of members\n");
+				}
+
+				if (returns.count != 1) {
+					error("Returns (1) has the wrong number of members\n");
+				}
+
+				if (!IS_INTEGER(returns.literals[0]) || AS_INTEGER(returns.literals[0]) != 1) {
+					error("Returned value (1) is incorrect\n");
+				}
+
+				freeLiteralArray(&arguments);
+				freeLiteralArray(&returns);
+			}
+
+			{
+				LiteralArray arguments;
+				initLiteralArray(&arguments);
+				LiteralArray returns;
+				initLiteralArray(&returns);
+
+				callLiteralFn(&interpreter, counter, &arguments, &returns);
+
+				//check the results
+				if (arguments.count != 0) {
+					error("Arguments (2) has the wrong number of members\n");
+				}
+
+				if (returns.count != 1) {
+					error("Returns (2) has the wrong number of members\n");
+				}
+
+				if (!IS_INTEGER(returns.literals[0]) || AS_INTEGER(returns.literals[0]) != 2) {
+					error("Returned value (2) is incorrect\n");
+				}
+
+				freeLiteralArray(&arguments);
+				freeLiteralArray(&returns);
+			}
+
+			{
+				LiteralArray arguments;
+				initLiteralArray(&arguments);
+				LiteralArray returns;
+				initLiteralArray(&returns);
+
+				callLiteralFn(&interpreter, counter, &arguments, &returns);
+
+				//check the results
+				if (arguments.count != 0) {
+					error("Arguments (3) has the wrong number of members\n");
+				}
+
+				if (returns.count != 1) {
+					error("Returns (3) has the wrong number of members\n");
+				}
+
+				if (!IS_INTEGER(returns.literals[0]) || AS_INTEGER(returns.literals[0]) != 3) {
+					error("Returned value (3) is incorrect\n");
+				}
+
+				freeLiteralArray(&arguments);
+				freeLiteralArray(&returns);
+			}
+		}
+
+		//test assertion failure
+		{
+			interpreter.printOutput("Testing assertion failure");
+
+			LiteralArray arguments;
+			initLiteralArray(&arguments);
+			LiteralArray returns;
+			initLiteralArray(&returns);
+
+			bool ret = callFn(&interpreter, "fail", &arguments, &returns);
+
+			//check the results
+			if (arguments.count != 0) {
+				error("Arguments has the wrong number of members\n");
+			}
+
+			if (returns.count != 1 || !IS_NULL(returns.literals[0])) {
+				error("Returns has the wrong number of members\n");
+			}
+
+			if (!ret) {
+				error("Assertion gives the wrong return value\n");
+			}
+
+			freeLiteralArray(&arguments);
+			freeLiteralArray(&returns);
+		}
+
+		//clean up
+		freeInterpreter(&interpreter);
+	}
+
+	printf(NOTICE "All good\n" RESET);
+	return 0;
+}
+

test/test_interpreter.c

@@ -92,7 +92,7 @@ void runBinary(unsigned char* tb, size_t size) {
 	Interpreter interpreter;
 	initInterpreter(&interpreter);
 
-	//NOTE: supress print output for testing
+	//NOTE: suppress print output for testing
 	setInterpreterPrint(&interpreter, noPrintFn);
 
 	runInterpreter(&interpreter, tb, size);