Change to output a string buffer instead of raw printf

arch/linux/main.c

@@ -1,6 +1,7 @@
 #include "../../compiler.h"
 #include <stdio.h>
 #include <stdlib.h>
+#include <unistd.h>
 
 static char *
 readFile(const char *path)
@@ -67,10 +68,28 @@ main(int argc, char **argv)
 	u8 tape[MEM_SIZE];
 	Arena a = {tape, 0, MEM_SIZE};
 
+	List *code = List_init(&a);
+	List *memory = List_init(&a);
+
 	char *source = readFile(argv[2]);
-	compile(&a, e, source);
+	compile(&a, code, memory, e, source);
+
+	Node *curr = code->head;
+    while (curr) {
+        char* tmp_str = node_value(curr);
+		write(STDOUT_FILENO, tmp_str, curr->size);
+        curr = curr->next;
+    }
+
+	curr = memory->head;
+    while (curr) {
+        char* tmp_str = node_value(curr);
+		write(STDOUT_FILENO, tmp_str, curr->size);
+        curr = curr->next;
+    }
+
+	afree(&a);
 	free(source);
-	printf("\n");
 
 	return EXIT_SUCCESS;
 }

compiler.c

@@ -8,6 +8,8 @@
 Emitter emitter = {0};
 Parser parser = {0};
 Arena *arena;
+List *code;
+List *memory;
 
 /****************************************************
  *  Scope
@@ -371,6 +373,20 @@ variable_declaration(Symbol *def)
 		while(!check(TOKEN_RBRACKET)) {
 			advance();
 		}
+
+		variable = scope_get_symbol(parser.current_scope, 
+									parser.previous.start,
+							parser.previous.length);
+
+		if (check(TOKEN_EQ)) {
+			
+		}
+
+		while(!check(TOKEN_SEMICOLON)) {
+			advance();
+		}
+
+		return variable->size;
 	}
 
 	if(st != SYMBOL_UNDEFINED) {
@@ -383,7 +399,7 @@ variable_declaration(Symbol *def)
 		if(def) {
 			List_push(arena, def->args, variable, sizeof(Symbol));
 		} else {
-			emitter.emit_type(variable, parser.depth);
+			emitter.emit_type(arena, code, variable, parser.depth);
 			parser.current_type = st;
 		}
 	} else {
@@ -400,13 +416,13 @@ variable_declaration(Symbol *def)
 	if(parser.pass == 0) return size;
 
 	if(match(TOKEN_EQ)) {
-		emitter.emit_set_value();
+		emitter.emit_set_value(arena, code);
 		expression();
-		emitter.emit_constant(variable, parser.depth);
+		emitter.emit_constant(arena, code, variable, parser.depth);
 	}
 
 	consume(TOKEN_SEMICOLON);
-	emitter.emit_end_statement();
+	emitter.emit_end_statement(arena, code);
 	parser.current_type = SYMBOL_UNDEFINED;
 	return size;
 }
@@ -421,52 +437,52 @@ binary()
 
 	switch(operatorType) {
 	case TOKEN_BANG_EQ:
-		emitter.emit_ne();
+		emitter.emit_ne(arena, code);
 		break;
 	case TOKEN_EQ_EQ:
-		emitter.emit_eq();
+		emitter.emit_eq(arena, code);
 		break;
 	case TOKEN_GT:
-		emitter.emit_gt();
+		emitter.emit_gt(arena, code);
 		break;
 	case TOKEN_GTE:
-		emitter.emit_ge();
+		emitter.emit_ge(arena, code);
 		break;
 	case TOKEN_LT:
-		emitter.emit_lt();
+		emitter.emit_lt(arena, code);
 		break;
 	case TOKEN_LTE:
-		emitter.emit_le();
+		emitter.emit_le(arena, code);
 		break;
 	case TOKEN_PLUS:
-		emitter.emit_add();
+		emitter.emit_add(arena, code);
 		break;
 	case TOKEN_MINUS:
-		emitter.emit_sub();
+		emitter.emit_sub(arena, code);
 		break;
 	case TOKEN_STAR:
-		emitter.emit_mul();
+		emitter.emit_mul(arena, code);
 		break;
 	case TOKEN_SLASH:
-		emitter.emit_div();
+		emitter.emit_div(arena, code);
 		break;
 	case TOKEN_OPERATOR_AND:
-		emitter.emit_and();
+		emitter.emit_and(arena, code);
 		break;
 	case TOKEN_OPERATOR_OR:
-		emitter.emit_or();
+		emitter.emit_or(arena, code);
 		break;
 	case TOKEN_OPERATOR_XOR:
-		emitter.emit_xor();
+		emitter.emit_xor(arena, code);
 		break;
 	case TOKEN_OPERATOR_MOD:
-		emitter.emit_mod();
+		emitter.emit_mod(arena, code);
 		break;
 	case TOKEN_SLL:
-		emitter.emit_sll();
+		emitter.emit_sll(arena, code);
 		break;
 	case TOKEN_SRL:
-		emitter.emit_srl();
+		emitter.emit_srl(arena, code);
 		break;
 	default:
 		return;
@@ -478,13 +494,13 @@ literal()
 {
 	switch(parser.previous.type) {
 	case TOKEN_KEYWORD_FALSE:
-		emitter.emit_false();
+		emitter.emit_false(arena, code);
 		break;
 	case TOKEN_KEYWORD_TRUE:
-		emitter.emit_true();
+		emitter.emit_true(arena, code);
 		break;
 	case TOKEN_KEYWORD_NIL:
-		emitter.emit_nil();
+		emitter.emit_nil(arena, code);
 		break;
 	default:
 		return;
@@ -515,9 +531,9 @@ variable()
 	parser.current_type = sym->type;
 	if(match(TOKEN_EQ)) {
 		expression();
-		emitter.emit_set_variable(sym, sym->scope);
+		emitter.emit_set_variable(arena, code, sym, sym->scope);
 	} else {
-		emitter.emit_variable(sym, sym->scope);
+		emitter.emit_variable(arena, code, sym, sym->scope);
 	}
 }
 
@@ -539,15 +555,15 @@ cast_type()
 	case SYMBOL_INT: {
 		switch(cast_type) {
 		case TOKEN_TYPE_NAT: {
-			emitter.emit_cast_int_to_nat();
+			emitter.emit_cast_int_to_nat(arena, code);
 			break;
 		}
 		case TOKEN_TYPE_REAL: {
-			emitter.emit_cast_int_to_real();
+			emitter.emit_cast_int_to_real(arena, code);
 			break;
 		}
 		case TOKEN_TYPE_STR: {
-			emitter.emit_cast_int_to_str();
+			emitter.emit_cast_int_to_str(arena, code);
 			break;
 		}
 		default:
@@ -559,15 +575,15 @@ cast_type()
 	case SYMBOL_NAT: {
 		switch(cast_type) {
 		case TOKEN_TYPE_INT: {
-			emitter.emit_cast_nat_to_int();
+			emitter.emit_cast_nat_to_int(arena, code);
 			break;
 		}
 		case TOKEN_TYPE_REAL: {
-			emitter.emit_cast_nat_to_real();
+			emitter.emit_cast_nat_to_real(arena, code);
 			break;
 		}
 		case TOKEN_TYPE_STR: {
-			emitter.emit_cast_nat_to_str();
+			emitter.emit_cast_nat_to_str(arena, code);
 			break;
 		}
 		default:
@@ -578,15 +594,15 @@ cast_type()
 	case SYMBOL_REAL: {
 		switch(cast_type) {
 		case TOKEN_TYPE_NAT: {
-			emitter.emit_cast_real_to_nat();
+			emitter.emit_cast_real_to_nat(arena, code);
 			break;
 		}
 		case TOKEN_TYPE_INT: {
-			emitter.emit_cast_real_to_int();
+			emitter.emit_cast_real_to_int(arena, code);
 			break;
 		}
 		case TOKEN_TYPE_STR: {
-			emitter.emit_cast_real_to_str();
+			emitter.emit_cast_real_to_str(arena, code);
 			break;
 		}
 		default:
@@ -597,15 +613,15 @@ cast_type()
 	case SYMBOL_STR: {
 		switch(cast_type) {
 		case TOKEN_TYPE_NAT: {
-			emitter.emit_cast_str_to_nat();
+			emitter.emit_cast_str_to_nat(arena, code);
 			break;
 		}
 		case TOKEN_TYPE_REAL: {
-			emitter.emit_cast_str_to_real();
+			emitter.emit_cast_str_to_real(arena, code);
 			break;
 		}
 		case TOKEN_TYPE_INT: {
-			emitter.emit_cast_str_to_int();
+			emitter.emit_cast_str_to_int(arena, code);
 			break;
 		}
 		default:
@@ -632,8 +648,8 @@ print_statement()
 {
 	expression();
 	consume(TOKEN_SEMICOLON);
-	emitter.emit_print();
+	emitter.emit_print(arena, code);
-	emitter.emit_end_statement();
+	emitter.emit_end_statement(arena, code);
 }
 
 void
@@ -642,28 +658,28 @@ if_statement()
 	consume(TOKEN_LPAREN);
 	expression();
 	consume(TOKEN_RPAREN);
-	emitter.emit_if();
+	emitter.emit_if(arena, code);
 	statement();
 
-	emitter.emit_patch_if(emitter.ifs);
+	emitter.emit_patch_if(arena, code, emitter.ifs);
 	if(match(TOKEN_KEYWORD_ELSE)) {
 		emitter.else_if_depth++;
 		statement();
 		emitter.else_if_depth--;
 	}
-	if(emitter.else_if_depth == 0) emitter.emit_patch_if_done(emitter.ifs++);
+	if(emitter.else_if_depth == 0) emitter.emit_patch_if_done(arena, code, emitter.ifs++);
 }
 
 void
 while_statement()
 {
-	emitter.emit_while(emitter.loops);
+	emitter.emit_while(arena, code, emitter.loops);
 	consume(TOKEN_LPAREN);
 	expression();
 	consume(TOKEN_RPAREN);
-	emitter.emit_while_postfix();
+	emitter.emit_while_postfix(arena, code);
 	statement();
-	emitter.emit_patch_while(emitter.loops++);
+	emitter.emit_patch_while(arena, code, emitter.loops++);
 }
 
 void
@@ -679,13 +695,13 @@ function()
 {
 	Symbol *sym = scope_get_symbol(parser.current_scope, parser.previous.start,
 																 parser.previous.length);
-	emitter.emit_function(sym);
+	emitter.emit_function(arena, code, sym);
 	scope_push();
 	while(!check(TOKEN_RPAREN)) advance();
 	consume(TOKEN_RPAREN);
 	consume(TOKEN_LBRACE);
 	block();
-	emitter.emit_arena_fn_return();
+	emitter.emit_arena_fn_return(arena, code);
 }
 
 void
@@ -698,7 +714,7 @@ call()
 	}
 	consume(TOKEN_RPAREN);
 
-	emitter.emit_arena_fn_call(parser.call_fn);
+	emitter.emit_arena_fn_call(arena, code, parser.call_fn);
 	parser.current_type = parser.call_fn->secondary_type;
 	return;
 }
@@ -707,11 +723,11 @@ void
 return_statement()
 {
 	if(match(TOKEN_SEMICOLON)) {
-		emitter.emit_early_return();
+		emitter.emit_early_return(arena, code);
 	} else {
 		expression();
 		consume(TOKEN_SEMICOLON);
-		emitter.emit_early_return();
+		emitter.emit_early_return(arena, code);
 	}
 }
 
@@ -734,7 +750,7 @@ statement()
 	} else if(match(TOKEN_KEYWORD_PRINT)) {
 		print_statement();
 	} else if(match(TOKEN_KEYWORD_HALT)) {
-		emitter.emit_halt();
+		emitter.emit_halt(arena, code);
 	} else {
 		expression();
 	}
@@ -743,24 +759,24 @@ statement()
 void
 grouping()
 {
-	emitter.emit_open_paren();
+	emitter.emit_open_paren(arena, code);
 
 	expression();
 
-	emitter.emit_close_paren();
+	emitter.emit_close_paren(arena, code);
 	consume(TOKEN_RPAREN);
 }
 
 void
 number()
 {
-	emitter.emit_int(parser.previous.start, parser.previous.length);
+	emitter.emit_int(arena, code, parser.previous.start, parser.previous.length);
 }
 
 void
 string()
 {
-	emitter.emit_str(parser.previous.start, parser.previous.length);
+	emitter.emit_str(arena, code, parser.previous.start, parser.previous.length);
 }
 
 void
@@ -771,10 +787,10 @@ unary()
 
 	switch(operatorType) {
 	case TOKEN_MINUS:
-		emitter.emit_neg();
+		emitter.emit_neg(arena, code);
 		break;
 	case TOKEN_BANG:
-		emitter.emit_not();
+		emitter.emit_not(arena, code);
 		break;
 	default:
 		return;
@@ -895,18 +911,19 @@ emit_program(char *source)
 	init_lexer(source);
 	advance();
 
-	emitter.prolog();
+	emitter.prolog(arena, code);
+	emitter.epilogue(arena, memory);
 
 	while(!match(TOKEN_EOF)) declaration();
-
-	emitter.epilogue();
 }
 
 bool
-compile(Arena *a, Emitter e, char *source)
+compile(Arena *a, List *c, List* m, Emitter e, char *source)
 {
 	arena = a;
 	emitter = e;
+	code = c;
+	memory = m;
 	parser.scopes = List_init(arena);
 
 	build_symbol_table(source);

compiler.h

@@ -42,15 +42,15 @@ struct parse_rule_s {
 struct parser_s {
     Symbol *call_fn;
     Scope *current_scope;
-	u32 scope_idx;
     List *scopes;
     Token current;
     Token previous;
     SymbolType current_type;
+    u32 scope_idx;
     u32 depth;
     u8 pass;
 };
 
-bool compile(Arena *a, Emitter e, char *source);
+bool compile(Arena *a, List *c, List *m, Emitter e, char *source);
 
 #endif

emit.h

@@ -2,15 +2,16 @@
 #define UNDAR_EMIT_H
 
 #include "common.h"
+#include "strbuf.h"
 #include "libc.h"
 
 typedef u32 (*SymbolSize)(SymbolType t);
-typedef void (*SymbolEmit)(Symbol *sym);
 typedef void (*ErrorMsg)(const char *str, i32 length, i32 line);
-typedef void (*VoidArgEmit)();
+typedef void (*SymbolEmit)(Arena *a, List *out, Symbol *sym);
-typedef void (*StrArgEmit)(const char *str, i32 length);
+typedef void (*VoidArgEmit)(Arena *a, List *out);
-typedef void (*VarEmit)(Symbol *sym, bool local);
+typedef void (*StrArgEmit)(Arena *a, List *out, const char *str, i32 length);
-typedef void (*I32ArgEmit)(i32 val);
+typedef void (*VarEmit)(Arena *a, List *out, Symbol *sym, bool local);
+typedef void (*I32ArgEmit)(Arena *a, List *out, i32 val);
 
 typedef struct emitter_s Emitter;
 struct emitter_s {

emit/rer/emit.c

@@ -2,11 +2,12 @@
 #include <stdio.h>
 #include <stdlib.h>
 
+char rer_temp_strbuf[256];
 
 void
 rer_emit_error(const char *str, i32 length, i32 line)
 {
-	fprintf(stderr, "\n===\nError at line: %d > %.*s\n===\n", line, length, str);
+	fprintf(stderr, "\n===\nError at line: %d '%.*s'\n===\n", line, length, str);
 	exit(1);
 }
 
@@ -17,110 +18,114 @@ rer_mem(u32 a)
 }
 
 void
-rer_prolog()
+rer_prolog(Arena *a, List *out)
 {
-	printf("|100\n");
+	/*StrBuf_append(a, out, "|100\n\tLIT2r 0000 main_ POP2r BRK\n\n");*/
+	StrBuf_append(a, out, "|100\n\tLIT2r 0000\n\n");
 }
 
 void
-rer_epilogue()
+rer_epilogue(Arena *a, List *out)
 {
-	printf("BRK\n\n");
+	USED(a);
+	USED(out);
 }
 
 void
-rer_emit_add()
+rer_emit_add(Arena *a, List *out)
 {
-	printf("ADD2 ");
+	StrBuf_append(a, out, "ADD2 ");
 }
 
 void
-rer_emit_sub()
+rer_emit_sub(Arena *a, List *out)
 {
-	printf("SUB2 ");
+	StrBuf_append(a, out, "SUB2 ");
 }
 
 void
-rer_emit_mul()
+rer_emit_mul(Arena *a, List *out)
 {
-	printf("MUL2 ");
+	StrBuf_append(a, out, "MUL2 ");
 }
 
 void
-rer_emit_div()
+rer_emit_div(Arena *a, List *out)
 {
-	printf("DIV2 ");
+	StrBuf_append(a, out, "DIV2 ");
 }
 
 void
-rer_emit_lt()
+rer_emit_lt(Arena *a, List *out)
 {
-	printf("LTH2 ");
+	StrBuf_append(a, out, "LTH2 ");
 }
 
 void
-rer_emit_le()
+rer_emit_le(Arena *a, List *out)
 {
-	printf("ROT SWP LTH ?{ LTH #00 EQU JMPr } GTH JMPr ");
+	StrBuf_append(a, out, "ROT SWP LTH ?{ LTH #00 EQU JMPr } GTH JMPr ");
 }
 
 void
-rer_emit_gt()
+rer_emit_gt(Arena *a, List *out)
 {
-	printf("GTH2 ");
+	StrBuf_append(a, out, "GTH2 ");
 }
 
 void
-rer_emit_ge()
+rer_emit_ge(Arena *a, List *out)
 {
-	printf("ROT SWP GTH ?{ GTH #00 EQU JMPr } LTH JMPr ");
+	StrBuf_append(a, out, "ROT SWP GTH ?{ GTH #00 EQU JMPr } LTH JMPr ");
 }
 
 void
-rer_emit_ne()
+rer_emit_ne(Arena *a, List *out)
 {
-	printf("NEQ2 ");
+	StrBuf_append(a, out, "NEQ2 ");
 }
 
 void
-rer_emit_eq()
+rer_emit_eq(Arena *a, List *out)
 {
-	printf("EQU2 ");
+	StrBuf_append(a, out, "EQU2 ");
 }
 
 void
-rer_emit_false()
+rer_emit_false(Arena *a, List *out)
 {
-	printf("#0000 ");
+	StrBuf_append(a, out, "#0000 ");
 }
 
 void
-rer_emit_true()
+rer_emit_true(Arena *a, List *out)
 {
-	printf("#0001 ");
+	StrBuf_append(a, out, "#0001 ");
 }
 
 void
-rer_emit_nil()
+rer_emit_nil(Arena *a, List *out)
 {
-	printf("#0000 ");
+	StrBuf_append(a, out, "#0000 ");
 }
 
 void
-rer_emit_neg()
+rer_emit_neg(Arena *a, List *out)
 {
-	printf("#0000 SUB2 ");
+	StrBuf_append(a, out, "#0000 SUB2 ");
 }
 
 void
-rer_emit_not()
+rer_emit_not(Arena *a, List *out)
 {
-	printf("#0000 EQU2 ");
+	StrBuf_append(a, out, "#0000 EQU2 ");
 }
 
 void
-rer_emit_void()
+rer_emit_void(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 u32
@@ -161,434 +166,517 @@ rer_get_size(SymbolType t)
 }
 
 void
-rer_emit_primitive_type(Symbol *sym, bool local)
+rer_emit_type(Arena *a, List *out, Symbol *sym, bool local)
 {
-	if(local)
+	if(local) {
-		if(sym->ref)
+		if(sym->ref) {
-			printf("STH2kr #%04x ADD2 STA2\n", sym->ref);
+			sprintf(rer_temp_strbuf, "\tSTH2kr #%04x ADD2 LDA2\n", sym->ref);
-		else
+			StrBuf_append(a, out, rer_temp_strbuf);
-			printf("STH2kr STA2\n");
+		} else {
-	else
+			sprintf(rer_temp_strbuf, "\tSTH2kr LDA2\n");
-		switch(sym->type) {
+			StrBuf_append(a, out, rer_temp_strbuf);
-		case SYMBOL_BOOL: {
-			printf("!{ @%.*s $2 } ", sym->name_length, sym->name);
-			break;
 		}
-		case SYMBOL_BYTE: {
+	} else {
-			printf("!{ @%.*s $1 } ", sym->name_length, sym->name);
+		sprintf(rer_temp_strbuf, "!{ @%.*s $%d } ", sym->name_length, sym->name,
-			break;
+						rer_get_size(sym->type));
-		}
+		StrBuf_append(a, out, rer_temp_strbuf);
-		case SYMBOL_INT: {
-			printf("!{ @%.*s $2 } ", sym->name_length, sym->name);
-			break;
-		}
-		case SYMBOL_NAT: {
-			printf("!{ @%.*s $2 } ", sym->name_length, sym->name);
-			break;
-		}
-		case SYMBOL_REAL: {
-			printf("!{ @%.*s $2 } ", sym->name_length, sym->name);
-			break;
-		}
-		case SYMBOL_STR: {
-			printf("!{ @%.*s $2 } ", sym->name_length, sym->name);
-			break;
-		}
-		case SYMBOL_U8: {
-			printf("!{ @%.*s $1 } ", sym->name_length, sym->name);
-			break;
-		}
-		case SYMBOL_I8: {
-			printf("!{ @%.*s $1 } ", sym->name_length, sym->name);
-			break;
-		}
-		case SYMBOL_I16: {
-			printf("!{ @%.*s $2 } ", sym->name_length, sym->name);
-			break;
-		}
-		case SYMBOL_U16: {
-			printf("!{ @%.*s $2 } ", sym->name_length, sym->name);
-			break;
-		}
-		case SYMBOL_I32: {
-			printf("!{ @%.*s $4 } ", sym->name_length, sym->name);
-			break;
-		}
-		case SYMBOL_U32: {
-			printf("!{ @%.*s $4 } ", sym->name_length, sym->name);
-			break;
-		}
-		case SYMBOL_F32: {
-			printf("!{ @%.*s $4 } ", sym->name_length, sym->name);
-			break;
-		}
-		default:
-			break;
 	}
 }
+
 void
-rer_emit_int(const char *str, i32 length)
+rer_emit_int(Arena *a, List *out, const char *str, i32 length)
 {
 	i32 i = (i32)strtol(str, nil, 10);
-	printf("#%04x ", i);
+	sprintf(rer_temp_strbuf, "#%04x ", i);
+	StrBuf_append(a, out, rer_temp_strbuf);
 	USED(length);
 }
 
 void
-rer_emit_nat(const char *str, i32 length)
+rer_emit_nat(Arena *a, List *out, const char *str, i32 length)
 {
 	u32 i = (u32)strtol(str, nil, 10);
-	printf("#%04x ", i);
+	sprintf(rer_temp_strbuf, "#%04x ", i);
+	StrBuf_append(a, out, rer_temp_strbuf);
 	USED(length);
 }
 
 void
-rer_emit_real(const char *str, i32 length)
+rer_emit_real(Arena *a, List *out, const char *str, i32 length)
 {
 	USED(str);
 	USED(length);
+	USED(a);
+	USED(out);
 	/// TODO: implement this
 }
 
 void
-rer_emit_byte(const char *str, i32 length)
+rer_emit_byte(Arena *a, List *out, const char *str, i32 length)
 {
 	u8 i = (u8)strtol(str, nil, 10);
-	printf("#%04x ", i);
+	sprintf(rer_temp_strbuf, "#%04x ", i);
+	StrBuf_append(a, out, rer_temp_strbuf);
 	USED(length);
 }
 
 void
-rer_emit_str(const char *str, i32 length)
+rer_emit_str(Arena *a, List *out, const char *str, i32 length)
 {
 	/* set a pointer to the string literal and then jump over it */
-	printf(";{ #0002 ADD2 } !{ ");
+	StrBuf_append(a, out, ";{ #0002 ADD2 } !{ ");
 
-	for(i32 i = 1; i < length - 1; i++) printf("%02x ", str[i]);
+	i32 i = 1;
+	while(i < length - 1) {
+		char c = str[i++];
+		if(c == '\\' && i < length - 1) {
+			switch(str[i++]) {
+			case 'n':
+				c = '\n';
+				break;
+			case 't':
+				c = '\t';
+				break;
+			case 'r':
+				c = '\r';
+				break;
+			case '\\':
+			case '"':
+			case '\'':
+				break;
+			default:
+				i--; /* Rewind for unknown escapes */
+			}
+		}
+		sprintf(rer_temp_strbuf, "%02x ", c);
+		StrBuf_append(a, out, rer_temp_strbuf);
+	}
 
-	printf("00 } ");
+	StrBuf_append(a, out, "00 } ");
 }
 
 void
-rer_emit_constant(Symbol *sym, bool local)
+rer_emit_constant(Arena *a, List *out, Symbol *sym, bool local)
 {
-	if(local)
+	if(local) {
-		if(sym->ref)
+		if(sym->ref) {
-			printf("\tSTH2kr #%04x ADD2 LDA2\n", sym->ref);
+			sprintf(rer_temp_strbuf, "\tSTH2kr #%04x ADD2 STA2\n", sym->ref);
-		else
+			StrBuf_append(a, out, rer_temp_strbuf);
-			printf("\tSTH2kr LDA2\n");
+		} else {
-	else
+			sprintf(rer_temp_strbuf, "\tSTH2kr STA2\n");
-		printf(";%.*s STA2 ", sym->name_length, sym->name);
+			StrBuf_append(a, out, rer_temp_strbuf);
+		}
+	} else {
+		sprintf(rer_temp_strbuf, ";%.*s STA2 ", sym->name_length, sym->name);
+		StrBuf_append(a, out, rer_temp_strbuf);
+	}
 }
 
 void
-rer_emit_array()
+rer_emit_array(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
+}
+
+bool
+rer_fn_loop_emit_args(Arena *a, List *out, void *data)
+{
+	Symbol *sym = ((Symbol *)data);
+
+	if(sym->ref) {
+		sprintf(rer_temp_strbuf, "\tSTH2kr #%04x ADD2 STA2\n", sym->ref);
+		StrBuf_append(a, out, rer_temp_strbuf);
+	} else {
+		sprintf(rer_temp_strbuf, "\tSTH2kr STA2\n");
+
+		StrBuf_append(a, out, rer_temp_strbuf);
+	}
+	return true;
+}
+
+bool
+rer_fn_loop_emit_args_comment(Arena *a, List *out, void *data)
+{
+	Symbol *sym = ((Symbol *)data);
+	sprintf(rer_temp_strbuf, "%.*s ", sym->name_length, sym->name);
+	StrBuf_append(a, out, rer_temp_strbuf);
+	return true;
 }
 
 void
-rer_emit_function(Symbol *sym)
+rer_emit_function(Arena *a, List *out, Symbol *sym)
 {
-  USED(sym);
+	sprintf(rer_temp_strbuf, "@%.*s_ ( ", sym->name_length, sym->name);
+	StrBuf_append(a, out, rer_temp_strbuf);
+	List_map_out(a, out, sym->args, rer_fn_loop_emit_args_comment);
+	sprintf(rer_temp_strbuf, " -- ");
+	StrBuf_append(a, out, rer_temp_strbuf);
+	if(sym->secondary_type != SYMBOL_UNDEFINED &&
+		 sym->secondary_type != SYMBOL_VOID) {
+		sprintf(rer_temp_strbuf, " res ");
+		StrBuf_append(a, out, rer_temp_strbuf);
+	}
+	sprintf(rer_temp_strbuf, ")\n");
+	StrBuf_append(a, out, rer_temp_strbuf);
+	if(sym->size > 0) {
+		sprintf(rer_temp_strbuf, "\tOVR2r LIT2r %04x SUB2r\n", sym->size);
+		StrBuf_append(a, out, rer_temp_strbuf);
+	}
+	List_map_out(a, out, sym->args, rer_fn_loop_emit_args);
+	StrBuf_append(a, out, "\n");
 }
 
 void
-rer_emit_arena_fn_return()
+rer_emit_arena_fn_return(Arena *a, List *out)
 {
-	printf("&return\n\t\tPOP2r JMP2r\n\n");
+	StrBuf_append(a, out, "\t&return\n\t\tPOP2r JMP2r\n\n");
 }
 
 void
-rer_emit_arena_fn_call(Symbol *sym)
+rer_emit_arena_fn_call(Arena *a, List *out, Symbol *sym)
 {
-  USED(sym);
+	sprintf(rer_temp_strbuf, "%.*s_ ", sym->name_length, sym->name);
+	StrBuf_append(a, out, rer_temp_strbuf);
 }
 
 void
-rer_emit_plex()
+rer_emit_plex(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-rer_emit_method()
+rer_emit_method(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-rer_emit_trait()
+rer_emit_trait(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-rer_emit_const()
+rer_emit_const(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-rer_emit_putchar()
+rer_emit_open_paren(Arena *a, List *out)
 {
-	printf("#18 DEO ");
+	USED(a);
+	USED(out);
 }
 
 void
-rer_emit_getchar()
+rer_emit_close_paren(Arena *a, List *out)
 {
-	printf("#12 DEI ");
+	USED(a);
+	USED(out);
 }
 
 void
-rer_emit_open_paren()
+rer_emit_variable(Arena *a, List *out, Symbol *sym, bool local)
 {
+	if(local) {
+		if(sym->ref) {
+			sprintf(rer_temp_strbuf, "\tSTH2kr #%04x ADD2 LDA2 ", sym->ref);
+			StrBuf_append(a, out, rer_temp_strbuf);
+		} else {
+			sprintf(rer_temp_strbuf, "\tSTH2kr LDA2 ");
+			StrBuf_append(a, out, rer_temp_strbuf);
+		}
+	} else {
+		sprintf(rer_temp_strbuf, ";%.*s LDA2 ", sym->name_length, sym->name);
+		StrBuf_append(a, out, rer_temp_strbuf);
+	}
 }
 
 void
-rer_emit_close_paren()
+rer_emit_set_variable(Arena *a, List *out, Symbol *sym, bool local)
 {
+	if(local) {
+		if(sym->ref) {
+			sprintf(rer_temp_strbuf, "\tSTH2kr #%04x ADD2 STA2 ", sym->ref);
+			StrBuf_append(a, out, rer_temp_strbuf);
+		} else {
+			sprintf(rer_temp_strbuf, "\tSTH2kr STA2 ");
+			StrBuf_append(a, out, rer_temp_strbuf);
+		}
+	} else {
+		sprintf(rer_temp_strbuf, ";%.*s STA2 ", sym->name_length, sym->name);
+		StrBuf_append(a, out, rer_temp_strbuf);
+	}
 }
 
 void
-rer_emit_variable(Symbol *sym, bool local)
+rer_emit_write(Arena *a, List *out)
 {
-	if(local)
+	USED(a);
-		if(sym->ref)
+	USED(out);
-			printf("STH2kr #%04x ADD2 LDA2 ", sym->ref);
-		else
-			printf("STH2kr LDA2 ");
-	else
-		printf(";%.*s LDA2 ", sym->name_length, sym->name);
 }
 
 void
-rer_emit_set_variable(Symbol *sym, bool local)
+rer_emit_read(Arena *a, List *out)
 {
-	if(local)
+	USED(a);
-		if(sym->ref)
+	USED(out);
-			printf("STH2kr #%04x ADD2 STA2 ", sym->ref);
-		else
-			printf("STH2kr STA2 ");
-	else
-		printf(";%.*s STA2 ", sym->name_length, sym->name);
 }
 
 void
-rer_emit_write()
+rer_emit_open(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-rer_emit_read()
+rer_emit_close(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-rer_emit_open()
+rer_emit_stat(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-rer_emit_close()
+rer_emit_end_statement(Arena *a, List *out)
 {
+	StrBuf_append(a, out, "\n");
 }
 
 void
-rer_emit_stat()
+rer_emit_set_value(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-rer_emit_end_statement()
+rer_emit_plex_def(Arena *a, List *out)
 {
-	printf("\n");
+	USED(a);
+	USED(out);
 }
 
 void
-rer_emit_set_value()
+rer_emit_cast_int_to_nat(Arena *a, List *out)
 {
+	StrBuf_append(a, out, "int_to_nat_ ");
 }
 
 void
-rer_emit_plex_def()
+rer_emit_cast_int_to_real(Arena *a, List *out)
 {
+	StrBuf_append(a, out, "int_to_real_ ");
 }
 
 void
-rer_emit_cast_int_to_nat()
+rer_emit_cast_int_to_str(Arena *a, List *out)
 {
-	printf("int_to_nat_ ");
+	StrBuf_append(a, out, "int_to_str_ ");
 }
 
 void
-rer_emit_cast_int_to_real()
+rer_emit_cast_nat_to_int(Arena *a, List *out)
 {
-	printf("int_to_real_ ");
+	StrBuf_append(a, out, "nat_to_int_ ");
 }
 
 void
-rer_emit_cast_int_to_str()
+rer_emit_cast_nat_to_real(Arena *a, List *out)
 {
-	printf("int_to_str_ ");
+	StrBuf_append(a, out, "nat_to_real_ ");
 }
 
 void
-rer_emit_cast_nat_to_int()
+rer_emit_cast_nat_to_str(Arena *a, List *out)
 {
-	printf("nat_to_int_ ");
+	StrBuf_append(a, out, "nat_to_str_ ");
 }
 
 void
-rer_emit_cast_nat_to_real()
+rer_emit_cast_real_to_int(Arena *a, List *out)
 {
-	printf("nat_to_real_ ");
+	StrBuf_append(a, out, "real_to_int_ ");
 }
 
 void
-rer_emit_cast_nat_to_str()
+rer_emit_cast_real_to_nat(Arena *a, List *out)
 {
-	printf("nat_to_str_ ");
+	StrBuf_append(a, out, "real_to_nat_ ");
 }
 
 void
-rer_emit_cast_real_to_int()
+rer_emit_cast_real_to_str(Arena *a, List *out)
 {
-	printf("real_to_int_ ");
+	StrBuf_append(a, out, "real_to_str_ ");
 }
 
 void
-rer_emit_cast_real_to_nat()
+rer_emit_strbuf_init(Arena *a, List *out)
 {
-	printf("real_to_nat_ ");
+	USED(a);
+	USED(out);
 }
 
 void
-rer_emit_cast_real_to_str()
+rer_emit_strbuf_append(Arena *a, List *out)
 {
-	printf("real_to_str_ ");
+	USED(a);
+	USED(out);
 }
 
 void
-rer_emit_strbuf_init()
+rer_emit_strbuf_to_str(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-rer_emit_strbuf_append()
+rer_emit_arena_fn_return_plex(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-rer_emit_strbuf_to_str()
+rer_emit_arena_fn_return_array(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-rer_emit_arena_fn_return_plex()
+rer_emit_arena_fn_return_strbuf(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-rer_emit_arena_fn_return_array()
+rer_emit_cast_str_to_int(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
+}
+void
+rer_emit_cast_str_to_nat(Arena *a, List *out)
+{
+	USED(a);
+	USED(out);
+}
+void
+rer_emit_cast_str_to_real(Arena *a, List *out)
+{
+	USED(a);
+	USED(out);
 }
 
 void
-rer_emit_arena_fn_return_strbuf()
+rer_emit_sll(Arena *a, List *out)
 {
+	StrBuf_append(a, out, "#40 SFT SFT ");
 }
 
 void
-rer_emit_cast_str_to_int()
+rer_emit_srl(Arena *a, List *out)
-{
-}
-void
-rer_emit_cast_str_to_nat()
-{
-}
-void
-rer_emit_cast_str_to_real()
 {
+	StrBuf_append(a, out, "SFT ");
 }
 
 void
-rer_emit_sll()
+rer_emit_xor(Arena *a, List *out)
 {
-	printf("#40 SFT SFT ");
+	StrBuf_append(a, out, "EOR2 ");
 }
 
 void
-rer_emit_srl()
+rer_emit_mod(Arena *a, List *out)
 {
-	printf("SFT ");
+	StrBuf_append(a, out, "DIV2k MUL2 SUB2 ");
+}
+void
+rer_emit_or(Arena *a, List *out)
+{
+	StrBuf_append(a, out, "ORA2 ");
 }
 
 void
-rer_emit_xor()
+rer_emit_and(Arena *a, List *out)
 {
-	printf("EOR2 ");
+	StrBuf_append(a, out, "AND2 ");
 }
 
 void
-rer_emit_mod()
+rer_emit_print(Arena *a, List *out)
 {
-	printf("DIV2k MUL2 SUB2 ");
+	StrBuf_append(a, out, "str/<print> ");
-}
-void
-rer_emit_or()
-{
-	printf("ORA2 ");
 }
 
 void
-rer_emit_and()
+rer_emit_if(Arena *a, List *out)
 {
-	printf("AND2 ");
+	StrBuf_append(a, out, "#03 JCN !{ \n");
 }
 
 void
-rer_emit_print()
+rer_emit_patch_if(Arena *a, List *out, i32 local_ifs)
 {
-	printf("str/<print> ");
+	sprintf(rer_temp_strbuf, "!&if_end.%d } ", local_ifs);
+	StrBuf_append(a, out, rer_temp_strbuf);
 }
 
 void
-rer_emit_if()
+rer_emit_patch_if_done(Arena *a, List *out, i32 local_ifs)
 {
-	printf("#03 JCN !{ \n");
+	sprintf(rer_temp_strbuf, "&if_end.%d \n", local_ifs);
+	StrBuf_append(a, out, rer_temp_strbuf);
 }
 
 void
-rer_emit_patch_if(i32 local_ifs)
+rer_emit_while(Arena *a, List *out, i32 local_whiles)
 {
-	printf("!&if_end.%d } ", local_ifs);
+	sprintf(rer_temp_strbuf, "&while.%d ", local_whiles);
+	StrBuf_append(a, out, rer_temp_strbuf);
 }
 
 void
-rer_emit_patch_if_done(i32 local_ifs)
+rer_emit_while_postfix(Arena *a, List *out)
 {
-	printf("&if_end.%d \n", local_ifs);
+	StrBuf_append(a, out, "#03 JCN !{ \n");
 }
 
 void
-rer_emit_while(i32 local_whiles)
+rer_emit_patch_while(Arena *a, List *out, i32 local_whiles)
 {
-	printf("&while.%d ", local_whiles);
+	sprintf(rer_temp_strbuf, "!&while.%d } \n", local_whiles);
+	StrBuf_append(a, out, rer_temp_strbuf);
 }
 
 void
-rer_emit_while_postfix()
+rer_emit_early_return(Arena *a, List *out)
 {
-	printf("#03 JCN !{ \n");
+	StrBuf_append(a, out, "!&return ");
 }
 
 void
-rer_emit_patch_while(i32 local_whiles)
+rer_emit_halt(Arena *a, List *out)
 {
-	printf("!&while.%d } \n", local_whiles);
+	StrBuf_append(a, out, "POP2r BRK ");
-}
-
-void
-rer_emit_halt()
-{
-	printf("POP2r BRK ");
 }
 
 Emitter
@@ -622,7 +710,7 @@ rer_emitter()
 			rer_emit_real,
 			rer_emit_byte,
 			rer_emit_str,
-			rer_emit_primitive_type,
+			rer_emit_type,
 			rer_emit_array,
 			rer_emit_function,
 			rer_emit_plex,
@@ -677,7 +765,7 @@ rer_emitter()
 			rer_emit_while,
 			rer_emit_while_postfix,
 			rer_emit_patch_while,
-			rer_emit_arena_fn_return,
+			rer_emit_early_return,
 			rer_emit_halt,
 	};
 }

emit/uxn/emit.c

@@ -2,6 +2,8 @@
 #include <stdio.h>
 #include <stdlib.h>
 
+char uxn_temp_strbuf[256];
+
 #define UXN_OP_2 (1 << 5)
 #define UXN_OP_R (1 << 6)
 #define UXN_OP_K (1 << 7)
@@ -44,7 +46,7 @@ enum uxn_opcode {
 	JMI = 0x40,
 	JSI = 0x60,
 };
-unsigned char emit_uxn_lib_undar_tal[] = {
+char emit_uxn_lib_undar_tal[] = {
 		0x40, 0x73, 0x65, 0x78, 0x74, 0x0a, 0x20, 0x20, 0x23, 0x38, 0x30, 0x20,
 		0x41, 0x4e, 0x44, 0x6b, 0x20, 0x45, 0x51, 0x55, 0x20, 0x23, 0x66, 0x66,
 		0x20, 0x4d, 0x55, 0x4c, 0x20, 0x53, 0x57, 0x50, 0x20, 0x4a, 0x4d, 0x50,
@@ -562,8 +564,7 @@ unsigned char emit_uxn_lib_undar_tal[] = {
 		0x49, 0x4e, 0x43, 0x32, 0x20, 0x21, 0x2f, 0x3c, 0x70, 0x72, 0x69, 0x6e,
 		0x74, 0x3e, 0x0a, 0x0a, 0x40, 0x6d, 0x65, 0x6d, 0x5f, 0x6c, 0x65, 0x6e,
 		0x67, 0x74, 0x68, 0x5f, 0x20, 0x23, 0x30, 0x30, 0x30, 0x30, 0x0a, 0x40,
-  0x6d,  0x65,  0x6d,  0x5f,  0x20,  0x20,  0x20,  0x20
+		0x6d, 0x65, 0x6d, 0x5f, 0x20, 0x20, 0x20, 0x20};
-};
 unsigned int emit_uxn_lib_undar_tal_len = 6212;
 
 void
@@ -580,111 +581,114 @@ uxn_mem(u32 a)
 }
 
 void
-uxn_prolog()
+uxn_prolog(Arena *a, List *out)
 {
-	/*printf("|100\n\tLIT2r 0000 main_ POP2r BRK\n\n");*/
+	/*StrBuf_append(a, out, "|100\n\tLIT2r 0000 main_ POP2r BRK\n\n");*/
-	printf("|100\n\tLIT2r 0000\n\n");
+	StrBuf_append(a, out, "|100\n\tLIT2r 0000\n\n");
 }
 
 void
-uxn_epilogue()
+uxn_epilogue(Arena *a, List *out)
 {
-	for(u32 i = 0; i < emit_uxn_lib_undar_tal_len; i++) putchar(emit_uxn_lib_undar_tal[i]);
+	StrBuf_append_exactly(a, out, emit_uxn_lib_undar_tal,
+												emit_uxn_lib_undar_tal_len);
 }
 
 void
-uxn_emit_add()
+uxn_emit_add(Arena *a, List *out)
 {
-	printf("ADD2 ");
+	StrBuf_append(a, out, "ADD2 ");
 }
 
 void
-uxn_emit_sub()
+uxn_emit_sub(Arena *a, List *out)
 {
-	printf("SUB2 ");
+	StrBuf_append(a, out, "SUB2 ");
 }
 
 void
-uxn_emit_mul()
+uxn_emit_mul(Arena *a, List *out)
 {
-	printf("MUL2 ");
+	StrBuf_append(a, out, "MUL2 ");
 }
 
 void
-uxn_emit_div()
+uxn_emit_div(Arena *a, List *out)
 {
-	printf("DIV2 ");
+	StrBuf_append(a, out, "DIV2 ");
 }
 
 void
-uxn_emit_lt()
+uxn_emit_lt(Arena *a, List *out)
 {
-	printf("LTH2 ");
+	StrBuf_append(a, out, "LTH2 ");
 }
 
 void
-uxn_emit_le()
+uxn_emit_le(Arena *a, List *out)
 {
-	printf("ROT SWP LTH ?{ LTH #00 EQU JMPr } GTH JMPr ");
+	StrBuf_append(a, out, "ROT SWP LTH ?{ LTH #00 EQU JMPr } GTH JMPr ");
 }
 
 void
-uxn_emit_gt()
+uxn_emit_gt(Arena *a, List *out)
 {
-	printf("GTH2 ");
+	StrBuf_append(a, out, "GTH2 ");
 }
 
 void
-uxn_emit_ge()
+uxn_emit_ge(Arena *a, List *out)
 {
-	printf("ROT SWP GTH ?{ GTH #00 EQU JMPr } LTH JMPr ");
+	StrBuf_append(a, out, "ROT SWP GTH ?{ GTH #00 EQU JMPr } LTH JMPr ");
 }
 
 void
-uxn_emit_ne()
+uxn_emit_ne(Arena *a, List *out)
 {
-	printf("NEQ2 ");
+	StrBuf_append(a, out, "NEQ2 ");
 }
 
 void
-uxn_emit_eq()
+uxn_emit_eq(Arena *a, List *out)
 {
-	printf("EQU2 ");
+	StrBuf_append(a, out, "EQU2 ");
 }
 
 void
-uxn_emit_false()
+uxn_emit_false(Arena *a, List *out)
 {
-	printf("#0000 ");
+	StrBuf_append(a, out, "#0000 ");
 }
 
 void
-uxn_emit_true()
+uxn_emit_true(Arena *a, List *out)
 {
-	printf("#0001 ");
+	StrBuf_append(a, out, "#0001 ");
 }
 
 void
-uxn_emit_nil()
+uxn_emit_nil(Arena *a, List *out)
 {
-	printf("#0000 ");
+	StrBuf_append(a, out, "#0000 ");
 }
 
 void
-uxn_emit_neg()
+uxn_emit_neg(Arena *a, List *out)
 {
-	printf("#0000 SUB2 ");
+	StrBuf_append(a, out, "#0000 SUB2 ");
 }
 
 void
-uxn_emit_not()
+uxn_emit_not(Arena *a, List *out)
 {
-	printf("#0000 EQU2 ");
+	StrBuf_append(a, out, "#0000 EQU2 ");
 }
 
 void
-uxn_emit_void()
+uxn_emit_void(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 u32
@@ -725,54 +729,65 @@ uxn_get_size(SymbolType t)
 }
 
 void
-uxn_emit_type(Symbol *sym, bool local)
+uxn_emit_type(Arena *a, List *out, Symbol *sym, bool local)
 {
-	if(local)
+	if(local) {
-		if(sym->ref)
+		if(sym->ref) {
-			printf("\tSTH2kr #%04x ADD2 LDA2\n", sym->ref);
+			sprintf(uxn_temp_strbuf, "\tSTH2kr #%04x ADD2 LDA2\n", sym->ref);
-		else
+			StrBuf_append(a, out, uxn_temp_strbuf);
-			printf("\tSTH2kr LDA2\n");
+		} else {
-	else
+			sprintf(uxn_temp_strbuf, "\tSTH2kr LDA2\n");
-		printf("!{ @%.*s $%d } ", sym->name_length, sym->name, uxn_get_size(sym->type));
+			StrBuf_append(a, out, uxn_temp_strbuf);
+		}
+	} else {
+		sprintf(uxn_temp_strbuf, "!{ @%.*s $%d } ", sym->name_length, sym->name,
+						uxn_get_size(sym->type));
+		StrBuf_append(a, out, uxn_temp_strbuf);
+	}
 }
 
 void
-uxn_emit_int(const char *str, i32 length)
+uxn_emit_int(Arena *a, List *out, const char *str, i32 length)
 {
 	i32 i = (i32)strtol(str, nil, 10);
-	printf("#%04x ", i);
+	sprintf(uxn_temp_strbuf, "#%04x ", i);
+	StrBuf_append(a, out, uxn_temp_strbuf);
 	USED(length);
 }
 
 void
-uxn_emit_nat(const char *str, i32 length)
+uxn_emit_nat(Arena *a, List *out, const char *str, i32 length)
 {
 	u32 i = (u32)strtol(str, nil, 10);
-	printf("#%04x ", i);
+	sprintf(uxn_temp_strbuf, "#%04x ", i);
+	StrBuf_append(a, out, uxn_temp_strbuf);
 	USED(length);
 }
 
 void
-uxn_emit_real(const char *str, i32 length)
+uxn_emit_real(Arena *a, List *out, const char *str, i32 length)
 {
+	USED(a);
+	USED(out);
 	USED(str);
 	USED(length);
 	/// TODO: implement this
 }
 
 void
-uxn_emit_byte(const char *str, i32 length)
+uxn_emit_byte(Arena *a, List *out, const char *str, i32 length)
 {
 	u8 i = (u8)strtol(str, nil, 10);
-	printf("#%04x ", i);
+	sprintf(uxn_temp_strbuf, "#%04x ", i);
+	StrBuf_append(a, out, uxn_temp_strbuf);
 	USED(length);
 }
 
 void
-uxn_emit_str(const char *str, i32 length)
+uxn_emit_str(Arena *a, List *out, const char *str, i32 length)
 {
 	/* set a pointer to the string literal and then jump over it */
-	printf(";{ #0002 ADD2 } !{ ");
+	StrBuf_append(a, out, ";{ #0002 ADD2 } !{ ");
 
 	i32 i = 1;
 	while(i < length - 1) {
@@ -796,356 +811,435 @@ uxn_emit_str(const char *str, i32 length)
 				i--; /* Rewind for unknown escapes */
 			}
 		}
-	  printf("%02x ", c);
+		sprintf(uxn_temp_strbuf, "%02x ", c);
+		StrBuf_append(a, out, uxn_temp_strbuf);
 	}
 
-	printf("00 } ");
+	StrBuf_append(a, out, "00 } ");
 }
 
 void
-uxn_emit_constant(Symbol *sym, bool local)
+uxn_emit_constant(Arena *a, List *out, Symbol *sym, bool local)
 {
-	if(local)
+	if(local) {
-		if(sym->ref)
+		if(sym->ref) {
-			printf("\tSTH2kr #%04x ADD2 STA2\n", sym->ref);
+			sprintf(uxn_temp_strbuf, "\tSTH2kr #%04x ADD2 STA2\n", sym->ref);
-		else
+			StrBuf_append(a, out, uxn_temp_strbuf);
-			printf("\tSTH2kr STA2\n");
+		} else {
-	else
+			sprintf(uxn_temp_strbuf, "\tSTH2kr STA2\n");
-		printf(";%.*s STA2 ", sym->name_length, sym->name);
+			StrBuf_append(a, out, uxn_temp_strbuf);
+		}
+	} else {
+		sprintf(uxn_temp_strbuf, ";%.*s STA2 ", sym->name_length, sym->name);
+		StrBuf_append(a, out, uxn_temp_strbuf);
+	}
 }
 
 void
-uxn_emit_array()
+uxn_emit_array(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 bool
-fn_loop_emit_args(void *data)
+fn_loop_emit_args(Arena *a, List *out, void *data)
 {
 	Symbol *sym = ((Symbol *)data);
 
-	if(sym->ref)
+	if(sym->ref) {
-		printf("\tSTH2kr #%04x ADD2 STA2\n", sym->ref);
+		sprintf(uxn_temp_strbuf, "\tSTH2kr #%04x ADD2 STA2\n", sym->ref);
-	else
+		StrBuf_append(a, out, uxn_temp_strbuf);
-		printf("\tSTH2kr STA2\n");
+	} else {
+		sprintf(uxn_temp_strbuf, "\tSTH2kr STA2\n");
+
+		StrBuf_append(a, out, uxn_temp_strbuf);
+	}
 	return true;
 }
 
 bool
-fn_loop_emit_args_comment(void *data)
+fn_loop_emit_args_comment(Arena *a, List *out, void *data)
 {
 	Symbol *sym = ((Symbol *)data);
-	printf("%.*s ", sym->name_length, sym->name);
+	sprintf(uxn_temp_strbuf, "%.*s ", sym->name_length, sym->name);
+	StrBuf_append(a, out, uxn_temp_strbuf);
 	return true;
 }
 
 void
-uxn_emit_function(Symbol *sym)
+uxn_emit_function(Arena *a, List *out, Symbol *sym)
 {
-	printf("@%.*s_ ( ", sym->name_length, sym->name);
+	sprintf(uxn_temp_strbuf, "@%.*s_ ( ", sym->name_length, sym->name);
-	List_map(sym->args, fn_loop_emit_args_comment);
+	StrBuf_append(a, out, uxn_temp_strbuf);
-	printf(" -- ");
+	List_map_out(a, out, sym->args, fn_loop_emit_args_comment);
+	sprintf(uxn_temp_strbuf, " -- ");
+	StrBuf_append(a, out, uxn_temp_strbuf);
 	if(sym->secondary_type != SYMBOL_UNDEFINED &&
-		 sym->secondary_type != SYMBOL_VOID)
+		 sym->secondary_type != SYMBOL_VOID) {
-		printf(" res ");
+		sprintf(uxn_temp_strbuf, " res ");
-	printf(")\n");
+		StrBuf_append(a, out, uxn_temp_strbuf);
-	if (sym->size > 0) 
+	}
-		printf("\tOVR2r LIT2r %04x SUB2r\n", sym->size);
+	sprintf(uxn_temp_strbuf, ")\n");
-	List_map(sym->args, fn_loop_emit_args);
+	StrBuf_append(a, out, uxn_temp_strbuf);
-	printf("\n");
+	if(sym->size > 0) {
+		sprintf(uxn_temp_strbuf, "\tOVR2r LIT2r %04x SUB2r\n", sym->size);
+		StrBuf_append(a, out, uxn_temp_strbuf);
+	}
+	List_map_out(a, out, sym->args, fn_loop_emit_args);
+	StrBuf_append(a, out, "\n");
 }
 
 void
-uxn_emit_arena_fn_return()
+uxn_emit_arena_fn_return(Arena *a, List *out)
 {
-	printf("\t&return\n\t\tPOP2r JMP2r\n\n");
+	StrBuf_append(a, out, "\t&return\n\t\tPOP2r JMP2r\n\n");
 }
 
 void
-uxn_emit_arena_fn_call(Symbol *sym)
+uxn_emit_arena_fn_call(Arena *a, List *out, Symbol *sym)
 {
-	printf("%.*s_ ", sym->name_length, sym->name);
+	sprintf(uxn_temp_strbuf, "%.*s_ ", sym->name_length, sym->name);
+	StrBuf_append(a, out, uxn_temp_strbuf);
 }
 
 void
-uxn_emit_plex()
+uxn_emit_plex(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-uxn_emit_method()
+uxn_emit_method(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-uxn_emit_trait()
+uxn_emit_trait(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-uxn_emit_const()
+uxn_emit_const(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-uxn_emit_open_paren()
+uxn_emit_open_paren(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-uxn_emit_close_paren()
+uxn_emit_close_paren(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-uxn_emit_variable(Symbol *sym, bool local)
+uxn_emit_variable(Arena *a, List *out, Symbol *sym, bool local)
 {
-	if(local)
+	if(local) {
-		if(sym->ref)
+		if(sym->ref) {
-			printf("\tSTH2kr #%04x ADD2 LDA2 ", sym->ref);
+			sprintf(uxn_temp_strbuf, "\tSTH2kr #%04x ADD2 LDA2 ", sym->ref);
-		else
+			StrBuf_append(a, out, uxn_temp_strbuf);
-			printf("\tSTH2kr LDA2 ");
+		} else {
-	else
+			sprintf(uxn_temp_strbuf, "\tSTH2kr LDA2 ");
-		printf(";%.*s LDA2 ", sym->name_length, sym->name);
+			StrBuf_append(a, out, uxn_temp_strbuf);
+		}
+	} else {
+		sprintf(uxn_temp_strbuf, ";%.*s LDA2 ", sym->name_length, sym->name);
+		StrBuf_append(a, out, uxn_temp_strbuf);
+	}
 }
 
 void
-uxn_emit_set_variable(Symbol *sym, bool local)
+uxn_emit_set_variable(Arena *a, List *out, Symbol *sym, bool local)
 {
-	if(local)
+	if(local) {
-		if(sym->ref)
+		if(sym->ref) {
-			printf("\tSTH2kr #%04x ADD2 STA2 ", sym->ref);
+			sprintf(uxn_temp_strbuf, "\tSTH2kr #%04x ADD2 STA2 ", sym->ref);
-		else
+			StrBuf_append(a, out, uxn_temp_strbuf);
-			printf("\tSTH2kr STA2 ");
+		} else {
-	else
+			sprintf(uxn_temp_strbuf, "\tSTH2kr STA2 ");
-		printf(";%.*s STA2 ", sym->name_length, sym->name);
+			StrBuf_append(a, out, uxn_temp_strbuf);
+		}
+	} else {
+		sprintf(uxn_temp_strbuf, ";%.*s STA2 ", sym->name_length, sym->name);
+		StrBuf_append(a, out, uxn_temp_strbuf);
+	}
 }
 
 void
-uxn_emit_write()
+uxn_emit_write(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-uxn_emit_read()
+uxn_emit_read(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-uxn_emit_open()
+uxn_emit_open(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-uxn_emit_close()
+uxn_emit_close(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-uxn_emit_stat()
+uxn_emit_stat(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-uxn_emit_end_statement()
+uxn_emit_end_statement(Arena *a, List *out)
 {
-	printf("\n");
+	StrBuf_append(a, out, "\n");
 }
 
 void
-uxn_emit_set_value()
+uxn_emit_set_value(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-uxn_emit_plex_def()
+uxn_emit_plex_def(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-uxn_emit_cast_int_to_nat()
+uxn_emit_cast_int_to_nat(Arena *a, List *out)
 {
-	printf("int_to_nat_ ");
+	StrBuf_append(a, out, "int_to_nat_ ");
 }
 
 void
-uxn_emit_cast_int_to_real()
+uxn_emit_cast_int_to_real(Arena *a, List *out)
 {
-	printf("int_to_real_ ");
+	StrBuf_append(a, out, "int_to_real_ ");
 }
 
 void
-uxn_emit_cast_int_to_str()
+uxn_emit_cast_int_to_str(Arena *a, List *out)
 {
-	printf("int_to_str_ ");
+	StrBuf_append(a, out, "int_to_str_ ");
 }
 
 void
-uxn_emit_cast_nat_to_int()
+uxn_emit_cast_nat_to_int(Arena *a, List *out)
 {
-	printf("nat_to_int_ ");
+	StrBuf_append(a, out, "nat_to_int_ ");
 }
 
 void
-uxn_emit_cast_nat_to_real()
+uxn_emit_cast_nat_to_real(Arena *a, List *out)
 {
-	printf("nat_to_real_ ");
+	StrBuf_append(a, out, "nat_to_real_ ");
 }
 
 void
-uxn_emit_cast_nat_to_str()
+uxn_emit_cast_nat_to_str(Arena *a, List *out)
 {
-	printf("nat_to_str_ ");
+	StrBuf_append(a, out, "nat_to_str_ ");
 }
 
 void
-uxn_emit_cast_real_to_int()
+uxn_emit_cast_real_to_int(Arena *a, List *out)
 {
-	printf("real_to_int_ ");
+	StrBuf_append(a, out, "real_to_int_ ");
 }
 
 void
-uxn_emit_cast_real_to_nat()
+uxn_emit_cast_real_to_nat(Arena *a, List *out)
 {
-	printf("real_to_nat_ ");
+	StrBuf_append(a, out, "real_to_nat_ ");
 }
 
 void
-uxn_emit_cast_real_to_str()
+uxn_emit_cast_real_to_str(Arena *a, List *out)
 {
-	printf("real_to_str_ ");
+	StrBuf_append(a, out, "real_to_str_ ");
 }
 
 void
-uxn_emit_strbuf_init()
+uxn_emit_strbuf_init(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-uxn_emit_strbuf_append()
+uxn_emit_strbuf_append(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-uxn_emit_strbuf_to_str()
+uxn_emit_strbuf_to_str(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-uxn_emit_arena_fn_return_plex()
+uxn_emit_arena_fn_return_plex(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-uxn_emit_arena_fn_return_array()
+uxn_emit_arena_fn_return_array(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-uxn_emit_arena_fn_return_strbuf()
+uxn_emit_arena_fn_return_strbuf(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-uxn_emit_cast_str_to_int()
+uxn_emit_cast_str_to_int(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 void
-uxn_emit_cast_str_to_nat()
+uxn_emit_cast_str_to_nat(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 void
-uxn_emit_cast_str_to_real()
+uxn_emit_cast_str_to_real(Arena *a, List *out)
 {
+	USED(a);
+	USED(out);
 }
 
 void
-uxn_emit_sll()
+uxn_emit_sll(Arena *a, List *out)
 {
-	printf("#40 SFT SFT ");
+	StrBuf_append(a, out, "#40 SFT SFT ");
 }
 
 void
-uxn_emit_srl()
+uxn_emit_srl(Arena *a, List *out)
 {
-	printf("SFT ");
+	StrBuf_append(a, out, "SFT ");
 }
 
 void
-uxn_emit_xor()
+uxn_emit_xor(Arena *a, List *out)
 {
-	printf("EOR2 ");
+	StrBuf_append(a, out, "EOR2 ");
 }
 
 void
-uxn_emit_mod()
+uxn_emit_mod(Arena *a, List *out)
 {
-	printf("DIV2k MUL2 SUB2 ");
+	StrBuf_append(a, out, "DIV2k MUL2 SUB2 ");
 }
 void
-uxn_emit_or()
+uxn_emit_or(Arena *a, List *out)
 {
-	printf("ORA2 ");
+	StrBuf_append(a, out, "ORA2 ");
 }
 
 void
-uxn_emit_and()
+uxn_emit_and(Arena *a, List *out)
 {
-	printf("AND2 ");
+	StrBuf_append(a, out, "AND2 ");
 }
 
 void
-uxn_emit_print()
+uxn_emit_print(Arena *a, List *out)
 {
-	printf("str/<print> ");
+	StrBuf_append(a, out, "str/<print> ");
 }
 
 void
-uxn_emit_if()
+uxn_emit_if(Arena *a, List *out)
 {
-	printf("#03 JCN !{ \n");
+	StrBuf_append(a, out, "#03 JCN !{ \n");
 }
 
 void
-uxn_emit_patch_if(i32 local_ifs)
+uxn_emit_patch_if(Arena *a, List *out, i32 local_ifs)
 {
-	printf("!&if_end.%d } ", local_ifs);
+	sprintf(uxn_temp_strbuf, "!&if_end.%d } ", local_ifs);
+	StrBuf_append(a, out, uxn_temp_strbuf);
 }
 
 void
-uxn_emit_patch_if_done(i32 local_ifs)
+uxn_emit_patch_if_done(Arena *a, List *out, i32 local_ifs)
 {
-	printf("&if_end.%d \n", local_ifs);
+	sprintf(uxn_temp_strbuf, "&if_end.%d \n", local_ifs);
+	StrBuf_append(a, out, uxn_temp_strbuf);
 }
 
 void
-uxn_emit_while(i32 local_whiles)
+uxn_emit_while(Arena *a, List *out, i32 local_whiles)
 {
-	printf("&while.%d ", local_whiles);
+	sprintf(uxn_temp_strbuf, "&while.%d ", local_whiles);
+	StrBuf_append(a, out, uxn_temp_strbuf);
 }
 
 void
-uxn_emit_while_postfix()
+uxn_emit_while_postfix(Arena *a, List *out)
 {
-	printf("#03 JCN !{ \n");
+	StrBuf_append(a, out, "#03 JCN !{ \n");
 }
 
 void
-uxn_emit_patch_while(i32 local_whiles)
+uxn_emit_patch_while(Arena *a, List *out, i32 local_whiles)
 {
-	printf("!&while.%d } \n", local_whiles);
+	sprintf(uxn_temp_strbuf, "!&while.%d } \n", local_whiles);
+	StrBuf_append(a, out, uxn_temp_strbuf);
 }
 
 void
-uxn_emit_early_return()
+uxn_emit_early_return(Arena *a, List *out)
 {
-	printf("!&return ");
+	StrBuf_append(a, out, "!&return ");
 }
 
 void
-uxn_emit_halt()
+uxn_emit_halt(Arena *a, List *out)
 {
-	printf("POP2r BRK ");
+	StrBuf_append(a, out, "POP2r BRK ");
 }
 
 Emitter

list.c

@@ -59,6 +59,19 @@ List_map(List *list, list_iter_fn func)
 	}
 }
 
+void
+List_map_out(Arena *a, List *out, List *list, list_iter_out_fn func)
+{
+	Node *curr;
+	if(!list || !func) return;
+
+	curr = list->head;
+	while(curr) {
+		if(!func(a, out, node_value(curr))) break;
+		curr = curr->next;
+	}
+}
+
 void *
 List_get(List *list, u32 index)
 {

list.h

@@ -18,11 +18,13 @@ struct list_s {
 
 typedef bool (*compare_fn)(void *data, void *target);
 typedef bool (*list_iter_fn)(void *data);
+typedef bool (*list_iter_out_fn)(Arena *a, List *out, void *data);
 
 List *List_init(Arena *arena);
 void *node_value(Node *n);
 void *List_push(Arena *arena, List *list, void *data, u32 data_size);
 void List_map(List *list, list_iter_fn func);
+void List_map_out(Arena *a, List *out, List *list, list_iter_out_fn func);
 void *List_find(List *list, compare_fn compare, void *target);
 void *List_get(List *list, u32 index);
 void List_set(List *list, u32 index, void *data, u32 size);

strbuf.c

@@ -1,9 +1,9 @@
 #include "strbuf.h"
 
-StrBuf *
+List *
 StrBuf_init(Arena *a)
 {
-    StrBuf *l = (StrBuf*)aalloc(a, sizeof(StrBuf));
+    List *l = (List*)aalloc(a, sizeof(List));
     if (!l) return nil;
 
     l->head = nil;
@@ -14,10 +14,8 @@ StrBuf_init(Arena *a)
 }
 
 void *
-StrBuf_append(Arena *a, StrBuf *buf, char *str)
+StrBuf_append_exactly(Arena *a, List *buf, char *str, u32 length)
 {
-    u32 length = slen(str);
-
     void *dest;
     void *ptr = aalloc(a, sizeof(Node) + length);
     Node *node = (Node *)ptr;
@@ -44,8 +42,14 @@ StrBuf_append(Arena *a, StrBuf *buf, char *str)
     return dest;
 }
 
+void *
+StrBuf_append(Arena *a, List *buf, char *str)
+{
+    return StrBuf_append_exactly(a, buf, str, slen(str));
+}
+
 char *
-StrBuf_toS(Arena *a, StrBuf *buf, u32 *out_length)
+StrBuf_toS(Arena *a, List *buf, u32 *out_length)
 {
 	Node *curr;
     char *tmp_str;

strbuf.h

@@ -3,15 +3,9 @@
 
 #include "list.h"
 
-typedef struct strbuf_s StrBuf;
+List *StrBuf_init(Arena *a);
-struct strbuf_s {
+void *StrBuf_append(Arena *a, List *buf, char *str);
-	Node *head;
+void *StrBuf_append_exactly(Arena *a, List *buf, char *str, u32 length);
-	Node *tail;
+char *StrBuf_toS(Arena *a, List *buf, u32 *out_length);
-	u32 count;
-};
-
-StrBuf *StrBuf_init(Arena *a);
-void *StrBuf_append(Arena *a, StrBuf *buf, char *str);
-char *StrBuf_toS(Arena *a, StrBuf *buf, u32 *out_length);
 
 #endif