wip more array defs

common.h

@@ -38,8 +38,8 @@ struct symbol_s {
   u32 ref; /* either constant value or pointer to other thing */
   u32 size; /* either size of the plex or length of the array/list/etc. */
   u32 scope; /* scope ref */
-  List *args; /* function params or plex constructor args */
-  List *fields; /* either plex variable fields, or method signatures */
+  List *args; /* function params or plex constructor args or array dimensions */
+  List *fields; /* either plex variable fields, or method signatures or array strides */
 };
 
 void *node_value(Node *n);

compiler.c

@@ -2,6 +2,7 @@
 #include "common.h"
 #include "emit.h"
 #include "lexer.h"
+#include "libc.h"
 #include "list.h"
 
 Emitter emitter = {0};
@@ -257,6 +258,67 @@ define_function()
 	fn->size = size;
 }
 
+void
+calculate_strides(List *dims, List *strides)
+{
+	u32 *num;
+	u32 i;
+	u32 num_dims = dims->count;
+	u32 current_stride = 1;
+
+	if (num_dims == 1) {
+		List_push(arena, strides, &current_stride, sizeof(u32));
+		return;		
+	}
+
+	for(i = num_dims - 1; i > 0; i--) {
+		List_push(arena, strides, &current_stride, sizeof(u32));
+
+		/* this is very slow but for small numbers of dimensions its fine */
+		num = (u32*)List_get(dims, i);
+		if (num){		
+			current_stride *= (*num);
+		} else {
+			emitter.error("Tried to get a dimension that did not exist", 43, parser.previous.line);
+		}
+	}
+}
+
+void
+define_array()
+{
+	i32 size = 0, n = 0, flat_array_length = 1;
+	TokenType tt = parser.previous.type;
+	SymbolType st = token_type_to_sym_type(tt);
+	Symbol *array;
+	
+	List *dims = List_init(arena);
+	List *strides = List_init(arena);
+	advance();
+
+	while(!match(TOKEN_RBRACKET)) {
+		if(parser.current.type == TOKEN_LITERAL_INT) {
+			n = ston(parser.current.start, parser.current.length);
+			flat_array_length *= n;
+			List_push(arena, dims, &n, sizeof(u32));
+		}
+		advance();
+		if(check(TOKEN_LBRACKET)) break;
+		if(check(TOKEN_COMMA)) {
+			/* it is a multidimensional array */
+		}
+	}
+
+	size = emitter.get_size(st) * flat_array_length;
+
+	array = scope_add_symbol(parser.current.start, parser.current.length,
+												SYMBOL_ARRAY, size);										
+	array->secondary_type = st;
+	calculate_strides(dims, strides);
+	array->args = dims;
+	array->fields = strides;
+}
+
 void
 build_symbol_table(char *source)
 {
@@ -276,6 +338,12 @@ build_symbol_table(char *source)
 			define_plex();
 		} else if(match(TOKEN_KEYWORD_TRAIT)) {
 			define_trait();
+		} else if (parser.current.type >= TOKEN_TYPE_I8 &&
+				 parser.current.type <= TOKEN_TYPE_PTR) {
+			advance();
+			if (check(TOKEN_LBRACKET)) {
+				define_array();
+			}
 		} else {
 			/* in binary bytecode output mode we need to count the bytes here */
 			/* otherwise ignore everything */
@@ -291,29 +359,6 @@ ParseRule *get_rule(TokenType type);
 void parse_precedence(Precedence precedence);
 
 
-void
-calculate_strides(i32 *dims, i32 num_dims, i32 *out_strides)
-{
-	i32 i;
-	i32 current_stride = 1;
-
-	for(i = num_dims - 1; i >= 0; i--) {
-		out_strides[i] = current_stride;
-		current_stride *= dims[i];
-	}
-}
-
-void
-define_array()
-{
-	/* example
-	i32 dims[3] = {3, 3, 3};
-	i32 strides[3];
-
-	calculate_strides(dims, 3, strides);
-	*/
-}
-
 u32
 variable_declaration(Symbol *def)
 {
@@ -322,33 +367,17 @@ variable_declaration(Symbol *def)
 	SymbolType st = token_type_to_sym_type(tt);
 	Symbol *variable;
 	
-	bool is_array = false;
-	i32 current_stride = 1;
-	List *strides;
-
-	if(parser.current.type == TOKEN_LBRACE) {
-		is_array = true;
-		strides = List_init(arena);
-
+   if (parser.current.type == TOKEN_LBRACE) {
 		while(!check(TOKEN_RBRACKET)) {
-		    if(parser.previous.type == TOKEN_LITERAL_NAT) {
-			  /* consume dimension if exists */			  
-			}
 			advance();
-			if(check(TOKEN_LBRACKET)) break;
-			advance();
-			if(check(TOKEN_COMMA)) {
-			  /* it is a multidimensional array */
-			}
 		}
 	}
-	USED(is_array);
 
 	if(st != SYMBOL_UNDEFINED) {
 		size = emitter.get_size(st);
 
-		variable =
-				scope_add_symbol(parser.current.start, parser.current.length, st, size);
+		variable = scope_add_symbol(parser.current.start, parser.current.length, st, size);
+
 		if(!def && (parser.pass == 0)) return size;
 
 		if(def) {

docs/SPECIFICATION.org

@@ -16,34 +16,10 @@ It is short for "Undarsċieppan" The name comes from the Proto-West-Germanic wor
 :PROPERTIES:
 :CUSTOM_ID: undar-grammar-and-specification
 :END:
-** Plexs
+
+** Primitive Types
 :PROPERTIES:
-:CUSTOM_ID: plexs
-:END:
-- A =plex= is a container for primitive types.
-- Not a class: no inheritance, no vtables
-- Methods are functions with implicit =this= argument
-
-#+begin_src ul
-plex «token» {
-  init() {
-    // values
-  }
-}
-
-// example
-plex Vec3 {
-  init(real x, real y, real z) {
-     this.x = x;
-     this.y = z;
-     this.y = z;
-  }
-}
-#+end_src ul
-
-*** Substantial Plexs
-:PROPERTIES:
-:CUSTOM_ID: substantial-plexs
+:CUSTOM_ID: primitive-types
 :END:
 
 | Type | Description                       |
@@ -127,7 +103,13 @@ if («token» is real) {
 }
 #+end_src ul
 
-also used for letting constants
+checks if a atom's plex contains the fields inside of a trait
+
+#+begin_src ul
+if («token» is [Tunnel, Drawable]) {
+  print("im tunnel-able and draw-able");
+}
+#+end_src ul
 
 =as=
 
@@ -140,18 +122,10 @@ some_functon(«token» as real); // needs a real
 
 =in=
 
-checks if a atom's plex contains the fields inside of a trait
+used inside of the for loops
 
 #+begin_src ul
-if («token» in Tunnel, Drawable) {
-  print("im tunnel-able and draw-able");
-}
-#+end_src ul
-
-also used inside of the for loops
-
-#+begin_src ul
-for («token» in «collection») { «body» }
+for («type» «token» in «collection») { «body» }
 #+end_src ul
 
 ** Control flow
@@ -170,7 +144,7 @@ for («variable» in «collection») { «body» }
 iterates through each atom in the collection setting it to variable
 
 #+begin_src ul
-for («variable» = initial_value; end_value; increment) { «body» }
+for («type» «variable» = initial_value; «boolean expression»; «increment») { «body» }
 #+end_src ul
 
 loops from initial value to end value by increment value (like a for loop in other languages)
@@ -248,6 +222,35 @@ Array of a specific plex
 «plex»[«length»] «variable» = [val1, val2, ...];
 #+end_src ul
 
+** Plexs
+:PROPERTIES:
+:CUSTOM_ID: plexs
+:END:
+- A =plex= is a container for primitive types.
+- Not a class: no inheritance, no vtables
+- Methods are functions with implicit =this= argument
+
+#+begin_src ul
+plex «token» {
+  init() {
+    // values
+  }
+}
+
+// example
+plex Vec3 {
+   real x; 
+   real y;
+   real z;
+
+  init(real x, real y, real z) {
+     this.x = x;
+     this.y = y;
+     this.z = z;
+  }
+}
+#+end_src ul
+
 ** Tunnel :WIP:
 :PROPERTIES:
 :CUSTOM_ID: tunnel-1

libc.c

@@ -328,3 +328,81 @@ real_to_string(Arena *a, r32 q)
 	return ascpy(a, buffer + i, MAX_LEN_REAL32 - i);
 }
 
+bool
+is_digit(char c)
+{
+	return c >= '0' && c <= '9';
+}
+
+bool 
+is_space(char c) 
+{
+	switch(c) {
+		case ' ':
+		case '\r':
+		case '\t':
+		case '\v':
+		case '\f':
+		case '\n':
+		return true;
+	}
+	return false;
+}
+
+i32 
+stoi(const char *str, u32 length) 
+{
+    bool neg = false;
+    i32 n = 0;
+
+    while (is_space(*str)) {
+        if (length-- == 0) return n;
+        str++;
+    }
+
+    if (*str == '-') {
+        neg = true;
+        if (length-- == 0) return n;
+        str++;
+    }
+
+    while (is_digit(*str) && length-- > 0) {
+        int digit = *str++ - '0';
+        
+        if (neg) {
+            if (n < (I32_MIN / 10) || (n == (I32_MIN / 10) && digit > -(I32_MIN % 10))) {
+                return I32_MIN;
+            }
+            n = n * 10 - digit;
+        } else {
+            if (n > (I32_MAX / 10) || (n == (I32_MAX / 10) && digit > (I32_MAX % 10))) {
+                return I32_MAX;
+            }
+            n = n * 10 + digit;
+        }
+    }
+
+    return neg ? -n : n;
+}
+
+u32 
+ston(const char *str, u32 length) 
+{
+    u32 n = 0;
+
+    while (is_space(*str)) {
+        if (length-- == 0) return n;
+        str++;
+    }
+
+    while (is_digit(*str) && length-- > 0) {
+        int digit = *str++ - '0';
+        
+        if (n > (U32_MAX / 10) || (n == (U32_MAX / 10) && digit > (U32_MAX % 10))) {
+            return U32_MAX;
+        }
+        n = n * 10 + digit;
+    }
+
+    return n;
+}

libc.h

@@ -57,7 +57,7 @@ typedef u8 bool;
 #define I16_MAX 32767
 #define U16_MAX 65535
 
-#define I32_MIN -2147483648
+#define I32_MIN -2147483647
 #define I32_MAX 2147483647
 #define U32_MAX 4294967295
 
@@ -66,7 +66,7 @@ typedef u8 bool;
 #define AS_INT(v) ((i32)(v))
 #define AS_NAT(v) ((u32)(v))
 #define AS_REAL(v) ((i32)(v))
-#define FLOAT_TO_REAL(v) (((i32)(v)) * FIXED_CONST)
+#define FLOAT_TO_REAL(v) ((i32)((v) * FIXED_CONST))
 #define REAL_TO_FLOAT(v) (((f32)(v)) / FIXED_CONST)
 
 #define USED(x) ((void)(x))
@@ -132,5 +132,7 @@ r32 real_abs(r32 f);
 char *int_to_string(Arena *a, i32 v);
 char *nat_to_string(Arena *a, u32 v);
 char *real_to_string(Arena *a, r32 q);
+i32 stoi(const char *str, u32 len);
+u32 ston(const char *str, u32 len);
 
 #endif

test/array.ul

@@ -2,17 +2,16 @@
 nat[6] fixed_size = [1, 2, 3, 4, 5, 6];
 
 nat i = 0;
-nat len = array.length;
-while (i < len) {
-   print(array[i] as str);
-   print("\n");
+while (i < fixed_size.length) {
+   print(fixed_size[i] as str);
+   print(" ");
    i = i + 1;
 }
 print("\n");
 
-for (i in array) {
-   print(i as str);
-   print("\n");
-}
+// for (i in fixed_size) {
+//    print(i as str);
+//    print("\n");
+// }
 
 halt;

test/mat-search.ul

@@ -17,12 +17,12 @@ bool found = false;
 for (nat x = 0; x < xSize; x++) {
   for (nat y = 0; y < ySize; y++) {
     for (nat z = 0; z < zSize; z++) {
-      if (matrix[x][y][z] == 0) {
-        print("found: [");
+      if (matrix[x, y, z] == 0) {
+        print("found '0' at [");
         print(x as str);
-        print(",");
+        print(", ");
         print(y as str);
-        print(",");
+        print(", ");
         print(z as str);
         print("]\n");
         found = true;

test/paint.ul

@@ -47,7 +47,7 @@ System system = devmap(0x00, System);
 Screen screen = devmap(0x20, Screen);
 screen.vector = ref render_screen;
 Mouse mouse = devmap(0x90, Mouse);
-mouse.vector = ref render_screen;
+mouse.vector = ref on_mouse_down;
 halt;
 
 function on_mouse_down() {