quite a few fixes, overall repo cleanup and some restructurization in the stdlib

tests/call_syntax_parens.expected

@@ -1,2 +0,0 @@
-42
-3

tests/call_syntax_parens.sl

@@ -1,16 +0,0 @@
-import ../stdlib/stdlib.sl
-import ../stdlib/io.sl
-import ../fn.sl
-
-word main
-    2 40 +
-    puti cr
-    extend-syntax
-    foo(1, 2)
-    puti cr
-    0
-end
-
-fn foo(int a, int b){
-    return a + b;
-}

tests/call_syntax_parens.test

@@ -1 +0,0 @@
-python main.py tests/call_syntax_parens.sl -o /tmp/call_syntax_parens > /dev/null && /tmp/call_syntax_parens

tests/integration_core.expected

@@ -30,4 +30,3 @@
 111
 222
 16
-70

tests/integration_core.sl

@@ -1,6 +1,5 @@
 import ../stdlib/stdlib.sl
 import ../stdlib/io.sl
-import ../fn.sl
 
 :asm mem-slot {
     lea rax, [rel print_buf]
@@ -33,12 +32,6 @@ struct: Point
     field y 8
 ;struct
 
-extend-syntax
-
-fn fancy_add(int a, int b){
-    return (a + b) * b;
-}
-
 word test-add
     5 7 + puti cr
 end
@@ -161,13 +154,6 @@ word test-cmp
     4 5 >= puti cr
 end
 
-word test-c-fn
-    3
-    7
-    fancy_add()
-    puti cr
-end
-
 word main
     test-add
     test-sub
@@ -186,6 +172,5 @@ word main
     test-for-zero
     test-cmp
     test-struct
-    test-c-fn
     0
 end

tests/str.expected

@@ -0,0 +1,4 @@
+1
+g
+g
+hello world hello world hello world hello world hello world

tests/str.sl

@@ -0,0 +1,15 @@
+import stdlib.sl
+
+word main
+    "g" "g"
+    strcmp
+    puti cr
+    puts
+    puts
+
+    "hello world hello world hello " "world hello world hello world"
+    strconcat
+    2dup
+    puts
+    free
+end

tests/str.test

@@ -0,0 +1 @@
+python main.py tests/str.sl -o /tmp/str > /dev/null && /tmp/str

tests/typeconversion.expected

@@ -0,0 +1,2 @@
+1235
+1235

tests/typeconversion.sl

@@ -0,0 +1,9 @@
+import stdlib.sl
+
+word main
+    "1234" toint 1 + dup puti cr
+    tostr
+    2dup
+    puts
+    free
+end

tests/typeconversion.test

@@ -0,0 +1 @@
+python main.py tests/typeconversion.sl -o /tmp/typeconversion > /dev/null && /tmp/typeconversion

tests/word_syntax.expected

@@ -1 +0,0 @@
-7

tests/word_syntax.sl

@@ -1,12 +0,0 @@
-import ../stdlib/stdlib.sl
-import ../stdlib/io.sl
-
-word add-two
-    +
-end
-
-word main
-    3 4 add-two
-    puti cr
-    0
-end

tests/word_syntax.test

@@ -1 +0,0 @@
-python main.py tests/word_syntax.sl -o /tmp/word_syntax > /dev/null && /tmp/word_syntax