nitron

diff --git a/basic/source/state.c b/basic/source/state.c
index 55624aa6df580199d918e24fb0d8447f3707c3f2..5ff9b2f7f9561d45ce33f7bc492c275b9b584345 100644
--- a/basic/source/state.c
+++ b/basic/source/state.c
@@ -5,6 +5,7 @@ #include "util.h"
 #include "state.h"
 #include "parser.h"
 #include "string.h"
+#include "import.h"
 #include "semanticAnalysis.h"
 
 State state;
@@ -160,6 +161,8 @@ 	Parser parser = Parser_Init(file, path, false);
 
 	size_t len;
 	Node*  nodes = Parser_Parse(&parser, &len);
+
+	Import_Run(nodes, len);
 
 	for (size_t i = 0; i < len; ++ i) {
 		SemanticAnalysis_SetExternal(true);




diff --git a/basic-std/std/mem.bas b/basic-std/std/mem.bas
new file mode 100644
index 0000000000000000000000000000000000000000..25116bfde015fdf02583151d7a2615640968e141
--- /dev/null
+++ b/basic-std/std/mem.bas
@@ -0,0 +1,10 @@
+'NITRON
+
+sub CopyMem(dest as ptr(u8), src as ptr(u8), size as uint)
+	dim i as uint
+
+	while i < size do
+		dest[i] = src[i]
+		i = i + 1
+	end
+end




diff --git a/basic-std/std/stringBuilder.bas b/basic-std/std/stringBuilder.bas
new file mode 100644
index 0000000000000000000000000000000000000000..1f9000e5f832f416c157a39c26c6001495bd5599
--- /dev/null
+++ b/basic-std/std/stringBuilder.bas
@@ -0,0 +1,49 @@
+'NITRON
+
+import mem
+import heap
+import stringView
+
+type StringBuilder
+	string   as ptr(char)
+	length   as uint
+	capacity as uint
+end
+
+sub StringBuilder_Init(this as ptr(StringBuilder))
+	this.string   = Alloc(8) as ptr(char)
+	this.length   = 0
+	this.capacity = 8
+end
+
+sub StringBuilder_Free(this as ptr(StringBuilder))
+	Free(this.string as ptr(unit))
+	this.string   = null as ptr(char)
+	this.length   = 0
+	this.capacity = 0
+end
+
+private sub IncreaseCapacity(this as ptr(StringBuilder))
+	while this.length <= this.capacity do
+		this.capacity = this.capacity * 2
+	end
+
+	this.string = ReAlloc(this.string as ptr(unit), this.capacity) as ptr(char)
+end
+
+sub StringBuilder_AddSV(this as ptr(StringBuilder), sv as ptr(StringView))
+	dim dest as ptr(char)
+
+	dest        = &this.string[this.length]
+	this.length = this.length + sv.Length()
+
+	IncreaseCapacity(this)
+
+	CopyMem(dest as ptr(u8), sv.string as ptr(u8), sv.Size())
+end
+
+sub StringBuilder_AddNTStr(this as ptr(StringBuilder), string as ptr(char))
+	dim sv as StringView
+	sv.FromNTStr(string)
+	this.AddSV(&sv)
+end




diff --git a/basic-std/std/stringView.bas b/basic-std/std/stringView.bas
index 4277a4b9d3b316d3a347ee4c0eb5d70a1de3bd7d..07aacfac3b3aa797a47e8e8ff0f089727b7e82fe 100644
--- a/basic-std/std/stringView.bas
+++ b/basic-std/std/stringView.bas
@@ -33,7 +33,13 @@
 	return this.string[index] as u32
 end
 
+' Number of characters in string
 func StringView_Length(this as ptr(StringView)) uint
+	return this.length
+end
+
+' Number of bytes in string
+func StringView_Size(this as ptr(StringView)) uint
 	return this.length
 end