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Cello High Level C

Examples

Usage

var s0 = $(String, "Hello");
var s1 = new(String, $S("Hello"));
append(s1, $S(" There"));
show(s0); /* Hello */
show(s1); /* Hello There */

Manipulation

var s0 = new(String, $S("Balloons"));

show($I(len(s0))); /* 8 */
show($I(mem(s0, $S("Ball"))));     /* 1 */
show($I(mem(s0, $S("oon"))));      /* 1 */
show($I(mem(s0, $S("Balloons")))); /* 1 */
show($I(mem(s0, $S("l"))));        /* 1 */

rem(s0, $S("oons"));

show($I(eq(s0, $S("Ball")))); /* 1 */

resize(s0, 0);

show($I(len(s0))); /* 0 */
show($I(eq(s0, $S("")))); /* 1 */

String

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String Object

The String type is a wrapper around the native C string type. This includes strings that are allocated on either the Stack or the Heap.

For strings allocated on the heap a number of extra operations are provided overs standard C strings such as concatenation.

Definition

struct String {
  char* val;
};

Derives

• Alloc$ alloc dealloc
• Castcast
• Copycopy
• Sizesize
• Swapswap

Implements

• Assignassign
• C_Strc_str
• Cmpcmp eq neq gt lt ge le
• Concatappend concat
• Docname brief description definition
• Formatformat_to format_from
• Getget set mem rem key_type val_type
• Hashhash hash_data
• Lenlen
• Newnew del construct destruct
• Resizeresize
• Showshow look print scan

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