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lrettigpoemm
lrettig
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poemm
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add assemblyscript
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‎AssemblyScript/README.md‎

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Contents:
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```
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wrc20.ts AssemblyScript source code for wrc20.
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wrc20.wasm Compiled WebAssembly for wrc20.
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wrc20.wat Text version of wrc20.wasm.
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```
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For compilation instructions and updates to the source code, see: https://github.com/ewasm/assemblyscript-ewasm-api .
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‎AssemblyScript/wrc20.ts‎

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const DEBUG = false;
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// ewasm main function
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export function main(): void {
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// assume the memory is already expanded..
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// ethereum_return(0, ethereum_callDataSize())
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// Make sure we have enough args
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if (getCallDataSize() < 4)
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revert(0, 0);
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var ptrSelector = <i32>allocate_memory(4);
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callDataCopy(ptrSelector, 0, 4);
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var selector = load<i32>(ptrSelector);
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switch(selector) {
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case 0x9993021a:
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do_balance();
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break;
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case 0x5d359fbd:
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do_transfer();
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break;
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default:
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revert(0, 0);
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}
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}
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function do_balance(): void {
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if (getCallDataSize() !== 24)
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revert(0, 0);
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var ptrAddress = <i32>allocate_memory(20);
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callDataCopy(ptrAddress, 4, 20);
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var ptrBalance = <i32>allocate_memory(32);
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storageLoad(ptrAddress, ptrBalance);
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if (DEBUG) {
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printMemHex(ptrAddress, 32);
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printMemHex(ptrBalance, 32);
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}
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finish(ptrBalance, 32);
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}
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function do_transfer(): void {
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if (getCallDataSize() !== 32)
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revert(0, 0);
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var ptrSender = <i32>allocate_memory(32);
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getCaller(ptrSender);
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var ptrRecipient = <i32>allocate_memory(32);
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callDataCopy(ptrRecipient, 4, 20);
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var ptrValue = <i32>allocate_memory(32);
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callDataCopy(ptrValue, 24, 8);
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// debug_printMemHex(ptrValue, 32);
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var ptrSenderBalance = <i32>allocate_memory(32);
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var ptrRecipientBalance = <i32>allocate_memory(32);
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storageLoad(ptrSender, ptrSenderBalance);
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storageLoad(ptrRecipient, ptrRecipientBalance);
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if (DEBUG) {
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printMemHex(ptrSender, 32);
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printMemHex(ptrRecipient, 32);
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printMemHex(ptrSenderBalance, 32);
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printMemHex(ptrRecipientBalance, 32);
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}
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var senderBalance = load<i32>(ptrSenderBalance);
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var recipientBalance = load<i32>(ptrRecipientBalance);
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var value = load<i32>(ptrValue);
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if (senderBalance < value)
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revert(0, 0);
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store<i32>(ptrSenderBalance, senderBalance - value);
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store<i32>(ptrRecipientBalance, recipientBalance + value);
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storageStore(ptrSender, ptrSenderBalance);
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storageStore(ptrRecipient, ptrRecipientBalance);
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}

‎AssemblyScript/wrc20.wasm‎

781 Bytes
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‎AssemblyScript/wrc20.wat‎

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(module
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(type (;0;) (func))
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(type (;1;) (func (result i32)))
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(type (;2;) (func (param i32 i32)))
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(type (;3;) (func (param i32) (result i32)))
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(type (;4;) (func (param i32 i32 i32)))
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(type (;5;) (func (param i32)))
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(import "ethereum" "getCallDataSize" (func (;0;) (type 1)))
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(import "ethereum" "revert" (func (;1;) (type 2)))
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(import "ethereum" "callDataCopy" (func (;2;) (type 4)))
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(import "ethereum" "storageLoad" (func (;3;) (type 2)))
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(import "ethereum" "return" (func (;4;) (type 2)))
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(import "ethereum" "getCaller" (func (;5;) (type 5)))
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(import "ethereum" "storageStore" (func (;6;) (type 2)))
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(import "debug" "printMemHex" (func (;7;) (type 2)))
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(func (;8;) (type 3) (param i32) (result i32)
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(local i32 i32 i32 i32 i32 i32)
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get_local 0
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if ;; label = @1
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get_local 0
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i32.const 1073741824
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i32.gt_u
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if ;; label = @2
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unreachable
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end
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get_global 5
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set_local 1
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get_local 1
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get_local 0
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i32.add
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i32.const 7
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i32.add
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i32.const 7
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i32.const -1
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i32.xor
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i32.and
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set_local 2
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memory.size
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set_local 3
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get_local 2
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get_local 3
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i32.const 16
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i32.shl
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i32.gt_u
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if ;; label = @2
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get_local 2
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get_local 1
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i32.sub
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i32.const 65535
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i32.add
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i32.const 65535
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i32.const -1
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i32.xor
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i32.and
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i32.const 16
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i32.shr_u
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set_local 4
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get_local 3
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tee_local 5
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get_local 4
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tee_local 6
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get_local 5
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get_local 6
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i32.gt_s
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select
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set_local 5
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get_local 5
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memory.grow
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i32.const 0
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i32.lt_s
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if ;; label = @3
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get_local 4
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memory.grow
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i32.const 0
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i32.lt_s
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if ;; label = @4
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unreachable
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end
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end
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end
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get_local 2
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set_global 5
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get_local 1
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return
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end
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i32.const 0)
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(func (;9;) (type 0)
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(local i32 i32)
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call 0
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i32.const 24
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i32.ne
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if ;; label = @1
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i32.const 0
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i32.const 0
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call 1
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end
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i32.const 20
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call 8
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set_local 0
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get_local 0
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i32.const 4
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i32.const 20
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call 2
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i32.const 32
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call 8
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set_local 1
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get_local 0
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get_local 1
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call 3
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get_local 0
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i32.const 32
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call 7
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get_local 1
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i32.const 32
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call 7
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get_local 1
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i32.const 32
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call 4)
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(func (;10;) (type 0)
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(local i32 i32 i32 i32 i32 i32 i32 i32)
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call 0
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i32.const 32
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i32.ne
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if ;; label = @1
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i32.const 0
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i32.const 0
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call 1
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end
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i32.const 32
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call 8
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set_local 0
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get_local 0
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call 5
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i32.const 32
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call 8
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set_local 1
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get_local 1
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i32.const 4
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i32.const 20
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call 2
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i32.const 32
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call 8
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set_local 2
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get_local 2
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i32.const 24
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i32.const 8
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call 2
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get_local 2
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i32.const 32
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call 7
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i32.const 32
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call 8
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set_local 3
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i32.const 32
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call 8
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set_local 4
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get_local 0
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get_local 3
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call 3
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get_local 1
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get_local 4
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call 3
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get_local 0
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i32.const 32
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call 7
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get_local 1
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i32.const 32
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call 7
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get_local 3
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i32.const 32
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call 7
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get_local 4
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i32.const 32
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call 7
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get_local 3
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i32.load
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set_local 5
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get_local 4
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i32.load
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set_local 6
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get_local 2
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i32.load
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set_local 7
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get_local 5
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get_local 7
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i32.lt_s
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if ;; label = @1
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i32.const 0
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i32.const 0
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call 1
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end
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get_local 3
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get_local 5
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get_local 7
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i32.sub
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i32.store
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get_local 4
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get_local 6
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get_local 7
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i32.add
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i32.store
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get_local 0
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get_local 3
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call 6
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get_local 1
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get_local 4
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call 6)
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(func (;11;) (type 0)
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(local i32 i32 i32)
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call 0
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i32.const 4
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i32.lt_s
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if ;; label = @1
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i32.const 0
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i32.const 0
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call 1
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end
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i32.const 4
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call 8
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set_local 0
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get_local 0
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i32.const 0
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i32.const 4
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call 2
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get_local 0
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i32.load
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set_local 1
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block ;; label = @1
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block ;; label = @2
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block ;; label = @3
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block ;; label = @4
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get_local 1
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set_local 2
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get_local 2
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i32.const -1718418918
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i32.eq
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br_if 0 (;@4;)
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get_local 2
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i32.const 1563795389
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i32.eq
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br_if 1 (;@3;)
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br 2 (;@2;)
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end
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call 9
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br 2 (;@1;)
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end
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call 10
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br 1 (;@1;)
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end
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i32.const 0
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i32.const 0
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call 1
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end)
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(func (;12;) (type 0)
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get_global 6
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i32.const 7
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i32.add
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i32.const 7
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i32.const -1
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i32.xor
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i32.and
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set_global 4
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get_global 4
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set_global 5)
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(memory (;0;) 1)
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(global (;0;) i32 (i32.const 3))
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(global (;1;) i32 (i32.const 8))
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(global (;2;) i32 (i32.const 7))
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(global (;3;) i32 (i32.const 1073741824))
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(global (;4;) (mut i32) (i32.const 0))
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(global (;5;) (mut i32) (i32.const 0))
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(global (;6;) i32 (i32.const 8))
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(export "main" (func 11))
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(export "memory" (memory 0))
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(start 12))

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