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compiler: support panic in source

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In situations where VM's FAULT state needs to be reached,
panic function can be used. It compiles to THROW instruction.
This commit is contained in:
Evgenii Stratonikov 2020-01-28 17:18:38 +03:00
parent a839efb35e
commit d2326a8b96
3 changed files with 89 additions and 0 deletions
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11
pkg/compiler/codegen.go
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@ -770,6 +770,17 @@ func (c *codegen) convertBuiltin(expr *ast.CallExpr) {
emitOpcode(c.prog.BinWriter, opcode.XSWAP)
emitOpcode(c.prog.BinWriter, opcode.APPEND)
}
case "panic":
arg := expr.Args[0]
if isExprNil(arg) {
emitOpcode(c.prog.BinWriter, opcode.DROP)
emitOpcode(c.prog.BinWriter, opcode.THROW)
} else if isStringType(c.typeInfo.Types[arg].Type) {
emitSyscall(c.prog.BinWriter, "Neo.Runtime.Log")
emitOpcode(c.prog.BinWriter, opcode.THROW)
} else {
c.prog.Err = errors.New("panic should have string or nil argument")
}
case "SHA256":
emitOpcode(c.prog.BinWriter, opcode.SHA256)
case "SHA1":