fix contract exceptd check (#22)

diff --git a/compiler/parse.go b/compiler/parse.go
index 4848aee..956825e 100644 (file)
--- a/compiler/parse.go
+++ b/compiler/parse.go
@@ -48,6 +48,10 @@ func parse(buf []byte) (contracts []*Contract, err error) {
 
 func parseContracts(p *parser) []*Contract {
        var result []*Contract
+       if pos := scanKeyword(p.buf, p.pos, "contract"); pos < 0 {
+               p.errorf("expected contract")
+       }
+
        for peekKeyword(p) == "contract" {
                contract := parseContract(p)
                result = append(result, contract)