fixing issue with ParseProgram returning multiple values

Author: dfirebaugh

compiler/compiler.go

@@ -5,6 +5,7 @@ import (
 	"github.com/dfirebaugh/punch/emitters/wat"
 	"github.com/dfirebaugh/punch/lexer"
 	"github.com/dfirebaugh/punch/parser"
+	"github.com/sirupsen/logrus"
 )
 
 const (
@@ -15,7 +16,11 @@ const (
 func Compile(filename string, source string) (string, []byte, string) {
 	l := lexer.New(filename, source)
 	p := parser.New(l)
-	program := p.ParseProgram(filename)
+	program, err := p.ParseProgram(filename)
+	if err != nil {
+		logrus.Error(err)
+		return "", nil, ""
+	}
 	var ast string
 	wat := wat.GenerateWAT(program, true)
 	if !astDisabled {

examples/struct.pun

@@ -1,5 +1,9 @@
 pkg main
 
+import (
+
+)
+
 struct extra {
   str note
 }
@@ -39,5 +43,21 @@ fn send_message() {
   println(msg.other.extra.note)
 }
 
-send_message()
 
+message get_message() {
+  message msg = message {
+    sender: 2,
+    receiver: 4,
+    body: "hello, world",
+    other: other {
+      message: "hello",
+      extra: extra {
+        note: "this is extra info",
+      },
+    },
+  }
+  return msg
+}
+
+message msg = get_message()
+println(msg)

parser/parsers.go

@@ -315,7 +315,7 @@ func (p *Parser) parseIfStatement() (*ast.IfStatement, error) {
 	}
 
 	if !p.expectCurrentTokenIs(token.LBRACE) {
-		return nil, p.errorf("expecting current token is a '{'", p.curToken.Literal, p.peekToken.Literal)
+		return nil, p.error("expecting current token is a '{'", p.curToken.Literal, p.peekToken.Literal)
 	}
 	stmt.Consequence, err = p.parseBlockStatement()
 	if err != nil {

repl/repl.go

@@ -67,7 +67,11 @@ func (repl *REPL) handleLine(line string) bool {
 		fmt.Fprintf(repl.out, "Command entered: %s\n", line)
 		l := lexer.New("repl", line)
 		p := parser.New(l)
-		program := p.ParseProgram("repl")
+		program, err := p.ParseProgram("repl")
+		if err != nil {
+			println(err.Error())
+			return true
+		}
 
 		println("ast:")
 		json, err := program.JSONPretty()