parser

parser/parser.go

@@ -4,14 +4,31 @@ import (
 	"github.com/wyst-lang/wyst/tokenizer"
 )
 
-func Parse(code string, rule Rule) ([]AstNode, tokenizer.State, error) {
-	tokens, state, _ := tokenizer.Tokenize(code)
+func Parse(code string, rule_set []Rule) ([]AstNode, tokenizer.State, error) {
 	var ast = []AstNode{}
+	tokens, state, err := tokenizer.Tokenize(code)
 	for i := 0; i < len(tokens); i++ {
-		// token := tokens[i]
-		if rule.Inner == (String{""}) {
-			
+		for r := 0; r < len(rule_set); r++ {
+			matching := false
+			var match_nodes = []AstNode{}
+			for v := 0; v < len(rule_set[r].Inner); v++ {
+				if len(tokens)-i > v && tokens[i].Rule.Name == rule_set[r].Inner[v].Name {
+					matching = true
+					match_nodes = append(match_nodes, AstNode{Rule: rule_set[r].Inner[v]})
+				} else {
+					matching = false
+					break
+				}
+			}
+			if matching {
+				ast = append(ast, AstNode{Rule: rule_set[r], Inner: match_nodes})
+				i += len(match_nodes) - 1
+				break
+			}
 		}
 	}
+	if err != nil {
+		return ast, state, err
+	}
 	return ast, state, nil
 }