harec

commit f5f932d9c15fb8a2ee31f9872e4f58d32edc0407
parent d3caa452677c37ba27a04041c2bde49a78a504b7
Author: Eyal Sawady <ecs@d2evs.net>
Date:   Mon, 28 Dec 2020 22:09:33 -0500

parse: implement field access

Diffstat:
M
include/ast.h
 | 
5
++++-
M
src/parse.c
 | 
12
+++++++++++-

2 files changed, 15 insertions(+), 2 deletions(-)
diff --git a/include/ast.h b/include/ast.h
@@ -105,7 +105,10 @@ struct ast_expression_access {
 			struct ast_expression *array;
 			struct ast_expression *index;
 		};
-		// TODO: Field selection
+		struct {
+			struct ast_expression *_struct;
+			char *field;
+		};
 	};
 };
 
diff --git a/src/parse.c b/src/parse.c
@@ -1060,7 +1060,17 @@ parse_postfix_expression(struct parser *par, struct ast_expression *lvalue)
 		lvalue = parse_call_expression(par, lvalue);
 		break;
 	case T_DOT:
-		assert(0); // TODO: field access expression
+		trenter(TR_PARSE, "field-access");
+		want(par, T_NAME, &tok);
+		struct ast_expression *exp =
+			xcalloc(sizeof(struct ast_expression), 1);
+		exp->type = EXPR_ACCESS;
+		exp->access.type = ACCESS_FIELD;
+		exp->access._struct = lvalue;
+		exp->access.field = tok.name;
+		lvalue = exp;
+		trleave(TR_PARSE, NULL);
+		break;
 	case T_LBRACKET:
 		unlex(par->lex, &tok);
 		lvalue = parse_index_slice_expression(par, lvalue);