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Implicit Selector Expressions: .A

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This commit is contained in:
gingerBill
2019-03-06 16:19:47 +00:00
parent 1652d5033b
commit ad3b6ab718
6 changed files with 89 additions and 3 deletions
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24
src/parser.cpp
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@@ -25,6 +25,11 @@ Token ast_token(Ast *node) {
return ast_token(node->SelectorExpr.selector);
}
return node->SelectorExpr.token;
case Ast_ImplicitSelectorExpr:
if (node->ImplicitSelectorExpr.selector != nullptr) {
return ast_token(node->ImplicitSelectorExpr.selector);
}
return node->ImplicitSelectorExpr.token;
case Ast_IndexExpr: return node->IndexExpr.open;
case Ast_SliceExpr: return node->SliceExpr.open;
case Ast_Ellipsis: return node->Ellipsis.token;
@@ -165,6 +170,9 @@ Ast *clone_ast(Ast *node) {
n->SelectorExpr.expr = clone_ast(n->SelectorExpr.expr);
n->SelectorExpr.selector = clone_ast(n->SelectorExpr.selector);
break;
case Ast_ImplicitSelectorExpr:
n->ImplicitSelectorExpr.selector = clone_ast(n->ImplicitSelectorExpr.selector);
break;
case Ast_IndexExpr:
n->IndexExpr.expr = clone_ast(n->IndexExpr.expr);
n->IndexExpr.index = clone_ast(n->IndexExpr.index);
@@ -504,11 +512,20 @@ Ast *ast_call_expr(AstFile *f, Ast *proc, Array<Ast *> args, Token open, Token c
Ast *ast_selector_expr(AstFile *f, Token token, Ast *expr, Ast *selector) {
Ast *result = alloc_ast_node(f, Ast_SelectorExpr);
result->SelectorExpr.token = token;
result->SelectorExpr.expr = expr;
result->SelectorExpr.selector = selector;
return result;
}
Ast *ast_implicit_selector_expr(AstFile *f, Token token, Ast *selector) {
Ast *result = alloc_ast_node(f, Ast_ImplicitSelectorExpr);
result->ImplicitSelectorExpr.token = token;
result->ImplicitSelectorExpr.selector = selector;
return result;
}
Ast *ast_index_expr(AstFile *f, Ast *expr, Ast *index, Token open, Token close) {
Ast *result = alloc_ast_node(f, Ast_IndexExpr);
result->IndexExpr.expr = expr;
@@ -1612,7 +1629,6 @@ Ast *parse_operand(AstFile *f, bool lhs) {
case Token_offset_of:
return parse_call_expr(f, ast_implicit(f, advance_token(f)));
case Token_String:
return ast_basic_lit(f, advance_token(f));
@@ -2277,6 +2293,12 @@ Ast *parse_unary_expr(AstFile *f, bool lhs) {
Ast *expr = parse_unary_expr(f, lhs);
return ast_unary_expr(f, token, expr);
}
case Token_Period: {
Token token = expect_token(f, Token_Period);
Ast *ident = parse_ident(f);
return ast_implicit_selector_expr(f, token, ident);
}
}
return parse_atom_expr(f, parse_operand(f, lhs), lhs);