motiejus/zig
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var is no longer a pseudo-type, it is syntax

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closes #779
This commit is contained in:
Andrew Kelley
2018-03-06 18:24:49 -05:00
parent 44ae891bd7
commit eff3530dfa
8 changed files with 116 additions and 154 deletions
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47
src/parser.cpp
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@@ -263,21 +263,14 @@ static AstNode *ast_parse_error_set_expr(ParseContext *pc, size_t *token_index,
}
/*
TypeExpr = ErrorSetExpr | "var"
TypeExpr = ErrorSetExpr
*/
static AstNode *ast_parse_type_expr(ParseContext *pc, size_t *token_index, bool mandatory) {
Token *token = &pc->tokens->at(*token_index);
if (token->id == TokenIdKeywordVar) {
AstNode *node = ast_create_node(pc, NodeTypeVarLiteral, token);
*token_index += 1;
return node;
} else {
return ast_parse_error_set_expr(pc, token_index, mandatory);
}
return ast_parse_error_set_expr(pc, token_index, mandatory);
}
/*
ParamDecl = option("noalias" | "comptime") option(Symbol ":") (TypeExpr | "...")
ParamDecl = option("noalias" | "comptime") option(Symbol ":") (TypeExpr | "var" | "...")
*/
static AstNode *ast_parse_param_decl(ParseContext *pc, size_t *token_index) {
Token *token = &pc->tokens->at(*token_index);
@@ -308,6 +301,9 @@ static AstNode *ast_parse_param_decl(ParseContext *pc, size_t *token_index) {
if (ellipsis_tok->id == TokenIdEllipsis3) {
*token_index += 1;
node->data.param_decl.is_var_args = true;
} else if (ellipsis_tok->id == TokenIdKeywordVar) {
*token_index += 1;
node->data.param_decl.var_token = ellipsis_tok;
} else {
node->data.param_decl.type = ast_parse_type_expr(pc, token_index, true);
}
@@ -2421,7 +2417,7 @@ static AstNode *ast_parse_block(ParseContext *pc, size_t *token_index, bool mand
}
/*
FnProto = option("nakedcc" | "stdcallcc" | "extern" | ("async" option("(" Expression ")"))) "fn" option(Symbol) ParamDeclList option("align" "(" Expression ")") option("section" "(" Expression ")") option("!") TypeExpr
FnProto = option("nakedcc" | "stdcallcc" | "extern" | ("async" option("(" Expression ")"))) "fn" option(Symbol) ParamDeclList option("align" "(" Expression ")") option("section" "(" Expression ")") option("!") (TypeExpr | "var")
*/
static AstNode *ast_parse_fn_proto(ParseContext *pc, size_t *token_index, bool mandatory, VisibMod visib_mod) {
Token *first_token = &pc->tokens->at(*token_index);
@@ -2507,19 +2503,25 @@ static AstNode *ast_parse_fn_proto(ParseContext *pc, size_t *token_index, bool m
ast_eat_token(pc, token_index, TokenIdRParen);
next_token = &pc->tokens->at(*token_index);
}
if (next_token->id == TokenIdKeywordError) {
Token *maybe_lbrace_tok = &pc->tokens->at(*token_index + 1);
if (maybe_lbrace_tok->id == TokenIdLBrace) {
*token_index += 1;
node->data.fn_proto.return_type = ast_create_node(pc, NodeTypeErrorType, next_token);
return node;
}
} else if (next_token->id == TokenIdBang) {
if (next_token->id == TokenIdKeywordVar) {
node->data.fn_proto.return_var_token = next_token;
*token_index += 1;
node->data.fn_proto.auto_err_set = true;
next_token = &pc->tokens->at(*token_index);
} else {
if (next_token->id == TokenIdKeywordError) {
Token *maybe_lbrace_tok = &pc->tokens->at(*token_index + 1);
if (maybe_lbrace_tok->id == TokenIdLBrace) {
*token_index += 1;
node->data.fn_proto.return_type = ast_create_node(pc, NodeTypeErrorType, next_token);
return node;
}
} else if (next_token->id == TokenIdBang) {
*token_index += 1;
node->data.fn_proto.auto_err_set = true;
next_token = &pc->tokens->at(*token_index);
}
node->data.fn_proto.return_type = ast_parse_type_expr(pc, token_index, true);
}
node->data.fn_proto.return_type = ast_parse_type_expr(pc, token_index, true);
return node;
}
@@ -3069,9 +3071,6 @@ void ast_visit_node_children(AstNode *node, void (*visit)(AstNode **, void *cont
case NodeTypeErrorType:
// none
break;
case NodeTypeVarLiteral:
// none
break;
case NodeTypeAddrOfExpr:
visit_field(&node->data.addr_of_expr.align_expr, visit, context);
visit_field(&node->data.addr_of_expr.op_expr, visit, context);