motiejus/zig
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support maybe destructuring into a pointer variable

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This commit is contained in:
Andrew Kelley
2016-05-03 15:06:34 -07:00
parent 9ccd0ba961
commit 7f589c0cab
6 changed files with 156 additions and 34 deletions
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17
src/parser.cpp
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@@ -1755,7 +1755,7 @@ static AstNode *ast_parse_else(ParseContext *pc, int *token_index, bool mandator
/*
IfExpression : IfVarExpression | IfBoolExpression
IfBoolExpression : token(If) token(LParen) Expression token(RParen) Expression option(Else)
IfVarExpression : token(If) token(LParen) (token(Const) | token(Var)) token(Symbol) option(Expression) Token(MaybeAssign) Expression token(RParen) Expression Option(Else)
IfVarExpression = "if" "(" ("const" | "var") option("*") "Symbol" option(":" TypeExpr) "?=" Expression ")" Expression Option(Else)
*/
static AstNode *ast_parse_if_expr(ParseContext *pc, int *token_index, bool mandatory) {
Token *if_tok = &pc->tokens->at(*token_index);
@@ -1776,8 +1776,19 @@ static AstNode *ast_parse_if_expr(ParseContext *pc, int *token_index, bool manda
node->data.if_var_expr.var_decl.is_const = (token->id == TokenIdKeywordConst);
*token_index += 1;
Token *name_token = ast_eat_token(pc, token_index, TokenIdSymbol);
ast_buf_from_token(pc, name_token, &node->data.if_var_expr.var_decl.symbol);
Token *star_or_symbol = &pc->tokens->at(*token_index);
if (star_or_symbol->id == TokenIdStar) {
*token_index += 1;
node->data.if_var_expr.var_is_ptr = true;
Token *name_token = ast_eat_token(pc, token_index, TokenIdSymbol);
ast_buf_from_token(pc, name_token, &node->data.if_var_expr.var_decl.symbol);
} else if (star_or_symbol->id == TokenIdSymbol) {
*token_index += 1;
ast_buf_from_token(pc, star_or_symbol, &node->data.if_var_expr.var_decl.symbol);
} else {
ast_invalid_token_error(pc, star_or_symbol);
}
Token *eq_or_colon = &pc->tokens->at(*token_index);
if (eq_or_colon->id == TokenIdMaybeAssign) {