motiejus/zig
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support inline assembly expressions with return type

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This commit is contained in:
Andrew Kelley
2015-12-15 00:46:56 -07:00
parent 66ca916805
commit a292eb8d64
6 changed files with 64 additions and 27 deletions
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18
src/parser.cpp
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@@ -1731,7 +1731,7 @@ static void ast_parse_asm_input_item(ParseContext *pc, int *token_index, AstNode
}
/*
AsmOutputItem : token(LBracket) token(Symbol) token(RBracket) token(String) token(LParen) token(Symbol) token(RParen)
AsmOutputItem : token(LBracket) token(Symbol) token(RBracket) token(String) token(LParen) (token(Symbol) | token(Return) Type) token(RParen)
*/
static void ast_parse_asm_output_item(ParseContext *pc, int *token_index, AstNode *node) {
ast_eat_token(pc, token_index, TokenIdLBracket);
@@ -1740,14 +1740,24 @@ static void ast_parse_asm_output_item(ParseContext *pc, int *token_index, AstNod
Token *constraint = ast_eat_token(pc, token_index, TokenIdStringLiteral);
AsmOutput *asm_output = allocate<AsmOutput>(1);
ast_eat_token(pc, token_index, TokenIdLParen);
Token *out_symbol = ast_eat_token(pc, token_index, TokenIdSymbol);
Token *token = &pc->tokens->at(*token_index);
*token_index += 1;
if (token->id == TokenIdSymbol) {
ast_buf_from_token(pc, token, &asm_output->variable_name);
} else if (token->id == TokenIdKeywordReturn) {
asm_output->return_type = ast_parse_type(pc, token_index);
} else {
ast_invalid_token_error(pc, token);
}
ast_eat_token(pc, token_index, TokenIdRParen);
AsmOutput *asm_output = allocate<AsmOutput>(1);
ast_buf_from_token(pc, alias, &asm_output->asm_symbolic_name);
parse_string_literal(pc, constraint, &asm_output->constraint, nullptr, nullptr);
ast_buf_from_token(pc, out_symbol, &asm_output->variable_name);
node->data.asm_expr.output_list.append(asm_output);
}