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IR: add error for assigning runtime value to inline var

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This commit is contained in:
Andrew Kelley
2016-12-07 00:22:14 -05:00
parent 7d9fa01ed5
commit c0b2fe4d6c
4 changed files with 74 additions and 34 deletions
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32
src/parser.cpp
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@@ -1306,25 +1306,40 @@ static AstNode *ast_parse_else(ParseContext *pc, size_t *token_index, bool manda
/*
IfExpression : IfVarExpression | IfBoolExpression
IfBoolExpression : token(If) token(LParen) Expression token(RParen) Expression option(Else)
IfVarExpression = "if" "(" ("const" | "var") option("*") "Symbol" option(":" TypeExpr) "?=" Expression ")" Expression Option(Else)
IfBoolExpression = option("inline") "if" "(" Expression ")" Expression option(Else)
IfVarExpression = option("inline") "if" "(" ("const" | "var") option("*") Symbol option(":" TypeExpr) "?=" Expression ")" Expression Option(Else)
*/
static AstNode *ast_parse_if_expr(ParseContext *pc, size_t *token_index, bool mandatory) {
Token *if_tok = &pc->tokens->at(*token_index);
if (if_tok->id != TokenIdKeywordIf) {
if (mandatory) {
Token *first_token = &pc->tokens->at(*token_index);
Token *if_tok;
bool is_inline;
if (first_token->id == TokenIdKeywordInline) {
if_tok = &pc->tokens->at(*token_index + 1);
if (if_tok->id == TokenIdKeywordIf) {
is_inline = true;
*token_index += 2;
} else if (mandatory) {
ast_expect_token(pc, if_tok, TokenIdKeywordIf);
} else {
return nullptr;
}
} else if (first_token->id == TokenIdKeywordIf) {
if_tok = first_token;
is_inline = false;
*token_index += 1;
} else if (mandatory) {
ast_expect_token(pc, first_token, TokenIdKeywordIf);
} else {
return nullptr;
}
*token_index += 1;
ast_eat_token(pc, token_index, TokenIdLParen);
Token *token = &pc->tokens->at(*token_index);
if (token->id == TokenIdKeywordConst || token->id == TokenIdKeywordVar) {
AstNode *node = ast_create_node(pc, NodeTypeIfVarExpr, if_tok);
node->data.if_var_expr.is_inline = is_inline;
node->data.if_var_expr.var_decl.is_const = (token->id == TokenIdKeywordConst);
*token_index += 1;
@@ -1362,6 +1377,7 @@ static AstNode *ast_parse_if_expr(ParseContext *pc, size_t *token_index, bool ma
return node;
} else {
AstNode *node = ast_create_node(pc, NodeTypeIfBoolExpr, if_tok);
node->data.if_bool_expr.is_inline = is_inline;
node->data.if_bool_expr.condition = ast_parse_expression(pc, token_index, true);
ast_eat_token(pc, token_index, TokenIdRParen);
node->data.if_bool_expr.then_block = ast_parse_expression(pc, token_index, true);
@@ -1561,12 +1577,12 @@ static AstNode *ast_parse_while_expr(ParseContext *pc, size_t *token_index, bool
bool is_inline;
if (first_token->id == TokenIdKeywordInline) {
is_inline = true;
while_token = &pc->tokens->at(*token_index + 1);
if (while_token->id == TokenIdKeywordWhile) {
is_inline = true;
*token_index += 2;
} else if (mandatory) {
ast_expect_token(pc, first_token, TokenIdKeywordWhile);
ast_expect_token(pc, while_token, TokenIdKeywordWhile);
} else {
return nullptr;
}