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implement pub const

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This commit is contained in:
Andrew Kelley
2016-01-09 00:37:48 -07:00
parent 0c24ed8a81
commit bdca82ea66
5 changed files with 46 additions and 16 deletions
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27
src/parser.cpp
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@@ -1965,23 +1965,34 @@ static AstNode *ast_parse_return_expr(ParseContext *pc, int *token_index, bool m
VariableDeclaration : option(FnVisibleMod) (token(Var) | token(Const)) token(Symbol) (token(Eq) Expression | token(Colon) Type option(token(Eq) Expression))
*/
static AstNode *ast_parse_variable_declaration_expr(ParseContext *pc, int *token_index, bool mandatory) {
Token *var_or_const_tok = &pc->tokens->at(*token_index);
Token *first_token = &pc->tokens->at(*token_index);
bool is_const;
if (var_or_const_tok->id == TokenIdKeywordVar) {
is_const = false;
} else if (var_or_const_tok->id == TokenIdKeywordConst) {
is_const = true;
VisibMod visib_mod;
if (first_token->id == TokenIdKeywordPub) {
*token_index += 1;
visib_mod = VisibModPub;
} else if (first_token->id == TokenIdKeywordExport) {
*token_index += 1;
visib_mod = VisibModExport;
} else if (first_token->id == TokenIdKeywordVar ||
first_token->id == TokenIdKeywordConst)
{
visib_mod = VisibModPrivate;
} else if (mandatory) {
ast_invalid_token_error(pc, var_or_const_tok);
ast_invalid_token_error(pc, first_token);
} else {
return nullptr;
}
Token *var_or_const_tok = &pc->tokens->at(*token_index);
bool is_const = (var_or_const_tok->id == TokenIdKeywordConst);
*token_index += 1;
AstNode *node = ast_create_node(pc, NodeTypeVariableDeclaration, var_or_const_tok);
AstNode *node = ast_create_node(pc, NodeTypeVariableDeclaration, first_token);
node->data.variable_declaration.is_const = is_const;
node->data.variable_declaration.visib_mod = visib_mod;
Token *name_token = ast_eat_token(pc, token_index, TokenIdSymbol);
ast_buf_from_token(pc, name_token, &node->data.variable_declaration.symbol);