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-rw-r--r--lib/Parser/Parser.cc16
1 files changed, 15 insertions, 1 deletions
diff --git a/lib/Parser/Parser.cc b/lib/Parser/Parser.cc
index d3b2daa..a7e7edf 100644
--- a/lib/Parser/Parser.cc
+++ b/lib/Parser/Parser.cc
@@ -45,7 +45,7 @@ std::vector<std::unique_ptr<StmtAST>> Parser::Parse() {
void Parser::syncToStatementStart() {
while (CurTok != tok_eof) {
switch (CurTok) {
- case tok_constant: case tok_declare: case tok_identifier: case tok_input: case tok_output:
+ case tok_delete: case tok_constant: case tok_declare: case tok_identifier: case tok_input: case tok_output:
case tok_case: case tok_endcase: case tok_otherwise:
case tok_if: case tok_while: case tok_repeat: case tok_for:
case tok_function: case tok_procedure: case tok_call: case tok_return:
@@ -94,6 +94,20 @@ std::unique_ptr<StmtAST> Parser::ParseStatement() {
}
std::unique_ptr<StmtAST> Parser::ParseStatementImpl() {
+ if (CurTok == tok_delete) {
+ int Line = Lex.getLine();
+ getNextToken();
+ if (CurTok != tok_identifier) {
+ fprintf(stderr, "error: DELETE requires an object designator at line %d\n", Line);
+ return nullptr;
+ }
+ std::string Name = Lex.IdentifierStr;
+ getNextToken();
+ std::vector<DesignatorAccess> Accesses;
+ if (!ParseDesignatorSuffix(Accesses)) return nullptr;
+ auto Target = std::make_unique<DesignatorExprAST>(Name, std::move(Accesses), Line);
+ return std::make_unique<DeleteStmtAST>(std::move(Target));
+ }
if (CurTok == tok_case) return ParseCaseStmt();
if (CurTok == tok_endcase || CurTok == tok_otherwise) {
fprintf(stderr, "error: Unexpected CASE terminator at line %d\n", Lex.getLine());