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Labels for block and if statements (break only)

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This commit is contained in:
gingerBill
2018-12-08 14:12:52 +00:00
parent 4369a1714e
commit d05837ab6d
6 changed files with 97 additions and 22 deletions
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6
src/parser.cpp
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@@ -223,9 +223,11 @@ Ast *clone_ast(Ast *node) {
n->IncDecStmt.expr = clone_ast(n->IncDecStmt.expr);
break;
case Ast_BlockStmt:
n->BlockStmt.label = clone_ast(n->BlockStmt.label);
n->BlockStmt.stmts = clone_ast_array(n->BlockStmt.stmts);
break;
case Ast_IfStmt:
n->IfStmt.label = clone_ast(n->IfStmt.label);
n->IfStmt.init = clone_ast(n->IfStmt.init);
n->IfStmt.cond = clone_ast(n->IfStmt.cond);
n->IfStmt.body = clone_ast(n->IfStmt.body);
@@ -2637,6 +2639,8 @@ Ast *parse_simple_stmt(AstFile *f, u32 flags) {
expect_token_after(f, Token_Colon, "identifier list");
if ((flags&StmtAllowFlag_Label) && lhs.count == 1) {
switch (f->curr_token.kind) {
case Token_OpenBrace: // block statement
case Token_if:
case Token_for:
case Token_switch: {
Ast *name = lhs[0];
@@ -2644,6 +2648,8 @@ Ast *parse_simple_stmt(AstFile *f, u32 flags) {
Ast *stmt = parse_stmt(f);
#define _SET_LABEL(Kind_, label_) case GB_JOIN2(Ast_, Kind_): (stmt->Kind_).label = label_; break
switch (stmt->kind) {
_SET_LABEL(BlockStmt, label);
_SET_LABEL(IfStmt, label);
_SET_LABEL(ForStmt, label);
_SET_LABEL(RangeStmt, label);
_SET_LABEL(SwitchStmt, label);