shithub: scc

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Added tree structure for break statement

--- a/flow.c

+++ b/flow.c

@@ -149,6 +149,16 @@

 }

 static struct node *

+_break(void)

+{

+	expect(BREAK);

+	expect(';');

+	if (blockp == blocks)

+		error("break statement not within loop or switch");

+	return node1(OBREAK, NULL);

+}

+

+static struct node *

 stmt(void)

 {

 	register struct node *np;

@@ -161,7 +171,7 @@

 	case DO:       return _do();

 	case WHILE:    return _while();

 	case CONTINUE:

-	case BREAK:

+	case BREAK:    return _break();

 	case RETURN:

 	case GOTO:     return _goto();

 	case CASE:     /* TODO */

--- a/syntax.h

+++ b/syntax.h

@@ -11,7 +11,7 @@

 	OBOR, OAND, OOR, OTERN, OASSIGN, OA_MUL, OA_DIV,

 	OA_MOD, OA_ADD, OA_SUB, OA_SHL, OA_SHR, OA_AND,

 	OA_XOR, OA_OR, OSYM, OCOMP, OSWITCH, OIF, OFOR,

-	OFEXP, ODO, OWHILE, OLABEL, OGOTO

+	OFEXP, ODO, OWHILE, OLABEL, OGOTO, OBREAK,

 };

 struct node;

--- a/tree.c

+++ b/tree.c

@@ -184,7 +184,8 @@

 		[ODO] = {2, "do"},

 		[OWHILE] = {2, "while"},

 		[OLABEL] = {2, "label"},

-		[OGOTO] = {1, "goto"}

+		[OGOTO] = {1, "goto"},

+		[OBREAK] = {1, "break"},

 	};

 	if (!np) {

 		fputs(" nil", stdout);