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compile.c: compile_next

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* compile.c (compile_next): extract from iseq_compile_each.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59594 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2017-08-15 00:18:47 +00:00
parent 582b7057dc
commit 7e958b890e
1 changed files with 79 additions and 72 deletions
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151
compile.c
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@ -4427,6 +4427,83 @@ compile_break(rb_iseq_t *iseq, LINK_ANCHOR *const ret, NODE *node, int popped)
return COMPILE_OK;
}
static int
compile_next(rb_iseq_t *iseq, LINK_ANCHOR *const ret, NODE *node, int popped)
{
const int line = nd_line(node);
unsigned long level = 0;
if (ISEQ_COMPILE_DATA(iseq)->redo_label != 0) {
LABEL *splabel = NEW_LABEL(0);
debugs("next in while loop\n");
ADD_LABEL(ret, splabel);
CHECK(COMPILE(ret, "next val/valid syntax?", node->nd_stts));
add_ensure_iseq(ret, iseq, 0);
ADD_ADJUST(ret, line, ISEQ_COMPILE_DATA(iseq)->redo_label);
ADD_INSNL(ret, line, jump, ISEQ_COMPILE_DATA(iseq)->start_label);
ADD_ADJUST_RESTORE(ret, splabel);
if (!popped) {
ADD_INSN(ret, line, putnil);
}
}
else if (ISEQ_COMPILE_DATA(iseq)->end_label) {
LABEL *splabel = NEW_LABEL(0);
debugs("next in block\n");
ADD_LABEL(ret, splabel);
ADD_ADJUST(ret, line, ISEQ_COMPILE_DATA(iseq)->start_label);
CHECK(COMPILE(ret, "next val", node->nd_stts));
add_ensure_iseq(ret, iseq, 0);
ADD_INSNL(ret, line, jump, ISEQ_COMPILE_DATA(iseq)->end_label);
ADD_ADJUST_RESTORE(ret, splabel);
if (!popped) {
ADD_INSN(ret, line, putnil);
}
}
else if (iseq->body->type == ISEQ_TYPE_EVAL) {
next_in_eval:
COMPILE_ERROR(ERROR_ARGS "Can't escape from eval with next");
return COMPILE_NG;
}
else {
const rb_iseq_t *ip = iseq;
while (ip) {
if (!ISEQ_COMPILE_DATA(ip)) {
ip = 0;
break;
}
level = VM_THROW_NO_ESCAPE_FLAG;
if (ISEQ_COMPILE_DATA(ip)->redo_label != 0) {
/* while loop */
break;
}
else if (ip->body->type == ISEQ_TYPE_BLOCK) {
break;
}
else if (ip->body->type == ISEQ_TYPE_EVAL) {
goto next_in_eval;
}
ip = ip->body->parent_iseq;
}
if (ip != 0) {
CHECK(COMPILE(ret, "next val", node->nd_stts));
ADD_INSN1(ret, line, throw, INT2FIX(level | TAG_NEXT));
if (popped) {
ADD_INSN(ret, line, pop);
}
}
else {
COMPILE_ERROR(ERROR_ARGS "Invalid next");
return COMPILE_NG;
}
}
return COMPILE_OK;
}
static int iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, NODE *node, int popped);
/**
compile each node
@ -4595,79 +4672,9 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, NODE *node, int popp
case NODE_BREAK:
CHECK(compile_break(iseq, ret, node, popped));
break;
case NODE_NEXT:{
unsigned long level = 0;
if (ISEQ_COMPILE_DATA(iseq)->redo_label != 0) {
LABEL *splabel = NEW_LABEL(0);
debugs("next in while loop\n");
ADD_LABEL(ret, splabel);
CHECK(COMPILE(ret, "next val/valid syntax?", node->nd_stts));
add_ensure_iseq(ret, iseq, 0);
ADD_ADJUST(ret, line, ISEQ_COMPILE_DATA(iseq)->redo_label);
ADD_INSNL(ret, line, jump, ISEQ_COMPILE_DATA(iseq)->start_label);
ADD_ADJUST_RESTORE(ret, splabel);
if (!popped) {
ADD_INSN(ret, line, putnil);
}
}
else if (ISEQ_COMPILE_DATA(iseq)->end_label) {
LABEL *splabel = NEW_LABEL(0);
debugs("next in block\n");
ADD_LABEL(ret, splabel);
ADD_ADJUST(ret, line, ISEQ_COMPILE_DATA(iseq)->start_label);
CHECK(COMPILE(ret, "next val", node->nd_stts));
add_ensure_iseq(ret, iseq, 0);
ADD_INSNL(ret, line, jump, ISEQ_COMPILE_DATA(iseq)->end_label);
ADD_ADJUST_RESTORE(ret, splabel);
if (!popped) {
ADD_INSN(ret, line, putnil);
}
}
else if (iseq->body->type == ISEQ_TYPE_EVAL) {
next_in_eval:
COMPILE_ERROR(ERROR_ARGS "Can't escape from eval with next");
goto ng;
}
else {
const rb_iseq_t *ip = iseq;
while (ip) {
if (!ISEQ_COMPILE_DATA(ip)) {
ip = 0;
break;
}
level = VM_THROW_NO_ESCAPE_FLAG;
if (ISEQ_COMPILE_DATA(ip)->redo_label != 0) {
/* while loop */
break;
}
else if (ip->body->type == ISEQ_TYPE_BLOCK) {
break;
}
else if (ip->body->type == ISEQ_TYPE_EVAL) {
goto next_in_eval;
}
ip = ip->body->parent_iseq;
}
if (ip != 0) {
CHECK(COMPILE(ret, "next val", node->nd_stts));
ADD_INSN1(ret, line, throw, INT2FIX(level | TAG_NEXT));
if (popped) {
ADD_INSN(ret, line, pop);
}
}
else {
COMPILE_ERROR(ERROR_ARGS "Invalid next");
goto ng;
}
}
case NODE_NEXT:
CHECK(compile_next(iseq, ret, node, popped));
break;
}
case NODE_REDO:{
if (ISEQ_COMPILE_DATA(iseq)->redo_label) {
LABEL *splabel = NEW_LABEL(0);