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Diffstat (limited to 'ast-to-instr/src/VHDLSSCNode.java')
| -rw-r--r-- | ast-to-instr/src/VHDLSSCNode.java | 32 |
1 files changed, 26 insertions, 6 deletions
diff --git a/ast-to-instr/src/VHDLSSCNode.java b/ast-to-instr/src/VHDLSSCNode.java index 641377f..97462c9 100644 --- a/ast-to-instr/src/VHDLSSCNode.java +++ b/ast-to-instr/src/VHDLSSCNode.java @@ -40,7 +40,7 @@ public class VHDLSSCNode extends VHDLNode attributes ); - this.prev_node = prev_node; + this.prev_node = prev_node; /* null when first node of the process */ } @Override @@ -54,6 +54,7 @@ public class VHDLSSCNode extends VHDLNode final int intermediary_nodes_count; int i; + /* Find all the nodes, in order, in this instruction chain */ sub_nodes = (NodeList) XPE_FIND_SUB_NODES.evaluate ( @@ -61,13 +62,19 @@ public class VHDLSSCNode extends VHDLNode XPathConstants.NODESET ); + /* Don't handle the last node in the 'for' loop, see below. */ intermediary_nodes_count = (sub_nodes.getLength() - 1); for (i = 0; i < intermediary_nodes_count; ++i) { - final IDs next_node; - - next_node = + /* Prepare the parsing of all those nodes throufh the waiting list. + * To do so, each node needs to be informed of the ID of the node that + * follows it. + */ + final IDs next_seq_node; + + /* Get the ID for the next node in the sequence */ + next_seq_node = IDs.get_id_from_xml_id ( output, @@ -79,11 +86,21 @@ public class VHDLSSCNode extends VHDLNode "node" ); - waiting_list.push(get_vhdl_node(sub_nodes.item(i), next_node, i)); + /* + * Add to the waiting list, 'i' indicates if the attributes inherited + * by the instruction sequence node should be passed along (it's only + * the case if i == 0). + */ + waiting_list.push(get_vhdl_node(sub_nodes.item(i), next_seq_node, i)); } + /* + * The last node of the sequence takes the node following the sequence + * as 'next_node', so it's handled separatly. + */ waiting_list.push(get_vhdl_node(sub_nodes.item(i), next_node, i)); + /* Handle the connection of the first node to the previous node. */ handle_backward_connection(sub_nodes.item(0)); } @@ -193,7 +210,10 @@ public class VHDLSSCNode extends VHDLNode } else { - /* First node of the process */ + /* + * Not the first node, so have the previous node connect to this one + * (which is the first of this instruction set). + */ Predicates.add_entry ( output, |