Change APIs

Change fields of tokens, results of lexical analysis, as follows:
- Rename: mode -> mode_id
- Rename: kind_id -> mode_kind_id
- Add: kind_id

The kind ID is unique across all modes, but the mode kind ID is unique only within a mode.

Change fields of a transition table as follows:
- Rename: initial_mode -> initial_mode_id
- Rename: modes -> mode_names
- Rename: kinds -> kind_names
- Rename: specs[].kinds -> specs[].kind_names
- Rename: specs[].dfa.initial_state -> specs[].dfa.initial_state_id

Change public types defined in the spec package as follows:
- Rename: LexModeNum -> LexModeID
- Rename: LexKind -> LexKindName
- Add: LexKindID
- Add: StateID

1 files changed, 4 insertions, 2 deletions

diff --git a/compiler/dfa_test.go b/compiler/dfa_test.go
index a797313..2683815 100644
--- a/compiler/dfa_test.go
+++ b/compiler/dfa_test.go
@@ -2,10 +2,12 @@ package compiler
 
 import (
 	"testing"
+
+	"github.com/nihei9/maleeni/spec"
 )
 
 func TestGenDFA(t *testing.T) {
-	root, symTab, err := parse(map[int][]byte{
+	root, symTab, err := parse(map[spec.LexModeKindID][]byte{
 		1: []byte("(a|b)*abb"),
 	}, nil)
 	if err != nil {
@@ -94,7 +96,7 @@ func TestGenDFA(t *testing.T) {
 		t.Errorf("initial state is mismatched; want: %v, got: %v", s0.hash(), dfa.InitialState)
 	}
 
-	accTab := map[string]int{
+	accTab := map[string]spec.LexModeKindID{
 		s3.hash(): 1,
 	}
 	if len(dfa.AcceptingStatesTable) != len(accTab) {