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/ast.go b/compiler/ast.go
index 7d3965a..046662e 100644
--- a/compiler/ast.go
+++ b/compiler/ast.go
@@ -3,6 +3,8 @@ package compiler
 import (
 	"fmt"
 	"io"
+
+	"github.com/nihei9/maleeni/spec"
 )
 
 type astNode interface {
@@ -78,13 +80,13 @@ func (n *symbolNode) last() *symbolPositionSet {
 }
 
 type endMarkerNode struct {
-	id        int
+	id        spec.LexModeKindID
 	pos       symbolPosition
 	firstMemo *symbolPositionSet
 	lastMemo  *symbolPositionSet
 }
 
-func newEndMarkerNode(id int) *endMarkerNode {
+func newEndMarkerNode(id spec.LexModeKindID) *endMarkerNode {
 	return &endMarkerNode{
 		id:  id,
 		pos: symbolPositionNil,