Add describe command to print a description file

1 files changed, 67 insertions, 0 deletions

diff --git a/spec/description.go b/spec/description.go
new file mode 100644
index 0000000..d2b6d3b
--- /dev/null
+++ b/spec/description.go
@@ -0,0 +1,67 @@
+package spec
+
+type Terminal struct {
+	Number    int    `json:"number"`
+	Name      string `json:"name"`
+	Anonymous bool   `json:"anonymous"`
+	Alias     string `json:"alias"`
+	Pattern   string `json:"pattern"`
+}
+
+type NonTerminal struct {
+	Number int    `json:"number"`
+	Name   string `json:"name"`
+}
+
+type Production struct {
+	Number int   `json:"number"`
+	LHS    int   `json:"lhs"`
+	RHS    []int `json:"rhs"`
+}
+
+type Item struct {
+	Production int `json:"production"`
+	Dot        int `json:"dot"`
+}
+
+type Transition struct {
+	Symbol int `json:"symbol"`
+	State  int `json:"state"`
+}
+
+type Reduce struct {
+	LookAhead  []int `json:"look_ahead"`
+	Production int   `json:"production"`
+}
+
+type SRConflict struct {
+	Symbol            int  `json:"symbol"`
+	State             int  `json:"state"`
+	Production        int  `json:"production"`
+	AdoptedState      *int `json:"adopted_state"`
+	AdoptedProduction *int `json:"adopted_production"`
+}
+
+type RRConflict struct {
+	Symbol            int `json:"symbol"`
+	Production1       int `json:"production_1"`
+	Production2       int `json:"production_2"`
+	AdoptedProduction int `json:"adopted_production"`
+}
+
+type State struct {
+	Number     int           `json:"number"`
+	Kernel     []*Item       `json:"kernel"`
+	Shift      []*Transition `json:"shift"`
+	Reduce     []*Reduce     `json:"reduce"`
+	GoTo       []*Transition `json:"goto"`
+	SRConflict []*SRConflict `json:"sr_conflict"`
+	RRConflict []*RRConflict `json:"rr_conflict"`
+}
+
+type Description struct {
+	Terminals    []*Terminal    `json:"terminals"`
+	NonTerminals []*NonTerminal `json:"non_terminals"`
+	Productions  []*Production  `json:"productions"`
+	States       []*State       `json:"states"`
+}