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path: root/grammar/parsing_table_test.go
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Diffstat (limited to 'grammar/parsing_table_test.go')
-rw-r--r--grammar/parsing_table_test.go97
1 files changed, 49 insertions, 48 deletions
diff --git a/grammar/parsing_table_test.go b/grammar/parsing_table_test.go
index fe56722..ae829e6 100644
--- a/grammar/parsing_table_test.go
+++ b/grammar/parsing_table_test.go
@@ -5,13 +5,14 @@ import (
"strings"
"testing"
- spec "github.com/nihei9/vartan/spec/grammar"
+ "github.com/nihei9/vartan/grammar/symbol"
+ "github.com/nihei9/vartan/spec/grammar/parser"
)
type expectedState struct {
kernelItems []*lrItem
- acts map[symbol]testActionEntry
- goTos map[symbol][]*lrItem
+ acts map[symbol.Symbol]testActionEntry
+ goTos map[symbol.Symbol][]*lrItem
}
func TestGenLALRParsingTable(t *testing.T) {
@@ -32,14 +33,14 @@ id: "[A-Za-z0-9_]+";
var nonTermCount int
var termCount int
{
- ast, err := spec.Parse(strings.NewReader(src))
+ ast, err := parser.Parse(strings.NewReader(src))
if err != nil {
t.Fatal(err)
}
b := GrammarBuilder{
AST: ast,
}
- gram, err = b.Build()
+ gram, err = b.build()
if err != nil {
t.Fatal(err)
}
@@ -56,11 +57,11 @@ id: "[A-Za-z0-9_]+";
t.Fatal(err)
}
- nonTermTexts, err := gram.symbolTable.nonTerminalTexts()
+ nonTermTexts, err := gram.symbolTable.NonTerminalTexts()
if err != nil {
t.Fatal(err)
}
- termTexts, err := gram.symbolTable.terminalTexts()
+ termTexts, err := gram.symbolTable.TerminalTexts()
if err != nil {
t.Fatal(err)
}
@@ -89,42 +90,42 @@ id: "[A-Za-z0-9_]+";
expectedKernels := map[int][]*lrItem{
0: {
- withLookAhead(genLR0Item("s'", 0, "s"), symbolEOF),
+ withLookAhead(genLR0Item("s'", 0, "s"), symbol.SymbolEOF),
},
1: {
- withLookAhead(genLR0Item("s'", 1, "s"), symbolEOF),
+ withLookAhead(genLR0Item("s'", 1, "s"), symbol.SymbolEOF),
},
2: {
- withLookAhead(genLR0Item("s", 1, "l", "eq", "r"), symbolEOF),
- withLookAhead(genLR0Item("r", 1, "l"), symbolEOF),
+ withLookAhead(genLR0Item("s", 1, "l", "eq", "r"), symbol.SymbolEOF),
+ withLookAhead(genLR0Item("r", 1, "l"), symbol.SymbolEOF),
},
3: {
- withLookAhead(genLR0Item("s", 1, "r"), symbolEOF),
+ withLookAhead(genLR0Item("s", 1, "r"), symbol.SymbolEOF),
},
4: {
- withLookAhead(genLR0Item("l", 1, "ref", "r"), genSym("eq"), symbolEOF),
+ withLookAhead(genLR0Item("l", 1, "ref", "r"), genSym("eq"), symbol.SymbolEOF),
},
5: {
- withLookAhead(genLR0Item("l", 1, "id"), genSym("eq"), symbolEOF),
+ withLookAhead(genLR0Item("l", 1, "id"), genSym("eq"), symbol.SymbolEOF),
},
6: {
- withLookAhead(genLR0Item("s", 2, "l", "eq", "r"), symbolEOF),
+ withLookAhead(genLR0Item("s", 2, "l", "eq", "r"), symbol.SymbolEOF),
},
7: {
- withLookAhead(genLR0Item("l", 2, "ref", "r"), genSym("eq"), symbolEOF),
+ withLookAhead(genLR0Item("l", 2, "ref", "r"), genSym("eq"), symbol.SymbolEOF),
},
8: {
- withLookAhead(genLR0Item("r", 1, "l"), genSym("eq"), symbolEOF),
+ withLookAhead(genLR0Item("r", 1, "l"), genSym("eq"), symbol.SymbolEOF),
},
9: {
- withLookAhead(genLR0Item("s", 3, "l", "eq", "r"), symbolEOF),
+ withLookAhead(genLR0Item("s", 3, "l", "eq", "r"), symbol.SymbolEOF),
},
}
expectedStates := []expectedState{
{
kernelItems: expectedKernels[0],
- acts: map[symbol]testActionEntry{
+ acts: map[symbol.Symbol]testActionEntry{
genSym("ref"): {
ty: ActionTypeShift,
nextState: expectedKernels[4],
@@ -134,7 +135,7 @@ id: "[A-Za-z0-9_]+";
nextState: expectedKernels[5],
},
},
- goTos: map[symbol][]*lrItem{
+ goTos: map[symbol.Symbol][]*lrItem{
genSym("s"): expectedKernels[1],
genSym("l"): expectedKernels[2],
genSym("r"): expectedKernels[3],
@@ -142,8 +143,8 @@ id: "[A-Za-z0-9_]+";
},
{
kernelItems: expectedKernels[1],
- acts: map[symbol]testActionEntry{
- symbolEOF: {
+ acts: map[symbol.Symbol]testActionEntry{
+ symbol.SymbolEOF: {
ty: ActionTypeReduce,
production: genProd("s'", "s"),
},
@@ -151,12 +152,12 @@ id: "[A-Za-z0-9_]+";
},
{
kernelItems: expectedKernels[2],
- acts: map[symbol]testActionEntry{
+ acts: map[symbol.Symbol]testActionEntry{
genSym("eq"): {
ty: ActionTypeShift,
nextState: expectedKernels[6],
},
- symbolEOF: {
+ symbol.SymbolEOF: {
ty: ActionTypeReduce,
production: genProd("r", "l"),
},
@@ -164,8 +165,8 @@ id: "[A-Za-z0-9_]+";
},
{
kernelItems: expectedKernels[3],
- acts: map[symbol]testActionEntry{
- symbolEOF: {
+ acts: map[symbol.Symbol]testActionEntry{
+ symbol.SymbolEOF: {
ty: ActionTypeReduce,
production: genProd("s", "r"),
},
@@ -173,7 +174,7 @@ id: "[A-Za-z0-9_]+";
},
{
kernelItems: expectedKernels[4],
- acts: map[symbol]testActionEntry{
+ acts: map[symbol.Symbol]testActionEntry{
genSym("ref"): {
ty: ActionTypeShift,
nextState: expectedKernels[4],
@@ -183,19 +184,19 @@ id: "[A-Za-z0-9_]+";
nextState: expectedKernels[5],
},
},
- goTos: map[symbol][]*lrItem{
+ goTos: map[symbol.Symbol][]*lrItem{
genSym("r"): expectedKernels[7],
genSym("l"): expectedKernels[8],
},
},
{
kernelItems: expectedKernels[5],
- acts: map[symbol]testActionEntry{
+ acts: map[symbol.Symbol]testActionEntry{
genSym("eq"): {
ty: ActionTypeReduce,
production: genProd("l", "id"),
},
- symbolEOF: {
+ symbol.SymbolEOF: {
ty: ActionTypeReduce,
production: genProd("l", "id"),
},
@@ -203,7 +204,7 @@ id: "[A-Za-z0-9_]+";
},
{
kernelItems: expectedKernels[6],
- acts: map[symbol]testActionEntry{
+ acts: map[symbol.Symbol]testActionEntry{
genSym("ref"): {
ty: ActionTypeShift,
nextState: expectedKernels[4],
@@ -213,19 +214,19 @@ id: "[A-Za-z0-9_]+";
nextState: expectedKernels[5],
},
},
- goTos: map[symbol][]*lrItem{
+ goTos: map[symbol.Symbol][]*lrItem{
genSym("l"): expectedKernels[8],
genSym("r"): expectedKernels[9],
},
},
{
kernelItems: expectedKernels[7],
- acts: map[symbol]testActionEntry{
+ acts: map[symbol.Symbol]testActionEntry{
genSym("eq"): {
ty: ActionTypeReduce,
production: genProd("l", "ref", "r"),
},
- symbolEOF: {
+ symbol.SymbolEOF: {
ty: ActionTypeReduce,
production: genProd("l", "ref", "r"),
},
@@ -233,12 +234,12 @@ id: "[A-Za-z0-9_]+";
},
{
kernelItems: expectedKernels[8],
- acts: map[symbol]testActionEntry{
+ acts: map[symbol.Symbol]testActionEntry{
genSym("eq"): {
ty: ActionTypeReduce,
production: genProd("r", "l"),
},
- symbolEOF: {
+ symbol.SymbolEOF: {
ty: ActionTypeReduce,
production: genProd("r", "l"),
},
@@ -246,8 +247,8 @@ id: "[A-Za-z0-9_]+";
},
{
kernelItems: expectedKernels[9],
- acts: map[symbol]testActionEntry{
- symbolEOF: {
+ acts: map[symbol.Symbol]testActionEntry{
+ symbol.SymbolEOF: {
ty: ActionTypeReduce,
production: genProd("s", "l", "eq", "r"),
},
@@ -287,11 +288,11 @@ id: "[A-Za-z0-9_]+";
}
func testAction(t *testing.T, expectedState *expectedState, state *lrState, ptab *ParsingTable, automaton *lr0Automaton, gram *Grammar, termCount int) {
- nonEmptyEntries := map[symbolNum]struct{}{}
+ nonEmptyEntries := map[symbol.SymbolNum]struct{}{}
for eSym, eAct := range expectedState.acts {
- nonEmptyEntries[eSym.num()] = struct{}{}
+ nonEmptyEntries[eSym.Num()] = struct{}{}
- ty, stateNum, prodNum := ptab.getAction(state.num, eSym.num())
+ ty, stateNum, prodNum := ptab.getAction(state.num, eSym.Num())
if ty != eAct.ty {
t.Fatalf("action type is mismatched; want: %v, got: %v", eAct.ty, ty)
}
@@ -319,10 +320,10 @@ func testAction(t *testing.T, expectedState *expectedState, state *lrState, ptab
}
}
for symNum := 0; symNum < termCount; symNum++ {
- if _, checked := nonEmptyEntries[symbolNum(symNum)]; checked {
+ if _, checked := nonEmptyEntries[symbol.SymbolNum(symNum)]; checked {
continue
}
- ty, stateNum, prodNum := ptab.getAction(state.num, symbolNum(symNum))
+ ty, stateNum, prodNum := ptab.getAction(state.num, symbol.SymbolNum(symNum))
if ty != ActionTypeError {
t.Errorf("unexpected ACTION entry; state: #%v, symbol: #%v, action type: %v, next state: #%v, prodction: #%v", state.num, symNum, ty, stateNum, prodNum)
}
@@ -330,15 +331,15 @@ func testAction(t *testing.T, expectedState *expectedState, state *lrState, ptab
}
func testGoTo(t *testing.T, expectedState *expectedState, state *lrState, ptab *ParsingTable, automaton *lr0Automaton, nonTermCount int) {
- nonEmptyEntries := map[symbolNum]struct{}{}
+ nonEmptyEntries := map[symbol.SymbolNum]struct{}{}
for eSym, eGoTo := range expectedState.goTos {
- nonEmptyEntries[eSym.num()] = struct{}{}
+ nonEmptyEntries[eSym.Num()] = struct{}{}
eNextState, err := newKernel(eGoTo)
if err != nil {
t.Fatal(err)
}
- ty, stateNum := ptab.getGoTo(state.num, eSym.num())
+ ty, stateNum := ptab.getGoTo(state.num, eSym.Num())
if ty != GoToTypeRegistered {
t.Fatalf("GOTO entry was not found; state: #%v, symbol: #%v", state.num, eSym)
}
@@ -351,10 +352,10 @@ func testGoTo(t *testing.T, expectedState *expectedState, state *lrState, ptab *
}
}
for symNum := 0; symNum < nonTermCount; symNum++ {
- if _, checked := nonEmptyEntries[symbolNum(symNum)]; checked {
+ if _, checked := nonEmptyEntries[symbol.SymbolNum(symNum)]; checked {
continue
}
- ty, _ := ptab.getGoTo(state.num, symbolNum(symNum))
+ ty, _ := ptab.getGoTo(state.num, symbol.SymbolNum(symNum))
if ty != GoToTypeError {
t.Errorf("unexpected GOTO entry; state: #%v, symbol: #%v", state.num, symNum)
}
generated by cgit v1.2.3 (git 2.49.0) at 2025-07-13 12:56:45 +0000