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Diffstat (limited to 'compiler/compiler.go')
-rw-r--r--compiler/compiler.go183
1 files changed, 152 insertions, 31 deletions
diff --git a/compiler/compiler.go b/compiler/compiler.go
index 439822c..cfd5faf 100644
--- a/compiler/compiler.go
+++ b/compiler/compiler.go
@@ -1,8 +1,11 @@
package compiler
import (
+ "bytes"
"fmt"
+ "github.com/nihei9/maleeni/compiler/dfa"
+ psr "github.com/nihei9/maleeni/compiler/parser"
"github.com/nihei9/maleeni/compressor"
"github.com/nihei9/maleeni/spec"
)
@@ -23,17 +26,24 @@ type compilerConfig struct {
compLv int
}
-func Compile(lexspec *spec.LexSpec, opts ...CompilerOption) (*spec.CompiledLexSpec, error) {
+type CompileError struct {
+ Kind spec.LexKindName
+ Fragment bool
+ Cause error
+ Detail string
+}
+
+func Compile(lexspec *spec.LexSpec, opts ...CompilerOption) (*spec.CompiledLexSpec, error, []*CompileError) {
err := lexspec.Validate()
if err != nil {
- return nil, fmt.Errorf("invalid lexical specification:\n%w", err)
+ return nil, fmt.Errorf("invalid lexical specification:\n%w", err), nil
}
config := &compilerConfig{}
for _, opt := range opts {
err := opt(config)
if err != nil {
- return nil, err
+ return nil, err, nil
}
}
@@ -44,9 +54,9 @@ func Compile(lexspec *spec.LexSpec, opts ...CompilerOption) (*spec.CompiledLexSp
}
for i, es := range modeEntries[1:] {
modeName := modeNames[i+1]
- modeSpec, err := compile(es, modeName2ID, fragmetns, config)
+ modeSpec, err, cerrs := compile(es, modeName2ID, fragmetns, config)
if err != nil {
- return nil, fmt.Errorf("failed to compile in %v mode: %w", modeName, err)
+ return nil, fmt.Errorf("failed to compile in %v mode: %w", modeName, err), cerrs
}
modeSpecs = append(modeSpecs, modeSpec)
}
@@ -95,10 +105,10 @@ func Compile(lexspec *spec.LexSpec, opts ...CompilerOption) (*spec.CompiledLexSp
KindIDs: kindIDs,
CompressionLevel: config.compLv,
Specs: modeSpecs,
- }, nil
+ }, nil, nil
}
-func groupEntriesByLexMode(entries []*spec.LexEntry) ([][]*spec.LexEntry, []spec.LexModeName, map[spec.LexModeName]spec.LexModeID, map[string]*spec.LexEntry) {
+func groupEntriesByLexMode(entries []*spec.LexEntry) ([][]*spec.LexEntry, []spec.LexModeName, map[spec.LexModeName]spec.LexModeID, map[spec.LexKindName]*spec.LexEntry) {
modeNames := []spec.LexModeName{
spec.LexModeNameNil,
spec.LexModeNameDefault,
@@ -112,10 +122,10 @@ func groupEntriesByLexMode(entries []*spec.LexEntry) ([][]*spec.LexEntry, []spec
nil,
{},
}
- fragments := map[string]*spec.LexEntry{}
+ fragments := map[spec.LexKindName]*spec.LexEntry{}
for _, e := range entries {
if e.Fragment {
- fragments[e.Kind.String()] = e
+ fragments[e.Kind] = e
continue
}
ms := e.Modes
@@ -139,15 +149,24 @@ func groupEntriesByLexMode(entries []*spec.LexEntry) ([][]*spec.LexEntry, []spec
return modeEntries, modeNames, modeName2ID, fragments
}
-func compile(entries []*spec.LexEntry, modeName2ID map[spec.LexModeName]spec.LexModeID, fragments map[string]*spec.LexEntry, config *compilerConfig) (*spec.CompiledLexModeSpec, error) {
+func compile(
+ entries []*spec.LexEntry,
+ modeName2ID map[spec.LexModeName]spec.LexModeID,
+ fragments map[spec.LexKindName]*spec.LexEntry,
+ config *compilerConfig,
+) (*spec.CompiledLexModeSpec, error, []*CompileError) {
var kindNames []spec.LexKindName
+ kindIDToName := map[spec.LexModeKindID]spec.LexKindName{}
var patterns map[spec.LexModeKindID][]byte
{
kindNames = append(kindNames, spec.LexKindNameNil)
patterns = map[spec.LexModeKindID][]byte{}
for i, e := range entries {
+ kindID := spec.LexModeKindID(i + 1)
+
kindNames = append(kindNames, e.Kind)
- patterns[spec.LexModeKindID(i+1)] = []byte(e.Pattern)
+ kindIDToName[kindID] = e.Kind
+ patterns[kindID] = []byte(e.Pattern)
}
}
@@ -170,39 +189,141 @@ func compile(entries []*spec.LexEntry, modeName2ID map[spec.LexModeName]spec.Lex
pop = append(pop, popV)
}
- fragmentPatterns := map[string][]byte{}
+ fragmentPatterns := map[spec.LexKindName][]byte{}
for k, e := range fragments {
fragmentPatterns[k] = []byte(e.Pattern)
}
- var root astNode
- var symTab *symbolTable
+ fragmentCPTrees := make(map[spec.LexKindName]psr.CPTree, len(fragmentPatterns))
+ {
+ var cerrs []*CompileError
+ for kind, pat := range fragmentPatterns {
+ p := psr.NewParser(kind, bytes.NewReader(pat))
+ t, err := p.Parse()
+ if err != nil {
+ if err == psr.ParseErr {
+ detail, cause := p.Error()
+ cerrs = append(cerrs, &CompileError{
+ Kind: kind,
+ Fragment: true,
+ Cause: cause,
+ Detail: detail,
+ })
+ } else {
+ cerrs = append(cerrs, &CompileError{
+ Kind: kind,
+ Fragment: true,
+ Cause: err,
+ })
+ }
+ continue
+ }
+ fragmentCPTrees[kind] = t
+ }
+ if len(cerrs) > 0 {
+ return nil, fmt.Errorf("compile error"), cerrs
+ }
+
+ err := psr.CompleteFragments(fragmentCPTrees)
+ if err != nil {
+ if err == psr.ParseErr {
+ for _, frag := range fragmentCPTrees {
+ kind, frags, err := frag.Describe()
+ if err != nil {
+ return nil, err, nil
+ }
+
+ cerrs = append(cerrs, &CompileError{
+ Kind: kind,
+ Fragment: true,
+ Cause: fmt.Errorf("fragment contains undefined fragments or cycles"),
+ Detail: fmt.Sprintf("%v", frags),
+ })
+ }
+
+ return nil, fmt.Errorf("compile error"), cerrs
+ }
+
+ return nil, err, nil
+ }
+ }
+
+ cpTrees := map[spec.LexModeKindID]psr.CPTree{}
{
- pats := make([]*patternEntry, len(patterns)+1)
- pats[spec.LexModeKindIDNil] = &patternEntry{
- id: spec.LexModeKindIDNil,
+ pats := make([]*psr.PatternEntry, len(patterns)+1)
+ pats[spec.LexModeKindIDNil] = &psr.PatternEntry{
+ ID: spec.LexModeKindIDNil,
}
for id, pattern := range patterns {
- pats[id] = &patternEntry{
- id: id,
- pattern: pattern,
+ pats[id] = &psr.PatternEntry{
+ ID: id,
+ Pattern: pattern,
}
}
- var err error
- root, symTab, err = parse(pats, fragmentPatterns)
- if err != nil {
- return nil, err
+ var cerrs []*CompileError
+ for _, pat := range pats {
+ if pat.ID == spec.LexModeKindIDNil {
+ continue
+ }
+
+ p := psr.NewParser(kindIDToName[pat.ID], bytes.NewReader(pat.Pattern))
+ t, err := p.Parse()
+ if err != nil {
+ if err == psr.ParseErr {
+ detail, cause := p.Error()
+ cerrs = append(cerrs, &CompileError{
+ Kind: kindIDToName[pat.ID],
+ Fragment: false,
+ Cause: cause,
+ Detail: detail,
+ })
+ } else {
+ cerrs = append(cerrs, &CompileError{
+ Kind: kindIDToName[pat.ID],
+ Fragment: false,
+ Cause: err,
+ })
+ }
+ continue
+ }
+
+ complete, err := psr.ApplyFragments(t, fragmentCPTrees)
+ if err != nil {
+ return nil, err, nil
+ }
+ if !complete {
+ _, frags, err := t.Describe()
+ if err != nil {
+ return nil, err, nil
+ }
+
+ cerrs = append(cerrs, &CompileError{
+ Kind: kindIDToName[pat.ID],
+ Fragment: false,
+ Cause: fmt.Errorf("pattern contains undefined fragments"),
+ Detail: fmt.Sprintf("%v", frags),
+ })
+ continue
+ }
+
+ cpTrees[pat.ID] = t
+ }
+ if len(cerrs) > 0 {
+ return nil, fmt.Errorf("compile error"), cerrs
}
}
var tranTab *spec.TransitionTable
{
- dfa := genDFA(root, symTab)
- var err error
- tranTab, err = genTransitionTable(dfa)
+ root, symTab, err := dfa.ConvertCPTreeToByteTree(cpTrees)
if err != nil {
- return nil, err
+ return nil, err, nil
+ }
+ d := dfa.GenDFA(root, symTab)
+ tranTab, err = dfa.GenTransitionTable(d)
+ if err != nil {
+ return nil, err, nil
}
}
@@ -211,12 +332,12 @@ func compile(entries []*spec.LexEntry, modeName2ID map[spec.LexModeName]spec.Lex
case 2:
tranTab, err = compressTransitionTableLv2(tranTab)
if err != nil {
- return nil, err
+ return nil, err, nil
}
case 1:
tranTab, err = compressTransitionTableLv1(tranTab)
if err != nil {
- return nil, err
+ return nil, err, nil
}
}
@@ -225,7 +346,7 @@ func compile(entries []*spec.LexEntry, modeName2ID map[spec.LexModeName]spec.Lex
Push: push,
Pop: pop,
DFA: tranTab,
- }, nil
+ }, nil, nil
}
const (
generated by cgit v1.2.3 (git 2.49.0) at 2025-07-13 00:27:04 +0000