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Implemented more robust LSP diagnostics and better parsing logic

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This commit is contained in:
Martino Ferrari
2026-01-30 18:21:24 +01:00
parent b4d3edab9d
commit f121f7c15d
10 changed files with 422 additions and 129 deletions
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18
cmd/mdt/main.go
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@@ -138,6 +138,7 @@ func runCheck(args []string) {
}
tree := index.NewProjectTree()
syntaxErrors := 0
for _, file := range args {
content, err := os.ReadFile(file)
@@ -147,14 +148,18 @@ func runCheck(args []string) {
}
p := parser.NewParser(string(content))
config, err := p.Parse()
if err != nil {
logger.Printf("%s: Grammar error: %v\n", file, err)
continue
config, _ := p.Parse()
if len(p.Errors()) > 0 {
syntaxErrors += len(p.Errors())
for _, e := range p.Errors() {
logger.Printf("%s: Grammar error: %v\n", file, e)
}
}
if config != nil {
tree.AddFile(file, config)
}
}
v := validator.NewValidator(tree, ".")
v.ValidateProject()
@@ -167,8 +172,9 @@ func runCheck(args []string) {
logger.Printf("%s:%d:%d: %s: %s\n", diag.File, diag.Position.Line, diag.Position.Column, level, diag.Message)
}
if len(v.Diagnostics) > 0 {
logger.Printf("\nFound %d issues.\n", len(v.Diagnostics))
totalIssues := len(v.Diagnostics) + syntaxErrors
if totalIssues > 0 {
logger.Printf("\nFound %d issues.\n", totalIssues)
} else {
logger.Println("No issues found.")
}

15
docs/CODE_DOCUMENTATION.md
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@@ -43,7 +43,7 @@ The brain of the system. It maintains a holistic view of the project.
* **ProjectTree**: The central data structure. It holds the root of the configuration hierarchy (`Root`), references, and isolated files.
* **ProjectNode**: Represents a logical node in the configuration. Since a node can be defined across multiple files (fragments), `ProjectNode` aggregates these fragments. It also stores locally defined variables in its `Variables` map.
* **NodeMap**: A hash map index (`map[string][]*ProjectNode`) for $O(1)$ symbol lookups, optimizing `FindNode` operations.
* **Reference Resolution**: The `ResolveReferences` method links `Reference` objects to their target `ProjectNode` or `VariableDefinition`. It uses `resolveScopedName` to respect lexical scoping rules, searching up the hierarchy from the reference's container.
* **Reference Resolution**: The `ResolveReferences` method links `Reference` objects to their target `ProjectNode` or `VariableDefinition`. It uses `ResolveName` (exported) which respects lexical scoping rules by searching the hierarchy upwards from the reference's container, using `FindNode` for deep searches within each scope.
### 3. `internal/validator`
@@ -100,12 +100,13 @@ Manages CUE schemas.
5. Diagnostics are printed (CLI) or published via `textDocument/publishDiagnostics` (LSP).
### Threading Check Logic
1. Finds the `RealTimeApplication` node.
2. Iterates through `States` and `Threads`.
3. For each Thread, resolves the `Functions` (GAMs).
4. For each GAM, resolves connected `DataSources` via Input/Output signals.
5. Maps `DataSource -> Thread` within the context of a State.
6. If a DataSource is seen in >1 Thread, it checks the `#meta.multithreaded` property. If false (default), an error is raised.
1. Iterates all `RealTimeApplication` nodes found in the project.
2. For each App:
1. Finds `States` and `Threads`.
2. For each Thread, resolves the `Functions` (GAMs).
3. For each GAM, resolves connected `DataSources` via Input/Output signals.
4. Maps `DataSource -> Thread` within the context of a State.
5. If a DataSource is seen in >1 Thread, it checks the `#meta.multithreaded` property. If false (default), an error is raised.
### INOUT Ordering Logic
1. Iterates Threads.

24
docs/CONFIGURATION_GUIDE.md
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@@ -173,9 +173,11 @@ You can define variables using `#var`. The type expression supports CUE syntax.
```
### Usage
Reference a variable using `@`:
Reference a variable using `$` (preferred) or `@`:
```marte
Field = $MyVar
// or
Field = @MyVar
```
@@ -187,7 +189,7 @@ You can use operators in field values. Supported operators:
```marte
Field1 = 10 + 20 * 2 // 50
Field2 = "Hello " .. "World"
Field3 = @MyVar + 5
Field3 = $MyVar + 5
```
### Build Override
@@ -197,3 +199,21 @@ You can override variable values during build:
mdt build -vMyVar=200 -vEnv="PROD" src/*.marte
```
## 7. Validation Rules (Detail)
### Data Flow Validation
`mdt` checks for logical data flow errors:
- **Consumed before Produced**: If a GAM reads an INOUT signal that hasn't been written by a previous GAM in the same cycle, an error is reported.
- **Produced but not Consumed**: If a GAM writes an INOUT signal that is never read by subsequent GAMs, a warning is reported.
- **Initialization**: Providing a `Value` field in an `InputSignal` treats it as "produced" (initialized), resolving "Consumed before Produced" errors.
### Threading Rules
A DataSource that is **not** marked as multithreaded (default) cannot be used by GAMs running in different threads within the same State.
To allow sharing, the DataSource class in the schema must have `#meta: multithreaded: true`.
### Implicit vs Explicit Signals
- **Explicit**: Signal defined in `DataSource.Signals`.
- **Implicit**: Signal used in GAM but not defined in DataSource. `mdt` reports a warning unless suppressed.

3
docs/EDITOR_INTEGRATION.md
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@@ -2,11 +2,12 @@
`mdt` includes a Language Server Protocol (LSP) implementation that provides features like:
- Syntax highlighting and error reporting
- Syntax highlighting and error reporting (Parser & Semantic)
- Auto-completion
- Go to Definition / References
- Hover documentation
- Symbol renaming
- Incremental synchronization (Robust)
The LSP server is started via the command:

42
internal/index/index.go
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@@ -435,7 +435,7 @@ func (pt *ProjectTree) ResolveReferences() {
continue
}
ref.Target = pt.resolveScopedName(container, ref.Name)
ref.Target = pt.ResolveName(container, ref.Name, nil)
}
}
@@ -617,52 +617,20 @@ func (pt *ProjectTree) findNodeContaining(node *ProjectNode, file string, pos pa
return nil
}
func (pt *ProjectTree) resolveScopedName(ctx *ProjectNode, name string) *ProjectNode {
func (pt *ProjectTree) ResolveName(ctx *ProjectNode, name string, predicate func(*ProjectNode) bool) *ProjectNode {
if ctx == nil {
return pt.FindNode(pt.Root, name, nil)
return pt.FindNode(pt.Root, name, predicate)
}
parts := strings.Split(name, ".")
first := parts[0]
normFirst := NormalizeName(first)
var startNode *ProjectNode
curr := ctx
for curr != nil {
if child, ok := curr.Children[normFirst]; ok {
startNode = child
break
if found := pt.FindNode(curr, name, predicate); found != nil {
return found
}
curr = curr.Parent
}
if startNode == nil && ctx != pt.Root {
if child, ok := pt.Root.Children[normFirst]; ok {
startNode = child
}
}
if startNode == nil {
// Fallback to deep search from context root
root := ctx
for root.Parent != nil {
root = root.Parent
}
return pt.FindNode(root, name, nil)
}
curr = startNode
for i := 1; i < len(parts); i++ {
norm := NormalizeName(parts[i])
if child, ok := curr.Children[norm]; ok {
curr = child
} else {
return nil
}
}
return curr
}
func (pt *ProjectTree) ResolveVariable(ctx *ProjectNode, name string) *VariableInfo {
curr := ctx

46
internal/lsp/server.go
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@@ -336,13 +336,9 @@ func HandleDidOpen(params DidOpenTextDocumentParams) {
path := uriToPath(params.TextDocument.URI)
Documents[params.TextDocument.URI] = params.TextDocument.Text
p := parser.NewParser(params.TextDocument.Text)
config, err := p.Parse()
config, _ := p.Parse()
if err != nil {
publishParserError(params.TextDocument.URI, err)
} else {
publishParserError(params.TextDocument.URI, nil)
}
publishParserErrors(params.TextDocument.URI, p.Errors())
if config != nil {
Tree.AddFile(path, config)
@@ -369,13 +365,9 @@ func HandleDidChange(params DidChangeTextDocumentParams) {
Documents[uri] = text
path := uriToPath(uri)
p := parser.NewParser(text)
config, err := p.Parse()
config, _ := p.Parse()
if err != nil {
publishParserError(uri, err)
} else {
publishParserError(uri, nil)
}
publishParserErrors(uri, p.Errors())
if config != nil {
Tree.AddFile(path, config)
@@ -465,6 +457,9 @@ func runValidation(_ string) {
// Collect all known files to ensure we clear diagnostics for fixed files
knownFiles := make(map[string]bool)
collectFiles(Tree.Root, knownFiles)
for _, node := range Tree.IsolatedFiles {
collectFiles(node, knownFiles)
}
// Initialize all known files with empty diagnostics
for f := range knownFiles {
@@ -473,8 +468,10 @@ func runValidation(_ string) {
for _, d := range v.Diagnostics {
severity := 1 // Error
levelStr := "ERROR"
if d.Level == validator.LevelWarning {
severity = 2 // Warning
levelStr = "WARNING"
}
diag := LSPDiagnostic{
@@ -483,7 +480,7 @@ func runValidation(_ string) {
End: Position{Line: d.Position.Line - 1, Character: d.Position.Column - 1 + 10}, // Arbitrary length
},
Severity: severity,
Message: d.Message,
Message: fmt.Sprintf("%s: %s", levelStr, d.Message),
Source: "mdt",
}
@@ -508,20 +505,10 @@ func runValidation(_ string) {
}
}
func publishParserError(uri string, err error) {
if err == nil {
notification := JsonRpcMessage{
Jsonrpc: "2.0",
Method: "textDocument/publishDiagnostics",
Params: mustMarshal(PublishDiagnosticsParams{
URI: uri,
Diagnostics: []LSPDiagnostic{},
}),
}
send(notification)
return
}
func publishParserErrors(uri string, errors []error) {
diagnostics := []LSPDiagnostic{}
for _, err := range errors {
var line, col int
var msg string
// Try parsing "line:col: message"
@@ -547,19 +534,24 @@ func publishParserError(uri string, err error) {
Message: msg,
Source: "mdt-parser",
}
diagnostics = append(diagnostics, diag)
}
notification := JsonRpcMessage{
Jsonrpc: "2.0",
Method: "textDocument/publishDiagnostics",
Params: mustMarshal(PublishDiagnosticsParams{
URI: uri,
Diagnostics: []LSPDiagnostic{diag},
Diagnostics: diagnostics,
}),
}
send(notification)
}
func collectFiles(node *index.ProjectNode, files map[string]bool) {
if node == nil {
return
}
for _, frag := range node.Fragments {
files[frag.File] = true
}

6
internal/parser/parser.go
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@@ -299,6 +299,8 @@ func (p *Parser) parseAtom() (Value, bool) {
return &ReferenceValue{Position: tok.Position, Value: tok.Value}, true
case TokenVariableReference:
return &VariableReferenceValue{Position: tok.Position, Name: tok.Value}, true
case TokenObjectIdentifier:
return &VariableReferenceValue{Position: tok.Position, Name: tok.Value}, true
case TokenLBrace:
arr := &ArrayValue{Position: tok.Position}
for {
@@ -380,3 +382,7 @@ func (p *Parser) parseVariableDefinition(startTok Token) (Definition, bool) {
DefaultValue: defVal,
}, true
}
func (p *Parser) Errors() []error {
return p.errors
}

44
internal/validator/validator.go
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@@ -304,7 +304,7 @@ func (v *Validator) validateGAMSignal(gamNode, signalNode *index.ProjectNode, di
return // Ignore implicit signals or missing datasource (handled elsewhere if mandatory)
}
dsNode := v.resolveReference(dsName, v.getNodeFile(signalNode), isDataSource)
dsNode := v.resolveReference(dsName, signalNode, isDataSource)
if dsNode == nil {
v.Diagnostics = append(v.Diagnostics, Diagnostic{
Level: LevelError,
@@ -565,17 +565,8 @@ func (v *Validator) getFieldValue(f *parser.Field, ctx *index.ProjectNode) strin
return ""
}
func (v *Validator) resolveReference(name string, file string, predicate func(*index.ProjectNode) bool) *index.ProjectNode {
if isoNode, ok := v.Tree.IsolatedFiles[file]; ok {
if found := v.Tree.FindNode(isoNode, name, predicate); found != nil {
return found
}
return nil
}
if v.Tree.Root == nil {
return nil
}
return v.Tree.FindNode(v.Tree.Root, name, predicate)
func (v *Validator) resolveReference(name string, ctx *index.ProjectNode, predicate func(*index.ProjectNode) bool) *index.ProjectNode {
return v.Tree.ResolveName(ctx, name, predicate)
}
func (v *Validator) getNodeClass(node *index.ProjectNode) string {
@@ -740,7 +731,7 @@ func (v *Validator) checkFunctionsArray(node *index.ProjectNode, fields map[stri
if arr, ok := f.Value.(*parser.ArrayValue); ok {
for _, elem := range arr.Elements {
if ref, ok := elem.(*parser.ReferenceValue); ok {
target := v.resolveReference(ref.Value, v.getNodeFile(node), isGAM)
target := v.resolveReference(ref.Value, node, isGAM)
if target == nil {
v.Diagnostics = append(v.Diagnostics, Diagnostic{
Level: LevelError,
@@ -799,19 +790,20 @@ func (v *Validator) CheckDataSourceThreading() {
return
}
// 1. Find RealTimeApplication
var appNode *index.ProjectNode
var appNodes []*index.ProjectNode
findApp := func(n *index.ProjectNode) {
if cls, ok := n.Metadata["Class"]; ok && cls == "RealTimeApplication" {
appNode = n
appNodes = append(appNodes, n)
}
}
v.Tree.Walk(findApp)
if appNode == nil {
return
for _, appNode := range appNodes {
v.checkAppDataSourceThreading(appNode)
}
}
func (v *Validator) checkAppDataSourceThreading(appNode *index.ProjectNode) {
// 2. Find States
var statesNode *index.ProjectNode
if s, ok := appNode.Children["States"]; ok {
@@ -882,7 +874,7 @@ func (v *Validator) getThreadGAMs(thread *index.ProjectNode) []*index.ProjectNod
if arr, ok := f.Value.(*parser.ArrayValue); ok {
for _, elem := range arr.Elements {
if ref, ok := elem.(*parser.ReferenceValue); ok {
target := v.resolveReference(ref.Value, v.getNodeFile(thread), isGAM)
target := v.resolveReference(ref.Value, thread, isGAM)
if target != nil {
gams = append(gams, target)
}
@@ -904,7 +896,7 @@ func (v *Validator) getGAMDataSources(gam *index.ProjectNode) []*index.ProjectNo
fields := v.getFields(sig)
if dsFields, ok := fields["DataSource"]; ok && len(dsFields) > 0 {
dsName := v.getFieldValue(dsFields[0], sig)
dsNode := v.resolveReference(dsName, v.getNodeFile(sig), isDataSource)
dsNode := v.resolveReference(dsName, sig, isDataSource)
if dsNode != nil {
dsMap[dsNode] = true
}
@@ -938,18 +930,20 @@ func (v *Validator) CheckINOUTOrdering() {
return
}
var appNode *index.ProjectNode
var appNodes []*index.ProjectNode
findApp := func(n *index.ProjectNode) {
if cls, ok := n.Metadata["Class"]; ok && cls == "RealTimeApplication" {
appNode = n
appNodes = append(appNodes, n)
}
}
v.Tree.Walk(findApp)
if appNode == nil {
return
for _, appNode := range appNodes {
v.checkAppINOUTOrdering(appNode)
}
}
func (v *Validator) checkAppINOUTOrdering(appNode *index.ProjectNode) {
var statesNode *index.ProjectNode
if s, ok := appNode.Children["States"]; ok {
statesNode = s
@@ -1049,7 +1043,7 @@ func (v *Validator) processGAMSignalsForOrdering(gam *index.ProjectNode, contain
if dsNode == nil {
if dsFields, ok := fields["DataSource"]; ok && len(dsFields) > 0 {
dsName := v.getFieldValue(dsFields[0], sig)
dsNode = v.resolveReference(dsName, v.getNodeFile(sig), isDataSource)
dsNode = v.resolveReference(dsName, sig, isDataSource)
}
if aliasFields, ok := fields["Alias"]; ok && len(aliasFields) > 0 {
sigName = v.getFieldValue(aliasFields[0], sig)

101
test/lsp_fuzz_test.go Normal file
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@@ -0,0 +1,101 @@
package integration
import (
"math/rand"
"testing"
"time"
"github.com/marte-community/marte-dev-tools/internal/lsp"
)
func TestIncrementalFuzz(t *testing.T) {
// Initialize
lsp.Documents = make(map[string]string)
uri := "file://fuzz.marte"
currentText := ""
lsp.Documents[uri] = currentText
rand.Seed(time.Now().UnixNano())
// Apply 1000 random edits
for i := 0; i < 1000; i++ {
// Randomly choose Insert or Delete
isInsert := rand.Intn(2) == 0
change := lsp.TextDocumentContentChangeEvent{}
// Use simple ascii string
length := len(currentText)
if isInsert || length == 0 {
// Insert
pos := 0
if length > 0 {
pos = rand.Intn(length + 1)
}
insertStr := "X"
if rand.Intn(5) == 0 { insertStr = "\n" }
if rand.Intn(10) == 0 { insertStr = "longstring" }
// Calculate Line/Char for pos
line, char := offsetToLineChar(currentText, pos)
change.Range = &lsp.Range{
Start: lsp.Position{Line: line, Character: char},
End: lsp.Position{Line: line, Character: char},
}
change.Text = insertStr
// Expected
currentText = currentText[:pos] + insertStr + currentText[pos:]
} else {
// Delete
start := rand.Intn(length)
end := start + 1 + rand.Intn(length - start) // at least 1 char
// Range
l1, c1 := offsetToLineChar(currentText, start)
l2, c2 := offsetToLineChar(currentText, end)
change.Range = &lsp.Range{
Start: lsp.Position{Line: l1, Character: c1},
End: lsp.Position{Line: l2, Character: c2},
}
change.Text = ""
currentText = currentText[:start] + currentText[end:]
}
// Apply
lsp.HandleDidChange(lsp.DidChangeTextDocumentParams{
TextDocument: lsp.VersionedTextDocumentIdentifier{URI: uri, Version: i},
ContentChanges: []lsp.TextDocumentContentChangeEvent{change},
})
// Verify
if lsp.Documents[uri] != currentText {
t.Fatalf("Fuzz iteration %d failed.\nExpected len: %d\nGot len: %d\nChange: %+v", i, len(currentText), len(lsp.Documents[uri]), change)
}
}
}
func offsetToLineChar(text string, offset int) (int, int) {
line := 0
char := 0
for i, r := range text {
if i == offset {
return line, char
}
if r == '\n' {
line++
char = 0
} else {
char++
}
}
if offset == len(text) {
return line, char
}
return -1, -1
}

204
test/lsp_incremental_correctness_test.go Normal file
View File

@@ -0,0 +1,204 @@
package integration
import (
"bytes"
"strings"
"testing"
"github.com/marte-community/marte-dev-tools/internal/index"
"github.com/marte-community/marte-dev-tools/internal/lsp"
"github.com/marte-community/marte-dev-tools/internal/schema"
)
func TestIncrementalCorrectness(t *testing.T) {
lsp.Documents = make(map[string]string)
uri := "file://test.txt"
initial := "12345\n67890"
lsp.Documents[uri] = initial
// Edit 1: Insert "A" at 0:1 -> "1A2345\n67890"
change1 := lsp.TextDocumentContentChangeEvent{
Range: &lsp.Range{Start: lsp.Position{Line: 0, Character: 1}, End: lsp.Position{Line: 0, Character: 1}},
Text: "A",
}
lsp.HandleDidChange(lsp.DidChangeTextDocumentParams{
TextDocument: lsp.VersionedTextDocumentIdentifier{URI: uri},
ContentChanges: []lsp.TextDocumentContentChangeEvent{change1},
})
if lsp.Documents[uri] != "1A2345\n67890" {
t.Errorf("Edit 1 failed: %q", lsp.Documents[uri])
}
// Edit 2: Delete newline (merge lines)
// "1A2345\n67890" -> "1A234567890"
// \n is at index 6.
// 0:6 points to \n? "1A2345" length is 6.
// So 0:6 is AFTER '5', at '\n'.
// 1:0 is AFTER '\n', at '6'.
// Range 0:6 - 1:0 covers '\n'.
change2 := lsp.TextDocumentContentChangeEvent{
Range: &lsp.Range{Start: lsp.Position{Line: 0, Character: 6}, End: lsp.Position{Line: 1, Character: 0}},
Text: "",
}
lsp.HandleDidChange(lsp.DidChangeTextDocumentParams{
TextDocument: lsp.VersionedTextDocumentIdentifier{URI: uri},
ContentChanges: []lsp.TextDocumentContentChangeEvent{change2},
})
if lsp.Documents[uri] != "1A234567890" {
t.Errorf("Edit 2 failed: %q", lsp.Documents[uri])
}
// Edit 3: Add newline at end
// "1A234567890" len 11.
// 0:11.
change3 := lsp.TextDocumentContentChangeEvent{
Range: &lsp.Range{Start: lsp.Position{Line: 0, Character: 11}, End: lsp.Position{Line: 0, Character: 11}},
Text: "\n",
}
lsp.HandleDidChange(lsp.DidChangeTextDocumentParams{
TextDocument: lsp.VersionedTextDocumentIdentifier{URI: uri},
ContentChanges: []lsp.TextDocumentContentChangeEvent{change3},
})
if lsp.Documents[uri] != "1A234567890\n" {
t.Errorf("Edit 3 failed: %q", lsp.Documents[uri])
}
}
func TestIncrementalAppValidation(t *testing.T) {
// Setup
lsp.Tree = index.NewProjectTree()
lsp.Documents = make(map[string]string)
lsp.GlobalSchema = schema.LoadFullSchema(".")
var buf bytes.Buffer
lsp.Output = &buf
content := `// Test app
+App = {
Class = RealTimeApplication
+Data = {
Class = ReferenceContainer
DefaultDataSource = DDB
+DDB = {
Class = GAMDataSource
}
+TimingDataSource = {
Class = TimingDataSource
}
}
+Functions = {
Class = ReferenceContainer
+A = {
Class = IOGAM
InputSignals = {
A = {
DataSource = DDB
Type = uint32
// Placeholder
}
}
OutputSignals = {
B = {
DataSource = DDB
Type = uint32
}
}
}
}
+States = {
Class = ReferenceContainer
+State = {
Class =RealTimeState
Threads = {
+Th1 = {
Class = RealTimeThread
Functions = {A}
}
}
}
}
+Scheduler = {
Class = GAMScheduler
TimingDataSource = TimingDataSource
}
}
`
uri := "file://app_inc.marte"
// 1. Open
lsp.HandleDidOpen(lsp.DidOpenTextDocumentParams{
TextDocument: lsp.TextDocumentItem{URI: uri, Text: content},
})
out := buf.String()
// Signal A is never produced. Should have consumed error.
if !strings.Contains(out, "ERROR: INOUT Signal 'A'") {
t.Error("Missing consumed error for A")
}
// Signal B is Output, never consumed.
if !strings.Contains(out, "WARNING: INOUT Signal 'B'") {
t.Error("Missing produced error for B")
}
buf.Reset()
// 2. Insert comment at start
// Expecting same errors
change1 := lsp.TextDocumentContentChangeEvent{
Range: &lsp.Range{Start: lsp.Position{Line: 0, Character: 0}, End: lsp.Position{Line: 0, Character: 0}},
Text: "// Comment\n",
}
lsp.HandleDidChange(lsp.DidChangeTextDocumentParams{
TextDocument: lsp.VersionedTextDocumentIdentifier{URI: uri},
ContentChanges: []lsp.TextDocumentContentChangeEvent{change1},
})
out = buf.String()
// Signal A is never produced. Should have consumed error.
if !strings.Contains(out, "ERROR: INOUT Signal 'A'") {
t.Error("Missing consumed error for A")
}
// Signal B is Output, never consumed.
if !strings.Contains(out, "WARNING: INOUT Signal 'B'") {
t.Error("Missing produced error for B")
}
buf.Reset()
// 3. Add Value to A
currentText := lsp.Documents[uri]
idx := strings.Index(currentText, "Placeholder")
if idx == -1 {
t.Fatal("Could not find anchor string")
}
idx = strings.Index(currentText[idx:], "\n") + idx
insertPos := idx + 1
line, char := offsetToLineChar(currentText, insertPos)
change2 := lsp.TextDocumentContentChangeEvent{
Range: &lsp.Range{Start: lsp.Position{Line: line, Character: char}, End: lsp.Position{Line: line, Character: char}},
Text: "Value = 10\n",
}
lsp.HandleDidChange(lsp.DidChangeTextDocumentParams{
TextDocument: lsp.VersionedTextDocumentIdentifier{URI: uri},
ContentChanges: []lsp.TextDocumentContentChangeEvent{change2},
})
out = buf.String()
// Signal A has now a Value field and so it is produced. Should NOT have consumed error.
if strings.Contains(out, "ERROR: INOUT Signal 'A'") {
t.Error("Unexpected consumed error for A")
}
// Signal B is Output, never consumed.
if !strings.Contains(out, "WARNING: INOUT Signal 'B'") {
t.Error("Missing produced error for B")
}
}