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Step 91: LSP diagnostics integration

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Bill
2026-02-09 09:55:48 -07:00
parent 9083e05471
commit e3439b2a3d
5 changed files with 244 additions and 0 deletions
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93
editor/src/main.cpp
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@@ -24,6 +24,7 @@
#include "WelcomeScreen.h"
#include "DragDropHandler.h"
#include "FileWatcher.h"
#include "LSPClient.h"
#include "ast/Generator.h"
#include <cstdio>
@@ -52,6 +53,7 @@ struct BufferState {
bool modified = false;
int cursorLine = 1;
int cursorCol = 1;
int lspVersion = 1;
std::string editBuf;
std::vector<HighlightSpan> highlights;
bool highlightsDirty = true;
@@ -82,9 +84,49 @@ struct EditorState {
FileNode fileTreeRoot;
bool fileTreeDirty = true;
FileWatcher watcher;
std::shared_ptr<LSPTransport> lspTransport;
std::shared_ptr<LSPClient> lsp;
BufferState* active() { return activeBuffer; }
static std::string toFileUri(const std::string& path) {
std::filesystem::path p(path);
return "file:///" + p.generic_string();
}
static std::string fromFileUri(const std::string& uri) {
const std::string prefix = "file:///";
if (uri.rfind(prefix, 0) != 0) return uri;
std::string path = uri.substr(prefix.size());
std::replace(path.begin(), path.end(), '/', '\\');
return path;
}
static int byteOffsetForLineCol(const std::string& text, int lineZero, int colZero) {
if (lineZero < 0) lineZero = 0;
if (colZero < 0) colZero = 0;
int line = 0;
int pos = 0;
while (pos < (int)text.size() && line < lineZero) {
if (text[pos] == '\n') ++line;
++pos;
}
int col = 0;
while (pos < (int)text.size() && text[pos] != '\n' && col < colZero) {
++pos;
++col;
}
return pos;
}
void jumpTo(BufferState* buf, int lineZero, int colZero) {
if (!buf) return;
int pos = byteOffsetForLineCol(buf->editBuf, lineZero, colZero);
buf->widget.setCursor(pos);
buf->cursorLine = lineZero + 1;
buf->cursorCol = colZero + 1;
}
std::string makeUntitledName() const {
if (!buffers.hasBuffer("(untitled)")) return "(untitled)";
int i = 1;
@@ -111,10 +153,14 @@ struct EditorState {
state->editBuf = content;
state->highlightsDirty = true;
state->modified = false;
state->lspVersion = 1;
buffers.openBuffer(path, content, language);
activeBuffer = state.get();
bufferStates[path] = std::move(state);
if (path.rfind("(untitled", 0) != 0) watcher.watch(path);
if (lsp && path.rfind("(untitled", 0) != 0) {
lsp->didOpen(toFileUri(path), language, content, activeBuffer->lspVersion);
}
}
void switchToBuffer(const std::string& path) {
@@ -186,6 +232,10 @@ struct EditorState {
active()->sync.syncNow();
active()->highlightsDirty = true;
active()->modified = true;
if (lsp && active()->path.rfind("(untitled", 0) != 0) {
active()->lspVersion += 1;
lsp->didChange(toFileUri(active()->path), active()->editBuf, active()->lspVersion);
}
}
void doUndo() {
@@ -249,6 +299,7 @@ struct EditorState {
out.close();
active()->modified = false;
outputLog += "Saved: " + active()->path + "\n";
if (lsp) lsp->didSave(toFileUri(active()->path), active()->editBuf);
} else {
outputLog += "Error saving: " + active()->path + "\n";
}
@@ -342,6 +393,13 @@ struct EditorState {
}
};
struct NullLSPTransport : public LSPTransport {
void send(const std::string& msg) override { (void)msg; }
bool receive(std::string& out) override { (void)out; return false; }
bool isOpen() const override { return false; }
void close() override {}
};
// ---------------------------------------------------------------------------
// ImGui InputTextMultiline with std::string resize callback
@@ -643,6 +701,8 @@ int main(int, char**) {
// Editor state
EditorState state;
state.init();
state.lspTransport = std::make_shared<NullLSPTransport>();
state.lsp = std::make_shared<LSPClient>(state.lspTransport);
// File dialog defaults
std::string lastDialogPath;
@@ -958,6 +1018,39 @@ int main(int, char**) {
ImGui::EndTabItem();
}
// Problems (LSP diagnostics)
if (ImGui::BeginTabItem("Problems")) {
ImGui::PushFont(monoFont);
ImGui::BeginChild("##problemsScroll", ImVec2(0, 0), false);
auto diags = state.lsp ? state.lsp->getDiagnostics() : std::vector<LSPClient::Diagnostic>{};
if (diags.empty()) {
ImGui::TextDisabled("(no diagnostics)");
} else {
for (const auto& d : diags) {
const char* sev = "Unknown";
if (d.severity == 1) sev = "Error";
else if (d.severity == 2) sev = "Warning";
else if (d.severity == 3) sev = "Info";
else if (d.severity == 4) sev = "Hint";
std::string path = EditorState::fromFileUri(d.uri);
std::string label = "[" + std::string(sev) + "] " + d.message +
" (" + path + ":" + std::to_string(d.range.start.line + 1) +
":" + std::to_string(d.range.start.character + 1) + ")";
if (ImGui::Selectable(label.c_str())) {
if (!path.empty()) {
if (state.buffers.hasBuffer(path)) state.switchToBuffer(path);
else state.doOpen(path);
state.jumpTo(state.active(), d.range.start.line, d.range.start.character);
}
}
}
}
ImGui::EndChild();
ImGui::PopFont();
ImGui::EndTabItem();
}
// AST view
if (ImGui::BeginTabItem("AST")) {
ImGui::PushFont(monoFont);