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/*
* Copyright 2018 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "definition.h"
#ifdef SK_BUILD_FOR_WIN
#include <Windows.h>
#endif
TextParser::TextParser(const Definition* definition) :
TextParser(definition->fFileName, definition->fContentStart, definition->fContentEnd,
definition->fLineCount) {
}
string TextParser::ReportFilename(string file) {
string fullName;
#ifdef SK_BUILD_FOR_WIN
TCHAR pathChars[MAX_PATH];
DWORD pathLen = GetCurrentDirectory(MAX_PATH, pathChars);
for (DWORD index = 0; index < pathLen; ++index) {
fullName += pathChars[index] == (char)pathChars[index] ? (char)pathChars[index] : '?';
}
fullName += '\\';
#endif
fullName += file;
return fullName;
}
void TextParser::reportError(const char* errorStr) const {
this->reportWarning(errorStr);
SkDebugf(""); // convenient place to set a breakpoint
}
void TextParser::reportWarning(const char* errorStr) const {
const char* lineStart = fLine;
if (lineStart >= fEnd) {
lineStart = fChar;
}
SkASSERT(lineStart < fEnd);
TextParser err(fFileName, lineStart, fEnd, fLineCount);
size_t lineLen = this->lineLength();
ptrdiff_t spaces = fChar - lineStart;
while (spaces > 0 && (size_t) spaces > lineLen) {
++err.fLineCount;
err.fLine += lineLen;
spaces -= lineLen;
lineLen = err.lineLength();
}
string fullName = this->ReportFilename(fFileName);
SkDebugf("\n%s(%zd): error: %s\n", fullName.c_str(), err.fLineCount, errorStr);
if (0 == lineLen) {
SkDebugf("[blank line]\n");
} else {
while (lineLen > 0 && '\n' == err.fLine[lineLen - 1]) {
--lineLen;
}
SkDebugf("%.*s\n", (int) lineLen, err.fLine);
SkDebugf("%*s^\n", (int) spaces, "");
}
}
void TextParser::setForErrorReporting(const Definition* definition, const char* str) {
fFileName = definition->fFileName;
fStart = definition->fContentStart;
fLine = str;
while (fLine > fStart && fLine[-1] != '\n') {
--fLine;
}
fChar = str;
fEnd = definition->fContentEnd;
fLineCount = definition->fLineCount;
const char* lineInc = fStart;
while (lineInc < str) {
fLineCount += '\n' == *lineInc++;
}
}
string TextParser::typedefName() {
// look for typedef as one of three forms:
// typedef return-type (*NAME)(params);
// typedef alias NAME;
// typedef std::function<alias> NAME;
string builder;
const char* end = this->doubleLF();
if (!end) {
end = fEnd;
}
const char* altEnd = this->strnstr("#Typedef ##", end);
if (altEnd) {
end = this->strnchr('\n', end);
}
if (!end) {
return this->reportError<string>("missing typedef std::function end bracket >");
}
bool stdFunction = this->startsWith("std::function");
if (stdFunction) {
if (!this->skipToEndBracket('>')) {
return this->reportError<string>("missing typedef std::function end bracket >");
}
this->next();
this->skipWhiteSpace();
builder += string(fChar, end - fChar);
} else {
const char* paren = this->strnchr('(', end);
if (!paren) {
const char* lastWord = nullptr;
do {
this->skipToWhiteSpace();
if (fChar < end && isspace(fChar[0])) {
const char* whiteStart = fChar;
this->skipWhiteSpace();
// FIXME: test should be for fMC
if ('#' == fChar[0]) {
end = whiteStart;
break;
}
lastWord = fChar;
} else {
break;
}
} while (true);
if (!lastWord) {
return this->reportError<string>("missing typedef name");
}
builder += string(lastWord, end - lastWord);
} else {
this->skipTo(paren);
this->next();
if ('*' != this->next()) {
return this->reportError<string>("missing typedef function asterisk");
}
const char* nameStart = fChar;
if (!this->skipToEndBracket(')')) {
return this->reportError<string>("missing typedef function )");
}
builder += string(nameStart, fChar - nameStart);
if (!this->skipToEndBracket('(')) {
return this->reportError<string>("missing typedef params (");
}
if (! this->skipToEndBracket(')')) {
return this->reportError<string>("missing typedef params )");
}
this->skipTo(end);
}
}
return builder;
}
void MethodParser::skipToMethodEnd(Resolvable resolvable) {
if (this->eof()) {
return;
}
string name = fLocalName.length() ? fLocalName : fClassName;
if ('~' == this->peek()) {
this->next();
if (!this->startsWith(name.c_str())) {
--fChar;
return;
}
}
if (Resolvable::kSimple != resolvable
&& Resolvable::kInclude != resolvable
&& (this->startsWith(name.c_str()) || this->startsWith("operator"))) {
const char* ptr = this->anyOf("\n (");
if (ptr && '(' == *ptr && strncmp(ptr, "(...", 4)) {
this->skipToEndBracket(')');
SkAssertResult(')' == this->next());
this->skipExact("_const") || (Resolvable::kCode == resolvable
&& this->skipExact(" const"));
return;
}
}
if (this->startsWith("Sk") && this->wordEndsWith(".h")) { // allow include refs
this->skipToNonName();
} else {
this->skipFullName();
if (this->endsWith("operator")) {
const char* ptr = this->anyOf("\n (");
if (ptr && '(' == *ptr) {
this->skipToEndBracket(')');
SkAssertResult(')' == this->next());
this->skipExact("_const");
}
}
}
}
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