comparison: src/lexer.cpp
src/lexer.cpp
- changeset 137
- 73d057b030d0
- parent 136
- 1c40bb4f8221
- child 138
- a426c1039655
equal
deleted
inserted
replaced
| 136:1c40bb4f8221 | 137:73d057b030d0 |
|---|---|
| 27 */ | 27 */ |
| 28 | 28 |
| 29 #include <cstring> | 29 #include <cstring> |
| 30 #include "lexer.h" | 30 #include "lexer.h" |
| 31 | 31 |
| 32 static StringList gFileNameStack; | 32 static StringList FileNameStack; |
| 33 static Lexer* gMainLexer = null; | 33 static Lexer* MainLexer = null; |
| 34 | 34 |
| 35 // ============================================================================= | 35 // ============================================================================= |
| 36 // | 36 // |
| 37 Lexer::Lexer() | 37 Lexer::Lexer() |
| 38 { | 38 { |
| 39 ASSERT_EQ (gMainLexer, null); | 39 ASSERT_EQ (MainLexer, null); |
| 40 gMainLexer = this; | 40 MainLexer = this; |
| 41 } | 41 } |
| 42 | 42 |
| 43 // ============================================================================= | 43 // ============================================================================= |
| 44 // | 44 // |
| 45 Lexer::~Lexer() | 45 Lexer::~Lexer() |
| 46 { | 46 { |
| 47 gMainLexer = null; | 47 MainLexer = null; |
| 48 } | 48 } |
| 49 | 49 |
| 50 // ============================================================================= | 50 // ============================================================================= |
| 51 // | 51 // |
| 52 void Lexer::processFile (String fileName) | 52 void Lexer::processFile (String fileName) |
| 53 { | 53 { |
| 54 gFileNameStack << fileName; | 54 FileNameStack << fileName; |
| 55 FILE* fp = fopen (fileName, "r"); | 55 FILE* fp = fopen (fileName, "r"); |
| 56 | 56 |
| 57 if (fp == null) | 57 if (fp == null) |
| 58 error ("couldn't open %1 for reading: %2", fileName, strerror (errno)); | 58 error ("couldn't open %1 for reading: %2", fileName, strerror (errno)); |
| 59 | 59 |
| 70 if (sc.getTokenText() == "include") | 70 if (sc.getTokenText() == "include") |
| 71 { | 71 { |
| 72 mustGetFromScanner (sc,Token::String); | 72 mustGetFromScanner (sc,Token::String); |
| 73 String fileName = sc.getTokenText(); | 73 String fileName = sc.getTokenText(); |
| 74 | 74 |
| 75 if (gFileNameStack.contains (fileName)) | 75 if (FileNameStack.contains (fileName)) |
| 76 error ("attempted to #include %1 recursively", sc.getTokenText()); | 76 error ("attempted to #include %1 recursively", sc.getTokenText()); |
| 77 | 77 |
| 78 processFile (fileName); | 78 processFile (fileName); |
| 79 } | 79 } |
| 80 else | 80 else |
| 96 m_tokens << tok; | 96 m_tokens << tok; |
| 97 } | 97 } |
| 98 } | 98 } |
| 99 | 99 |
| 100 m_tokenPosition = m_tokens.begin() - 1; | 100 m_tokenPosition = m_tokens.begin() - 1; |
| 101 gFileNameStack.removeOne (fileName); | 101 FileNameStack.removeOne (fileName); |
| 102 } | 102 } |
| 103 | 103 |
| 104 // ============================================================================ | 104 // ============================================================================ |
| 105 // | 105 // |
| 106 static bool isValidHeader (String header) | 106 static bool isValidHeader (String header) |
| 188 TokenInfo tok; | 188 TokenInfo tok; |
| 189 tok.type = sc.getTokenType(); | 189 tok.type = sc.getTokenType(); |
| 190 tok.text = sc.getTokenText(); | 190 tok.text = sc.getTokenText(); |
| 191 | 191 |
| 192 error ("at %1:%2: expected %3, got %4", | 192 error ("at %1:%2: expected %3, got %4", |
| 193 gFileNameStack.last(), | 193 FileNameStack.last(), |
| 194 sc.getLine(), | 194 sc.getLine(), |
| 195 describeTokenType (tt), | 195 DescribeTokenType (tt), |
| 196 describeToken (&tok)); | 196 DescribeToken (&tok)); |
| 197 } | 197 } |
| 198 } | 198 } |
| 199 | 199 |
| 200 // ============================================================================= | 200 // ============================================================================= |
| 201 // | 201 // |
| 215 if (&tokType == &toks.last()) | 215 if (&tokType == &toks.last()) |
| 216 toknames += " or "; | 216 toknames += " or "; |
| 217 elif (toknames.isEmpty() == false) | 217 elif (toknames.isEmpty() == false) |
| 218 toknames += ", "; | 218 toknames += ", "; |
| 219 | 219 |
| 220 toknames += describeTokenType (tokType); | 220 toknames += DescribeTokenType (tokType); |
| 221 } | 221 } |
| 222 | 222 |
| 223 error ("expected %1, got %2", toknames, describeToken (token())); | 223 error ("expected %1, got %2", toknames, DescribeToken (token())); |
| 224 } | 224 } |
| 225 | 225 |
| 226 // ============================================================================= | 226 // ============================================================================= |
| 227 // | 227 // |
| 228 int Lexer::getOneSymbol (const StringList& syms) | 228 int Lexer::getOneSymbol (const StringList& syms) |
| 237 if (syms[i] == token()->text) | 237 if (syms[i] == token()->text) |
| 238 return i; | 238 return i; |
| 239 } | 239 } |
| 240 } | 240 } |
| 241 | 241 |
| 242 error ("expected one of %1, got %2", syms, describeToken (token())); | 242 error ("expected one of %1, got %2", syms, DescribeToken (token())); |
| 243 return -1; | 243 return -1; |
| 244 } | 244 } |
| 245 | 245 |
| 246 // ============================================================================= | 246 // ============================================================================= |
| 247 // | 247 // |
| 248 void Lexer::tokenMustBe (Token tok) | 248 void Lexer::tokenMustBe (Token tok) |
| 249 { | 249 { |
| 250 if (tokenType() != tok) | 250 if (tokenType() != tok) |
| 251 error ("expected %1, got %2", describeTokenType (tok), | 251 error ("expected %1, got %2", DescribeTokenType (tok), |
| 252 describeToken (token())); | 252 DescribeToken (token())); |
| 253 } | 253 } |
| 254 | 254 |
| 255 // ============================================================================= | 255 // ============================================================================= |
| 256 // | 256 // |
| 257 String Lexer::describeTokenPrivate (Token tokType, Lexer::TokenInfo* tok) | 257 String Lexer::DescribeTokenPrivate (Token tokType, Lexer::TokenInfo* tok) |
| 258 { | 258 { |
| 259 if (tokType < LastNamedToken) | 259 if (tokType < LastNamedToken) |
| 260 return "\"" + LexerScanner::GetTokenString (tokType) + "\""; | 260 return "\"" + LexerScanner::GetTokenString (tokType) + "\""; |
| 261 | 261 |
| 262 switch (tokType) | 262 switch (tokType) |
| 299 return result; | 299 return result; |
| 300 } | 300 } |
| 301 | 301 |
| 302 // ============================================================================= | 302 // ============================================================================= |
| 303 // | 303 // |
| 304 Lexer* Lexer::getCurrentLexer() | 304 Lexer* Lexer::GetCurrentLexer() |
| 305 { | 305 { |
| 306 return gMainLexer; | 306 return MainLexer; |
| 307 } | 307 } |
| 308 | 308 |
| 309 // ============================================================================= | 309 // ============================================================================= |
| 310 // | 310 // |
| 311 String Lexer::peekNextString (int a) | 311 String Lexer::peekNextString (int a) |
| 337 // ============================================================================= | 337 // ============================================================================= |
| 338 // | 338 // |
| 339 void Lexer::mustGetSymbol (const String& a) | 339 void Lexer::mustGetSymbol (const String& a) |
| 340 { | 340 { |
| 341 mustGetNext (Token::Any); | 341 mustGetNext (Token::Any); |
| 342 | |
| 342 if (token()->text != a) | 343 if (token()->text != a) |
| 343 error ("expected \"%1\", got \"%2\"", a, token()->text); | 344 error ("expected \"%1\", got \"%2\"", a, token()->text); |
| 344 } | 345 } |
