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authorChristian <c@ethdev.com>2014-12-01 20:46:04 +0800
committerChristian <c@ethdev.com>2014-12-01 20:46:04 +0800
commitb685735b3ac267fbcef97cf89b68adba65cf9ff0 (patch)
tree3ca827d76550bf18fe1c27184d0c886dd7524143 /Scanner.cpp
parent3fc2708d657525162567b663a07cf8cb5b1c59aa (diff)
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dexon-solidity-b685735b3ac267fbcef97cf89b68adba65cf9ff0.tar.zst
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Cleanup of scanner.
Removed redundancy of keyword definitions and removed some unused token predicates.
Diffstat (limited to 'Scanner.cpp')
-rw-r--r--Scanner.cpp197
1 files changed, 12 insertions, 185 deletions
diff --git a/Scanner.cpp b/Scanner.cpp
index 4ffc2223..487d5c20 100644
--- a/Scanner.cpp
+++ b/Scanner.cpp
@@ -194,7 +194,6 @@ Token::Value Scanner::selectToken(char _next, Token::Value _then, Token::Value _
return _else;
}
-
bool Scanner::skipWhitespace()
{
int const startPosition = getSourcePos();
@@ -204,7 +203,6 @@ bool Scanner::skipWhitespace()
return getSourcePos() != startPosition;
}
-
Token::Value Scanner::skipSingleLineComment()
{
// The line terminator at the end of the line is not considered
@@ -215,7 +213,6 @@ Token::Value Scanner::skipSingleLineComment()
return Token::WHITESPACE;
}
-/// For the moment this function simply consumes a single line triple slash doc comment
Token::Value Scanner::scanDocumentationComment()
{
LiteralScope literal(this, LITERAL_TYPE_COMMENT);
@@ -545,14 +542,12 @@ Token::Value Scanner::scanString()
return Token::STRING_LITERAL;
}
-
void Scanner::scanDecimalDigits()
{
while (isDecimalDigit(m_char))
addLiteralCharAndAdvance();
}
-
Token::Value Scanner::scanNumber(char _charSeen)
{
enum { DECIMAL, HEX, BINARY } kind = DECIMAL;
@@ -623,186 +618,18 @@ Token::Value Scanner::scanNumber(char _charSeen)
// ----------------------------------------------------------------------------
// Keyword Matcher
-#define KEYWORDS(KEYWORD_GROUP, KEYWORD) \
- KEYWORD_GROUP('a') \
- KEYWORD("address", Token::ADDRESS) \
- KEYWORD_GROUP('b') \
- KEYWORD("break", Token::BREAK) \
- KEYWORD("bool", Token::BOOL) \
- KEYWORD_GROUP('c') \
- KEYWORD("case", Token::CASE) \
- KEYWORD("const", Token::CONST) \
- KEYWORD("continue", Token::CONTINUE) \
- KEYWORD("contract", Token::CONTRACT) \
- KEYWORD_GROUP('d') \
- KEYWORD("default", Token::DEFAULT) \
- KEYWORD("delete", Token::DELETE) \
- KEYWORD("do", Token::DO) \
- KEYWORD_GROUP('e') \
- KEYWORD("else", Token::ELSE) \
- KEYWORD("extends", Token::EXTENDS) \
- KEYWORD_GROUP('f') \
- KEYWORD("false", Token::FALSE_LITERAL) \
- KEYWORD("for", Token::FOR) \
- KEYWORD("function", Token::FUNCTION) \
- KEYWORD_GROUP('h') \
- KEYWORD("hash", Token::HASH) \
- KEYWORD("hash8", Token::HASH8) \
- KEYWORD("hash16", Token::HASH16) \
- KEYWORD("hash24", Token::HASH24) \
- KEYWORD("hash32", Token::HASH32) \
- KEYWORD("hash40", Token::HASH40) \
- KEYWORD("hash48", Token::HASH48) \
- KEYWORD("hash56", Token::HASH56) \
- KEYWORD("hash64", Token::HASH64) \
- KEYWORD("hash72", Token::HASH72) \
- KEYWORD("hash80", Token::HASH80) \
- KEYWORD("hash88", Token::HASH88) \
- KEYWORD("hash96", Token::HASH96) \
- KEYWORD("hash104", Token::HASH104) \
- KEYWORD("hash112", Token::HASH112) \
- KEYWORD("hash120", Token::HASH120) \
- KEYWORD("hash128", Token::HASH128) \
- KEYWORD("hash136", Token::HASH136) \
- KEYWORD("hash144", Token::HASH144) \
- KEYWORD("hash152", Token::HASH152) \
- KEYWORD("hash160", Token::HASH160) \
- KEYWORD("hash168", Token::HASH168) \
- KEYWORD("hash178", Token::HASH176) \
- KEYWORD("hash184", Token::HASH184) \
- KEYWORD("hash192", Token::HASH192) \
- KEYWORD("hash200", Token::HASH200) \
- KEYWORD("hash208", Token::HASH208) \
- KEYWORD("hash216", Token::HASH216) \
- KEYWORD("hash224", Token::HASH224) \
- KEYWORD("hash232", Token::HASH232) \
- KEYWORD("hash240", Token::HASH240) \
- KEYWORD("hash248", Token::HASH248) \
- KEYWORD("hash256", Token::HASH256) \
- KEYWORD_GROUP('i') \
- KEYWORD("if", Token::IF) \
- KEYWORD("in", Token::IN) \
- KEYWORD("int", Token::INT) \
- KEYWORD("int8", Token::INT8) \
- KEYWORD("int16", Token::INT16) \
- KEYWORD("int24", Token::INT24) \
- KEYWORD("int32", Token::INT32) \
- KEYWORD("int40", Token::INT40) \
- KEYWORD("int48", Token::INT48) \
- KEYWORD("int56", Token::INT56) \
- KEYWORD("int64", Token::INT64) \
- KEYWORD("int72", Token::INT72) \
- KEYWORD("int80", Token::INT80) \
- KEYWORD("int88", Token::INT88) \
- KEYWORD("int96", Token::INT96) \
- KEYWORD("int104", Token::INT104) \
- KEYWORD("int112", Token::INT112) \
- KEYWORD("int120", Token::INT120) \
- KEYWORD("int128", Token::INT128) \
- KEYWORD("int136", Token::INT136) \
- KEYWORD("int144", Token::INT144) \
- KEYWORD("int152", Token::INT152) \
- KEYWORD("int160", Token::INT160) \
- KEYWORD("int168", Token::INT168) \
- KEYWORD("int178", Token::INT176) \
- KEYWORD("int184", Token::INT184) \
- KEYWORD("int192", Token::INT192) \
- KEYWORD("int200", Token::INT200) \
- KEYWORD("int208", Token::INT208) \
- KEYWORD("int216", Token::INT216) \
- KEYWORD("int224", Token::INT224) \
- KEYWORD("int232", Token::INT232) \
- KEYWORD("int240", Token::INT240) \
- KEYWORD("int248", Token::INT248) \
- KEYWORD("int256", Token::INT256) \
- KEYWORD_GROUP('l') \
- KEYWORD_GROUP('m') \
- KEYWORD("mapping", Token::MAPPING) \
- KEYWORD_GROUP('n') \
- KEYWORD("new", Token::NEW) \
- KEYWORD("null", Token::NULL_LITERAL) \
- KEYWORD_GROUP('p') \
- KEYWORD("private", Token::PRIVATE) \
- KEYWORD("public", Token::PUBLIC) \
- KEYWORD_GROUP('r') \
- KEYWORD("real", Token::REAL) \
- KEYWORD("return", Token::RETURN) \
- KEYWORD("returns", Token::RETURNS) \
- KEYWORD_GROUP('s') \
- KEYWORD("string", Token::STRING_TYPE) \
- KEYWORD("struct", Token::STRUCT) \
- KEYWORD("switch", Token::SWITCH) \
- KEYWORD_GROUP('t') \
- KEYWORD("text", Token::TEXT) \
- KEYWORD("true", Token::TRUE_LITERAL) \
- KEYWORD_GROUP('u') \
- KEYWORD("uint", Token::UINT) \
- KEYWORD("uint8", Token::UINT8) \
- KEYWORD("uint16", Token::UINT16) \
- KEYWORD("uint24", Token::UINT24) \
- KEYWORD("uint32", Token::UINT32) \
- KEYWORD("uint40", Token::UINT40) \
- KEYWORD("uint48", Token::UINT48) \
- KEYWORD("uint56", Token::UINT56) \
- KEYWORD("uint64", Token::UINT64) \
- KEYWORD("uint72", Token::UINT72) \
- KEYWORD("uint80", Token::UINT80) \
- KEYWORD("uint88", Token::UINT88) \
- KEYWORD("uint96", Token::UINT96) \
- KEYWORD("uint104", Token::UINT104) \
- KEYWORD("uint112", Token::UINT112) \
- KEYWORD("uint120", Token::UINT120) \
- KEYWORD("uint128", Token::UINT128) \
- KEYWORD("uint136", Token::UINT136) \
- KEYWORD("uint144", Token::UINT144) \
- KEYWORD("uint152", Token::UINT152) \
- KEYWORD("uint160", Token::UINT160) \
- KEYWORD("uint168", Token::UINT168) \
- KEYWORD("uint178", Token::UINT176) \
- KEYWORD("uint184", Token::UINT184) \
- KEYWORD("uint192", Token::UINT192) \
- KEYWORD("uint200", Token::UINT200) \
- KEYWORD("uint208", Token::UINT208) \
- KEYWORD("uint216", Token::UINT216) \
- KEYWORD("uint224", Token::UINT224) \
- KEYWORD("uint232", Token::UINT232) \
- KEYWORD("uint240", Token::UINT240) \
- KEYWORD("uint248", Token::UINT248) \
- KEYWORD("uint256", Token::UINT256) \
- KEYWORD("ureal", Token::UREAL) \
- KEYWORD_GROUP('v') \
- KEYWORD("var", Token::VAR) \
- KEYWORD_GROUP('w') \
- KEYWORD("while", Token::WHILE) \
-
-
-static Token::Value KeywordOrIdentifierToken(string const& _input)
+
+static Token::Value keywordOrIdentifierToken(string const& _input)
{
- if (asserts(!_input.empty()))
- BOOST_THROW_EXCEPTION(InternalCompilerError());
- int const kMinLength = 2;
- int const kMaxLength = 10;
- if (_input.size() < kMinLength || _input.size() > kMaxLength)
- return Token::IDENTIFIER;
- switch (_input[0])
- {
- default:
-#define KEYWORD_GROUP_CASE(ch) \
- break; \
- case ch:
-#define KEYWORD(keyword, token) \
- { \
- /* 'keyword' is a char array, so sizeof(keyword) is */ \
- /* strlen(keyword) plus 1 for the NUL char. */ \
- int const keywordLength = sizeof(keyword) - 1; \
- BOOST_STATIC_ASSERT(keywordLength >= kMinLength); \
- BOOST_STATIC_ASSERT(keywordLength <= kMaxLength); \
- if (_input == keyword) \
- return token; \
- }
- KEYWORDS(KEYWORD_GROUP_CASE, KEYWORD)
- }
- return Token::IDENTIFIER;
+#define KEYWORD(name, string, precedence) {string, Token::name},
+#define TOKEN(name, string, precedence)
+ static const map<string, Token::Value> keywords{
+ TOKEN_LIST(TOKEN, KEYWORD)
+ };
+#undef KEYWORD
+#undef TOKEN
+ auto it = keywords.find(_input);
+ return it == keywords.end() ? Token::IDENTIFIER : it->second;
}
Token::Value Scanner::scanIdentifierOrKeyword()
@@ -815,7 +642,7 @@ Token::Value Scanner::scanIdentifierOrKeyword()
while (isIdentifierPart(m_char))
addLiteralCharAndAdvance();
literal.complete();
- return KeywordOrIdentifierToken(m_nextToken.literal);
+ return keywordOrIdentifierToken(m_nextToken.literal);
}
char CharStream::advanceAndGet(size_t _chars)