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116 lines
3.0 KiB
C++
116 lines
3.0 KiB
C++
#include "declarationparser.hpp"
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#include <components/misc/strings/lower.hpp>
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#include "errorhandler.hpp"
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#include "locals.hpp"
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#include "scanner.hpp"
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#include "skipparser.hpp"
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Compiler::DeclarationParser::DeclarationParser(ErrorHandler& errorHandler, const Context& context, Locals& locals)
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: Parser(errorHandler, context)
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, mLocals(locals)
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, mState(State_Begin)
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, mType(0)
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{
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}
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bool Compiler::DeclarationParser::parseName(const std::string& name, const TokenLoc& loc, Scanner& scanner)
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{
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if (mState == State_Name)
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{
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std::string name2 = ::Misc::StringUtils::lowerCase(name);
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char type = mLocals.getType(name2);
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if (type != ' ')
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getErrorHandler().warning("Local variable re-declaration", loc);
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else
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mLocals.declare(mType, name2);
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mState = State_End;
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return true;
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}
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else if (mState == State_End)
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{
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getErrorHandler().warning("Extra text after local variable declaration", loc);
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SkipParser skip(getErrorHandler(), getContext());
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scanner.scan(skip);
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return false;
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}
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return Parser::parseName(name, loc, scanner);
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}
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bool Compiler::DeclarationParser::parseKeyword(int keyword, const TokenLoc& loc, Scanner& scanner)
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{
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if (mState == State_Begin)
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{
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switch (keyword)
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{
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case Scanner::K_short:
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mType = 's';
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break;
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case Scanner::K_long:
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mType = 'l';
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break;
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case Scanner::K_float:
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mType = 'f';
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break;
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default:
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mType = 0;
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}
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if (mType)
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{
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mState = State_Name;
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return true;
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}
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}
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else if (mState == State_Name)
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{
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// allow keywords to be used as local variable names. MW script compiler, you suck!
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return parseName(loc.mLiteral, loc, scanner);
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}
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else if (mState == State_End)
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{
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getErrorHandler().warning("Extra text after local variable declaration", loc);
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SkipParser skip(getErrorHandler(), getContext());
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scanner.scan(skip);
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return false;
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}
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return Parser::parseKeyword(keyword, loc, scanner);
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}
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bool Compiler::DeclarationParser::parseSpecial(int code, const TokenLoc& loc, Scanner& scanner)
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{
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if (mState == State_End)
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{
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if (code != Scanner::S_newline)
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{
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getErrorHandler().warning("Extra text after local variable declaration", loc);
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SkipParser skip(getErrorHandler(), getContext());
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scanner.scan(skip);
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}
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return false;
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}
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return Parser::parseSpecial(code, loc, scanner);
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}
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bool Compiler::DeclarationParser::parseInt(int value, const TokenLoc& loc, Scanner& scanner)
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{
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if (mState == State_Name)
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{
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// Allow integers to be used as variable names
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return parseName(loc.mLiteral, loc, scanner);
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}
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return Parser::parseInt(value, loc, scanner);
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}
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void Compiler::DeclarationParser::reset()
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{
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mState = State_Begin;
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}
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