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Copy pathByteDecoder.h
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72 lines (46 loc) · 1.95 KB
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#pragma once
#include "Source.h"
class SourceConventionManager;
class ParserSession;
using SourceConventionManagerPtr = SourceConventionManager *;
using ParserSessionPtr = ParserSession *;
//
// How to manage advancing through SourceLocations
//
class SourceConventionManager {
public:
virtual SourceLocation newSourceLocation() = 0;
virtual void newline(ParserSessionPtr session, SourceLocation& loc) = 0;
virtual void windowsNewline(ParserSessionPtr session, SourceLocation& loc) = 0;
void increment(ParserSessionPtr session, SourceLocation& loc);
virtual void tab(ParserSessionPtr session, SourceLocation& loc) = 0;
virtual ~SourceConventionManager() {}
};
//
// Handle next (non-newline) SourceLocation by incrementing column.
// Handle next newline by incrementing line.
//
class LineColumnManager : public SourceConventionManager {
public:
LineColumnManager() {}
SourceLocation newSourceLocation() override;
void newline(ParserSessionPtr session, SourceLocation& loc) override;
void windowsNewline(ParserSessionPtr session, SourceLocation& loc) override;
void tab(ParserSessionPtr session, SourceLocation& loc) override;
};
//
// Handle next (non-newline) SourceLocation by incrementing index.
// Handle next newline by incrementing index.
//
class SourceCharacterIndexManager : public SourceConventionManager {
public:
SourceLocation newSourceLocation() override;
void newline(ParserSessionPtr session, SourceLocation& loc) override;
void windowsNewline(ParserSessionPtr session, SourceLocation& loc) override;
void tab(ParserSessionPtr session, SourceLocation& loc) override;
};
//
// Decode a sequence of UTF-8 encoded bytes into Source characters
//
SourceCharacter ByteDecoder_nextSourceCharacter(ParserSessionPtr session, NextPolicy policy);
SourceCharacter ByteDecoder_currentSourceCharacter(ParserSessionPtr session, NextPolicy policy);