thirdparty/scummvm
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MUTATIONOFJB: Continue implementation of if/else script commands.

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Ľubomír Remák 2018-02-25 04:14:32 +01:00 • committed by Eugene Sandulenko
parent f7d5a825a0
commit 3672ea5572
14 changed files with 330 additions and 16 deletions
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61
engines/mutationofjb/script.cpp
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@ -25,25 +25,37 @@
#include "common/hashmap.h"
#include "common/hash-str.h"
#include "common/stream.h"
#include "common/debug.h"
#include "mutationofjb/commands/command.h"
#include "mutationofjb/commands/ifcommand.h"
#include "mutationofjb/commands/endblockcommand.h"
namespace MutationOfJB {
static CommandParseFunc* getParseFuncs() {
static CommandParseFunc funcs[] = {
static CommandParser** getParsers() {
static CommandParser* parsers[] = {
new IfCommandParser,
new EndBlockCommandParser,
nullptr
};
return funcs;
return parsers;
}
ScriptParseContext::ScriptParseContext(Common::SeekableReadStream &stream) : _stream(stream) {}
ScriptParseContext::ScriptParseContext(Common::SeekableReadStream &stream) :
_stream(stream),
_currentCommand(nullptr),
_lastCommand(nullptr)
{}
bool ScriptParseContext::readLine(Common::String &line) {
do {
Common::String str = _stream.readLine();
if (str.empty() || str[0] != '.') {
if (str.empty())
continue;
if (str[0] != '.') {
line = str;
if (line[0] == '*') {
line.deleteChar(0);
@ -61,15 +73,52 @@ void ScriptParseContext::addConditionalCommand(ConditionalCommand *command, char
}
bool Script::loadFromStream(Common::SeekableReadStream &stream) {
destroy();
CommandParseFunc * const parseFuncs = getParseFuncs();
CommandParser **parsers = getParsers();
ScriptParseContext parseCtx(stream);
Common::String line;
Command *lastCmd = nullptr;
CommandParser *lastParser = nullptr;
while (parseCtx.readLine(line)) {
Command *currentCmd = nullptr;
CommandParser *currentParser = nullptr;
for (CommandParser **parser = parsers; *parser; ++parser) {
if ((*parser)->parse(line, parseCtx, currentCmd)) {
currentParser = *parser;
break;
}
}
if (lastParser) {
lastParser->transition(parseCtx, lastCmd, currentCmd);
}
if (currentCmd) {
_allCommands.push_back(currentCmd);
}
lastParser = currentParser;
}
Common::HashMap<Common::String, Command *> macros;
Common::HashMap<Common::String, Command *> labels;
return true;
}
void Script::destroy() {
for (Commands::iterator it = _allCommands.begin(); it != _allCommands.end(); ++it) {
delete *it;
}
_allCommands.clear();
}
Script::~Script() {
destroy();
}
}