void Interpreter::ReadScript(const std::vector<ScriptToken *> &s, Script *script) {
+ std::map<string, int> labels;
int size(0);
for (vector<ScriptToken *>::const_iterator i(s.begin()), end(s.end()); i != end; ++i) {
- if ((*i)->GetType() != ScriptToken::COMMAND) {
+ if ((*i)->GetType() == ScriptToken::LABEL) {
+ if (labels.count((*i)->Label())) {
+ throw Error("duplicate label " + (*i)->Label());
+ } else {
+ labels[(*i)->Label()] = size;
+ }
+ } else if ((*i)->GetType() != ScriptToken::COMMAND) {
throw Error("unexpected script token");
}
++size;
if (i == end) {
throw Error("unexpected script end after rand");
}
+ } else if (cmd == "cmp") {
+ ++i;
+ if (i == end) {
+ throw Error("unexpected script end after cmp");
+ }
+ size += sizeof(int);
+ ++i;
+ if (i == end) {
+ throw Error("unexpected script end after cmp");
+ }
+ } else if (cmd == "jmp") {
+ size += sizeof(int);
+ ++i;
+ if (i == end) {
+ throw Error("unexpected script end after cmp");
+ }
+ } else if (cmd == "jeq") {
+ size += sizeof(int);
+ ++i;
+ if (i == end) {
+ throw Error("unexpected script end after cmp");
+ }
+ } else if (cmd == "jne") {
+ size += sizeof(int);
+ ++i;
+ if (i == end) {
+ throw Error("unexpected script end after cmp");
+ }
+ } else if (cmd == "jl") {
+ size += sizeof(int);
+ ++i;
+ if (i == end) {
+ throw Error("unexpected script end after cmp");
+ }
+ } else if (cmd == "jle") {
+ size += sizeof(int);
+ ++i;
+ if (i == end) {
+ throw Error("unexpected script end after cmp");
+ }
+ } else if (cmd == "jg") {
+ size += sizeof(int);
+ ++i;
+ if (i == end) {
+ throw Error("unexpected script end after cmp");
+ }
+ } else if (cmd == "jge") {
+ size += sizeof(int);
+ ++i;
+ if (i == end) {
+ throw Error("unexpected script end after cmp");
+ }
} else if (cmd == "sysc") {
} else {
unsigned char *text(reinterpret_cast<unsigned char *>(alloc.Alloc(size)));
int cursor(0);
for (vector<ScriptToken *>::const_iterator i(s.begin()), end(s.end()); i != end; ++i) {
+ if ((*i)->GetType() == ScriptToken::LABEL) {
+ continue;
+ }
if ((*i)->GetType() != ScriptToken::COMMAND) {
throw Error("unexpected script token");
}
} else {
throw Error("unexpected register " + reg);
}
+ } else if (cmd == "cmp") {
+ ++i;
+ const string ®((*i)->RegisterName());
+ ++i;
+ if (reg == "i0") {
+ if ((*i)->GetType() == ScriptToken::REGISTER && (*i)->RegisterName() == "i1") {
+ text[cursor] = Script::CODE_CMP_I0_I1;
+ ++cursor;
+ } else {
+ text[cursor] = Script::CODE_CMP_I0;
+ ++cursor;
+ ReadScriptInteger(**i, text + cursor);
+ cursor += sizeof(int);
+ }
+ } else if (reg == "i1") {
+ text[cursor] = Script::CODE_CMP_I1;
+ ++cursor;
+ ReadScriptInteger(**i, text + cursor);
+ cursor += sizeof(int);
+ } else {
+ throw Error("cannot use " + reg + " as lhs for comparison");
+ }
+ } else if (cmd == "jmp") {
+ text[cursor] = Script::CODE_JUMP;
+ ++cursor;
+ ++i;
+ if (!labels.count((*i)->Identifier())) {
+ throw Error("use of undefined label " + (*i)->Identifier());
+ }
+ *reinterpret_cast<int *>(text + cursor) = labels[(*i)->Identifier()];
+ cursor += sizeof(int);
+ } else if (cmd == "jeq") {
+ text[cursor] = Script::CODE_JUMP_EQUAL;
+ ++cursor;
+ ++i;
+ if (!labels.count((*i)->Identifier())) {
+ throw Error("use of undefined label " + (*i)->Identifier());
+ }
+ *reinterpret_cast<int *>(text + cursor) = labels[(*i)->Identifier()];
+ cursor += sizeof(int);
+ } else if (cmd == "jne") {
+ text[cursor] = Script::CODE_JUMP_NOT_EQUAL;
+ ++cursor;
+ ++i;
+ if (!labels.count((*i)->Identifier())) {
+ throw Error("use of undefined label " + (*i)->Identifier());
+ }
+ *reinterpret_cast<int *>(text + cursor) = labels[(*i)->Identifier()];
+ cursor += sizeof(int);
+ } else if (cmd == "jl") {
+ text[cursor] = Script::CODE_JUMP_LESS;
+ ++cursor;
+ ++i;
+ if (!labels.count((*i)->Identifier())) {
+ throw Error("use of undefined label " + (*i)->Identifier());
+ }
+ *reinterpret_cast<int *>(text + cursor) = labels[(*i)->Identifier()];
+ cursor += sizeof(int);
+ } else if (cmd == "jle") {
+ text[cursor] = Script::CODE_JUMP_LESS_EQUAL;
+ ++cursor;
+ ++i;
+ if (!labels.count((*i)->Identifier())) {
+ throw Error("use of undefined label " + (*i)->Identifier());
+ }
+ *reinterpret_cast<int *>(text + cursor) = labels[(*i)->Identifier()];
+ cursor += sizeof(int);
+ } else if (cmd == "jg") {
+ text[cursor] = Script::CODE_JUMP_GREATER;
+ ++cursor;
+ ++i;
+ if (!labels.count((*i)->Identifier())) {
+ throw Error("use of undefined label " + (*i)->Identifier());
+ }
+ *reinterpret_cast<int *>(text + cursor) = labels[(*i)->Identifier()];
+ cursor += sizeof(int);
+ } else if (cmd == "jge") {
+ text[cursor] = Script::CODE_JUMP_GREATER_EQUAL;
+ ++cursor;
+ ++i;
+ if (!labels.count((*i)->Identifier())) {
+ throw Error("use of undefined label " + (*i)->Identifier());
+ }
+ *reinterpret_cast<int *>(text + cursor) = labels[(*i)->Identifier()];
+ cursor += sizeof(int);
} else if (cmd == "sysc") {
text[cursor] = Script::CODE_SYSCALL;
++cursor;
if (t.GetType() != ScriptToken::IDENTIFIER) {
throw Error("expected identifier for address");
}
- if (source.IsDefined(t.GetIdentifier())) {
- const ParsedDefinition &def(GetDefinition(t.GetIdentifier()));
- void *addr(GetObject(def.type, t.GetIdentifier()));
+ if (source.IsDefined(t.Identifier())) {
+ const ParsedDefinition &def(GetDefinition(t.Identifier()));
+ void *addr(GetObject(def.type, t.Identifier()));
*reinterpret_cast<void **>(dest) = addr;
} else {
throw Error("postponing values in scripts not implemented");
void Interpreter::ReadScriptInteger(const ScriptToken &t, unsigned char *dest) {
if (t.GetType() == ScriptToken::IDENTIFIER) {
- if (source.IsDefined(t.GetIdentifier())) {
- void *num(GetObject(TypeDescription::GetTypeId("Number"), t.GetIdentifier()));
+ if (source.IsDefined(t.Identifier())) {
+ void *num(GetObject(TypeDescription::GetTypeId("Number"), t.Identifier()));
*reinterpret_cast<int *>(dest) = *reinterpret_cast<int *>(num);
} else {
throw Error("postponing values in scripts not implemented");
void Interpreter::ReadScriptVector(const ScriptToken &t, unsigned char *dest) {
if (t.GetType() == ScriptToken::IDENTIFIER) {
- if (source.IsDefined(t.GetIdentifier())) {
- void *vec(GetObject(TypeDescription::GetTypeId("Vector"), t.GetIdentifier()));
+ if (source.IsDefined(t.Identifier())) {
+ void *vec(GetObject(TypeDescription::GetTypeId("Vector"), t.Identifier()));
*reinterpret_cast<Vector<int> *>(dest) = *reinterpret_cast<Vector<int> *>(vec);
} else {
throw Error("postponing values in scripts not implemented");
void Interpreter::CreateTypeDescriptions() {
{
- TypeDescription &td(TypeDescription::CreateOrGet("Boolean"));
+ TypeDescription &td(TypeDescription::Create(BOOLEAN_ID, "Boolean"));
td.SetDescription("Logical value which can be either true or false.");
td.SetSize(sizeof(bool));
}
{
- TypeDescription &td(TypeDescription::CreateOrGet("Color"));
+ TypeDescription &td(TypeDescription::Create(COLOR_ID, "Color"));
td.SetDescription(
"A color in RGB format with an optional alpha channel.\n"
"Components range from 0 to 255.\n"
td.SetSize(sizeof(Color));
}
{
- TypeDescription &td(TypeDescription::CreateOrGet("Image"));
+ TypeDescription &td(TypeDescription::Create(IMAGE_ID, "Image"));
td.SetDescription("Path to a PNG file with image data.");
td.SetSize(sizeof(SDL_Surface));
}
{
- TypeDescription &td(TypeDescription::CreateOrGet("Number"));
+ TypeDescription &td(TypeDescription::Create(NUMBER_ID, "Number"));
td.SetDescription("A signed integer.");
td.SetSize(sizeof(int));
}
- {
- int stringId(TypeDescription::GetTypeId("String"));
- TypeDescription &td(TypeDescription::CreateOrGet("Path"));
+ {;
+ TypeDescription &td(TypeDescription::Create(PATH_ID, "Path"));
td.SetDescription("A path in the filesystem which is interpreted relative to the source file's location.");
td.SetSize(1);
- td.AddSupertype(stringId, 0);
+ td.AddSupertype(STRING_ID, 0);
}
{
- TypeDescription &td(TypeDescription::CreateOrGet("Script"));
+ TypeDescription &td(TypeDescription::Create(SCRIPT_ID, "Script"));
td.SetDescription("Collection of commands that define a behaviour.");
td.SetSize(sizeof(Script));
}
{
- TypeDescription &td(TypeDescription::CreateOrGet("String"));
+ TypeDescription &td(TypeDescription::Create(STRING_ID, "String"));
td.SetDescription("Some characters.");
td.SetSize(1);
}
{
- TypeDescription &td(TypeDescription::CreateOrGet("Vector"));
+ TypeDescription &td(TypeDescription::Create(VECTOR_ID, "Vector"));
td.SetDescription("A pair of numbers usually describing a 2D translation or offset.");
td.SetSize(sizeof(Vector<int>));
}