-/*
- * Interpreter.cpp
- *
- * Created on: Aug 26, 2012
- * Author: holy
- */
-
#include "Interpreter.h"
#include "ParsedSource.h"
} else if ((*i)->GetType() != ScriptToken::COMMAND) {
throw Error("unexpected script token");
}
- ++size;
+ size += sizeof(Script::Code);
const string &cmd((*i)->CommandName());
if (cmd == "move") {
++i;
throw Error("unexpected script end after move");
}
const string ®((*i)->RegisterName());
- switch (reg[0]) {
- case 'a':
- size += sizeof(void *);
- break;
- case 'i':
- size += sizeof(int);
- break;
- case 'v':
- size += sizeof(Vector<int>);
- break;
- default:
- throw Error("unknown register " + reg);
+ if (reg.size() != 2) {
+ throw Error("invalid register name " + reg);
}
++i;
if (i == end) {
throw Error("unexpected script end after move");
}
+ if ((*i)->GetType() != ScriptToken::REGISTER) {
+ switch (reg[0]) {
+ case 'a':
+ size += sizeof(void *);
+ break;
+ case 'i':
+ size += sizeof(int);
+ break;
+ case 'v':
+ size += sizeof(Vector<int>);
+ break;
+ default:
+ throw Error("unknown register " + reg);
+ }
+ }
} else if (cmd == "add") {
++i;
if (i == end) {
throw Error("unexpected script end after add");
}
const string ®((*i)->RegisterName());
- switch (reg[0]) {
- case 'i':
- size += sizeof(int);
- break;
- case 'v':
- size += sizeof(Vector<int>);
- break;
- default:
- throw Error("expected register after add " + reg);
+ if (reg.size() != 2) {
+ throw Error("invalid register name " + reg);
}
++i;
if (i == end) {
throw Error("unexpected script end after add");
}
+ if ((*i)->GetType() != ScriptToken::REGISTER) {
+ switch (reg[0]) {
+ case 'i':
+ size += sizeof(int);
+ break;
+ case 'v':
+ size += sizeof(Vector<int>);
+ break;
+ default:
+ throw Error("expected register after add " + reg);
+ }
+ }
} else if (cmd == "mod") {
++i;
if (i == end) {
throw Error("unexpected script end after mod");
}
- size += sizeof(int);
++i;
if (i == end) {
throw Error("unexpected script end after mod");
}
+ if ((*i)->GetType() != ScriptToken::REGISTER) {
+ size += sizeof(int);
+ }
} else if (cmd == "rand") {
++i;
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");
+ }
+ if ((*i)->GetType() != ScriptToken::REGISTER) {
+ size += sizeof(int);
+ }
+ ++i;
+ if (i == end) {
+ throw Error("unexpected script end after cmp");
+ }
+ if ((*i)->GetType() != ScriptToken::REGISTER) {
+ size += sizeof(int);
+ }
+ } else if (cmd == "jmp") {
size += sizeof(int);
++i;
if (i == end) {
- throw Error("unexpected script end after rand");
+ 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") {
}
}
- unsigned char *text(reinterpret_cast<unsigned char *>(alloc.Alloc(size)));
+ char *text(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) {
}
const string &cmd((*i)->CommandName());
if (cmd == "move") {
+ Script::Code &code(CreateScriptCode(Script::COMMAND_MOVE, text + cursor));
+ cursor += sizeof(Script::Code);
+ code.numParams = 2;
++i;
const string ®((*i)->RegisterName());
+ switch (reg[0]) {
+ case 'a':
+ code.type = Script::TYPE_ADDRESS;
+ break;
+ case 'i':
+ code.type = Script::TYPE_INTEGER;
+ break;
+ case 'v':
+ code.type = Script::TYPE_VECTOR;
+ break;
+ default:
+ throw Error("invalid register " + reg);
+ }
+ int regnum(reg[1] - '0');
+ if (regnum < 0 || regnum > 6) {
+ throw Error("invalid register " + reg);
+ }
+ code.reg1 = regnum;
++i;
- if (reg == "a0") {
- text[cursor] = Script::CODE_MOVE_A0;
- ++cursor;
- ReadScriptAddress(**i, text + cursor);
- cursor += sizeof(void *);
- } else if (reg == "a1") {
- text[cursor] = Script::CODE_MOVE_A1;
- ++cursor;
- ReadScriptAddress(**i, text + cursor);
- cursor += sizeof(void *);
- } else if (reg == "i0") {
- text[cursor] = Script::CODE_MOVE_I0;
- ++cursor;
- ReadScriptInteger(**i, text + cursor);
- cursor += sizeof(int);
- } else if (reg == "i1") {
- text[cursor] = Script::CODE_MOVE_I1;
- ++cursor;
- ReadScriptInteger(**i, text + cursor);
- cursor += sizeof(int);
- } else if (reg == "v0") {
- text[cursor] = Script::CODE_MOVE_V0;
- ++cursor;
- ReadScriptVector(**i, text + cursor);
- cursor += sizeof(Vector<int>);
- } else if (reg == "v1") {
- text[cursor] = Script::CODE_MOVE_V1;
- ++cursor;
- ReadScriptVector(**i, text + cursor);
- cursor += sizeof(Vector<int>);
+
+ if ((*i)->GetType() == ScriptToken::REGISTER) {
+ string reg2((*i)->RegisterName());
+ if (reg[0] != reg2[0]) {
+ throw Error("mixed-type commands not allowed");
+ }
+ int reg2num(reg[1] - '0');
+ if (reg2num < 0 || reg2num > 6) {
+ throw Error("invalid register " + reg2);
+ }
+ code.reg2 = reg2num;
} else {
- throw Error("unknown register " + reg);
+ code.reg2 = 7;
+ switch (code.type) {
+ case Script::TYPE_ADDRESS:
+ ReadScriptAddress(**i, text + cursor);
+ cursor += sizeof(void *);
+ break;
+ case Script::TYPE_INTEGER:
+ ReadScriptInteger(**i, text + cursor);
+ cursor += sizeof(int);
+ break;
+ case Script::TYPE_VECTOR:
+ ReadScriptVector(**i, text + cursor);
+ cursor += sizeof(Vector<int>);
+ break;
+ }
}
} else if (cmd == "add") {
+ Script::Code &code(CreateScriptCode(Script::COMMAND_ADD, text + cursor));
+ cursor += sizeof(Script::Code);
+ code.numParams = 2;
++i;
const string ®((*i)->RegisterName());
+ switch (reg[0]) {
+ case 'i':
+ code.type = Script::TYPE_INTEGER;
+ break;
+ case 'v':
+ code.type = Script::TYPE_VECTOR;
+ break;
+ default:
+ throw Error("invalid register " + reg);
+ }
+ int regnum(reg[1] - '0');
+ if (regnum < 0 || regnum > 6) {
+ throw Error("invalid register " + reg);
+ }
+ code.reg1 = regnum;
++i;
- if (reg == "i0") {
- text[cursor] = Script::CODE_ADD_I0;
- ++cursor;
- ReadScriptInteger(**i, text + cursor);
- cursor += sizeof(int);
- } else if (reg == "i1") {
- text[cursor] = Script::CODE_ADD_I1;
- ++cursor;
- ReadScriptInteger(**i, text + cursor);
- cursor += sizeof(int);
- } else if (reg == "v0") {
- text[cursor] = Script::CODE_ADD_V0;
- ++cursor;
- ReadScriptVector(**i, text + cursor);
- cursor += sizeof(Vector<int>);
- } else if (reg == "v1") {
- text[cursor] = Script::CODE_ADD_V1;
- ++cursor;
- ReadScriptVector(**i, text + cursor);
- cursor += sizeof(Vector<int>);
+
+ if ((*i)->GetType() == ScriptToken::REGISTER) {
+ string reg2((*i)->RegisterName());
+ if (reg[0] != reg2[0]) {
+ throw Error("mixed-type commands not allowed");
+ }
+ int reg2num(reg[1] - '0');
+ if (reg2num < 0 || reg2num > 6) {
+ throw Error("invalid register name " + reg2);
+ }
+ code.reg2 = reg2num;
} else {
- throw Error("unexpected register " + reg);
+ code.reg2 = 7;
+ switch (code.type) {
+ case Script::TYPE_INTEGER:
+ ReadScriptInteger(**i, text + cursor);
+ cursor += sizeof(int);
+ break;
+ case Script::TYPE_VECTOR:
+ ReadScriptVector(**i, text + cursor);
+ cursor += sizeof(Vector<int>);
+ break;
+ }
}
} else if (cmd == "mod") {
+ Script::Code &code(CreateScriptCode(Script::COMMAND_MOD, text + cursor));
+ cursor += sizeof(Script::Code);
+ code.numParams = 2;
++i;
const string ®((*i)->RegisterName());
+ if (reg[0] != 'i') {
+ throw Error("invalid register " + reg);
+ }
+ code.type = Script::TYPE_INTEGER;
+ int regnum(reg[1] - '0');
+ if (regnum < 0 || regnum > 6) {
+ throw Error("invalid register " + reg);
+ }
+ code.reg1 = regnum;
++i;
- if (reg == "i0") {
- text[cursor] = Script::CODE_MOD_I0;
- ++cursor;
- ReadScriptInteger(**i, text + cursor);
- cursor += sizeof(int);
- } else if (reg == "i1") {
- text[cursor] = Script::CODE_MOD_I1;
- ++cursor;
+
+ if ((*i)->GetType() == ScriptToken::REGISTER) {
+ string reg2((*i)->RegisterName());
+ if (reg[0] != reg2[0]) {
+ throw Error("mixed-type commands not allowed");
+ }
+ int reg2num(reg[1] - '0');
+ if (reg2num < 0 || reg2num > 6) {
+ throw Error("invalid register name " + reg2);
+ }
+ code.reg2 = reg2num;
+ } else {
+ code.reg2 = 7;
ReadScriptInteger(**i, text + cursor);
cursor += sizeof(int);
- } else {
- throw Error("unexpected register " + reg);
}
} else if (cmd == "rand") {
+ Script::Code &code(CreateScriptCode(Script::COMMAND_RAND, text + cursor));
+ cursor += sizeof(Script::Code);
+ code.numParams = 1;
+ ++i;
+ const string ®((*i)->RegisterName());
+ if (reg[0] != 'i') {
+ throw Error("invalid register " + reg);
+ }
+ code.type = Script::TYPE_INTEGER;
+ int regnum(reg[1] - '0');
+ if (regnum < 0 || regnum > 6) {
+ throw Error("invalid register " + reg);
+ }
+ code.reg1 = regnum;
+ } else if (cmd == "cmp") {
+ Script::Code &code(CreateScriptCode(Script::COMMAND_CMP, text + cursor));
+ cursor += sizeof(Script::Code);
+ code.numParams = 2;
++i;
const string ®((*i)->RegisterName());
- if (reg == "i0") {
- text[cursor] = Script::CODE_RAND_I0;
- ++cursor;
- } else if (reg == "i1") {
- text[cursor] = Script::CODE_RAND_I1;
- ++cursor;
+ if (reg[0] != 'i') {
+ throw Error("invalid register " + reg);
+ }
+ code.type = Script::TYPE_INTEGER;
+ int regnum(reg[1] - '0');
+ if (regnum < 0 || regnum > 6) {
+ throw Error("invalid register " + reg);
+ }
+ code.reg1 = regnum;
+ ++i;
+
+ if ((*i)->GetType() == ScriptToken::REGISTER) {
+ string reg2((*i)->RegisterName());
+ if (reg[0] != reg2[0]) {
+ throw Error("mixed-type commands not allowed");
+ }
+ int reg2num(reg[1] - '0');
+ if (reg2num < 0 || reg2num > 6) {
+ throw Error("invalid register name " + reg2);
+ }
+ code.reg2 = reg2num;
} else {
- throw Error("unexpected register " + reg);
+ code.reg2 = 7;
+ ReadScriptInteger(**i, text + cursor);
+ cursor += sizeof(int);
+ }
+ } else if (cmd == "jmp") {
+ Script::Code &code(CreateScriptCode(Script::COMMAND_JMP, text + cursor));
+ cursor += sizeof(Script::Code);
+ code.numParams = 1;
+ ++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") {
+ Script::Code &code(CreateScriptCode(Script::COMMAND_JEQ, text + cursor));
+ cursor += sizeof(Script::Code);
+ code.numParams = 1;
+ ++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") {
+ Script::Code &code(CreateScriptCode(Script::COMMAND_JNE, text + cursor));
+ cursor += sizeof(Script::Code);
+ code.numParams = 1;
+ ++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") {
+ Script::Code &code(CreateScriptCode(Script::COMMAND_JL, text + cursor));
+ cursor += sizeof(Script::Code);
+ code.numParams = 1;
+ ++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") {
+ Script::Code &code(CreateScriptCode(Script::COMMAND_JLE, text + cursor));
+ cursor += sizeof(Script::Code);
+ code.numParams = 1;
+ ++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") {
+ Script::Code &code(CreateScriptCode(Script::COMMAND_JG, text + cursor));
+ cursor += sizeof(Script::Code);
+ code.numParams = 1;
+ ++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") {
+ Script::Code &code(CreateScriptCode(Script::COMMAND_JGE, text + cursor));
+ cursor += sizeof(Script::Code);
+ code.numParams = 1;
+ ++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;
+ Script::Code &code(CreateScriptCode(Script::COMMAND_SYSC, text + cursor));
+ cursor += sizeof(Script::Code);
+ code.numParams = 0;
} else {
throw Error("unknown command " + cmd);
}
return mem;
}
-void Interpreter::ReadScriptAddress(const ScriptToken &t, unsigned char *dest) {
+Script::Code &Interpreter::CreateScriptCode(Script::Command c, char *dest) {
+ Script::Code &code(*reinterpret_cast<Script::Code *>(dest));
+ code.command = c;
+ code.numParams = 0;
+ code.type = Script::TYPE_NONE;
+ code.reg1 = 7;
+ code.reg2 = 7;
+ return code;
+}
+
+void Interpreter::ReadScriptAddress(const ScriptToken &t, char *dest) {
if (t.GetType() != ScriptToken::IDENTIFIER) {
throw Error("expected identifier for address");
}
}
}
-void Interpreter::ReadScriptInteger(const ScriptToken &t, unsigned char *dest) {
+void Interpreter::ReadScriptInteger(const ScriptToken &t, char *dest) {
if (t.GetType() == ScriptToken::IDENTIFIER) {
if (source.IsDefined(t.Identifier())) {
void *num(GetObject(TypeDescription::GetTypeId("Number"), t.Identifier()));
}
}
-void Interpreter::ReadScriptVector(const ScriptToken &t, unsigned char *dest) {
+void Interpreter::ReadScriptVector(const ScriptToken &t, char *dest) {
if (t.GetType() == ScriptToken::IDENTIFIER) {
if (source.IsDefined(t.Identifier())) {
void *vec(GetObject(TypeDescription::GetTypeId("Vector"), t.Identifier()));
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>));
}
projects / l2e.git / blobdiff