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Convert to new JavaFunction api

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This commit is contained in:
James Roseborough
2007-10-05 22:00:31 +00:00
parent ec9cff9050
commit 0353660299
1 changed files with 39 additions and 37 deletions
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76
src/main/java/lua/Builtin.java
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@@ -6,13 +6,10 @@ package lua;
import java.io.OutputStream; import java.io.OutputStream;
import java.io.PrintStream; import java.io.PrintStream;
import lua.value.LBoolean;
import lua.value.LFunction;
import lua.value.LNil;
import lua.value.LTable; import lua.value.LTable;
import lua.value.LValue; import lua.value.LValue;
final class Builtin extends LFunction { final class Builtin extends JavaFunction {
static void addBuiltins(LTable table) { static void addBuiltins(LTable table) {
for ( int i=0; i<NAMES.length; i++ ) for ( int i=0; i<NAMES.length; i++ )
@@ -48,50 +45,55 @@ final class Builtin extends LFunction {
} }
// perform a lua call // perform a lua call
public boolean luaStackCall(VM vm) { /**
* Invoke a builtin
*/
public int invoke(VM vm) {
switch ( id ) { switch ( id ) {
case PRINT: { case PRINT: {
int n = vm.getArgCount(); int n = vm.gettop();
for ( int i=0; i<n; i++ ) { for ( int i=1; i<=n; i++ ) {
if ( i > 0 ) if ( i > 1 )
stdout.print( "\t" ); stdout.print( "\t" );
stdout.print( vm.getArg(i).luaAsString() ); stdout.print( vm.topointer(i).luaAsString() );
}
stdout.println();
vm.setResult();
} }
break; stdout.println();
return 0;
}
case PAIRS: case PAIRS:
case IPAIRS: case IPAIRS: {
vm.setResult( vm.getArg(0).luaPairs(id==PAIRS) ); LValue v = vm.topointer(1);
break; LValue r = v.luaPairs(id==PAIRS);
vm.pushlvalue( r );
return 1;
}
case GETMETATABLE: case GETMETATABLE:
vm.setResult( vm.getArg(0).luaGetMetatable() ); return vm.getmetatable(1);
break;
case SETMETATABLE: case SETMETATABLE:
LValue t = vm.getArg(0); vm.setmetatable(1);
t.luaSetMetatable(vm.getArg(1)); return 1;
vm.setResult( t ); case TYPE: {
break; LValue v = vm.topointer(1);
case TYPE: vm.pushlstring( v.luaGetTypeName() );
vm.setResult( vm.getArg(0).luaGetTypeName() ); return 1;
break; }
case PCALL: { case PCALL: {
int n = vm.getArgCount(); int n = vm.gettop();
int s = vm.pcall( n-1, Lua.LUA_MULTRET, 0 ); int s = vm.pcall( n-1, Lua.LUA_MULTRET, 0 );
if ( s != 0 ) { if ( s == 0 ) { // success
LValue v = vm.topointer(-1); vm.pushboolean( true );
vm.setResult( LBoolean.FALSE ); vm.insert( 1 );
vm.push( v ); return vm.gettop();
} else { } else { // error, error message is on the stack
vm.setResult( LBoolean.TRUE ); vm.pushboolean( false );
} vm.insert( -2 );
return 2;
} }
break; }
default: default:
luaUnsupportedOperation(); luaUnsupportedOperation();
return 0;
} }
return false;
} }
static void redirectOutput( OutputStream newStdOut ) { static void redirectOutput( OutputStream newStdOut ) {