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Parser - Call instruction

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This commit is contained in:
Emmanuel BENOîT 2017-11-06 19:00:02 +01:00
parent 9ee16f6989
commit 3f32dd7f6f
2 changed files with 58 additions and 0 deletions
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24
opast.cc
View file

@ -302,6 +302,7 @@ namespace {
struct T_ParserImpl_
{
enum class E_InstrType {
CALL ,
IF ,
PIPELINE ,
PROFILE ,
@ -316,6 +317,7 @@ struct T_ParserImpl_
temp.add( T_String::Pooled( name ) , it );
} };
add( "call" , E_InstrType::CALL );
add( "if" , E_InstrType::IF );
add( "pipeline" , E_InstrType::PIPELINE );
add( "profiling" , E_InstrType::PROFILE );
@ -412,6 +414,9 @@ struct T_ParserImpl_
// ---------------------------------------------------------------------
void parseCallInstruction(
T_InstrListNode& instructions ,
T_SRDList const& input ) noexcept;
void parseIfInstruction(
T_InstrListNode& instructions ,
T_SRDList const& input ) noexcept;
@ -569,6 +574,7 @@ void T_ParserImpl_::parseInstructions(
#define M_CASE_( NAME , FNAME ) case E_InstrType::NAME: parse##FNAME##Instruction( instructions , ilist ); break
switch ( *instrMap.get( iword ) ) {
M_CASE_( CALL , Call );
M_CASE_( IF , If );
M_CASE_( PIPELINE , Pipeline );
M_CASE_( PROFILE , Profile );
@ -597,6 +603,24 @@ P_InstrListNode T_ParserImpl_::parseBlock(
/*----------------------------------------------------------------------------*/
void T_ParserImpl_::parseCallInstruction(
T_InstrListNode& instructions ,
T_SRDList const& input ) noexcept
{
if ( input.size( ) == 1 || input[ 1 ].type( ) != E_SRDTokenType::WORD ) {
errors.addNew( "function identifier expected" ,
input[ input.size( ) == 1 ? 0 : 1 ].location( ) );
return;
}
auto& instr{ instructions.add< T_CallInstrNode >( input[ 1 ] ) };
for ( auto it = input.begin( ) + 2 ; it.valid( ) ; ++it ) {
instr.addArgument( parseExpression( instr , *it ) );
}
}
/*----------------------------------------------------------------------------*/
void T_ParserImpl_::parseIfInstruction(
T_InstrListNode& instructions ,
T_SRDList const& input ) noexcept

34
opast.hh
View file

@ -23,6 +23,7 @@ class A_Node
DECL_FRAME , // Frame block
DECL_FN , // Function
//
OP_CALL , // Function call
OP_COND , // Conditional instruction
OP_PIPELINE , // Shader pipeline declaration
OP_PROFILE , // Profiling block
@ -232,6 +233,39 @@ using P_ExpressionNode = T_OwnPtr< A_ExpressionNode >;
/*============================================================================*/
class T_CallInstrNode : public A_InstructionNode
{
private:
T_String id_;
T_SRDLocation idLocation_;
T_AutoArray< P_ExpressionNode , 8 > arguments_;
public:
T_CallInstrNode( T_InstrListNode& parent ,
T_SRDToken const& idToken ) noexcept
: A_InstructionNode( OP_CALL , parent ) ,
id_( idToken.stringValue( ) ) ,
idLocation_( idToken.location( ) )
{ }
void addArgument( P_ExpressionNode expr ) noexcept
{
if ( expr ) {
arguments_.add( std::move( expr ) );
}
}
T_String const& id( ) const noexcept
{ return id_; }
T_SRDLocation const& idLocation( ) const noexcept
{ return idLocation_; }
uint32_t arguments( ) const noexcept
{ return arguments_.size( ); }
A_ExpressionNode& argument( const uint32_t index ) const noexcept
{ return *arguments_[ index ]; }
};
// Conditional instruction
class T_CondInstrNode : public A_InstructionNode
{