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Front-end: Non-functional: Move return-value handling from .y to .cpp.
This is to make the real change needed in the next commit easier.
This commit is contained in:
John Kessenich
parent
1011971981
commit
b10feabc95
@ -1199,6 +1199,26 @@ TIntermTyped* TParseContext::handleFunctionCall(const TSourceLoc& loc, TFunction
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return result;
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}
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TIntermNode* TParseContext::handleReturnValue(const TSourceLoc& loc, TIntermTyped* value)
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{
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functionReturnsValue = true;
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if (currentFunctionType->getBasicType() == EbtVoid) {
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error(loc, "void function cannot return a value", "return", "");
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return intermediate.addBranch(EOpReturn, loc);
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} else if (*currentFunctionType != value->getType()) {
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TIntermTyped* converted = intermediate.addConversion(EOpReturn, *currentFunctionType, value);
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if (converted) {
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if (version < 420)
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warn(loc, "type conversion on return values was not explicitly allowed until version 420", "return", "");
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return intermediate.addBranch(EOpReturn, converted, loc);
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} else {
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error(loc, "type does not match, or is not convertible to, the function's return type", "return", "");
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return intermediate.addBranch(EOpReturn, value, loc);
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}
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} else
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return intermediate.addBranch(EOpReturn, value, loc);
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}
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// See if the operation is being done in an illegal location.
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void TParseContext::checkLocation(const TSourceLoc& loc, TOperator op)
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{
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@ -197,6 +197,7 @@ public:
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TFunction* handleFunctionDeclarator(const TSourceLoc&, TFunction& function, bool prototype);
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TIntermAggregate* handleFunctionDefinition(const TSourceLoc&, TFunction&);
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TIntermTyped* handleFunctionCall(const TSourceLoc&, TFunction*, TIntermNode*);
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TIntermNode* handleReturnValue(const TSourceLoc&, TIntermTyped*);
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void checkLocation(const TSourceLoc&, TOperator);
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TIntermTyped* handleLengthMethod(const TSourceLoc&, TFunction*, TIntermNode*);
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void addInputArgumentConversions(const TFunction&, TIntermNode*&) const;
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@ -2633,22 +2633,7 @@ jump_statement
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parseContext.postMainReturn = true;
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}
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| RETURN expression SEMICOLON {
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parseContext.functionReturnsValue = true;
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if (parseContext.currentFunctionType->getBasicType() == EbtVoid) {
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parseContext.error($1.loc, "void function cannot return a value", "return", "");
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$$ = parseContext.intermediate.addBranch(EOpReturn, $1.loc);
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} else if (*(parseContext.currentFunctionType) != $2->getType()) {
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TIntermTyped* converted = parseContext.intermediate.addConversion(EOpReturn, *parseContext.currentFunctionType, $2);
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if (converted) {
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if (parseContext.version < 420)
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parseContext.warn($1.loc, "type conversion on return values was not explicitly allowed until version 420", "return", "");
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$$ = parseContext.intermediate.addBranch(EOpReturn, converted, $1.loc);
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} else {
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parseContext.error($1.loc, "type does not match, or is not convertible to, the function's return type", "return", "");
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$$ = parseContext.intermediate.addBranch(EOpReturn, $2, $1.loc);
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}
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} else
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$$ = parseContext.intermediate.addBranch(EOpReturn, $2, $1.loc);
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$$ = parseContext.handleReturnValue($1.loc, $2);
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}
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| DISCARD SEMICOLON {
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parseContext.requireStage($1.loc, EShLangFragment, "discard");
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@ -827,8 +827,8 @@ static const yytype_uint16 yyrline[] =
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2399, 2399, 2413, 2416, 2424, 2432, 2443, 2444, 2448, 2455,
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2459, 2467, 2471, 2484, 2484, 2504, 2507, 2513, 2525, 2537,
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2537, 2552, 2552, 2568, 2568, 2589, 2592, 2598, 2601, 2607,
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2611, 2618, 2623, 2628, 2635, 2653, 2662, 2666, 2673, 2676,
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2682, 2682
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2611, 2618, 2623, 2628, 2635, 2638, 2647, 2651, 2658, 2661,
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2667, 2667
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};
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#endif
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@ -7360,80 +7360,65 @@ yyreduce:
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case 414:
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#line 2635 "MachineIndependent/glslang.y" /* yacc.c:1646 */
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{
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parseContext.functionReturnsValue = true;
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if (parseContext.currentFunctionType->getBasicType() == EbtVoid) {
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parseContext.error((yyvsp[-2].lex).loc, "void function cannot return a value", "return", "");
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(yyval.interm.intermNode) = parseContext.intermediate.addBranch(EOpReturn, (yyvsp[-2].lex).loc);
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} else if (*(parseContext.currentFunctionType) != (yyvsp[-1].interm.intermTypedNode)->getType()) {
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TIntermTyped* converted = parseContext.intermediate.addConversion(EOpReturn, *parseContext.currentFunctionType, (yyvsp[-1].interm.intermTypedNode));
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if (converted) {
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if (parseContext.version < 420)
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parseContext.warn((yyvsp[-2].lex).loc, "type conversion on return values was not explicitly allowed until version 420", "return", "");
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(yyval.interm.intermNode) = parseContext.intermediate.addBranch(EOpReturn, converted, (yyvsp[-2].lex).loc);
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} else {
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parseContext.error((yyvsp[-2].lex).loc, "type does not match, or is not convertible to, the function's return type", "return", "");
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(yyval.interm.intermNode) = parseContext.intermediate.addBranch(EOpReturn, (yyvsp[-1].interm.intermTypedNode), (yyvsp[-2].lex).loc);
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}
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} else
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(yyval.interm.intermNode) = parseContext.intermediate.addBranch(EOpReturn, (yyvsp[-1].interm.intermTypedNode), (yyvsp[-2].lex).loc);
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(yyval.interm.intermNode) = parseContext.handleReturnValue((yyvsp[-2].lex).loc, (yyvsp[-1].interm.intermTypedNode));
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}
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#line 7381 "MachineIndependent/glslang_tab.cpp" /* yacc.c:1646 */
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#line 7366 "MachineIndependent/glslang_tab.cpp" /* yacc.c:1646 */
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break;
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case 415:
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#line 2653 "MachineIndependent/glslang.y" /* yacc.c:1646 */
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#line 2638 "MachineIndependent/glslang.y" /* yacc.c:1646 */
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{
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parseContext.requireStage((yyvsp[-1].lex).loc, EShLangFragment, "discard");
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(yyval.interm.intermNode) = parseContext.intermediate.addBranch(EOpKill, (yyvsp[-1].lex).loc);
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}
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#line 7390 "MachineIndependent/glslang_tab.cpp" /* yacc.c:1646 */
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#line 7375 "MachineIndependent/glslang_tab.cpp" /* yacc.c:1646 */
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break;
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case 416:
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#line 2662 "MachineIndependent/glslang.y" /* yacc.c:1646 */
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#line 2647 "MachineIndependent/glslang.y" /* yacc.c:1646 */
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{
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(yyval.interm.intermNode) = (yyvsp[0].interm.intermNode);
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parseContext.intermediate.setTreeRoot((yyval.interm.intermNode));
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}
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#line 7399 "MachineIndependent/glslang_tab.cpp" /* yacc.c:1646 */
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#line 7384 "MachineIndependent/glslang_tab.cpp" /* yacc.c:1646 */
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break;
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case 417:
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#line 2666 "MachineIndependent/glslang.y" /* yacc.c:1646 */
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#line 2651 "MachineIndependent/glslang.y" /* yacc.c:1646 */
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{
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(yyval.interm.intermNode) = parseContext.intermediate.growAggregate((yyvsp[-1].interm.intermNode), (yyvsp[0].interm.intermNode));
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parseContext.intermediate.setTreeRoot((yyval.interm.intermNode));
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}
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#line 7408 "MachineIndependent/glslang_tab.cpp" /* yacc.c:1646 */
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#line 7393 "MachineIndependent/glslang_tab.cpp" /* yacc.c:1646 */
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break;
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case 418:
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#line 2673 "MachineIndependent/glslang.y" /* yacc.c:1646 */
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#line 2658 "MachineIndependent/glslang.y" /* yacc.c:1646 */
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{
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(yyval.interm.intermNode) = (yyvsp[0].interm.intermNode);
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}
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#line 7416 "MachineIndependent/glslang_tab.cpp" /* yacc.c:1646 */
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#line 7401 "MachineIndependent/glslang_tab.cpp" /* yacc.c:1646 */
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break;
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case 419:
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#line 2676 "MachineIndependent/glslang.y" /* yacc.c:1646 */
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#line 2661 "MachineIndependent/glslang.y" /* yacc.c:1646 */
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{
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(yyval.interm.intermNode) = (yyvsp[0].interm.intermNode);
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}
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#line 7424 "MachineIndependent/glslang_tab.cpp" /* yacc.c:1646 */
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#line 7409 "MachineIndependent/glslang_tab.cpp" /* yacc.c:1646 */
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break;
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case 420:
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#line 2682 "MachineIndependent/glslang.y" /* yacc.c:1646 */
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#line 2667 "MachineIndependent/glslang.y" /* yacc.c:1646 */
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{
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(yyvsp[0].interm).function = parseContext.handleFunctionDeclarator((yyvsp[0].interm).loc, *(yyvsp[0].interm).function, false /* not prototype */);
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(yyvsp[0].interm).intermNode = parseContext.handleFunctionDefinition((yyvsp[0].interm).loc, *(yyvsp[0].interm).function);
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}
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#line 7433 "MachineIndependent/glslang_tab.cpp" /* yacc.c:1646 */
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#line 7418 "MachineIndependent/glslang_tab.cpp" /* yacc.c:1646 */
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break;
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case 421:
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#line 2686 "MachineIndependent/glslang.y" /* yacc.c:1646 */
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#line 2671 "MachineIndependent/glslang.y" /* yacc.c:1646 */
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{
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// May be best done as post process phase on intermediate code
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if (parseContext.currentFunctionType->getBasicType() != EbtVoid && ! parseContext.functionReturnsValue)
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@ -7449,11 +7434,11 @@ yyreduce:
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(yyval.interm.intermNode)->getAsAggregate()->setDebug(parseContext.contextPragma.debug);
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(yyval.interm.intermNode)->getAsAggregate()->addToPragmaTable(parseContext.contextPragma.pragmaTable);
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}
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#line 7453 "MachineIndependent/glslang_tab.cpp" /* yacc.c:1646 */
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#line 7438 "MachineIndependent/glslang_tab.cpp" /* yacc.c:1646 */
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break;
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#line 7457 "MachineIndependent/glslang_tab.cpp" /* yacc.c:1646 */
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#line 7442 "MachineIndependent/glslang_tab.cpp" /* yacc.c:1646 */
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default: break;
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}
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/* User semantic actions sometimes alter yychar, and that requires
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@ -7681,5 +7666,5 @@ yyreturn:
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#endif
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return yyresult;
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}
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#line 2703 "MachineIndependent/glslang.y" /* yacc.c:1906 */
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#line 2688 "MachineIndependent/glslang.y" /* yacc.c:1906 */
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