void compileParam(void) { // TODO: create and declare a parameter Object* obj = NULL; switch (lookAhead->tokenType) { case TK_IDENT: eat(TK_IDENT); obj = createParameterObject(currentToken->string, PARAM_VALUE, symtab->currentScope->owner); eat(SB_COLON); obj->paramAttrs->type = compileBasicType(); declareObject(obj); break; case KW_VAR: eat(KW_VAR); eat(TK_IDENT); obj = createParameterObject(currentToken->string, PARAM_REFERENCE, symtab->currentScope->owner); eat(SB_COLON); obj->paramAttrs->type = compileBasicType(); declareObject(obj); break; default: error(ERR_INVALID_PARAMETER, lookAhead->lineNo, lookAhead->colNo); break; } }
void initSymTab(void) { Object* obj; Object* param; symtab = (SymTab*) malloc(sizeof(SymTab)); symtab->globalObjectList = NULL; obj = createFunctionObject("READC"); obj->funcAttrs->returnType = makeCharType(); addObject(&(symtab->globalObjectList), obj); obj = createFunctionObject("READI"); obj->funcAttrs->returnType = makeIntType(); addObject(&(symtab->globalObjectList), obj); obj = createProcedureObject("WRITEI"); param = createParameterObject("i", PARAM_VALUE, obj); param->paramAttrs->type = makeIntType(); addObject(&(obj->procAttrs->paramList),param); addObject(&(symtab->globalObjectList), obj); obj = createProcedureObject("WRITEC"); param = createParameterObject("ch", PARAM_VALUE, obj); param->paramAttrs->type = makeCharType(); addObject(&(obj->procAttrs->paramList),param); addObject(&(symtab->globalObjectList), obj); obj = createProcedureObject("WRITELN"); addObject(&(symtab->globalObjectList), obj); intType = makeIntType(); charType = makeCharType(); }
void compileParam(void) { Object* param; Type* type; enum ParamKind paramKind; switch (lookAhead->tokenType) { case TK_IDENT: paramKind = PARAM_VALUE; break; case KW_VAR: eat(KW_VAR); paramKind = PARAM_REFERENCE; break; default: error(ERR_INVALID_PARAMETER, lookAhead->lineNo, lookAhead->colNo); break; } eat(TK_IDENT); checkFreshIdent(currentToken->string); param = createParameterObject(currentToken->string, paramKind, symtab->currentScope->owner); eat(SB_COLON); type = compileBasicType(); param->paramAttrs->type = type; declareObject(param); }
void initSymTab(void) { Object* param; symtab = (SymTab*) malloc(sizeof(SymTab)); symtab->globalObjectList = NULL; symtab->program = NULL; symtab->currentScope = NULL; readcFunction = createFunctionObject("READC"); declareObject(readcFunction); readcFunction->funcAttrs->returnType = makeCharType(); readiFunction = createFunctionObject("READI"); declareObject(readiFunction); readiFunction->funcAttrs->returnType = makeIntType(); writeiProcedure = createProcedureObject("WRITEI"); declareObject(writeiProcedure); enterBlock(writeiProcedure->procAttrs->scope); param = createParameterObject("i", PARAM_VALUE); param->paramAttrs->type = makeIntType(); declareObject(param); exitBlock(); writecProcedure = createProcedureObject("WRITEC"); declareObject(writecProcedure); enterBlock(writecProcedure->procAttrs->scope); param = createParameterObject("ch", PARAM_VALUE); param->paramAttrs->type = makeCharType(); declareObject(param); exitBlock(); writelnProcedure = createProcedureObject("WRITELN"); declareObject(writelnProcedure); intType = makeIntType(); charType = makeCharType(); }
void compileParam(void) { Object* param; Type* type; enum ParamKind paramKind = PARAM_VALUE; if (lookAhead->tokenType == KW_VAR) { paramKind = PARAM_REFERENCE; eat(KW_VAR); } eat(TK_IDENT); checkFreshIdent(currentToken->string); param = createParameterObject(currentToken->string, paramKind); eat(SB_COLON); type = compileBasicType(); param->paramAttrs->type = type; declareObject(param); }
int main() { Object* obj; initSymTab(); obj = createProgramObject("PRG"); enterBlock(obj->progAttrs->scope); obj = createConstantObject("c1"); obj->constAttrs->value = makeIntConstant(10); declareObject(obj); obj = createConstantObject("c2"); obj->constAttrs->value = makeCharConstant('a'); declareObject(obj); obj = createTypeObject("t1"); obj->typeAttrs->actualType = makeArrayType(10, makeIntType()); declareObject(obj); obj = createVariableObject("v1"); obj->varAttrs->type = makeIntType(); declareObject(obj); obj = createVariableObject("v2"); obj->varAttrs->type = makeArrayType(10, makeArrayType(10, makeIntType())); declareObject(obj); obj = createFunctionObject("f"); obj->funcAttrs->returnType = makeIntType(); declareObject(obj); enterBlock(obj->funcAttrs->scope); obj = createParameterObject("p1", PARAM_VALUE, symtab->currentScope->owner); obj->paramAttrs->type = makeIntType(); declareObject(obj); obj = createParameterObject("p2", PARAM_REFERENCE, symtab->currentScope->owner); obj->paramAttrs->type = makeCharType(); declareObject(obj); exitBlock(); obj = createProcedureObject("p"); declareObject(obj); enterBlock(obj->procAttrs->scope); obj = createParameterObject("v1", PARAM_VALUE, symtab->currentScope->owner); obj->paramAttrs->type = makeIntType(); declareObject(obj); obj = createConstantObject("c1"); obj->constAttrs->value = makeCharConstant('a'); declareObject(obj); obj = createConstantObject("c3"); obj->constAttrs->value = makeIntConstant(10); declareObject(obj); obj = createTypeObject("t1"); obj->typeAttrs->actualType = makeIntType(); declareObject(obj); obj = createTypeObject("t2"); obj->typeAttrs->actualType = makeArrayType(10, makeIntType()); declareObject(obj); obj = createVariableObject("v2"); obj->varAttrs->type = makeArrayType(10, makeIntType()); declareObject(obj); obj = createVariableObject("v3"); obj->varAttrs->type = makeCharType(); declareObject(obj); exitBlock(); exitBlock(); printObject(symtab->program, 0); cleanSymTab(); return 0; }