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/* |
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* Copyright (c) 2014 Christian Schoenebeck and Andreas Persson |
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* |
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* http://www.linuxsampler.org |
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* |
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* This file is part of LinuxSampler and released under the same terms. |
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* See README file for details. |
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*/ |
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|
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%{ |
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#define YYERROR_VERBOSE 1 |
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#include "parser_shared.h" |
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#include <string> |
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#include <map> |
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using namespace LinuxSampler; |
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|
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void InstrScript_error(YYLTYPE* locp, LinuxSampler::ParserContext* context, const char* err); |
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void InstrScript_warning(YYLTYPE* locp, LinuxSampler::ParserContext* context, const char* txt); |
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int InstrScript_lex(YYSTYPE* lvalp, YYLTYPE* llocp, void* scanner); |
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#define scanner context->scanner |
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#define PARSE_ERR(txt) yyerror(&yylloc, context, txt) |
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#define PARSE_WRN(txt) InstrScript_warning(&yylloc, context, txt) |
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%} |
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|
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// generate reentrant safe parser |
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%pure-parser |
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%parse-param { LinuxSampler::ParserContext* context } |
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%lex-param { void* scanner } |
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// avoid symbol collision with other (i.e. future) auto generated (f)lex scanners |
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%name-prefix "InstrScript_" |
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%locations |
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%defines |
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%error-verbose |
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|
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%token <iValue> INTEGER |
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%token <sValue> STRING |
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%token <sValue> IDENTIFIER |
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%token <sValue> VARIABLE |
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%token ON END INIT NOTE DECLARE ASSIGNMENT WHILE IF OR RELEASE AND ELSE |
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%token CONTROLLER SELECT CASE TO NOT CONST_ POLYPHONIC MOD |
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%token LE GE |
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|
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%type <nEventHandlers> script eventhandlers |
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%type <nEventHandler> eventhandler |
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%type <nStatements> statements |
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%type <nStatement> statement assignment |
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%type <nFunctionCall> functioncall |
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%type <nArgs> args |
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%type <nExpression> arg expr or_expr and_expr rel_expr add_expr mul_expr unary_expr concat_expr |
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%type <nCaseBranch> caseclause |
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%type <nCaseBranches> caseclauses |
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|
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%start script |
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|
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%% |
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|
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script: |
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eventhandlers { |
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$$ = context->handlers = $1; |
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} |
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|
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eventhandlers: |
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eventhandler { |
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$$ = new EventHandlers(); |
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$$->add($1); |
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} |
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| eventhandlers eventhandler { |
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$$ = $1; |
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$$->add($2); |
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} |
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|
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eventhandler: |
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ON NOTE statements END ON { |
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if (context->onNote) |
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PARSE_ERR("Redeclaration of 'note' event handler."); |
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context->onNote = new OnNote($3); |
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$$ = context->onNote; |
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} |
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| ON INIT statements END ON { |
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if (context->onInit) |
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PARSE_ERR("Redeclaration of 'init' event handler."); |
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context->onInit = new OnInit($3); |
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$$ = context->onInit; |
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} |
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| ON RELEASE statements END ON { |
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if (context->onRelease) |
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PARSE_ERR("Redeclaration of 'release' event handler."); |
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context->onRelease = new OnRelease($3); |
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$$ = context->onRelease; |
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} |
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| ON CONTROLLER statements END ON { |
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if (context->onController) |
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PARSE_ERR("Redeclaration of 'controller' event handler."); |
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context->onController = new OnController($3); |
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$$ = context->onController; |
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} |
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|
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statements: |
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statement { |
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$$ = new Statements(); |
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if ($1) { |
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if (!isNoOperation($1)) $$->add($1); // filter out NoOperation statements |
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} else |
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PARSE_WRN("Not a statement."); |
105 |
} |
106 |
| statements statement { |
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$$ = $1; |
108 |
if ($2) { |
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if (!isNoOperation($2)) $$->add($2); // filter out NoOperation statements |
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} else |
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PARSE_WRN("Not a statement."); |
112 |
} |
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|
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statement: |
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functioncall { |
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$$ = $1; |
117 |
} |
118 |
| DECLARE VARIABLE { |
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const char* name = $2; |
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//printf("declared var '%s'\n", name); |
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if (context->variableByName(name)) |
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PARSE_ERR((String("Redeclaration of variable '") + name + "'.").c_str()); |
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if (name[0] == '@') { |
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context->vartable[name] = new StringVariable(context); |
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$$ = new NoOperation; |
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} else { |
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context->vartable[name] = new IntVariable(context); |
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$$ = new NoOperation; |
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} |
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} |
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| DECLARE POLYPHONIC VARIABLE { |
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const char* name = $3; |
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//printf("declared polyphonic var '%s'\n", name); |
134 |
if (context->variableByName(name)) |
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PARSE_ERR((String("Redeclaration of variable '") + name + "'.").c_str()); |
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if (name[0] != '$') { |
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PARSE_ERR("Polyphonic variables may only be declared as integers."); |
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$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
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} else { |
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context->vartable[name] = new PolyphonicIntVariable(context); |
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$$ = new NoOperation; |
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} |
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} |
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| DECLARE VARIABLE ASSIGNMENT expr { |
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const char* name = $2; |
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//printf("declared assign var '%s'\n", name); |
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if (context->variableByName(name)) |
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PARSE_ERR((String("Redeclaration of variable '") + name + "'.").c_str()); |
149 |
if ($4->exprType() == STRING_EXPR) { |
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if (name[0] == '$') |
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PARSE_WRN((String("Variable '") + name + "' declared as integer, string expression assigned though.").c_str()); |
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StringExprRef expr = $4; |
153 |
if (expr->isConstExpr()) { |
154 |
const String s = expr->evalStr(); |
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StringVariableRef var = new StringVariable(context); |
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context->vartable[name] = var; |
157 |
$$ = new Assignment(var, new StringLiteral(s)); |
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} else { |
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StringVariableRef var = new StringVariable(context); |
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context->vartable[name] = var; |
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$$ = new Assignment(var, expr); |
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} |
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} else { |
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if (name[0] == '@') |
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PARSE_WRN((String("Variable '") + name + "' declared as string, integer expression assigned though.").c_str()); |
166 |
IntExprRef expr = $4; |
167 |
if (expr->isConstExpr()) { |
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const int i = expr->evalInt(); |
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IntVariableRef var = new IntVariable(context); |
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context->vartable[name] = var; |
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$$ = new Assignment(var, new IntLiteral(i)); |
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} else { |
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IntVariableRef var = new IntVariable(context); |
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context->vartable[name] = var; |
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$$ = new Assignment(var, expr); |
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} |
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} |
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} |
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| DECLARE VARIABLE '[' expr ']' { |
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//printf("declare array without args\n"); |
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const char* name = $2; |
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if (!$4->isConstExpr()) { |
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PARSE_ERR((String("Array variable '") + name + "' must be declared with constant array size.").c_str()); |
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$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
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} else if ($4->exprType() != INT_EXPR) { |
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PARSE_ERR((String("Size of array variable '") + name + "' declared with non integer expression.").c_str()); |
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$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
188 |
} else if (context->variableByName(name)) { |
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PARSE_ERR((String("Redeclaration of variable '") + name + "'.").c_str()); |
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$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
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} else { |
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IntExprRef expr = $4; |
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int size = expr->evalInt(); |
194 |
if (size <= 0) { |
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PARSE_ERR((String("Array variable '") + name + "' declared with array size " + ToString(size) + ".").c_str()); |
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$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
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} else { |
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context->vartable[name] = new IntArrayVariable(context, size); |
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$$ = new NoOperation; |
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} |
201 |
} |
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} |
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| DECLARE VARIABLE '[' expr ']' ASSIGNMENT '(' args ')' { |
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const char* name = $2; |
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if (!$4->isConstExpr()) { |
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PARSE_ERR((String("Array variable '") + name + "' must be declared with constant array size.").c_str()); |
207 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
208 |
} else if ($4->exprType() != INT_EXPR) { |
209 |
PARSE_ERR((String("Size of array variable '") + name + "' declared with non integer expression.").c_str()); |
210 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
211 |
} else if (context->variableByName(name)) { |
212 |
PARSE_ERR((String("Redeclaration of variable '") + name + "'.").c_str()); |
213 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
214 |
} else { |
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IntExprRef sizeExpr = $4; |
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ArgsRef args = $8; |
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int size = sizeExpr->evalInt(); |
218 |
if (size <= 0) { |
219 |
PARSE_ERR((String("Array variable '") + name + "' must be declared with positive array size.").c_str()); |
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$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
221 |
} else if (args->argsCount() > size) { |
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PARSE_ERR((String("Variable '") + name + |
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"' was declared with size " + ToString(size) + |
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" but " + ToString(args->argsCount()) + |
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" values were assigned." ).c_str()); |
226 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
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} else { |
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bool argsOK = true; |
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for (int i = 0; i < args->argsCount(); ++i) { |
230 |
if (args->arg(i)->exprType() != INT_EXPR) { |
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PARSE_ERR( |
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(String("Array variable '") + name + |
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"' declared with invalid assignment values. Assigned element " + |
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ToString(i+1) + " is not an integer expression.").c_str() |
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); |
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argsOK = false; |
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break; |
238 |
} |
239 |
} |
240 |
if (argsOK) |
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$$ = context->vartable[name] = new IntArrayVariable(context, size, args); |
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else |
243 |
$$ = new FunctionCall("nothing", new Args, NULL); // whatever |
244 |
} |
245 |
} |
246 |
} |
247 |
| DECLARE CONST_ VARIABLE ASSIGNMENT expr { |
248 |
const char* name = $3; |
249 |
if ($5->exprType() == STRING_EXPR) { |
250 |
if (name[0] == '$') |
251 |
PARSE_WRN("Variable declared as integer, string expression assigned though."); |
252 |
String s; |
253 |
StringExprRef expr = $5; |
254 |
if (expr->isConstExpr()) |
255 |
s = expr->evalStr(); |
256 |
else |
257 |
PARSE_ERR((String("Assignment to const string variable '") + name + "' requires const expression.").c_str()); |
258 |
ConstStringVariableRef var = new ConstStringVariable(context, s); |
259 |
context->vartable[name] = var; |
260 |
//$$ = new Assignment(var, new StringLiteral(s)); |
261 |
$$ = new NoOperation(); |
262 |
} else { |
263 |
if (name[0] == '@') |
264 |
PARSE_WRN("Variable declared as string, integer expression assigned though."); |
265 |
int i = 0; |
266 |
IntExprRef expr = $5; |
267 |
if (expr->isConstExpr()) |
268 |
i = expr->evalInt(); |
269 |
else |
270 |
PARSE_ERR((String("Assignment to const integer variable '") + name + "' requires const expression.").c_str()); |
271 |
ConstIntVariableRef var = new ConstIntVariable(i); |
272 |
context->vartable[name] = var; |
273 |
//$$ = new Assignment(var, new IntLiteral(i)); |
274 |
$$ = new NoOperation(); |
275 |
} |
276 |
} |
277 |
| assignment { |
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$$ = $1; |
279 |
} |
280 |
| WHILE '(' expr ')' statements END WHILE { |
281 |
if ($3->exprType() == INT_EXPR) { |
282 |
$$ = new While($3, $5); |
283 |
} else { |
284 |
PARSE_ERR("Condition for 'while' loops must be integer expression."); |
285 |
$$ = new While(new IntLiteral(0), $5); |
286 |
} |
287 |
} |
288 |
| IF '(' expr ')' statements ELSE statements END IF { |
289 |
$$ = new If($3, $5, $7); |
290 |
} |
291 |
| IF '(' expr ')' statements END IF { |
292 |
$$ = new If($3, $5); |
293 |
} |
294 |
| SELECT expr caseclauses END SELECT { |
295 |
if ($2->exprType() == INT_EXPR) { |
296 |
$$ = new SelectCase($2, $3); |
297 |
} else { |
298 |
PARSE_ERR("Statement 'select' can only by applied to integer expressions."); |
299 |
$$ = new SelectCase(new IntLiteral(0), $3); |
300 |
} |
301 |
} |
302 |
|
303 |
caseclauses: |
304 |
caseclause { |
305 |
$$ = CaseBranches(); |
306 |
$$.push_back($1); |
307 |
} |
308 |
| caseclauses caseclause { |
309 |
$$ = $1; |
310 |
$$.push_back($2); |
311 |
} |
312 |
|
313 |
caseclause: |
314 |
CASE INTEGER statements { |
315 |
$$ = CaseBranch(); |
316 |
$$.from = new IntLiteral($2); |
317 |
$$.statements = $3; |
318 |
} |
319 |
| CASE INTEGER TO INTEGER statements { |
320 |
$$ = CaseBranch(); |
321 |
$$.from = new IntLiteral($2); |
322 |
$$.to = new IntLiteral($4); |
323 |
$$.statements = $5; |
324 |
} |
325 |
|
326 |
functioncall: |
327 |
IDENTIFIER '(' args ')' { |
328 |
const char* name = $1; |
329 |
//printf("function call of '%s' with args\n", name); |
330 |
ArgsRef args = $3; |
331 |
VMFunction* fn = context->functionProvider->functionByName(name); |
332 |
if (!fn) { |
333 |
PARSE_ERR((String("No built-in function with name '") + name + "'.").c_str()); |
334 |
$$ = new FunctionCall(name, args, NULL); |
335 |
} else if (args->argsCount() < fn->minRequiredArgs()) { |
336 |
PARSE_ERR((String("Built-in function '") + name + "' requires at least " + ToString(fn->minRequiredArgs()) + " arguments.").c_str()); |
337 |
$$ = new FunctionCall(name, args, NULL); |
338 |
} else if (args->argsCount() > fn->maxAllowedArgs()) { |
339 |
PARSE_ERR((String("Built-in function '") + name + "' accepts max. " + ToString(fn->maxAllowedArgs()) + " arguments.").c_str()); |
340 |
$$ = new FunctionCall(name, args, NULL); |
341 |
} else { |
342 |
bool argsOK = true; |
343 |
for (int i = 0; i < args->argsCount(); ++i) { |
344 |
if (args->arg(i)->exprType() != fn->argType(i) && !fn->acceptsArgType(i, args->arg(i)->exprType())) { |
345 |
PARSE_ERR((String("Argument ") + ToString(i+1) + " of built-in function '" + name + "' expects " + typeStr(fn->argType(i)) + " type, but type " + typeStr(args->arg(i)->exprType()) + " was given instead.").c_str()); |
346 |
argsOK = false; |
347 |
break; |
348 |
} |
349 |
} |
350 |
$$ = new FunctionCall(name, args, argsOK ? fn : NULL); |
351 |
} |
352 |
} |
353 |
| IDENTIFIER '(' ')' { |
354 |
const char* name = $1; |
355 |
//printf("function call of '%s' (with empty args)\n", name); |
356 |
ArgsRef args = new Args; |
357 |
VMFunction* fn = context->functionProvider->functionByName(name); |
358 |
if (!fn) { |
359 |
PARSE_ERR((String("No built-in function with name '") + name + "'.").c_str()); |
360 |
$$ = new FunctionCall(name, args, NULL); |
361 |
} else if (fn->minRequiredArgs() > 0) { |
362 |
PARSE_ERR((String("Built-in function '") + name + "' requires at least " + ToString(fn->minRequiredArgs()) + " arguments.").c_str()); |
363 |
$$ = new FunctionCall(name, args, NULL); |
364 |
} else { |
365 |
$$ = new FunctionCall(name, args, fn); |
366 |
} |
367 |
} |
368 |
| IDENTIFIER { |
369 |
const char* name = $1; |
370 |
//printf("function call of '%s' (without args)\n", name); |
371 |
ArgsRef args = new Args; |
372 |
VMFunction* fn = context->functionProvider->functionByName(name); |
373 |
if (!fn) { |
374 |
PARSE_ERR((String("No built-in function with name '") + name + "'.").c_str()); |
375 |
$$ = new FunctionCall(name, args, NULL); |
376 |
} else if (fn->minRequiredArgs() > 0) { |
377 |
PARSE_ERR((String("Built-in function '") + name + "' requires at least " + ToString(fn->minRequiredArgs()) + " arguments.").c_str()); |
378 |
$$ = new FunctionCall(name, args, NULL); |
379 |
} else { |
380 |
$$ = new FunctionCall(name, args, fn); |
381 |
} |
382 |
} |
383 |
|
384 |
args: |
385 |
arg { |
386 |
$$ = new Args(); |
387 |
$$->add($1); |
388 |
} |
389 |
| args ',' arg { |
390 |
$$ = $1; |
391 |
$$->add($3); |
392 |
} |
393 |
|
394 |
arg: |
395 |
expr |
396 |
|
397 |
assignment: |
398 |
VARIABLE ASSIGNMENT expr { |
399 |
//printf("variable lookup with name '%s' as assignment expr\n", $1); |
400 |
const char* name = $1; |
401 |
VariableRef var = context->variableByName(name); |
402 |
if (!var) |
403 |
PARSE_ERR((String("Variable assignment: No variable declared with name '") + name + "'.").c_str()); |
404 |
else if (var->isConstExpr()) |
405 |
PARSE_ERR((String("Variable assignment: Cannot modify const variable '") + name + "'.").c_str()); |
406 |
else if (var->exprType() != $3->exprType()) |
407 |
PARSE_ERR((String("Variable assignment: Variable '") + name + "' is of type " + typeStr(var->exprType()) + ", assignment is of type " + typeStr($3->exprType()) + " though.").c_str()); |
408 |
$$ = new Assignment(var, $3); |
409 |
} |
410 |
| VARIABLE '[' expr ']' ASSIGNMENT expr { |
411 |
const char* name = $1; |
412 |
VariableRef var = context->variableByName(name); |
413 |
if (!var) |
414 |
PARSE_ERR((String("No variable declared with name '") + name + "'.").c_str()); |
415 |
else if (var->exprType() != INT_ARR_EXPR) |
416 |
PARSE_ERR((String("Variable '") + name + "' is not an array variable.").c_str()); |
417 |
else if ($3->exprType() != INT_EXPR) |
418 |
PARSE_ERR((String("Array variable '") + name + "' accessed with non integer expression.").c_str()); |
419 |
else if ($6->exprType() != INT_EXPR) |
420 |
PARSE_ERR((String("Value assigned to array variable '") + name + "' must be an integer expression.").c_str()); |
421 |
IntArrayElementRef element = new IntArrayElement(var, $3); |
422 |
$$ = new Assignment(element, $6); |
423 |
} |
424 |
|
425 |
unary_expr: |
426 |
INTEGER { |
427 |
$$ = new IntLiteral($1); |
428 |
} |
429 |
| STRING { |
430 |
$$ = new StringLiteral($1); |
431 |
} |
432 |
| VARIABLE { |
433 |
//printf("variable lookup with name '%s' as unary expr\n", $1); |
434 |
VariableRef var = context->variableByName($1); |
435 |
if (var) |
436 |
$$ = var; |
437 |
else { |
438 |
PARSE_ERR((String("No variable declared with name '") + $1 + "'.").c_str()); |
439 |
$$ = new IntLiteral(0); |
440 |
} |
441 |
} |
442 |
| VARIABLE '[' expr ']' { |
443 |
const char* name = $1; |
444 |
VariableRef var = context->variableByName(name); |
445 |
if (!var) { |
446 |
PARSE_ERR((String("No variable declared with name '") + name + "'.").c_str()); |
447 |
$$ = new IntLiteral(0); |
448 |
} else if (var->exprType() != INT_ARR_EXPR) { |
449 |
PARSE_ERR((String("Variable '") + name + "' is not an array variable.").c_str()); |
450 |
$$ = new IntLiteral(0); |
451 |
} else if ($3->exprType() != INT_EXPR) { |
452 |
PARSE_ERR((String("Array variable '") + name + "' accessed with non integer expression.").c_str()); |
453 |
$$ = new IntLiteral(0); |
454 |
} else { |
455 |
$$ = new IntArrayElement(var, $3); |
456 |
} |
457 |
} |
458 |
| '(' expr ')' { |
459 |
$$ = $2; |
460 |
} |
461 |
| functioncall { |
462 |
$$ = $1; |
463 |
} |
464 |
| '-' unary_expr { |
465 |
$$ = new Neg($2); |
466 |
} |
467 |
| NOT unary_expr { |
468 |
if ($2->exprType() != INT_EXPR) { |
469 |
PARSE_ERR((String("Right operand of operator 'not' must be an integer expression, is ") + typeStr($2->exprType()) + " though.").c_str()); |
470 |
$$ = new IntLiteral(0); |
471 |
} else { |
472 |
$$ = new Not($2); |
473 |
} |
474 |
} |
475 |
|
476 |
expr: |
477 |
concat_expr |
478 |
|
479 |
concat_expr: |
480 |
or_expr |
481 |
| concat_expr '&' or_expr { |
482 |
ExpressionRef lhs = $1; |
483 |
ExpressionRef rhs = $3; |
484 |
if (lhs->isConstExpr() && rhs->isConstExpr()) { |
485 |
$$ = new StringLiteral( |
486 |
lhs->evalCastToStr() + rhs->evalCastToStr() |
487 |
); |
488 |
} else { |
489 |
$$ = new ConcatString(lhs, rhs); |
490 |
} |
491 |
} |
492 |
|
493 |
or_expr: |
494 |
and_expr |
495 |
| or_expr OR and_expr { |
496 |
ExpressionRef lhs = $1; |
497 |
ExpressionRef rhs = $3; |
498 |
if (lhs->exprType() != INT_EXPR) { |
499 |
PARSE_ERR((String("Left operand of operator 'or' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
500 |
$$ = new IntLiteral(0); |
501 |
} else if (rhs->exprType() != INT_EXPR) { |
502 |
PARSE_ERR((String("Right operand of operator 'or' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
503 |
$$ = new IntLiteral(0); |
504 |
} else { |
505 |
$$ = new Or(lhs, rhs); |
506 |
} |
507 |
} |
508 |
|
509 |
and_expr: |
510 |
rel_expr { |
511 |
$$ = $1; |
512 |
} |
513 |
| and_expr AND rel_expr { |
514 |
ExpressionRef lhs = $1; |
515 |
ExpressionRef rhs = $3; |
516 |
if (lhs->exprType() != INT_EXPR) { |
517 |
PARSE_ERR((String("Left operand of operator 'and' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
518 |
$$ = new IntLiteral(0); |
519 |
} else if (rhs->exprType() != INT_EXPR) { |
520 |
PARSE_ERR((String("Right operand of operator 'and' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
521 |
$$ = new IntLiteral(0); |
522 |
} else { |
523 |
$$ = new And(lhs, rhs); |
524 |
} |
525 |
} |
526 |
|
527 |
rel_expr: |
528 |
add_expr |
529 |
| rel_expr '<' add_expr { |
530 |
ExpressionRef lhs = $1; |
531 |
ExpressionRef rhs = $3; |
532 |
if (lhs->exprType() != INT_EXPR) { |
533 |
PARSE_ERR((String("Left operand of operator '<' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
534 |
$$ = new IntLiteral(0); |
535 |
} else if (rhs->exprType() != INT_EXPR) { |
536 |
PARSE_ERR((String("Right operand of operator '<' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
537 |
$$ = new IntLiteral(0); |
538 |
} else { |
539 |
$$ = new Relation(lhs, Relation::LESS_THAN, rhs); |
540 |
} |
541 |
} |
542 |
| rel_expr '>' add_expr { |
543 |
ExpressionRef lhs = $1; |
544 |
ExpressionRef rhs = $3; |
545 |
if (lhs->exprType() != INT_EXPR) { |
546 |
PARSE_ERR((String("Left operand of operator '>' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
547 |
$$ = new IntLiteral(0); |
548 |
} else if (rhs->exprType() != INT_EXPR) { |
549 |
PARSE_ERR((String("Right operand of operator '>' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
550 |
$$ = new IntLiteral(0); |
551 |
} else { |
552 |
$$ = new Relation(lhs, Relation::GREATER_THAN, rhs); |
553 |
} |
554 |
} |
555 |
| rel_expr LE add_expr { |
556 |
ExpressionRef lhs = $1; |
557 |
ExpressionRef rhs = $3; |
558 |
if (lhs->exprType() != INT_EXPR) { |
559 |
PARSE_ERR((String("Left operand of operator '<=' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
560 |
$$ = new IntLiteral(0); |
561 |
} else if (rhs->exprType() != INT_EXPR) { |
562 |
PARSE_ERR((String("Right operand of operator '<=' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
563 |
$$ = new IntLiteral(0); |
564 |
} else { |
565 |
$$ = new Relation(lhs, Relation::LESS_OR_EQUAL, rhs); |
566 |
} |
567 |
} |
568 |
| rel_expr GE add_expr { |
569 |
ExpressionRef lhs = $1; |
570 |
ExpressionRef rhs = $3; |
571 |
if (lhs->exprType() != INT_EXPR) { |
572 |
PARSE_ERR((String("Left operand of operator '>=' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
573 |
$$ = new IntLiteral(0); |
574 |
} else if (rhs->exprType() != INT_EXPR) { |
575 |
PARSE_ERR((String("Right operand of operator '>=' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
576 |
$$ = new IntLiteral(0); |
577 |
} else { |
578 |
$$ = new Relation(lhs, Relation::GREATER_OR_EQUAL, rhs); |
579 |
} |
580 |
} |
581 |
| rel_expr '=' add_expr { |
582 |
$$ = new Relation($1, Relation::EQUAL, $3); |
583 |
} |
584 |
| rel_expr '#' add_expr { |
585 |
$$ = new Relation($1, Relation::NOT_EQUAL, $3); |
586 |
} |
587 |
|
588 |
add_expr: |
589 |
mul_expr |
590 |
| add_expr '+' mul_expr { |
591 |
ExpressionRef lhs = $1; |
592 |
ExpressionRef rhs = $3; |
593 |
if (lhs->exprType() != INT_EXPR) { |
594 |
PARSE_ERR((String("Left operand of operator '+' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
595 |
$$ = new IntLiteral(0); |
596 |
} else if (rhs->exprType() != INT_EXPR) { |
597 |
PARSE_ERR((String("Right operand of operator '+' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
598 |
$$ = new IntLiteral(0); |
599 |
} else { |
600 |
$$ = new Add(lhs,rhs); |
601 |
} |
602 |
} |
603 |
| add_expr '-' mul_expr { |
604 |
ExpressionRef lhs = $1; |
605 |
ExpressionRef rhs = $3; |
606 |
if (lhs->exprType() != INT_EXPR) { |
607 |
PARSE_ERR((String("Left operand of operator '-' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
608 |
$$ = new IntLiteral(0); |
609 |
} else if (rhs->exprType() != INT_EXPR) { |
610 |
PARSE_ERR((String("Right operand of operator '-' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
611 |
$$ = new IntLiteral(0); |
612 |
} else { |
613 |
$$ = new Sub(lhs,rhs); |
614 |
} |
615 |
} |
616 |
|
617 |
mul_expr: |
618 |
unary_expr |
619 |
| mul_expr '*' unary_expr { |
620 |
ExpressionRef lhs = $1; |
621 |
ExpressionRef rhs = $3; |
622 |
if (lhs->exprType() != INT_EXPR) { |
623 |
PARSE_ERR((String("Left operand of operator '*' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
624 |
$$ = new IntLiteral(0); |
625 |
} else if (rhs->exprType() != INT_EXPR) { |
626 |
PARSE_ERR((String("Right operand of operator '*' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
627 |
$$ = new IntLiteral(0); |
628 |
} else { |
629 |
$$ = new Mul(lhs,rhs); |
630 |
} |
631 |
} |
632 |
| mul_expr '/' unary_expr { |
633 |
ExpressionRef lhs = $1; |
634 |
ExpressionRef rhs = $3; |
635 |
if (lhs->exprType() != INT_EXPR) { |
636 |
PARSE_ERR((String("Left operand of operator '/' must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
637 |
$$ = new IntLiteral(0); |
638 |
} else if (rhs->exprType() != INT_EXPR) { |
639 |
PARSE_ERR((String("Right operand of operator '/' must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
640 |
$$ = new IntLiteral(0); |
641 |
} else { |
642 |
$$ = new Div(lhs,rhs); |
643 |
} |
644 |
} |
645 |
| mul_expr MOD unary_expr { |
646 |
ExpressionRef lhs = $1; |
647 |
ExpressionRef rhs = $3; |
648 |
if (lhs->exprType() != INT_EXPR) { |
649 |
PARSE_ERR((String("Left operand of modulo operator must be an integer expression, is ") + typeStr(lhs->exprType()) + " though.").c_str()); |
650 |
$$ = new IntLiteral(0); |
651 |
} else if (rhs->exprType() != INT_EXPR) { |
652 |
PARSE_ERR((String("Right operand of modulo operator must be an integer expression, is ") + typeStr(rhs->exprType()) + " though.").c_str()); |
653 |
$$ = new IntLiteral(0); |
654 |
} else { |
655 |
$$ = new Mod(lhs,rhs); |
656 |
} |
657 |
} |
658 |
|
659 |
%% |
660 |
|
661 |
void InstrScript_error(YYLTYPE* locp, LinuxSampler::ParserContext* context, const char* err) { |
662 |
//fprintf(stderr, "%d: %s\n", locp->first_line, err); |
663 |
context->addErr(locp->first_line, err); |
664 |
} |
665 |
|
666 |
void InstrScript_warning(YYLTYPE* locp, LinuxSampler::ParserContext* context, const char* txt) { |
667 |
//fprintf(stderr, "WRN %d: %s\n", locp->first_line, txt); |
668 |
context->addWrn(locp->first_line, txt); |
669 |
} |