END_TEST
START_TEST (test_FormulaFormatter_formatReal)
{
StringBuffer_t *sb = StringBuffer_create(42);
char *s = StringBuffer_getBuffer(sb);
ASTNode_t *n = ASTNode_create();
/** 1.2 **/
ASTNode_setReal(n, 1.2);
FormulaFormatter_formatReal(sb, n);
fail_unless( !strcmp(s, "1.2"), NULL );
StringBuffer_reset(sb);
/** 1e-100 **/
ASTNode_setRealWithExponent(n, 1, -100);
FormulaFormatter_formatReal(sb, n);
fail_unless( !strcmp(s, "1.000000e-100"), NULL );
StringBuffer_reset(sb);
/** NaN **/
ASTNode_setReal(n, util_NaN());
FormulaFormatter_formatReal(sb, n);
fail_unless( !strcmp(s, "NaN"), NULL );
StringBuffer_reset(sb);
/** Inf **/
ASTNode_setReal(n, util_PosInf());
FormulaFormatter_formatReal(sb, n);
fail_unless( !strcmp(s, "INF"), NULL );
StringBuffer_reset(sb);
/** -Inf **/
ASTNode_setReal(n, util_NegInf());
FormulaFormatter_formatReal(sb, n);
fail_unless( !strcmp(s, "-INF"), NULL );
StringBuffer_reset(sb);
/** -0 **/
ASTNode_setReal(n, util_NegZero());
FormulaFormatter_formatReal(sb, n);
fail_unless( !strcmp(s, "-0"), NULL );
StringBuffer_reset(sb);
StringBuffer_free(sb);
ASTNode_free(n);
}
/**
* Reduces the given stack (containing SLR parser states and ASTNodes) by
* the given grammar rule.
*/
ASTNode_t *
FormulaParser_reduceStackByRule (Stack_t *stack, long rule)
{
ASTNode_t *result = NULL;
ASTNode_t *lexpr, *rexpr, *operator;
/**
* Rule 1: Stmt -> Expr
* Rule 9: Expr -> NUMBER
* Rule 10: Expr -> NAME
* Rule 13: OptArgs -> Args
*/
if (rule == 1 || rule == 9 || rule == 10 || rule == 13)
{
Stack_pop(stack);
result = Stack_pop(stack);
if (rule == 10)
{
/**
* Convert result to a recognized L2 function constant (if
* applicable).
*/
ASTNode_canonicalize(result);
}
}
/**
* Rule 2: Expr -> Expr PLUS Expr
* Rule 3: Expr -> Expr MINUS Expr
* Rule 4: Expr -> Expr TIMES Expr
* Rule 5: Expr -> Expr DIVIDE Expr
* Rule 6: Expr -> Expr POWER Expr
*/
else if (rule >= 2 && rule <= 6)
{
Stack_pop(stack);
rexpr = Stack_pop(stack);
Stack_pop(stack);
operator = Stack_pop(stack);
Stack_pop(stack);
lexpr = Stack_pop(stack);
ASTNode_addChild(operator, lexpr);
ASTNode_addChild(operator, rexpr);
result = operator;
}
/**
* Rule 7: Expr -> MINUS Expr
*/
else if (rule == 7)
{
Stack_pop(stack);
lexpr = Stack_pop(stack);
Stack_pop(stack);
operator = Stack_pop(stack);
/**
* Perform a simple tree reduction, if possible.
*
* If Expr is an AST_INTEGER or AST_REAL (or AST_REAL_E), simply negate
* the numeric value. Otheriwse, a (unary) AST_MINUS node should be
* returned.
*/
if (ASTNode_getType(lexpr) == AST_INTEGER)
{
ASTNode_setInteger(lexpr, - ASTNode_getInteger(lexpr));
ASTNode_free(operator);
result = lexpr;
}
else if ( ASTNode_getType(lexpr) == AST_REAL)
{
ASTNode_setReal(lexpr, - ASTNode_getReal(lexpr));
ASTNode_free(operator);
result = lexpr;
}
else if (ASTNode_getType(lexpr) == AST_REAL_E)
{
ASTNode_setRealWithExponent( lexpr,
- ASTNode_getMantissa(lexpr),
ASTNode_getExponent(lexpr) );
ASTNode_free(operator);
result = lexpr;
}
else
{
ASTNode_addChild(operator, lexpr);
result = operator;
}
}
/**
* Rule 8: Expr -> LPAREN Expr RPAREN
*/
else if (rule == 8)
{
Stack_pop(stack);
ASTNode_free( Stack_pop(stack) );
Stack_pop(stack);
result = Stack_pop(stack);
Stack_pop(stack);
ASTNode_free( Stack_pop(stack) );
}
/**
* Rule 11: Expr -> NAME LPAREN OptArgs RPAREN
*/
else if (rule == 11)
{
Stack_pop(stack);
ASTNode_free( Stack_pop(stack) );
Stack_pop(stack);
lexpr = Stack_pop(stack);
Stack_pop(stack);
ASTNode_free( Stack_pop(stack) );
Stack_pop(stack);
result = Stack_pop(stack);
ASTNode_setType(result, AST_FUNCTION);
if (lexpr != NULL)
{
/**
* Swap child pointers. In effect the NAME / AST_FUNCTION
* represented by result (which has no children) will "adopt" the
* children of OptArgs which are the arguments to the AST_FUNCTION.
*
* After this, OptArgs (lexpr) is no longer needed.
*/
ASTNode_swapChildren(lexpr, result);
ASTNode_free(lexpr);
}
/**
* Convert result to a recognized L2 function constant (if applicable).
*/
ASTNode_canonicalize(result);
}
/**
* Rule 12: OptArgs -> [empty]
*/
else if (rule == 12)
{
result = NULL;
}
/**
* Rule 14: Args -> Expr
*/
else if (rule == 14)
{
Stack_pop(stack);
lexpr = Stack_pop(stack);
result = ASTNode_create();
ASTNode_addChild(result, lexpr);
}
/**
* Rule 15: Args -> Args COMMA Expr
*/
else if (rule == 15)
{
Stack_pop(stack);
lexpr = Stack_pop(stack);
Stack_pop(stack);
ASTNode_free( Stack_pop(stack) );
Stack_pop(stack);
result = Stack_pop(stack);
ASTNode_addChild(result, lexpr);
}
return result;
}
