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//
// binding.c
//

#include <stdlib.h>
#include <stdio.h>

#include "slglobals.h"

///////////////////////////////////////////////////////////////////////////////////////////////
///////////////////////// Connector and Parameter Binding Functions: //////////////////////////
///////////////////////////////////////////////////////////////////////////////////////////////

/*
 * lInitBinding()
 *
 */

static void lInitBinding(Binding *fBind)
{
    fBind->none.properties = 0;
    fBind->none.gname = 0;
    fBind->none.lname = 0;
    fBind->none.base = 0;
    fBind->none.size = 0;
    fBind->none.kind = BK_NONE;
} // lInitBinding

/*
 * NewBinding()
 *
 */

Binding *NewBinding(int gname, int sname)
{
    Binding *lBind;

    lBind = (Binding *) malloc(sizeof(Binding));
    lInitBinding(lBind);
    lBind->none.gname = gname;
    lBind->none.lname = sname;
    return lBind;
} // NewBinding

/*
 * NewConstDefaultBinding()
 *
 */

Binding *NewConstDefaultBinding(int gname, int sname, int count, int rname, int regno,
                                float *fval)
{
    Binding *lBind;
    int ii;

    lBind = NewBinding(gname, sname);
    lBind->constdef.kind = BK_CONSTANT;
    lBind->constdef.size = count;
    lBind->constdef.rname = rname;
    lBind->constdef.regno = regno;
    for (ii = 0; ii < count; ii++)
        lBind->constdef.val[ii] = fval[ii];
    return lBind;
} // NewConstDefaultBinding

/*
 * NewBindingTree()
 *
 */

BindingTree *NewBindingTree(SourceLoc *loc)
{
    BindingTree *lTree;

    lTree = (BindingTree *) malloc(sizeof(BindingTree));
    lInitBinding(&lTree->binding);
    lTree->nextc = NULL;
    lTree->nextm = NULL;
    lTree->loc = *loc;
    lTree->loc.line = 0;
    return lTree;
} // NewBindingTree

/*
 * NewConnectorBindingTree()
 *
 */

BindingTree *NewConnectorBindingTree(SourceLoc *loc, int cname, int mname, int rname)
{
    BindingTree *lTree;
    BindingConnector *lBind;

    lTree = NewBindingTree(loc);
    lBind = &lTree->binding.conn;
    lBind->gname = cname;
    lBind->lname = mname;
    lBind->kind = BK_CONNECTOR;
    lBind->rname = rname;
    lBind->regno = 0;
    return lTree;
} // NewConnectorBindingTree

/*
 * NewRegArrayBindingTree()
 *
 */

BindingTree *NewRegArrayBindingTree(SourceLoc *loc, int pname, int aname, int rname, int regno,
                                    int count)
{
    BindingTree *lTree;
    BindingRegArray *lBind;

    lTree = NewBindingTree(loc);
    lBind = &lTree->binding.reg;
    lBind->gname = pname;
    lBind->lname = aname;
    lBind->kind = BK_REGARRAY;
    lBind->rname = rname;
    lBind->regno = regno;
    lBind->count = count;
    return lTree;
} // NewRegArrayBindingTree

/*
 * NewTexunitBindingTree()
 *
 */

BindingTree *NewTexunitBindingTree(SourceLoc *loc, int pname, int aname, int unitno)
{
    BindingTree *lTree;
    BindingTexunit *lBind;

    lTree = NewBindingTree(loc);
    lBind = &lTree->binding.texunit;
    lBind->gname = pname;
    lBind->lname = aname;
    lBind->kind = BK_TEXUNIT;
    lBind->unitno = unitno;
    return lTree;
} // NewTexunitBindingTree

/*
 * NewConstDefaultBindingTree()
 *
 */

BindingTree *NewConstDefaultBindingTree(SourceLoc *loc, int kind, int pname, int aname,
                                        int count, float *fval)
{
    BindingTree *lTree;
    BindingConstDefault *lBind;
    int ii;

    if (count > 4)
        count = 4;
    lTree = NewBindingTree(loc);
    lBind = &lTree->binding.constdef;
    lBind->gname = pname;
    lBind->lname = aname;
    lBind->kind = kind;
    lBind->size = count;
    lBind->rname = 0;
    lBind->regno = 0;
    for (ii = 0; ii < count; ii++)
        lBind->val[ii] = fval[ii];
    return lTree;
} // NewConstDefaultBindingTree

/*
 * LookupBinding()
 *
 */

BindingTree *LookupBinding(int gname, int lname)
{
    BindingTree *lTree;

    lTree = Cg->bindings;
    while (lTree) {
        if (lTree->binding.none.gname == gname) {
            do {
                if (lTree->binding.none.lname == lname) {
                    return lTree;
                } else {
                    lTree = lTree->nextm;
                }
            } while (lTree);
            return NULL;
        }
        lTree = lTree->nextc;
    }
    return NULL;
} // LookupBinding

/*
 * AddBinding()
 *
 */

void AddBinding(BindingTree *fTree)
{
    BindingTree *lTree;

    lTree = Cg->bindings;
    while (lTree) {
        if (lTree->binding.none.gname == fTree->binding.none.gname)
            break;
        lTree = lTree->nextc;
    }
    if (lTree) {
        fTree->nextm = lTree->nextm;
        lTree->nextm = fTree;
    } else {
        fTree->nextc = Cg->bindings;
        Cg->bindings = fTree;
    }
} // AddBinding

/*
 * DefineConnectorBinding() - Define a binding between a member of a connector and a hw reg.
 *
 * #pragma bind <conn-id> "." <memb-id> "=" <reg-id>
 *
 */

void DefineConnectorBinding(SourceLoc *loc, int cname, int mname, int rname)
{
    BindingTree *lTree;

    lTree = LookupBinding(cname, mname);
    if (lTree) {
        SemanticError(loc, ERROR_SSSD_DUPLICATE_BINDING,
            GetAtomString(atable, cname), GetAtomString(atable, mname),
            GetAtomString(atable, lTree->loc.file), lTree->loc.line);
        return;
    }
    lTree = NewConnectorBindingTree(loc, cname, mname, rname);
    AddBinding(lTree);
} // DefineConnectorBinding

/*
 * DefineRegArrayBinding() - Define a binding between a member of a connector and a hw reg.
 *
 * #pragma bind <prog-id> "." <arg-id> "=" <reg-id>
 *
 */

void DefineRegArrayBinding(SourceLoc *loc, int pname, int aname, int rname, int index,
                           int count)
{
    BindingTree *lTree;

    lTree = LookupBinding(pname, aname);
    if (lTree) {
        SemanticError(loc, ERROR_SSSD_DUPLICATE_BINDING,
            GetAtomString(atable, pname), GetAtomString(atable, aname),
            GetAtomString(atable, lTree->loc.file), lTree->loc.line);
        return;
    }
    lTree = NewRegArrayBindingTree(loc, pname, aname, rname, index, count);
    AddBinding(lTree);
} // DefineRegArrayBinding

/*
 * DefineTexunitBinding() - Define a binding between a member of a connector and a hw reg.
 *
 * #pragma bind <prog-id> "." <arg-id> "=" <reg-id> <i-const> [ <i-const> ]
 *
 */

void DefineTexunitBinding(SourceLoc *loc, int pname, int aname, int unitno)
{
    BindingTree *lTree;

    lTree = LookupBinding(pname, aname);
    if (lTree) {
        SemanticError(loc, ERROR_SSSD_DUPLICATE_BINDING,
            GetAtomString(atable, pname), GetAtomString(atable, aname),
            GetAtomString(atable, lTree->loc.file), lTree->loc.line);
        return;
    }
    lTree = NewTexunitBindingTree(loc, pname, aname, unitno);
    AddBinding(lTree);
} // DefineTexunitBinding

/*
 * DefineConstantBinding() - Define a binding between a member of a connector and a hw reg.
 *
 * #pragma bind <prog-id> "." <arg-id> "=" "constant" <simple-float-expr>+
 *
 */

void DefineConstantBinding(SourceLoc *loc, int pname, int aname, int count, float *fval)
{
    BindingTree *lTree;

    lTree = LookupBinding(pname, aname);
    if (lTree) {
        SemanticError(loc, ERROR_SSSD_DUPLICATE_BINDING,
            GetAtomString(atable, pname), GetAtomString(atable, aname),
            GetAtomString(atable, lTree->loc.file), lTree->loc.line);
        return;
    }
    lTree = NewConstDefaultBindingTree(loc, BK_CONSTANT, pname, aname, count, fval);
    AddBinding(lTree);
} // DefineConstantBinding

/*
 * DefineDefaultBinding() - Define a binding between a member of a connector and a hw reg.
 *
 * #pragma bind <prog-id> "." <arg-id> "=" "default" <simple-float-expr>+
 *
 */

void DefineDefaultBinding(SourceLoc *loc, int pname, int aname, int count, float *fval)
{
    BindingTree *lTree;

    lTree = LookupBinding(pname, aname);
    if (lTree) {
        SemanticError(loc, ERROR_SSSD_DUPLICATE_BINDING,
            GetAtomString(atable, pname), GetAtomString(atable, aname),
            GetAtomString(atable, lTree->loc.file), lTree->loc.line);
        return;
    }
    lTree = NewConstDefaultBindingTree(loc, BK_DEFAULT, pname, aname, count, fval);
    AddBinding(lTree);
} // DefineDefaultBinding

///////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////// Uniform Semantics: /////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////////////

/*
 * NewUniformSemantic() - Aloocate a new UniformSemantic record.
 *
 */

UniformSemantic *NewUniformSemantic(int gname, int vname, int semantic)
{
    UniformSemantic *lSemantic;

    lSemantic = (UniformSemantic *) malloc(sizeof(UniformSemantic));
    lSemantic->next = NULL;
    lSemantic->gname = gname;
    lSemantic->vname = vname;
    lSemantic->semantic = semantic;

    return lSemantic;
} // NewUniformSemantic

///////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////// End of binding.c //////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////////////