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// printutils.c
//

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

#include "slglobals.h"

///////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////// Debug Printing Functions: //////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////////////

#undef PICK
#define PICK(a, b, c, d, e) b

const char *opcode_name[] = {
    OPCODE_TABLE
};

#undef PICK
#define PICK(a, b, c, d, e) e

const subopkind subop_table[] = {
    OPCODE_TABLE
};

#undef PICK

/*
 * lIndent()
 *
 */

static void lIndent(int level)
{
    int ii;

    for (ii = 0; ii < level; ii++)
        printf("    ");
} // lIndent

/*
 * lBPrintExpression() - Print a low level representation of an expression tree.
 *
 */

static void lBPrintExpression(expr *fexpr, int level)
{
    char s[32];
    int subop, mask, ii, nn, bval;
    int OK = 1, HasString = 0;

    lIndent(level);
    if (fexpr) {
        switch (fexpr->common.kind) {
        case DECL_N:
            printf("DECLARATION");
            OK = 0;
            break;
        case SYMB_N:
            printf("S ");
            break;
        case CONST_N:
            printf("C ");
            break;
        case UNARY_N:
            printf("U ");
            break;
        case BINARY_N:
            printf("B ");
            break;
        case TRINARY_N:
            printf("T ");
            break;
        default:
            printf("<kind=%02x>", fexpr->common.kind);
            OK = 0;
            break;
        }
        if (OK) {
            printf("%c%c", fexpr->sym.IsLValue ? 'L' : ' ',
                    fexpr->common.HasSideEffects ? '+' : ' ');
            subop = fexpr->co.subop;
            switch (subop_table[fexpr->co.op]) {
                case SUB_NONE:
                    printf("- - - ");
                    mask = ~0;
                    break;
                case SUB_S:
                    printf("- - %1x ", SUBOP_GET_T(subop));
                    mask = 0x0000000f;
                    break;
                case SUB_V:
                case SUB_VS:
                case SUB_SV:
                    printf("- %1x %1x ", SUBOP_GET_S(subop), SUBOP_GET_T(subop));
                    mask = 0x000000ff;
                    break;
                case SUB_M:
                case SUB_VM:
                case SUB_MV:
                    printf("%1x %1x %1x ", SUBOP_GET_S2(subop), SUBOP_GET_S1(subop),
                            SUBOP_GET_T1(subop));
                    mask = 0x0000f0ff;
                    break;
                case SUB_Z:
                    printf("%1x %1x %1x ", SUBOP_GET_S2(subop), SUBOP_GET_S1(subop),
                            SUBOP_GET_T1(subop));
                    mask = SUBOP_GET_MASK(subop);
                    nn = SUBOP_GET_S2(subop);
                    if (nn == 0)
                        nn = 1; // var.x is scalar, not array[1]
                    s[nn] = '\0';
                    for (ii = 0; ii < nn; ii++)
                        s[ii] = "xyzw"[(mask >> ii*2) & 3];
                    mask = 0x00fff0ff;
                    HasString = 1;
                    break;
                case SUB_ZM:
                    printf("%1x %1x %1x %1x ", SUBOP_GET_S2(subop), SUBOP_GET_T2(subop),
                            SUBOP_GET_S1(subop), SUBOP_GET_T1(subop));
                    mask = SUBOP_GET_MASK16(subop);
                    nn = SUBOP_GET_T2(subop);
                    if (nn == 0)
                        nn = 1; // var.x is scalar, not array[1]
                    s[nn*3] = '\0';
                    for (ii = 0; ii < nn; ii++) {
                        s[ii*3] = '_';
                        s[ii*3 + 1] = '0' + ((mask >> (ii*4 + 2)) & 3);
                        s[ii*3 + 2] = '0' + ((mask >> ii*4) & 3);
                    }
                    mask = 0xffffffff;
                    HasString = 1;
                    break;
                case SUB_CS:
                    printf("%1x - %1x ", SUBOP_GET_T2(subop), SUBOP_GET_T1(subop));
                    mask = 0x00000f0f;
                    break;
                case SUB_CV:
                    printf("%1x %1x %1x ", SUBOP_GET_T2(subop), SUBOP_GET_S1(subop),
                            SUBOP_GET_T1(subop));
                    mask = 0x00000fff;
                    break;
                case SUB_CM:
                    printf("%1x %1x %1x %1x ", SUBOP_GET_S2(subop), SUBOP_GET_T2(subop),
                            SUBOP_GET_S1(subop), SUBOP_GET_T1(subop));
                    mask = 0x0000ffff;
                    break;
                case SUB_KV:
                    printf("- %1x %1x ", SUBOP_GET_S(subop), SUBOP_GET_T(subop));
                    mask = SUBOP_GET_MASK(subop) & 0xf;
                    for (ii = 0; ii < 4; ii++)
                        printf("%c", (mask >> ii) & 1 ? "xyzw"[ii] : '-');
                    printf(" ");
                    mask = 0x000f00ff;
                    break;
                default:
                    mask = 0;
                    break;
            }
            if (subop & ~mask)
                printf("<<non-zero:%08x>> ", subop & ~mask);
            printf("%-6s ", opcode_name[fexpr->co.op]);
            switch (fexpr->common.kind) {
            case SYMB_N:
                printf("\"%s\"", GetAtomString(atable, fexpr->sym.symbol->name));
                break;
            case CONST_N:
                switch (fexpr->co.op) {
                case ICONST_OP:
                    printf("%d", fexpr->co.val[0].i);
                    break;
                case ICONST_V_OP:
                    nn = SUBOP_GET_S(subop);
                    printf("{ ");
                    for (ii = 0; ii < nn; ii++) {
                        if (ii > 0)
                            printf(", ");
                        printf("%d", fexpr->co.val[ii].i);
                    }
                    printf(" }");
                    break;
                case BCONST_OP:
                    bval = fexpr->co.val[0].i;
                    if (bval == 0) {
                        printf("false");
                    } else if (bval == 1) {
                        printf("true");
                    } else {
                        printf("<<bad-bool-%08x>>", fexpr->co.val[0].i);
                    }
                    break;
                case BCONST_V_OP:
                    nn = SUBOP_GET_S(subop);
                    printf("{ ");
                    for (ii = 0; ii < nn; ii++) {
                        if (ii > 0)
                            printf(", ");
                        bval = fexpr->co.val[ii].i;
                        if (bval == 0) {
                            printf("false");
                        } else if (bval == 1) {
                            printf("true");
                        } else {
                            printf("<<bad-bool-%08x>>", fexpr->co.val[ii].i);
                        }
                    }
                    printf(" }");
                    break;
                case FCONST_OP:
                case HCONST_OP:
                case XCONST_OP:
                    printf("%1.6g", fexpr->co.val[0].f);
                    break;
                case FCONST_V_OP:
                case HCONST_V_OP:
                case XCONST_V_OP:
                    nn = SUBOP_GET_S(subop);
                    printf("{ ");
                    for (ii = 0; ii < nn; ii++) {
                        if (ii > 0)
                            printf(", ");
                        printf("%1.6g", fexpr->co.val[ii].f);
                    }
                    printf(" }");
                    break;
                default:
                    printf("UNKNOWN-CONSTANT");
                    break;
                }
                break;
            case UNARY_N:
                break;
            case BINARY_N:
                break;
            case TRINARY_N:
                break;
            }
            if (HasString)
                printf(" %s", s);
            printf(" ");
            PrintType(fexpr->common.type, 1);
            printf("\n");
            switch (fexpr->common.kind) {
            case SYMB_N:
                break;
            case CONST_N:
                break;
            case UNARY_N:
                lBPrintExpression(fexpr->un.arg, level + 1);
                break;
            case BINARY_N:
                lBPrintExpression(fexpr->bin.left, level + 1);
                lBPrintExpression(fexpr->bin.right, level + 1);
                break;
            case TRINARY_N:
                lBPrintExpression(fexpr->tri.arg1, level + 1);
                lBPrintExpression(fexpr->tri.arg2, level + 1);
                lBPrintExpression(fexpr->tri.arg3, level + 1);
                break;
            }
        } else {
            printf("\n");
        }
    } else {
        printf("NULL\n");
    }
} // lBPrintExpression

void BPrintExpression(expr *fexpr)
{
    lBPrintExpression(fexpr, 0);
}

static void lBPrintStmt(stmt *fstmt, int level);

/*
 * lBPrintStmtList()
 *
 */

void lBPrintStmtList(stmt *fstmt, int level)
{
    while (fstmt) {
        lBPrintStmt(fstmt, level);
        fstmt = fstmt->commonst.next;
    }
} // lBPrintStmtList

void BPrintStmtList(stmt *fstmt)
{
    lBPrintStmtList(fstmt, 0);
}

/*
 * lBPrintStmt()
 *
 */

static void lBPrintStmt(stmt *fstmt, int level)
{
    stmt *lstmt;

    switch (fstmt->exprst.kind) {
    case EXPR_STMT:
        if (fstmt->exprst.exp) {
            lBPrintExpression(fstmt->exprst.exp, level);
        } else {
            printf("/* empty statement */\n");
        }
        break;
    case IF_STMT:
        lIndent(level);
        printf("if\n");
        lBPrintExpression(fstmt->ifst.cond, level + 1);
        lIndent(level);
        printf("then\n");
        lBPrintStmtList(fstmt->ifst.thenstmt, level + 1);
        if (fstmt->ifst.elsestmt) {
            lIndent(level);
            printf("else\n");
            lBPrintStmtList(fstmt->ifst.elsestmt, level + 1);
        }
        break;
    case WHILE_STMT:
        lIndent(level);
        printf("while\n");
        lBPrintExpression(fstmt->whilest.cond, level + 1);
        lBPrintStmtList(fstmt->whilest.body, level + 1);
        break;
    case DO_STMT:
        lIndent(level);
        printf("do\n");
        lBPrintStmtList(fstmt->whilest.body, level + 1);
        lIndent(level);
        printf("while\n");
        lBPrintExpression(fstmt->whilest.cond, level + 1);
        break;
    case FOR_STMT:
        lIndent(level);
        printf("for\n");
        lstmt = fstmt->forst.init;
        if (lstmt) {
            lBPrintStmtList(fstmt->forst.init, level + 1);
        }
        printf("for-cond\n");
        if (fstmt->forst.cond) {
            lBPrintExpression(fstmt->forst.cond, level + 1);
        }
        printf("for-step\n");
        lstmt = fstmt->forst.step;
        if (lstmt) {
            lBPrintStmtList(fstmt->forst.step, level + 1);
        }
        printf("for-body\n");
        lBPrintStmtList(fstmt->forst.body, level + 1);
        break;
    case BLOCK_STMT:
        if (level > 1)
            lIndent(level - 1);
        printf("{\n");
        lBPrintStmtList(fstmt->blockst.body, level);
        if (level > 1)
            lIndent(level - 1);
        printf("}\n");
        break;
    case RETURN_STMT:
        lIndent(level);
        printf("return\n");
        if (fstmt->returnst.exp) {
            lBPrintExpression(fstmt->returnst.exp, level + 1);
        }
        break;
    case DISCARD_STMT:
        lIndent(level);
        printf("discard\n");
        if (fstmt->discardst.cond)
            lBPrintExpression(fstmt->discardst.cond, level + 1);
        break;
    case COMMENT_STMT:
        lIndent(level);
        printf("// %s\n", GetAtomString(atable, fstmt->commentst.str));
        break;
    default:
        lIndent(level);
        printf("<!BadStmt-0x%2x>\n", fstmt->exprst.kind);
    }
} // lBPrintStmt

void BPrintStmt(stmt *fstmt)
{
    lBPrintStmt(fstmt, 0);
}

/*
 * FormatTypeString() - Build a printable string of a type.
 *
 * Arrays are shown as: "packed float[4]" instead of "float4".
 *
 */

void FormatTypeString(char *name, int size, char *name2, int size2, Type *fType)
{
    int qualifiers, category, base, cid;
    char tname[32];

    strcpy(name2, "");