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//
// compile.c
//

// In a cygnus tools window in the "gen" directory, run the following command:
//
// bison parser.y --defines -output ../src/parser.c --verbose

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

#include "slglobals.h"

/*
 * OpenOutputFile()
 *
 */

int OpenOutputFile(void)
{
    if (Cg->options.outputFileName) {
        Cg->options.outfd = fopen(Cg->options.outputFileName, "w");
        if (Cg->options.outfd) {
            Cg->options.OutputFileOpen = 1;
        } else {
            FatalError("Can't open output file \"%s\"", Cg->options.outputFileName);
            return 0;
        }
    } else {
        Cg->options.outfd = stdout;
        Cg->options.OutputFileOpen = 1;
    }
    Cg->theHAL->PrintCodeHeader(Cg->options.outfd);
    fprintf(Cg->options.outfd, "%s cgc version %d.%d.%04d%s, build date %s  %s\n", Cg->theHAL->comment,
            HSL_VERSION, HSL_SUB_VERSION, HSL_SUB_SUB_VERSION, NDA_STRING, Build_Date, Build_Time);
    return 1;
} // OpenOutputFile

/*
 * OpenListFile()
 *
 */

int OpenListFile(void)
{
    if (Cg->options.listFileName) {
        Cg->options.listfd = fopen(Cg->options.listFileName, "w");
        if (Cg->options.listfd) {
            Cg->options.ListFileOpen = 1;
        } else {
            FatalError("Can't open listing file \"%s\"", Cg->options.listFileName);
            return 0;
        }
    } else {
        Cg->options.listfd = stdout;
    }
    if (Cg->options.ListFileOpen) {
        fprintf(Cg->options.listfd, "%s cgc version %d.%d.%04d%s, build date %s  %s\n", Cg->theHAL->comment,
                HSL_VERSION, HSL_SUB_VERSION, HSL_SUB_SUB_VERSION, NDA_STRING, Build_Date, Build_Time);
    }
    return 1;
} // OpenListFile

/*
 * PrintOptions()
 *
 */

void PrintOptions(int argc, char **argv)
{
    int ii;

    if (argc > 1) {
        fprintf(Cg->options.outfd, "%s command line args:", Cg->theHAL->comment);
        for (ii = 1; ii < argc; ii++)
            fprintf(Cg->options.outfd, " %s", argv[ii]);
        fprintf(Cg->options.outfd, "\n");
    }
} // PrintOptions

/*
 * CloseOutputFiles()
 *
 */

int CloseOutputFiles(const char *mess)
{
    if (Cg->options.OutputFileOpen) {
        if (!Cg->options.ListFileOpen)
            fprintf(Cg->options.outfd, "%s %s\n", Cg->theHAL->comment, mess);
        Cg->options.OutputFileOpen = 0;
        if (fclose(Cg->options.outfd)) {
            FatalError("Error closing output file.");
            return 0;
        }
    }
    if (Cg->options.ListFileOpen) {
        fprintf(Cg->options.listfd, "%s %s\n", Cg->theHAL->comment, mess);
        Cg->options.ListFileOpen = 0;
        if (fclose(Cg->options.listfd)) {
            FatalError("Error closing listing file.");
            return 0;
        }
    }
    return 1;
} // CloseOutputFiles

///////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////// Misc Support Functions: ///////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////////////

/*
 * HasNumericSuffix() - See if there is a numeric suffix on a string.  If so, strip it off and
 *         retrun the value as an integer.
 */

int HasNumericSuffix(const char *fStr, char *root, int size, int *suffix)
{
    int val, HasSuffix, len, scale;
    char *s, ch;

    strncpy(root, fStr, size - 1);
    len = strlen(fStr);
    if (len >= size)
        len = size - 1;
    root[len] = 0;
    val = 0;
    HasSuffix = 0;
    scale = 1;
    s = &root[len];
    while (1) {
        ch = *--s;
        if (ch >= '0' && ch <= '9' && s >= root) {
            val = val + scale*(ch - '0');
            scale *= 10;
            HasSuffix = 1;
        } else {
            break;
        }
    }
    s[1] = '\0';
    *suffix = val;
    return HasSuffix;
} // HasNumericSuffix

///////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////// Analysis and Code Generation Control Functions ///////////////////////
///////////////////////////////////////////////////////////////////////////////////////////////

/*
 * SetSymbolFlags() - Set the flags field for all symbols in this tree.
 *
 */

void SetSymbolFlags(Symbol *fSymb, int fVal)
{
    if (fSymb) {
        fSymb->flags = fVal;
        SetSymbolFlags(fSymb->left, fVal);
        SetSymbolFlags(fSymb->right, fVal);
    }
} // SetSymbolFlags

/*
 * SetSymbolFlagsList() - Walk a list of scopes and set the flags field for all symbols.
 *
 */

void SetSymbolFlagsList(Scope *fScope, int fVal)
{
    while (fScope) {
        SetSymbolFlags(fScope->symbols, fVal);
        fScope = fScope->next;
    }
} // SetSymbolFlagsList

///////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////// Various Utility Functions //////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////////////

/*
 * GetNumberedAtom() - Create an atom with the given root string and a numbered suffix.
 */

int GetNumberedAtom(const char *root, int number, int digits, char ch)
{
    char str[256], *s;
    int vname, len;

    strcpy(str, root);
    len = strlen(str);
    if (ch != '\0') {
        str[len] = ch;
        len++;
    }
    s = &str[len + digits];
    *s = '\0';
    while (digits-- > 0) {
        *--s = '0' + number % 10;
        number /= 10;
    }
    vname = AddAtom(atable, str);
    return vname;
} // GetNumberedAtom

/*
 * GetVarExprName() - Return a string representation of the variable described by fExpr.
 */

int GetVarExprName(char *str, int size, expr *fExpr)
{
    const char *name;
    int len = 0, len2;

    *str = '\0';
    switch (fExpr->common.kind) {
    case SYMB_N:
        switch (fExpr->sym.op) {
        case VARIABLE_OP:
        case MEMBER_OP:
            name = GetAtomString(atable, fExpr->sym.symbol->name);
            len2 = strlen(name);
            if (len2 >= size)
                len2 = size - 1;
            len += len2;
            while (len2--)
                *str++ = *name++;
            *str = '\0';
            break;
        }
        break;
    case BINARY_N:
        // Put struct.member code here:
        break;
    }
    return len;
} // GetVarExprName

/*
 * GenerateIndexName() - Create an atom with the given root string representing the variable
 *         by fExpr and a numbered suffix for the index.
 */
int GenerateIndexName(expr *fExpr, int index)
{
    char str[256];
    int vname;

    GetVarExprName(str, 256, fExpr);
    vname = GetNumberedAtom(str, index, 1, '$');
    return vname;
} // GenerateIndexeName

/*
 * ConcatStmts() - Concatenate two lists of statements.
 *
 */

stmt *ConcatStmts(stmt *first, stmt *last)
{
    stmt *lStmt;

    if (first) {
        if (last) {
            lStmt = first;
            while (lStmt->commonst.next)
                lStmt = lStmt->commonst.next;
            lStmt->commonst.next = last;
        }
        return first;
    } else {
        return last;
    }
} // ConcatStmts

/*
 * AppendStatements() - Append a list of statements to the end of another list.
 *
 */

void AppendStatements(StmtList *fStatements, stmt *fStmt)
{
    if (fStmt) {
        if (fStatements->first) {
            fStatements->last->commonst.next = fStmt;
        } else {
            fStatements->first = fStmt;
        }
        while (fStmt->commonst.next)
            fStmt = fStmt->commonst.next;
        fStatements->last = fStmt;
    }
} // AppendStatements

///////////////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////// Expression Functions ////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////////////

/*
 * GenSymb() - Create a node that references a symbol.
 *
 */

expr *GenSymb(Symbol *fSymb)
{
    expr *lExpr;

    lExpr = (expr *) NewSymbNode(VARIABLE_OP, fSymb);
    return lExpr;
} // GenSymb

/*
 * GenMember() - Create a node that references a member of a struct or connector.
 *
 */

expr *GenMember(Symbol *fSymb)
{
    expr *lExpr;

    lExpr = (expr *) NewSymbNode(MEMBER_OP, fSymb);
    return lExpr;
} // GenMember

/*
 * GenMemberSelector() - Create a node that references a member of a struct or connector.
 *
 */

expr *GenMemberSelector(expr *sExpr, expr *mExpr)
{
    expr *lExpr;

    lExpr = (expr *) NewBinopNode(MEMBER_SELECTOR_OP, sExpr, mExpr);
    lExpr->common.type = mExpr->common.type;
    return lExpr;
} // GenMemberSelector

/*
 * GenMemberReference() - Build an expression to reference a member of a struct.
 *
 */

expr *GenMemberReference(expr *sExpr, Symbol *mSymb)
{
    expr *lExpr, *mExpr;

   // sExpr = (expr *) NewSymbNode(VARIABLE_OP, sSymb);
    mExpr = (expr *) NewSymbNode(MEMBER_OP, mSymb);
    lExpr = (expr *) NewBinopNode(MEMBER_SELECTOR_OP, sExpr, mExpr);
    lExpr->common.type = mExpr->common.type;
    lExpr->common.IsLValue = 1;
    lExpr->common.IsConst = (GetQualifiers(lExpr->common.type) & TYPE_QUALIFIER_CONST) != 0;
    return lExpr;
} // GenMemberReference

/*
 * GenVecIndex() - Create a vector index node.
 *
 */

expr *GenVecIndex(expr *vexpr, expr *xexpr, int base, int len, int len2)
{
    expr *lExpr;

    lExpr = (expr *) NewBinopNode(ARRAY_INDEX_OP, vexpr, xexpr);
    lExpr->bin.type = GetStandardType(base, 0, 0);
    return lExpr;
} // GenVecIndex

/*
 * GenMatIndex() - Create a matrix index node.
 *
 */